Certificate of Assessment - RedBook Live · PDF fileCertificate of Assessment ... suitable masonry, concrete and cement board clad ... with BS 5080-1 Structural fixings in concrete

BF1661 Rev. 1.0 Page 1 of 26 © BRE Global Ltd, 2016

Certificate of Assessment Certificate Number: 159/13 Revision: 03

Knauf UK Kemsley Fields Business Park Sittingbourne Kent ME9 8SR

is authorised to use the BRE Global Certification Mark in association with the product(s) listed in this certificate and appendix..

Products Knauf Render Systems and Knauf Warm-Wall Insulation and Render Systems

This certificate and appendix is maintained and held in force through regular surveillance activities.

Dr D A Smith 03 October 2016 01 January 2013 Signed for BRE Global Ltd. Managing Director, BRE Global Date of Revision Date of First Issue

This certificate and appendix remains the property of BRE Global Ltd and is issued subject to terms and conditions (for details visit www.redbooklive.com/terms)) To check the validity of this certificate please visit www.redbooklive.com or contact us. BRE Global Ltd., Garston, Watford WD25 9XX. T: +44 (0)333 321 8811 F: +44 (0)1923 664603 E: [email protected]

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Certificate No: 159/13 Revision: 03

Knauf UK Knauf Render Systems and Knauf Warm-Wall Insulation and Render Systems

SUMMARY Knauf Render Systems (KRS) consist of a range of cementitious based ready coloured one-coat or two-coat mesh reinforced renders providing various surface textures and colours for application to suitable masonry, concrete and cement board clad steel and timber framed substrates. Knauf Warm-Wall Insulation and Render Systems (KWIRS) additionally incorporate mineral fibre or expanded polystyrene insulation and associated fixings. Carrier rail systems (outside the scope of this certificate, see 1.1.7.1) can be incorporated to provide a 15mm cavity when KWIRS are used in conjunction with framed structures. The components of the external wall insulation and render systems are as follows:

• Adhesive

• Carrier rails (aluminium and PVC)

• Insulation (mineral fibre and expanded polystyrene)

• Fixings for insulation,

• Base coat materials,

• Reinforcing mesh,

• External finishes.

This certificate replaces previous certificates 059/99 and 081/01 held by Knauf UK and extends the scope to include application of Knauf UK products as defined onto light gauge steel and timber framed backing walls. The systems have been assessed to confirm their suitability, within limitations, as weather-resistant external decorative finishes on new or existing walls of correctly detailed sound, clean vertical brick, block construction, with or without an existing sound render finish and cement board clad light gauge steel or timber frame construction above DPC level, in the United Kingdom.




CONDITIONS OF USE 1. Knauf Render Systems and Knauf Warm-Wall Insulation and Render Systems (the Systems)

are for use onto backing walls of new or existing buildings in locations in the UK, for forming a weather resistant external insulation and render system. The backing wall can be masonry, dense concrete or no - fines concrete, and above damp proof course level, timber frame or light gauge steel frame construction.

2. The number and type of fixings to masonry backing walls shall be determined in accordance

with BS 5080-1 Structural fixings in concrete and masonry. Method of test for tensile loading. Where required consideration should also be given to BS 5080-2 Structural fixings in concrete and masonry. Method for determination of resistance to loading in shear.

3. Timber frame and light gauge steel frame backing walls shall be designed and constructed

in accordance with BS 5268 Structural use of timber or BS 5950 Structural use of steelwork in building, or the relevant Eurocodes.

4. Specifiers shall ensure that backing walls and fixings to them are suitably designed to carry

the weight of the systems and wind loads calculated in accordance with BS 6399-2: Loadings on buildings: wind loadings.

5. The Systems shall not be considered as providing any contribution to the overall structural

performance of the building or for support of any temporary structure. Knauf Render Systems and Knauf Warm-Wall Insulation and Render Systems (the Systems) are for use onto backing walls of new or existing buildings in locations in the UK, for forming a weather resistant external insulation and render system. The backing wall can be masonry, dense concrete or no - fines concrete, and above damp proof course level, timber frame or light gauge steel frame construction.

6. Specifiers shall ensure that the fire performance classifications are adequate for the

intended application and relate specifically to the System in use.

