Jerry Parks - Treated Wood

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Treated Wood Preservatives Treated Wood Preservatives for Durable Wood for Durable Wood ConstructionConstruction

Presented by the Western Wood Preservers InstitutePresented by the Western Wood Preservers Institute

Wood Solutions Fair •Wood Solutions Fair • September 30, 2008September 30, 2008

Western Wood Preservers InstituteWestern Wood Preservers Institute

�� TreatersTreaters

�� Industry MembersIndustry Members

WWPI’s MissionWWPI’s Mission

��Provide Educational Information to Provide Educational Information to Increase Awareness of Properly Increase Awareness of Properly Treated Wood Products to:Treated Wood Products to:�� HomeownersHomeowners

�� BuildersBuilders

�� Architects, Specifiers, DesignersArchitects, Specifiers, Designers

�� Building Material DealersBuilding Material Dealers

�� Building Code Building Code OfficialsOfficials

�� Ports & MarinasPorts & Marinas44

Wood Wood -- the the Real Green &Real Green &

RenewableRenewable Building ProductBuilding Product..

Wood as a Building MaterialWood as a Building Material

�� Excellent physical and Excellent physical and mechanical properties; mechanical properties; reliablereliable

�� Wood is a renewable Wood is a renewable and sustainable and sustainable resourceresource

�� It is readily available, It is readily available, easy to work with, and easy to work with, and cost effectivecost effective

�� Natural Natural –– Blends with Blends with the envirionmentthe envirionment

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Lumber & Wood Piling are Earth Friendly Lumber & Wood Piling are Earth Friendly

Products.Products.

•• Reduces Green House Gas By Storing Carbon.Reduces Green House Gas By Storing Carbon.

–– Growing Forests Remove CO2, Store Carbon And Growing Forests Remove CO2, Store Carbon And

Produce Oxygen. Produce Oxygen.

–– Wood Products, Such As Lumber & Piling Store Wood Products, Such As Lumber & Piling Store

Carbon During Use And With Disposal.Carbon During Use And With Disposal.

Science Suggests That The Combination Of 45 Science Suggests That The Combination Of 45

Year Growth And Harvest Scenarios With Use Of Year Growth And Harvest Scenarios With Use Of

Wood Products Is The Most Efficient Wood Products Is The Most Efficient

Management Scenario For CO2 Sequestration. Management Scenario For CO2 Sequestration.

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Wood is an Earth Friendly Product.Wood is an Earth Friendly Product.

•• Wood Produces Less Green House Gas Than Wood Produces Less Green House Gas Than

Alternative Materials.Alternative Materials.

–– Wood Is The Lowest Energy Consuming Wood Is The Lowest Energy Consuming

Product Product –– Thus Less Consumption Of Thus Less Consumption Of

Hydrocarbon Based Power.Hydrocarbon Based Power.

–– Wood Is The Lowest Producer of Water Wood Is The Lowest Producer of Water

and Air Pollution. and Air Pollution.

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40 to 80 years 40 to 80 years of Forest of Forest

ManagementManagement

INPUTS:••SeedSeed••SoilSoil

••WaterWater••SunSun••CO2CO2

OUTPUTS:• OxygenOxygen•• HabitatHabitat•• Stored Stored CarbonCarbon••Mature Mature ForestForest••Wood Wood

Products!Products!

++ ==

Environmental ConsiderationsEnvironmental Considerations

SustainabilitySustainability

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By the time your By the time your product has served product has served its life, a new one its life, a new one will be grown and will be grown and ready to replace it!ready to replace it!

Renewability + Low Energy Use +Renewability + Low Energy Use +Low Industrial Pollution Equals =Low Industrial Pollution Equals =

Environmental Sustainability!Environmental Sustainability!

��More than 90% of all homes More than 90% of all homes built with wood.built with wood.

��Excellent physical, mechanical and Excellent physical, mechanical and insulating properties; reliableinsulating properties; reliable

��Wood homes are comfortable, Wood homes are comfortable, energy efficientenergy efficient

��Wood is a renewable resourceWood is a renewable resource

�� It is readily available, easy to work It is readily available, easy to work with, and cost effectivewith, and cost effective

Wood as a Building MaterialWood as a Building Material

��Problem: The durability of Problem: The durability of wood can be threatened bywood can be threatened by

� Decay fungi

� Carpenter ants

� Wood boring beetles

�Termites�drywood

�native

�Formosan

Termites alone cause damage Termites alone cause damage costing over 5 billion dollars costing over 5 billion dollars

each year in America. each year in America.

