Timber Frame Systems Building for a Better Future

80mm PIR Rigid InsulationFull Height Between Joists

Airtight Membrane wrappedaround junction of floor joist

VCL / Foil ReflectiveAirtight Membrane

Plasterboard Supplied & Fitted by others

38mm Service Cavity Batten

Passive Standard Foundation U-ValueFrom U-Value 0.105W/m2K - 0.13W/m2K

25x50mm Counter Battens

Breathable Roofing Membrane

Cellulose Insulation

Engineered Rafter

Eaves Closer

Vaulted / Cut RoofU-Value 0.14W/m2K

Vapour Control Layer& Airtight Membrane

22mm Ceiling Service Cavity Batten

38mm Wall Service Cavity Batten

140mm Wall System Suitable for allExternal Leaf Options ie: block work,

stone, cement board, timber cladding etc…

140mm Stud WallU-Value 0.14W/m2K

300mm High DensityMineral Wool Insulation

140mm x 38mm Timber Studs

140mm High DensityMineral Wool Insulation

9mm OSB ExternalSheathing

TF200 Thermo Reflective Breather Membrane

22mm ChipboardFlooring Deck

Engineered Open MetalWeb Floor Joist

Ceiling PlasterboardSupplied & Fitted by Others

40mm PIR Rigid Insulation

Internal Service Duct

300mm EPS Insulation

150mm Power FloatedReinforced Concrete Slab

Reinforced Concrete Ringbeam

Compacted Hardcore Stone

50mm Sand Blinding

Radon Barrier/DPM

Perimeter Ringbeam Footing Installed for Masonry

External Leaf (if required)

Perimeter landscaping, footpath,paving & backfilling by others

Service Ducts Fitted & broughtout 1 meter from edge of EPS

Closed Panel SystemThe MBC closed panel system offers a variety of insulation options based around a 140mm stud timber frame. The section below details a 0.14 W/m2K U-Value wall with a 0.14 W/m2K U-Value roof.

Vapour Control Layer /Ceiling Airtight Membrane

25x50mm Counter Battens

Breathable Roofing Membrane

Cellulose Insulation

Engineered Rafter

Eaves Closer

Airtight Membrane wrappedaround junction of floor joist

300mm Twin Studs – 38mm x 89mm x 2 timber studs set122mm apart with 300mmCellulose Insulation Pressure Pumped Between Studs

Passive Standard Twin Wall SystemSuitable for all External Leaf Options ie: block work, stone, cement board, timberCladding etc…

300mm Cellulose Insulation

12.5mm BreathableMedite Vent BoardTF200 Thermo ReflectiveBreather Membrane

Perimeter Ringbeam Footing Installed for Masonry External Leaf (if required)

EPS formwork removed as required (by others) in line with perimeter landscaping needs

Service Ducts Fitted & brought out 1 meter from edge of EPS

Perimeter landscaping,paving & backfilling by others

25mm Ceiling ServiceCavity Batten

89mm InternalTimber Stud Wall

22mm Chipboard Flooring Deck

Engineered Open MetalWeb Floor Joist

12.5mm Smart Ply‘VAP’ Airtight Board

38mm Service Cavity Batten

PlasterboardSupplied & Fitted by others

150mm Power FloatedReinforced Concrete Slab

Reinforced Concrete Ringbeam

300mm EPS Insulation

Radon Barrier / DPM

50mm Sand Blinding

Compacted Hardcore Stone

Internal Service Duct

Passive Standard RoofU-Value 0.10W/m2K

Passive Standard Twin Wall U-Value 0.12W/m2K

Passive Standard Foundation U-ValueFrom 0.105W/m2K – 0.13W/m2K

Passive House Technical SectionPassive Twin Wall• Delivers a U-Value of 0.12 W/m2K• Continuous thermal layer envelopes the structure completely• Suitable for all external finishes ie: Brick, render, Cladding

Passive Foundation• Delivers a U-Value from 0.105W/m2K – 0.13W/m2K• Engineered to thermally encase concrete slab in high

performance insulation• Eliminates cold bridge typically found at wall/floor junctions

Breathable wall protects thermal envelope

Roof optionsTo provide roofing solutions for Cut / Vaulted Roofs and Flat Roofs, MBC utilise open metal web Posi Joists which see parallel timber flanges plated together with an engineered steel web component. The steel webs are plated in a ‘V’ formation, providing

a lightweight structural roof joist, or flat roof joist, that can span greater distances in comparison to standard solid joists. Insulation is fitted by MBC within the roof structures, with the insulation located in between the Posi Joists.