7. Any building having a floor more than 18 metres above the ground level surrounding the building shall be clad in a KWIRS incorporating either mineral fibre insulation expanded polystyrene (EPS). The EPS may be either standard grade SDFRA EPS (white in colour) or graphite impregnated EPS (grey in colour) up to 100mm thick. The specific systems incorporating the EPS insulations that have been tested or assessed and classified as complying with the requirements of BR 135: 2013 Fire performance of external thermal insulation for walls of multi-storey buildings. 3rd edition Annex A and Annex B are detailed in the reports as listed in Table A below and should be obtained from the certificate holder..




Table A - Fire performance of external cladding systems

Standard/Test

Evidence Provided For Fire Performance >18m:

Standard Grade SDFRA EPS (White)

Graphite Impregnated EPS (Grey)

Fire performance of external cladding systems - Part 1: Test method for non-loadbearing external cladding systems applied to the masonry face of a building/BR 135 Annex A

BRE Global Assessment Report No. P100006-1003 Issue 1

BRE Global Test Report 302992 BRE Global Classification Report P100083-1005

Fire performance of external cladding systems - Part 2: Test method for non-loadbearing external cladding systems fixed to and supported by a structural steel frame/BR 135 Annex B

BRE Global Test Report 100083-1001 BRE Global Classification Report P100083-1004

BRE Global Assessment Report No. P100006-1001

No deviations from the cladding systems detailed in the reports cited in Table A are permitted. This includes no other types of combustible insulation (as defined by reaction to fire classes B, C, D or E (European) or 0, 1, 2, 3 or 4 (National)) are permitted for use in the KWIRS on any building having a floor more than 18m above ground level.

8. Acoustic performance of the Systems has not been assessed.

9. The need for vapour control on external walls of framed buildings shall be assessed and the

relevant action taken (e.g. the fitting of vapour control layers and/or breather membranes) to eliminate the risk of interstitial condensation.

10. Where NHBC approval is required with timber frame building system, a minimum 15mm

wide cavity which is drained and ventilated is required. When used to clad a light gauge steel frame building system, a minimum 15mm wide cavity which is drained is required. The supporting framework to produce the required cavity and the ancillary components necessary for fire stopping, drainage and ventilation are not covered by this certificate as they are designed on a project specific basis. The ancillary components and framework selected should be agreed in advance with Knauf UK which operates a technical support service, to ensure that they are suitably durable and compatible with the KWIRS.




11. Frost resistant mortars shall be used below dpc level.

12. The Systems shall be stored, handled, installed and maintained strictly in accordance with the requirements of this certificate and Knauf’s Technical Installation Manual as inspected by BRE Global.

13. The performance of the Systems depends on correct installation. The quality of installation

achieved on site is not covered by this certificate and therefore it is recommended that the quality of installation and workmanship is subject to appropriate checks by a competent person.

14. Periodic inspections shall be made to confirm the condition of rendering and especially the

sealants to ensure adequacy of the seal. Damage should be repaired promptly. Repairs shall be in accordance with the Knauf repair procedures.

15. The Systems shall only be installed by operatives trained, approved and monitored by Knauf

UK and the company shall continue to provide a technical consultancy service.

16. This certificate remains valid while the conditions contained in clause 6.1 are met and the European Technical Approvals listed in table 2.1 remain valid.

STATEMENT Knauf Render Systems and Warm-Wall Insulation and Render Systems are satisfactory for use within the stated limitations provided that they are used in accordance with the Certificate holder’s instructions and the requirements of this certificate when read in its entirety.




1. TECHNICAL SPECIFICATION

Description of Product

1.1.1 General

1.1.1.1 Knauf Render Systems (KRS) consist of a range of cementitious based ready coloured one-coat or two-coat mesh reinforced renders providing various surface textures and colours for application to suitable masonry, concrete and cement board clad steel and timber framed substrates.

1.1.1.2 Knauf Warm-Wall Insulation and Render Systems (KWIRS) additionally incorporate mineral fibre or expanded polystyrene insulation and associated fixings.

1.1.1.3 The products are described in Section 1.1 and some typical construction details are presented in Appendix A (Figures A1 to A4). The associated product performance parameters that have been evaluated are described in Section 2.

1.1.1.4 KRS and KWIRS have been assessed for use as a weather resistant decorative exterior finishes to masonry, concrete and brick & block, timber and steel frame backing walls. KWIRS additionally provided improved thermal performance. The system components which can be used in the combinations shown in Table 1.1 (overleaf) are described in the following paragraphs 1.1.2 to 1.1.7.