Durability vs. WoodDurability vs. Wood--Destroying OrganismsDestroying Organisms

�� A complex issue, impactingA complex issue, impacting

�� HomeownersHomeowners

�� Architects, Specifiers, DesignersArchitects, Specifiers, Designers

�� Builders, Developers, RealtorsBuilders, Developers, Realtors

�� Lenders, Insurance and Warranty CompaniesLenders, Insurance and Warranty Companies

�� Building Code OfficialsBuilding Code Officials

�� Pest Control IndustryPest Control Industry

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Some examples of damageSome examples of damage Some examples of damageSome examples of damage

When When you can you can finally finally see see

them…them…

it’s usually too lateit’s usually too late

Sometimes much too late…Sometimes much too late…It It CANCAN Happen HereHappen HereIt It CANCAN Happen HereHappen Here

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Exposure to Moisture = Exposure to Moisture = Growth of Rot & Decay in Growth of Rot & Decay in

Untreated WoodUntreated Wood





In Bath & Laundry Areas…In Bath & Laundry Areas…

Improper or No Flashing on Roofs can Cause Rot in Soffits, Facia and

Trim.

Close Proximity to Sprinklers can Cause Rot on

Untreated Wood Siding or Fencing,

Even When Painted.2424

The Solution.The Solution.�� Treat the wood with Treat the wood with

preservatives in preservatives in the outer shell the outer shell of the wood of the wood to repel to repel and and protect the wood from protect the wood from marine marine borers, insects borers, insects and decay.and decay.

�� Result: Service life measured in Result: Service life measured in decades, not years.decades, not years.

Treated Shell

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American Wood Protection American Wood Protection AssociationAssociation

�� Founded in 1904Founded in 1904

�� International, nonprofit technical societyInternational, nonprofit technical society

�� Standards writing organization for the wood Standards writing organization for the wood preserving industry in U.S.preserving industry in U.S.

�� Provides a technical forum for industry, research Provides a technical forum for industry, research and users.and users.

�� Protects consumers by ensuring uniform product Protects consumers by ensuring uniform product performance.performance.

�� Reference in all building codes.Reference in all building codes.

�� Updated Annually Updated Annually -- Currently the 2008 EditionCurrently the 2008 Edition2626

AWPAAWPA

�� Determines if a preservative is Determines if a preservative is effective effective and can be listed in the standards.and can be listed in the standards.

�� Establishes how much of the preservative Establishes how much of the preservative is needed (retention) depending upon is needed (retention) depending upon the exposure and use. May vary from .25 the exposure and use. May vary from .25 to several pounds per cubic foot of the to several pounds per cubic foot of the treated shell.treated shell.

�� Industry Industry seeks to minimize chemicals seeks to minimize chemicals through through lower retentions.lower retentions.

2007 California Building Code2007 California Building CodeSection 2303 Section 2303 –– Standards of QualityStandards of Quality

�� Section 2303.1.8 Section 2303.1.8 –– Lumber, timber, Lumber, timber, plywood, piles and poles supporting plywood, piles and poles supporting permanent structures shall be treated permanent structures shall be treated according to the requirements of the according to the requirements of the American WoodAmerican Wood--Protection Association Protection Association (AWPA) for species, product, preservative (AWPA) for species, product, preservative and end use.and end use.

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Who Determines If Wood Preservatives Are Who Determines If Wood Preservatives Are Safe For People And The Environment?Safe For People And The Environment?

�� All Wood Preservatives Must be All Wood Preservatives Must be Registered.Registered.�� The U.S. Environmental Protection The U.S. Environmental Protection

AgencyAgency..

�� Regulated & Controlled Industry.Regulated & Controlled Industry.

�� Detailed Risk Reviews for Human Detailed Risk Reviews for Human Health and Environmental Impacts.Health and Environmental Impacts.

�� Product Product Labels Designate Labels Designate in What in What Building Applications the Treated Building Applications the Treated Wood May Be Wood May Be Used.Used.

How is Lumber and Plywood How is Lumber and Plywood Pressure Treated?Pressure Treated?


Preservative, Mix and Water Storage Tanks.

Typical treating plantTypical treating plant

Treating Cylinder

Practices to Enhance the Treating Practices to Enhance the Treating Process for Western SpeciesProcess for Western Species

�� IncisingIncising

�� PrePre--DrillingDrilling

�� Drying PriorDrying Priorto Treatmentto Treatment

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Western Species MUST be Incised.



A series of incisor knives are mounted on A series of incisor knives are mounted on drums.drums.

The drums rotate drawing the wood thru the incisor.

The minimum number of incisions is 750 per square The minimum number of incisions is 750 per square foot.foot.