Cellulose Insulation

Cellulose Insulation

Breathable Roofing

Membrane

Breathable Roofing

Membrane

Engineered Posi Rafter

Engineered Posi Rafter

25mm Ceiling Service Cavity Batten

25mm Ceiling Service Cavity Batten

*Plasterboard Supplied and Fitted by Others

*Plasterboard Supplied and Fitted by Others

*Plasterboard Supplied and Fitted by Others

*Plasterboard Supplied and Fitted by Others

VCL / Ceiling Airtight

Membrane

VCL / Ceiling Airtight

Membrane

25mm x 50mm

Counter Batten

Cellulose Insulation Cellulose

InsulationCeiling VCL /

Airtight Membrane

Ceiling VCL / Airtight

Membrane

25mm Ceiling Service Cavity

Batten

25mm Ceiling Service Cavity

BattenEngineered Posi Joist

Engineered Posi Joist

PIR Insulation

PIR Insulation

9mm OSB & Breather Membrane

9mm OSB & Breather Membrane

50mm minimum

firring pieceTo create fall & full ventilation

50mm minimum

firring pieceTo create fall & full ventilation

OSB DeckOSB Deck

25mm x 50mm

Counter Batten

Cut / Vaulted Roof System U-Value 0.10W/m2K

Posi Joist Flat Roof System U-Value 0.10W/m2K

Cut / Vaulted Roof System U-Value 0.14W/m2K

Posi Joist Flat Roof System U-Value 0.13W/m2K

0.18WW/m²K U-Value 0.14W/m²K U-Value 0.11W/m²K U-Value

Wall optionsThe MBC closed panel system incorporates many of the philosophies used in the Passive system. All systems offer excellent air tightness and are significantly greater than building regulation requirements.

FoundationsThe passive foundation delivers a U-Value of 0.105 – 0.13 W/m2K and is designed to complete the continuously insulated envelope of our Passive system, this is achieved as the insulation in the wall sits on the insulation in the foundation, removing what is usually a very difficult junction to overcome thermally. Many of our customers

also incorporate the MBC foundation system into their standard timber frame projects, our experience shows that there is huge value in one company taking responsibility for the entire structural thermal envelope of foundations, walls and roof.

TF200 Thermo Reflective Breather

Membrane

TF200 Thermo Reflective Breather

Membrane

TF200 Thermo Reflective Breather

Membrane

140mm x 38mm Timber Studs

140mm x 38mm Timber Studs

140mm x 38mm Timber Studs

140mm High Density Mineral Wool Insulation

140mm High Density Mineral Wool Insulation

110mm PIR Insulation

80mm PIR Rigid Insulation

40mm PIR Rigid Insulation

VCL / Foil Reflective

Membrane

VCL / Foil Reflective

Membrane

VCL / Foil Reflective

Membrane

38mm Service Cavity Battens

35mm Service Cavity Battens

35mm Service Cavity Battens

9mm OSB External

Sheathing

9mm OSB External

Sheathing

9mm OSB External

Sheathing

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Superb energy efficient passive homes - reduced energy costsMBC also offer high performance windows & doors

Tel: 01452 346499 info@mbctimberframe.co.uk mbctimberframe.co.uk

UK Office: Quedgeley Court, Shepherd Road, Gloucester, GL2 5EL.

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Metal Web Joists

Windows

TrussesMBC Timber Frame design and manufacture metal web joists inhouse, these are used within all of our timber frame systems and are also available on a supply only basis for traditional build projects.

Metal web joists make running services much quicker and easier, they are also able to span great lengths without the need for additional steel work.

MBC are able to offer a wide range of timber and alu-clad windows, these range from 0.6 W/m2K to 1.2 W/m2K U-Values. Once the windows are installed by MBC, they are sealed in preparation for an air test that is guaranteed as part of the MBC package.

With our inhouse roof designer and truss press, MBC are able to utilise a wide range of trusses within our projects, these are also available on a supply only basis.

From fink trusses, to attic and raised tie trusses these are manufactured to the highest quality.