1.1.2 Adhesive and basecoats

1.1.2.1 SM700 & SM300 Bonding reinforcing lime cement mortars with micro-fibres, fine additives and bonding agent for application to masonry, concrete, external wall insulation or cement board.

1.1.2.2 UP210

A water-resistant cement and lime mortar incorporating limestone or quartz particles supplied as a pre-blended powder for application to masonry and concrete.

1.1.3 Insulation materials

1.1.3.1 Warm-Wall Mineral Fibre Wool Mineral fibre square edge slab to BS EN 13162 Thermal insulation products for buildings. Factory made mineral wool (MW) products. Specification. Board dimensions are 1200 x 600 mm and 800 x 625 mm, with thicknesses between 30 and 120 mm. Grooved boards (600 x 600 mm) are supplied for use with carrier rails.

1.1.3.2 Warm-Wall Polystyrene

Expanded polystyrene board supplied in accordance with BS EN 13163 Thermal insulation products for buildings. Factory made products of expanded polystyrene. Specification. Boards are straight edged or tongued and grooved on two edges with dimensions 1000 by 500 mm, and thicknesses between 30 and 160mm. Grooved boards (500 x 500 mm) are supplied for use with carrier rails.




Table 1.1 Combinations of system components

Background Adhesive Carrier rail1 Insulation Basecoat Finish coat

Masonry

None

None

None None Presto

UP210

Noblo, SP260 or Conni S Addi S

SM700 SM300

Expanded polystyrene

SM700 SM300

Mineral fibre

Timber or steel frame clad with cement board

SM700 SM300

None

Expanded polystyrene

Mineral fibre

Plastic Expanded polystyrene

Aluminium Mineral fibre

Notes 1. Carrier rails are outside the scope of this certificate

1.1.3.3 Warm-Wall Mineral Fibre Volamit Mineral fibre square edge slab to BS EN 13162 with combed cement based coating on the reverse. Board dimensions are 1200 mm x 200 mm, with thicknesses to match the standard mineral fibre and expanded polystyrene products are used to form horizontal and vertical fire stops where required.

1.1.3.4 A summary of the information provided for each insulation material in terms of product

specification is presented in Table 1.2 overleaf.




Table 1.2 Typical properties of insulation used as part of Knauf Warm Wall systems

Property Test Method

Thermal insulation

Mineral Fibre Wool

Mineral Fibre Volamit

Expanded Polystyrene

Product standard - BS EN 13162 BS EN 13162 BS EN 13163

Density (kg/m3) - 150 80 15-17

Thickness range (mm) - 30 – 120 30 – 160 30 – 160

Thermal conductivity λ90/90 value (W/mK)

BS EN 12667 0.038 0.038 0.030 - 0.038

Reaction to fire EN 13501-1 A1 A1 E

1.1.4 Render systems

There are four render systems comprising cement based one-coat or two-coat finishes. Base coats for two-coat finishes are UP210 on masonry and SM700 & SM300 on cement board. 1.1.4.1 Presto (one-coat finish)

A one-coat scratch render system supplied as a pre-blended powder with 1.5 mm aggregate, based on white cement and lime with selected aggregates. For application in a thickness of 10-30 mm for a rubbed-down finish and 12-30 mm for a scratch coat finish.

1.1.4.2 Noblo (two-coat finish)

A textured render finish coat supplied as a pre-blended powder based on white cement with selected marble aggregate. A textured finish of nominal thickness 1.5, 2 or 3 mm is obtained.

1.1.4.3 SP260 (two-coat finish)

A textured render finish coat supplied as a pre-blended powder based on white cement with selected mineral aggregate. A textured finish of nominal thickness 1.5, 2, 3 or 5mm is obtained.

1.1.4.4 Conni S (two-coat finish)

A silicone resin based textured render finish coat with selected mineral aggregates supplied ready-mixed. A smooth float or rolled finish of nominal finished thickness 1, 1.5, 2 or 3 mm is obtained.




1.1.4.5 Addi S (two coat finish)

An acrylic version of the silicone resin based textured render finish coat with selected mineral aggregates supplied ready-mixed. A smooth float or rolled finish of nominal finished thickness 1.5, 2 or 3mm is obtained.