Wood Is Loaded on Trams and Inserted Into Cylinder

Cylinder Door Is Closed and Vacuum-Pressure Treating Cycle Begins



Pressure Treatment ProcessPressure Treatment Process

Dry wood is loaded into cylinder

Initial vacuum pulls out air

Liquid fire preservative

chemicals fill cylinder

Pressure Treatment ProcessPressure Treatment Process

Pressure forces preservative

chemicals into wood

Remaining liquid emptied for later use

Final vacuum removes excess liquid

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Pressure Treatment ProcessPressure Treatment Process Pressure Treatment ProcessPressure Treatment Process

2007 California Building Code2007 California Building CodeSection 2304.11Section 2304.11

Decay and Termite ProtectionDecay and Termite Protection

Section 2304.11.2Section 2304.11.2Wood Used Above GroundWood Used Above Ground

Wood used above ground in the locations specified in the following Sections: 2304.11.2.1-2304.11.2.7; 2304.11.3 and 2304.11.5.

Section 2304.11.2.1Section 2304.11.2.1Joists, Girders & SubfloorJoists, Girders & Subfloor

Wood joists or the bottom of a wood structural floor closer than 18” or wood girders when closer than 12” to exposed ground in crawl spaces or unexcavated areas located within the periphery of the building foundation.

Section 2304.11.2.2Section 2304.11.2.2Wood Supported by Exterior Wood Supported by Exterior

Foundation WallsFoundation Walls

Wood framing members that rest on concrete or masonry exterior foundation walls & are less that 8’’ from exposed ground.

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Section 2304.11.2.3Section 2304.11.2.3Exterior Walls Below GradeExterior Walls Below Grade

�� Wood furring strips Wood furring strips

or other wood or other wood framing members framing members attached to the attached to the

interior or exterior interior or exterior masonry or concrete masonry or concrete

walls below grade.walls below grade.

Section 2304.11.2.4Section 2304.11.2.4Sills and SleepersSills and Sleepers

All foundation plates or sills and sleepers on a concrete or masonry slab, which is in direct contact with earth, and sill which rest on concrete or masonry foundations.

Section Section 2304.11.2.52304.11.2.5Girder EndsGirder Ends

The ends of wood girders entering exterior masonry or concrete walls having clearances of less than 0.5’’ on tops, sides and ends.

Section 2304.11.2.6Section 2304.11.2.6Wood SidingWood Siding

�� Wood siding, Wood siding,

sheathing & wall sheathing & wall framing on the framing on the exterior of a building exterior of a building

having a clearance having a clearance less than 6” to the less than 6” to the

ground.ground.

Section 2304.11.2.7Section 2304.11.2.7Posts or ColumnsPosts or Columns

Posts or columns supporting permanent structures and supported by a concrete or masonry slab or footing that is in direct contact with the earth.

Section 2304.11.3Section 2304.11.3Laminated TimbersLaminated Timbers

The portions of glued laminated timbers that form the structural supports of a building and are exposed to weather and not protected from moisture.

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Section 2304.11.5Section 2304.11.5Supporting Member forSupporting Member for

Permanent AppurtenancesPermanent Appurtenances

� In geographical areas where needed, wood members which support buildings, balconies,decks or porches if exposed to weather and without adequate cover protection.

Section 2304.11.4Section 2304.11.4Wood in Contact with theWood in Contact with theGround or Fresh WaterGround or Fresh Water

Wood used above ground in the locations specified in the following Sections: 2304.11.4.12304.11.4.2.

Section 2304.11.4.1Section 2304.11.4.1Posts or ColumnsPosts or Columns

� Posts and columns supporting permanent structures that are embedded in concrete that is in direct contact with the earth, embedded in concrete that is exposed to the weather, or in direct contact with the earth.

Section 2304.11.4.2Section 2304.11.4.2Wood Structural MembersWood Structural Members

� Wood structural members supporting moisture-permeable floors or roofs that are exposed to weather such as concrete or masonry slabs.

Section 2304.11.6Section 2304.11.6Termite ProtectionTermite Protection

In geographical areas where hazard of termite damage is known to be very heavy, wood floor framing.

Section 2304.11.7Section 2304.11.7Wood Used inWood Used in

Retaining Walls & CribsRetaining Walls & Cribs

� Wood installed in retaining or crib walls.

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Preservative FamiliesPreservative Families

OilOil--Types & WaterbornesTypes & Waterbornes

Changes for the IndustryChanges for the Industry

Preservative FamiliesPreservative Families

OilOil--Types & WaterbornesTypes & Waterbornes

Changes for the IndustryChanges for the Industry

Waterborne PreservativesWaterborne Preservatives

�� CCA CCA –– Chromated Copper Chromated Copper ArsenateArsenate

�� ACZA (Chemonite) ACZA (Chemonite) –– Ammoniacal Ammoniacal Copper Zinc ArsenateCopper Zinc Arsenate

�� ACQ ACQ –– Alkaline Copper QuatAlkaline Copper Quat

�� CACA--B B –– Copper AzoleCopper Azole

�� BoratesBorates

CCACCA CCACCA�� Industry Voluntarily Modified EPA Industry Voluntarily Modified EPA

Registered Uses for CCA.Registered Uses for CCA.

�� Effective Dec. 31, 2003 Effective Dec. 31, 2003 –– CCA is CCA is now phased out for most consumer now phased out for most consumer and residential applications.and residential applications.

�� CCA is still approved for industrial CCA is still approved for industrial end use applications such as end use applications such as plywood, highway construction, plywood, highway construction, utility poles, piling and agricultural utility poles, piling and agricultural applications.applications.

�� EPA does NOT Recommend the EPA does NOT Recommend the Removal of Existing CCA Structures Removal of Existing CCA Structures or Installations.or Installations.

CCACCA ACZAACZA““Chemonite”Chemonite”

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BoratesBoratesPacBorPacBor--TimBorTimBor--HiBorHiBor--Advance GuardAdvance Guard--SilBorSilBor

�� • • AWPA CAWPA C--31 31 –– “Where “Where its application is its application is continually protected continually protected from liquid water”from liquid water”

�� • • Sill Plate & Interior Sill Plate & Interior Framing ApplicationsFraming Applications

�� • Colorless • Colorless –– often with often with blueblue--green dyegreen dye

ACQACQ“Preserve Wood” & “Nature’s Wood”“Preserve Wood” & “Nature’s Wood”

CACA--BBWolmanizedWolmanized®® OutdoorOutdoor®® AppearanceAppearance

�� •• Freshly treated Freshly treated product is a product is a familiar green colorfamiliar green color

�� •• Weathers to tan Weathers to tan / brown color in / brown color in months and months and eventually eventually weathers to gray weathers to gray over timeover time

APPLICATIONSAPPLICATIONS

�� Above Above GroundGround

�� Ground Ground ContactContact

�� Fresh Fresh Water ContactWater Contact

�� Salt Salt Water Splash*Water Splash*

*Not approved for salt*Not approved for salt--water immersion applicationswater immersion applications

ApplicationsApplications

�� DeckingDecking

�� PostsPosts

�� Sill PlatesSill Plates

�� Building PolesBuilding Poles

�� Permanent Wood Permanent Wood FoundationsFoundations

�� FencingFencing

�� Fresh Water DocksFresh Water Docks

�� Exterior Trim & Exterior Trim & FasciaFascia

�� Outdoor FurnitureOutdoor Furniture

�� Fresh Water DocksFresh Water Docks

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Care & MaintenanceCare & Maintenance

�� ACQ ACQ & Copper & Copper AzoleAzole productsproductscan be painted or stainedcan be painted or stained..

((Follow manufacturers recommendations.)Follow manufacturers recommendations.)

�� Water Water repellent repellent coating coating recommended recommended annually.annually.

OilOil--Type PreservativesType Preservatives

��CreosoteCreosote

��PentachlorophenolPentachlorophenol

��Copper NaphthenateCopper Naphthenate

CreosoteCreosote PentachlorophenolPentachlorophenol

Copper NaphthenateCopper Naphthenate

Only AWPA Only AWPA

Approved Approved

Preservative for Preservative for

Field TreatmentField Treatment

End Cuts MUST BeEnd Cuts MUST BeField Treated To Meet Code!Field Treated To Meet Code!

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Cut ends shall be field treated.

2007 CBC Section 2304.9.5 Timber Connectors and Fasteners

Fasteners for pressure-preservative treated and fire-retardant treated

wood shall be of hot dipped zinc coated galvanized, stainless steel, silicon

bronze or copper.

Treat End Cuts to Prevent Decay!Treat End Cuts to Prevent Decay!