1.1.5 Fixings back to backing wall

There are a number of proprietary fixings that are supplied as part of the Knauf external wall insulation and render systems. The type and specification for the fastener is determined by the nature of the substrate, insulation thickness, and overall weight of the system, the exposure environment and fire performance. The fixings pins shall be stainless steel, non-ferrous or other material that does not corrode but see clause 2.3.4.1. Further information and advice shall be obtained direct from Knauf UK.

1.1.6 Mesh reinforcement

Alkali resistant polymer coated glass fibre reinforcing mesh of glass fibre with a polymer coating for general reinforcement (160 g/m2 or 200 g/m2).

1.1.7 Ancillary components (outside scope of the certificate)

1.1.7.1 Plastic (PVC) and aluminium supporting rails and metal fixings for securing the Knauf Warm-Wall Rail System (KWRS) insulation (expanded polystyrene and mineral fibre respectively).

1.1.7.2 Alkali-resistant trims and cills – polyvinyl chloride (PVC), stainless steel or aluminium. 1.1.7.3 Silicon Resin Equaliser Paint for application to external wall areas where exposure

conditions may lead to differential weathering of coloured renders.

2 PRODUCT PERFORMANCE

General

The performance of components and systems that have been assessed are described in the following sections of the certificate (see certificate sections 2.2 to 2.8 for product and system testing details).




Structure

2.2.1 Structural Performance

The Knauf Systems are considered to be non-loadbearing and therefore do not make any contribution to the structural performance of the building.

2.2.2 Mechanical Fasteners

The type of mechanical fastener used depends on the nature of the backing wall and shall be specified by the designer/structural engineer for each individual project and is therefore outside the scope of this certificate.

Fire

2.3.1 General

Where fire performance testing and assessments have been carried out for a specific Knauf System and/or the individual components, the results are tabulated in the following sub sections (see Table 2.1). The actual fire performance of the system is dependent on its installation and specification in accordance with the details in the referenced fire test, assessment and classification reports. For further information about the fire test reports and any fire assessment reports cited in this certificate, please contact the certificate holder.

2.3.2 Fire resistance

The overall fire resistance for external walls onto which Knauf Systems have been installed depends on the nature of the backing wall and is therefore outside the scope of the certificate.

2.3.3 Reaction to fire

2.3.3.1 Insulation and Render (reaction to fire) Reaction to fire test data for the Noblo, SP620, Conni S and Addi S external finishes applied onto Mineral Fibre and Expanded Polystyrene insulation are presented in Table 2.1 overleaf.

2.3.3.2 Fire spread on external walls

Any building having a floor more than 18 metres above the ground level surrounding the building shall be clad in a KWIRS incorporating either mineral fibre insulation or expanded polystyrene (EPS). The EPS may be either standard grade SDFRA EPS (white in colour) or Graphite Impregnated EPD (grey in colour) up to 100mm thick. The specific systems incorporating the EPS insulations that have been tested or assessed and classified as complying with the requiremnts of BR 135: 2013 Fire performance of external thermal insulation for walls of multi-storey buildings. 3rd edition Annex A and Annex B are detailed in the reports as listed in Table A (see page 4) and should be obtained from the certificate holder.




No deviations from the cladding systems detailed in the reports cited in Table A are permitted. This includes no other type of combustible insulation (as defined by reaction to fire classes B, C, D or E (European) or 0, 1, 2, 3, 4 (National)) are permitted for use in the KWIRS on any building having a floor more than 18m above ground level.

Table 2.1 Reaction to fire classification summary table for Knauf external wall insulation and render systems for application to masonry and concrete backing walls each incorporating Knauf reinforcing mesh

Finish

Insulation type

Mineral fibre Expanded polystyrene

Classification Reference Classification Reference

Noblo4

B-s1, d01,2 BRE Test Report 282032 Issue 1

B-s1, d01,3

ETA-09/0284 SP2604

Conni S5 B-s1, d01,2 B-s2, d01,3

Addi S5 A2-s2, d0 ETA 13/0542 B-s2, d01,3 ETA-13/0555

Notes. 1. European classification in accordance with BS EN 13501-1 2. Test data obtained for insulation maximum density 150 kg/m3 3. Test data obtained for insulation maximum density 15 kg/m3 4. Maximum declared organic content: base coat 2.7%, finishing coat 2.0% 5. Maximum declared organic content: base coat 2.7%, finishing coat 7.1%

2.3.1 Other fire related construction detail requirements

2.3.4.1 Fixings One fire resistant (stainless steel) fixing per square metre of insulation board/slab is required as part of the fire performance requirements, further guidance is provided in BRE report BR 135.