Copper Nap BrandsCopper Nap Brands(at least 2% copper solution)(at least 2% copper solution)

JASCOCopper-GreenCopper-BrownTermin-8

CUPRINOLGreen #10

WOLMANIZEDEnd Cut Solution

NEXT GENERATION OF NEXT GENERATION OF WOOD PROTECTION WOOD PROTECTION

TECHNOLOGIESTECHNOLOGIES

NEW PRESERVATIVES ARE NOW NEW PRESERVATIVES ARE NOW AVAILABLE IN SOME REGIONS OF AVAILABLE IN SOME REGIONS OF

THE UNITED STATESTHE UNITED STATES

MicroProMicroPro™™

�� Micronized Copper ProductMicronized Copper Product�� Same Basic ACQ Preservatives but Copper Particles Same Basic ACQ Preservatives but Copper Particles

are Suspended Not Dissolved in Preservative are Suspended Not Dissolved in Preservative SolutionSolution

�� Southern Yellow Pine is Now Being Treated in Southern Yellow Pine is Now Being Treated in Colorado Colorado –– Midwest, Eastern & Southern USAMidwest, Eastern & Southern USA

�� Western Species Western Species –– Hem fir & Doug Fir (to come)Hem fir & Doug Fir (to come)�� Not as Corrosive as the Regular Copper Based Not as Corrosive as the Regular Copper Based

Preservatives (similar to CCA)Preservatives (similar to CCA)�� Light, fresh appearance, slightly darker than Light, fresh appearance, slightly darker than

untreated wood.untreated wood.�� Above Ground, Ground & Fresh Water Contact.Above Ground, Ground & Fresh Water Contact.

Non Metallic Non Metallic PreservativesPreservatives

Non Metallic, CarbonNon Metallic, Carbon--based based Ingredients Using Organic Ingredients Using Organic

ChemistryChemistry

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WolmanizedWolmanized®® LL33 OutdoorOutdoor®® WoodWood�� Evaluation Service Report; Evaluation Service Report;

being evaluated by AWPAbeing evaluated by AWPA

�� Now Available in Some Now Available in Some Eastern MarketsEastern Markets

�� Suitable for AboveSuitable for Above--ground ground UseUse

�� PTI = 3 organic ingredients PTI = 3 organic ingredients (propiconazole, tebuconazole, (propiconazole, tebuconazole, imidacloprid)imidacloprid)

�� Very Little Color Unless Very Little Color Unless Colorant is Added for ID Colorant is Added for ID PurposesPurposes

�� Low Impact on Hardware & Low Impact on Hardware & CoatingsCoatings

�� Stabilized organic treated wood for improved weathering performance Stabilized organic treated wood for improved weathering performance

�� Organic preservative system eliminates metalsOrganic preservative system eliminates metals

�� Natural look of real wood combined improved longNatural look of real wood combined improved long--term performance term performance

against the effects of weather in outdoor exposed applications against the effects of weather in outdoor exposed applications

�� Improved fastener performance compared to ACQ, CA and CCAImproved fastener performance compared to ACQ, CA and CCA

�� Moisture control strategies important to optimize preservative and Moisture control strategies important to optimize preservative and

weathering performance weathering performance

�� Above ground applications Above ground applications

�� Organic plus low copper systems for ground contactOrganic plus low copper systems for ground contact

Other New Treated Wood ProductsOther New Treated Wood ProductsMold ProtectionMold Protection

�� MoldMold--Resistant FramingResistant Framing�� FrameGuardFrameGuard®®

�� BluWoodBluWood®®

�� QuanTIMQuanTIM™™

�� FactoryFactory--Applied SurfaceApplied SurfaceCoating (green, blue, purple) forCoating (green, blue, purple) forLumber, Plywood, Trusses, OSBLumber, Plywood, Trusses, OSB

�� Offers Added Resistance toOffers Added Resistance toTermites and Fungal Decay in Termites and Fungal Decay in Interior Applications.Interior Applications.

�� NOTNOT a Substitute for Treated Wood!a Substitute for Treated Wood!

AWPA StandardsAWPA Standards

��Determine:Determine:

��Retention (amount of preservative)Retention (amount of preservative)

��Penetration (depth)Penetration (depth)

Retention LevelsRetention Levels

Above GroundAbove Ground

�� ACQ / ACZA ACQ / ACZA –– 0.25 pcf0.25 pcf

�� CACA--B B –– 0.10 pcf0.10 pcf


�� Above GroundAbove Ground

�� ACQ / Borates ACQ / Borates –– 0.25 pcf0.25 pcf

�� CACA--B B –– 0.10 pcf0.10 pcf

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Ground ContactGround Contact

�� ACQ / ACZA ACQ / ACZA –– 0.40 pcf0.40 pcf

�� CACA--B B –– 0.21 pcf0.21 pcf


FoundationFoundation

�� ACQ / ACZA / CCA ACQ / ACZA / CCA –– 0.60 pcf0.60 pcf

�� CACA--B B –– 0.31 pcf0.31 pcf

Retention LevelsRetention Levels Retention LevelsRetention Levels

How To Specify With theHow To Specify With theAWPA Use Category SystemAWPA Use Category System

What Is It?

Use Category SystemUse Category System

�� Based on end use biodeterioration hazardBased on end use biodeterioration hazard

�� 5 Use Categories based on exposures & expected 5 Use Categories based on exposures & expected

product performance.product performance.

�� Categories range from weather protected (UC1 mild Categories range from weather protected (UC1 mild

exposure/lowest risk) to salt water marine (UC5 severe exposure/lowest risk) to salt water marine (UC5 severe

exposure/highest risk).exposure/highest risk).

�� Separate Use Category for fire retardants.Separate Use Category for fire retardants.

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Use Category 1 (UC 1)Use Category 1 (UC 1)�� Interior ConstructionInterior Construction

�� Not in contact with Not in contact with

ground or ground or

foundationsfoundations

�� Protected from Protected from

weather weather


interior sources of interior sources of

waterwater

�� Insect Hazard OnlyInsect Hazard Only

Use Category 2 (UC 2)Use Category 2 (UC 2)�� Interior ConstructionInterior Construction

�� Not in contact with Not in contact with

groundground


weather weather

�� Subject to dampness Subject to dampness

and occasional and occasional

sources of watersources of water

�� Decay Fungi and Decay Fungi and

Insect HazardInsect Hazard

Use Category 3 (UC 3)Use Category 3 (UC 3)

�� Above Ground; Above Ground;

Exposed to the Exposed to the

WeatherWeather

�� UC3A: Coated & rapid UC3A: Coated & rapid

water runoffwater runoff

�� UC3B: Uncoated or UC3B: Uncoated or

poor water runoffpoor water runoff

�� Decay Fungi and Decay Fungi and

Insect HazardInsect Hazard


�� Ground or Fresh Ground or Fresh

Water Contact; Water Contact;

Exposed to Weather Exposed to Weather

�� UC4A: Deck supportsUC4A: Deck supports

�� UC4B: Foundation, UC4B: Foundation,

building polesbuilding poles

�� Subject to Fungal and Subject to Fungal and

Insect HazardsInsect Hazards


�� Wood Used in Salt or Wood Used in Salt or

Brackish WaterBrackish Water

�� Exposed to marine Exposed to marine

borer attackborer attack

�� Construction such as Construction such as

marine piles, docks, marine piles, docks,

bridgesbridges

Use Category F Use Category F -- UC FUC F

�� Fire Retardant Treated WoodFire Retardant Treated Wood

�� Above Ground Use OnlyAbove Ground Use Only

�� Two Risk Groups Two Risk Groups –– Determined by Determined by Weather ExposureWeather Exposure

�� UC FA: Interior UC FA: Interior -- Continuously protected from Continuously protected from weatherweather

�� UC FB: Exterior UC FB: Exterior -- Exposed to weather or Exposed to weather or wettingwetting

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Specification Guide toSpecification Guide toTreated Wood End UsesTreated Wood End Uses

Section 2303.1.8.1Section 2303.1.8.1Quality Mark Quality Mark -- IdentificationIdentification

All preservative-treated wood shall bear the quality mark of an inspection agency which has been accredited by the American Lumber Standards Committee and complies with the requirements of the ALSC Treated Wood Program or equivalent.

Section 2303.1.8.1Section 2303.1.8.1Quality Mark Quality Mark –– Required InformationRequired Information

1.1. Identification of the treating plantIdentification of the treating plant

2.2. Type of preservativeType of preservative

3.3. Minimum Preservative RetentionMinimum Preservative Retention

4.4. End Use for which it was treatedEnd Use for which it was treated

5.5. AWPA StandardAWPA Standard

6.6. Identity or Logo of the AccreditedIdentity or Logo of the AccreditedInspection AgencyInspection Agency

ALSC Accredited Inspection ALSC Accredited Inspection Agencies in the WestAgencies in the West

�� Bode InspectionBode Inspection

�� Timber Products InspectionTimber Products Inspection

Before / AfterBefore / After

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Section 2304.9.5Section 2304.9.5Fasteners in PreservativeFasteners in Preservative--Treated WoodTreated Wood

Note: Note: Electroplated galvanized fasteners are Electroplated galvanized fasteners are not not recognized recognized as being corrosion resistant for as being corrosion resistant for exteriorexterior applications.applications.

“Fasteners for preservative-treated wood shall be of hot-dipped galvanized steel,

stainless steel, silicon bronze or copper.The coating weights for zinc-coated fasteners

shall be in accordance with ASTM A-153.”