2.3.4.2 Cavities Where cavities are present, they shall be separated by horizontal and vertical fire barriers at locations defined in the supporting documents to the building regulations.




Environment

2.4.1 Weather Resistance

The Systems will provide a weather resistant external wall insulation cladding to new and existing backing walls of brick and block masonry, dense and no fines concrete and sheathed light gauge steel and timber frame construction provided that the external finish and construction details at openings, fixtures and penetrations are installed and maintained in accordance with the requirements of this certificate and the supplier’s installation instructions.

2.4.2 Water Penetration Resistance

For timber frame and light gauge steel frame the systems shall comply with the appropriate structural requirement from the relevant parts of BS 5268 Structural use of timber or BS 5950 Structural use of steelwork in building respectively to ensure water penetration resistance is maintained.

2.4.3 Wind driven rain exposure classification

Where the wind driven rain exposure classification is very severe (refer to BS 5628-3 Code of practice for the use of masonry. Materials and components, design and workmanship and BS 8104 Code of practice for assessing exposure of walls to wind-driven rain) further information to ensure that appropriate construction detailing is provided under these exposure conditions can be found in BR 262 (1994) Thermal insulation - Avoiding risks. If in doubt, further advice from the certificate holder should be sought.

2.4.4 Condensation Risk Assessment

For KWIRS used for dwellings the project designer shall determine the condensation risk assessment in accordance with BS 5250 Code of practice for control of condensation in buildings. The condensation risk assessment shall be carried out in accordance with BS EN ISO 13788 Hygrothermal performance of building components and building elements. Internal surface temperature to avoid critical surface humidity and interstitial condensation. Calculation methods. Project specific condensation risk assessments are required for dwellings. Advice on construction detailing for thermal insulation materials is provided in BRE publication BR 262 Thermal insulation – avoiding the risks (Third edition).




2.4.5 Accumulation of condensation

Steel and timber framed construction shall be designed to avoid the accumulation of condensation. Once the design process is completed additional insulation shall not be placed within the frame cavity or against the inner face of the construction neither shall insulation be removed from the KWIRS.

2.4.6 Vapour control layer

For steel and timber framed construction it is essential that any vapour control layer on the warm side of the structure is fully effective. Advice on U-value calculation modifications can be found in BRE Digest 465 U-values for light steel frame construction.

Safety in use

2.5.1 Wind loading

Mechanical tests on KWIRS have shown that the systems can adequately resist wind forces anticipated in the UK for locations where suction on the system is no greater than 2kN/m2. The values shall be calculated in accordance with BS 6399-2 Loading for buildings. Code of practice for wind loads and suitable fixings designed and specified for each application.

2.5.2 Impact Resistance

The KWIRS has adequate resistance to impact damage in situations other than those with public access below a line 1.5m above adjacent ground or floor levels exposed to pedestrians with little incentive to exercise care. Additional reinforcement is required below this level.

Noise

Knauf UK does not claim any acoustic performance for its external wall insulation and render systems.

Energy

2.7.1 Additional thermal resistance

Knauf External Wall Insulation component can provide additional thermal resistance when applied to external walls. U-value calculations shall be carried out for external wall constructions in accordance with BS EN ISO 6946 Building components and building elements. Thermal resistance and thermal transmittance. Calculation method using the thermal conductivity values in Table 2.2.




2.7.2 U-value calculations

Advice on conventions for U-value calculations is provided in BRE Report 443 Conventions for U-value calculations. For light gauge steel frame, reference should be made to BRE Digest 465. Knauf UK provides U-value calculations for project specific configurations upon request.

2.7.3 Typical U-values

Typical U-values for solid external wall construction are given in Table 2.2 below. Table 2.2 Typical U-values for KWIRS applied to solid external brick wall construction

Insulation type Insulation thickness (mm) U-Value (W/m2K)

Mineral fibre 100 0.30

Expanded polystyrene 100 0.30

External wall construction details (from outside to inside) • External surface • Render (thin coat render) • Fixings • Insulation • 229mm solid brickwork • 12.5mm plasterboard • Internal surface

Durability

2.8.1 Hygrothermal testing

Hygrothermal testing for KWIRS has been carried out in accordance with ETAG-004 External Thermal Insulation Composite Systems (ETICS) with Rendering, for Systems incorporating expanded polystyrene and Conni S, Addi S, Noblo and SP260 finishes using standard alkali resistant glass fibre reinforcement mesh. The systems were assessed as freeze/thaw resistant.