What Do The Chemical What Do The Chemical Manufacturers Recommend?Manufacturers Recommend?

�� As a minimum requirement for use with PreserveAs a minimum requirement for use with Preserve®,®, Nature Nature WoodWood® ® and Wolmanized Natural Selectand Wolmanized Natural Select®® preserved wood preserved wood products, hotproducts, hot--dipped galvanized coated fasteners should dipped galvanized coated fasteners should conform to ASTM Standard Aconform to ASTM Standard A--153.153.

�� For optimum performance and longevity in treated wood, For optimum performance and longevity in treated wood, stainless steel fasteners should be considered. Stainless stainless steel fasteners should be considered. Stainless steel fasteners are required for Permanent Wood steel fasteners are required for Permanent Wood Foundations below grade and are recommended for use Foundations below grade and are recommended for use with treated wood in other severe exterior applications with treated wood in other severe exterior applications such as swimming pools, salt water exposure, etc. Type such as swimming pools, salt water exposure, etc. Type 304 & 316 are recommended grades to use.304 & 316 are recommended grades to use.

�� Aluminum should not be used in direct contact with this Aluminum should not be used in direct contact with this wood.wood.

Fastener RecommendationsFastener Recommendations

�� All Major Fastener and Connector All Major Fastener and Connector Manufacturers are Now Producing Manufacturers are Now Producing Products that are Compatible with the Products that are Compatible with the New Generation of Pressure Treated New Generation of Pressure Treated Wood Products.Wood Products.

�� They are Identified and Widely They are Identified and Widely Available EverywhereAvailable Everywhere

When Using Treated Wood in Aquatic When Using Treated Wood in Aquatic and Other Sensitive Environmentsand Other Sensitive Environments

ALWAYS SPECIFY BMP STANDARDSALWAYS SPECIFY BMP STANDARDSBMP ObjectivesBMP Objectives

�� Produce products which Produce products which minimize any potential for minimize any potential for adverse environmental adverse environmental impactimpact

�� Assure products are Assure products are selected, specified and selected, specified and installed correctly from an installed correctly from an environmental perspectiveenvironmental perspective

�� Incorporate most current Incorporate most current advances in technologyadvances in technology

�� Educate users that “less is Educate users that “less is more not better”more not better”

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BMPs for Use of Treated Wood BMPs for Use of Treated Wood in Aquatic Environmentsin Aquatic Environments

�� Additional Treating to AWPA Additional Treating to AWPA StandardsStandards

�� Minimum ChemicalsMinimum Chemicals

�� Clean ProductClean Product

�� Inspection & RejectionInspection & Rejection

�� FixationFixation

�� Field Installation GuidelinesField Installation Guidelines

�� BMP Quality Control & BMP Quality Control & CertificationCertification

Aquatic & Wetland ConstructionAquatic & Wetland Construction

�� Cases where selection of Cases where selection of preservative system may preservative system may be of environmental be of environmental concern:concern:�� Previously contaminated Previously contaminated

waters.waters.

�� Very slow moving waters Very slow moving waters with no natural flushing.with no natural flushing.

�� Where concerns exist, Risk Where concerns exist, Risk Assessment Guidelines are Assessment Guidelines are available in the Treated available in the Treated wood Aquatic Guide and wood Aquatic Guide and specific Risk Assessment specific Risk Assessment Models are available on lineModels are available on line

Aquatic & Wetland ConstructionAquatic & Wetland Construction

�� In sensitive environments In sensitive environments always specify wood be always specify wood be treated in compliance with treated in compliance with WWPI’s BMPsWWPI’s BMPs

�� Require 3Require 3rdrd Party Party Inspection Agency Inspection Agency Certification:Certification:

�� Presence of BMP MarkPresence of BMP Mark

�� Certificate of ComplianceCertificate of ComplianceBMP® Quality Mark Logo

®

1111

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Quality Control and Quality Control and Inspection at Each Inspection at Each Step in the ProcessStep in the Process

Wood Treatment ProcessWood Treatment Process

Handling, Installation & Handling, Installation & Maintenance BMPsMaintenance BMPs

�� Always prefabricate Always prefabricate (to degree (to degree

possible)possible) prior to treatmentprior to treatment

�� Inspect materials on siteInspect materials on site

�� Use containment where Use containment where neededneeded

�� Work away from waterWork away from water

�� Field treat end cuts with Field treat end cuts with carecare

�� Collect & dispose of old Collect & dispose of old materials and construction materials and construction wastes properlywastes properly