2.8.2 Periodic maintenance

Periodic maintenance checks should be undertaken by the building owner on the external render finish particularly on joints, at the junctions with flashings and sills, and around any penetration through the render, e.g. for plumbing, flues, etc as for any render system. The Systems shall be maintained in accordance with the Knauf UK “Maintenance and care/repair manual”.




2.8.3 Design working life

The Systems can be considered to have a design working life of at least 25 years provided that the system has been installed in accordance with the requirements of the manufacturer and of this certificate and that any accidental damage to the finish is effectively repaired.

3 BUILDING REGULATIONS

General

The Knauf External Wall Insulation and Render Systems when used in accordance with this certificate and the certificate holder’s installation instructions can assist in demonstrating that the works within which they are installed will meet the stated requirements of the following building regulations and standards:

For England

The Building Regulations (2010), incorporating the latest amendments to the Approved Documents for use in England.

Regulation 4 Requirements relating to building work Regulation 6 Requirements relating to material change of use Regulation 7 Materials and workmanship A1 Loading B Vol. 1 Fire safety – Dwellinghouses B Vol. 2 Fire safety – Buildings other than dwellinghouses C2 Resistance to moisture L1A Conservation of fuel and power in new buildings L1B Conservation of fuel and power in existing buildings L2A Conservation of fuel and power in new buildings other than dwellings L2B Conservation of fuel and power in existing buildings other than dwellings




For Wales

The Building Regulations (2010), incorporating the latest amendments to the various Approved Documents for use in in Wales.

Regulation 4 Requirements relating to building work Regulation 6 Requirements relating to material change of use Regulation 7 Materials and workmanship A1 Loading B Vol. 1 Fire safety – Dwellinghouses B Vol. 2 Fire safety – Buildings other than dwellinghouses C2 Resistance to moisture L1A Conservation of fuel and power: New dwellings L1B Conservation of fuel and power: Existing dwellings L2A Conservation of fuel and power: New buildings other than

dwellings L2B Conservation of fuel and power: Existing buildings other than

dwellings

For Scotland

The Building (Scotland) Regulations 2004 incorporating the latest amendments to the various Technical Handbooks:

Regulation 8 Fitness and durability of materials and workmanship Regulation 9 Building standards applicable to design and construction Domestic 1 Structure 2 Fire 3 Environment 6 Energy Non-Domestic 1 Structure 2 Fire 3 Environment 6 Energy




For Northern Ireland

The Building (Northern Ireland) Regulations 2012 incorporating the latest amendments to the various Technical Booklets:

B Materials and workmanship C Site preparation and resistance to contaminants and moisture D Structure E Fire Safety F1 Conservation of fuel and power in dwellings F2 Conservation of fuel and power in buildings other than dwellings

Construction (Design and Management) – CDM Regulations

• Construction (Design and Management) Regulations 2015 • Construction (Design and Management) Regulations (Northern Ireland) 2007 (as

amended)

The certificate should form part of the information used by the client, CDM coordinator, designer and contractors to discharge their responsibilities under these Regulations.

4 INSTALLATION/PRACTICAL APPLICATION

General

The performance of the Systems depends on correct installation. They shall be installed strictly in accordance with the Certificate holder’s installation instructions, taking account of the delivery, storage and handling requirements of this certificate and the structural design engineer. The quality of installation actually achieved on specific sites is not covered by this certificate. Therefore it is recommended that the quality of installation and workmanship is subject to appropriate checks by a competent person for each installation.

Approved Installers

Installation of the Systems shall be carried out in accordance with the Knauf Technical Installation Manual and shall only be carried out by installers trained, approved, registered and monitored by Knauf UK.

Storage, handling and packaging

Products shall be stored in accordance with the Knauf Technical Installation Manual and with reference to the technical data sheet and materials safety data sheet for each product.




5 TECHNICAL APPRAISAL

Performance Tests

Performance tests and inspection of test data have been carried out to determine the properties and performance of the Systems when applied to external walls and include the following:

• Resistance to wind loading • Bonding properties • Performance in relation to fire

- Reaction to fire • Resistance to water penetration and water vapour transmission • Resistance to impact • Thermal properties • Durability

- Thermal cycling - Resistance to freeze/thaw cycles

Installation

Assessment has been made of the products and practicality of installation which was found to be suitably addressed by the certificate holder’s installation instructions. Existing installations for the Systems have been inspected.