Examples of BMP Treated ProjectsExamples of BMP Treated Projects

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Examples of BMP Treated ProjectsExamples of BMP Treated Projects Environmental & Human SafetyEnvironmental & Human Safety

�� Consumer Consumer Information Sheets & Information Sheets & MSDS for Treated MSDS for Treated WoodWood

�� Handling Handling Requirements are Requirements are Same as Untreated Same as Untreated WoodWood

Disposal of Treated WoodDisposal of Treated Wood

�� Reuse is the preferred Reuse is the preferred optionoption

�� Never burn or mulchNever burn or mulch

�� Treated wood is Treated wood is classified as a non classified as a non hazardous waste by hazardous waste by Federal and State Federal and State rules and can be rules and can be disposed in modern disposed in modern lined landfill.lined landfill.

Fire Retardant Treated WoodFire Retardant Treated Wood


�� Interior Fire RetardantsInterior Fire Retardants

• • Lumber / PlywoodLumber / Plywood

�� Exterior Fire RetardantsExterior Fire Retardants

• • Lumber / PlywoodLumber / Plywood

• • Shakes / Shingle SidingShakes / Shingle Siding

FRTW INTERIOR APPLICATIONSFRTW INTERIOR APPLICATIONS

�� Roof SheathingRoof Sheathing

�� Roof TrussesRoof Trusses

�� RaftersRafters

�� Floor JoistsFloor Joists

�� ShelvingShelving

�� StepsSteps

�� StairwaysStairways

�� StudsStuds

�� Electrical PanelsElectrical Panels

�� Floor SheathingFloor Sheathing

�� Plywood SubflooringPlywood Subflooring

�� Partition WallsPartition Walls

�� Beams & PurlinsBeams & Purlins

�� Blocking & FurringBlocking & Furring

�� PlatformsPlatforms

�� StagesStages

�� Wall PanelingWall Paneling

�� Architectural MillworkArchitectural Millwork

21

FRTW EXTERIOR APPLICATIONSFRTW EXTERIOR APPLICATIONS

�� Wall CoveringsWall Coverings

�� BalconiesBalconies

�� DeckDeck

�� StairwaysStairways

�� FencingFencing

�� ShedsSheds

�� GazebosGazebos

�� Open Air Roof SystemsOpen Air Roof Systems

�� Roof CoveringsRoof Coverings

�� Canopies & AwningsCanopies & Awnings

�� Storefronts & FacadesStorefronts & Facades

�� Eaves, Soffits & FasciaEaves, Soffits & Fascia

�� Ag Buildings & StallsAg Buildings & Stalls

�� Scaffolding & Scaffold Scaffolding & Scaffold PlanksPlanks

�� Construction StagingConstruction Staging


Specifier AlertSpecifier Alert

�� Wood painted or Wood painted or sprayed withsprayed with“fire retardant” “fire retardant” solutions do NOT solutions do NOT meet the requiremeet the require--ments of the ments of the California Building California Building Code for fire Code for fire retardant treated retardant treated wood.wood.

Deck FailuresDeck FailuresChicago • June 27, 2003Chicago • June 27, 2003

Deck FailuresDeck FailuresPortland • August 7, 2005Portland • August 7, 2005

4 Hospitalized 4 Hospitalized –– 10 Others Hurt10 Others Hurt

Deck FailuresDeck Failures

22


Cincinnati – 13 Hurt

Kansas UniversityParty of 60 – 20-50 on Deck + Keg & Cooler Before Collapse

2 Minor Injuries

Seattle – 1 Killed, 7 Hurt

Kalamazoo – 57 Year Old Woman Killed

Montana - Diamond Horse Shoe Casino – 80 Hurt


Deck FailuresDeck Failures Deck FailuresDeck Failures

Deck FailuresDeck FailuresDeck FailuresDeck Failures

Not Always Wood!!!Not Always Wood!!!

May 28, 2004May 28, 2004

Section of the Section of the Waikiki War Waikiki War Memorial Memorial

Natatorium’s Pool Natatorium’s Pool Deck CollapsedDeck Collapsed

23

Deck FailuresDeck FailuresNot Always Wood!!!Not Always Wood!!!

�� Lonz Winery Lonz Winery –– Lake Lake Erie, OhioErie, Ohio

�� 1 Killed, 75 Injured, 1 Killed, 75 Injured, 30 Hospitalized30 Hospitalized

�� Steel & Concrete Steel & Concrete Construction!Construction!

www.WWPInstitute.orgwww.WWPInstitute.org

Concluding RemarksConcluding Remarks

Thank you.Thank you.

Documents

Jerry Parks - Treated Wood