Quality Control

5.3.1 Factory production control

Traceable records are maintained by the certificate holder. The manufacturer carries out checks at regular intervals to ensure the quality of the product is maintained within the defined product specification. BRE Global undertakes regular monitoring of the factory production against an agreed Quality Plan for each product.

5.3.2 Quality Management

Knauf UK operates processes and procedures that are in accordance with ISO 9001 Quality Management Systems.




Table 5.1 Summary of product performance for external wall insulation and render systems

Characteristic Test method Product

Insulation type

Mineral fibre EPS

Wool Volamit

Reaction to fire1 EN 13501-1 Insulation A1 A1 E

Reaction to fire2 See Table 2.1

Noblo SP260 B-s1,d0 B-s1,d0

Conni S B-s1,d0 B-s2,d0

Addi S A2-s2, d0

Fire resistance N/A See Note 2

Wind load resistance BS 6399-2 System + or – 2kN/m2

Impact (hard body) BS 8200 System See 2.5.2

Condensation and U-value calculations

BS 5250 & EN ISO 6946

System Example calculations show no harmful condensation risk, U-value calculations are project specific

Hygrothermal test ETAG 004 System Pass – At least 25 years

Water vapour transmission rates of finishes

ETAG 004 Render Equivalent air thickness sd < 1.0m

Freeze/thaw ETAG 004 Pass – At least 25 years

1 See Section 2.3 2 It is the responsibility of the specifier to ensure that the fire performance classifications are

adequate for the intended application and relate specifically to the System in use

Standards

The following British Standards and Codes of Practice, and other documents have been referred to for this assessment:

BS EN 12667:2001 Thermal performance of building materials and products.

Determination of thermal resistance by means of guarded hot plate and heat flow meter methods. Products of high and medium thermal resistance.




BS EN 13162:2008

Thermal insulation products for buildings. Factory made Mineral Fibre (MW) products. Specification

BS EN 13163:2008

Thermal insulation products for buildings. Factory made products of expanded polystyrene (EPS). Specification

BS EN13501-1:2007 +A1:2009

Fire classification of construction products and building elements. Part 1: Classification using data from reaction to fire tests

BS EN ISO 6946:2007

Building components and building elements. Thermal resistance and thermal transmittance. Calculation method

BS EN ISO 13788:2002

Hygrothermal performance of building components and building elements. Internal surface temperature to avoid critical surface humidity and interstitial condensation. Calculation methods.

BS EN ISO 9001:2008 Quality management systems. Requirements

BS 5250:2011 Code of practice for control of condensation in building

BS 5268-2:2002 Structural use of timber. Code of practice for permissible stress design, materials and workmanship

BS 5628-3:2005 Code of practice for the use of masonry. Materials and components, design and workmanship

BS 5080-1:1993 Structural fixings in concrete and masonry. Method of test for tensile loading.

BS 5080-2:1986 Structural fixings in concrete and masonry. Method for determination of resistance to loading in shear.

BS 5950-5:1998 Structural use of steelwork in building. Code of practice for design of cold formed thin gauge sections

BS 6399-2:1997 Loading for buildings. Code of practice for wind loads

BS 8104:1992 Code of practice for assessing exposure of walls to wind-driven rain

BS 8200:1985 Impact resistance of opaque wall components

European Technical Approval Guidelines: ETAG 004 External Thermal Insulation Composite Systems (ETICS) with Rendering




BRE Publications BR 135:2003 Fire performance of external thermal insulation for walls of multi-storey

buildings. 2nd edition

BR 262:2002 Thermal insulation – avoiding the risks (Third edition)

BR 443:2006 Conventions for U-value calculations

BR 465:2002 U-values for light steel frame construction

6 CONDITIONS OF CERTIFICATE ISSUE

Validity

This certificate will be valid for a period of three years from date of first issue. It will remain valid in so far as:

a. The materials and method of manufacture are unchanged or BRE Global has

assessed any changes and found them to be satisfactory b. The designs and specifications are unaltered from those examined by BRE Global. c. The certificate holder continues to have the product checked by BRE Global.

Health and Safety

This certificate and the recommendations herein do not purport in any way to restate the requirements of the Health and Safety at Work Act 1974 or any statutory or common law duty of care which exists now or in the future: nor is compliance with these recommendations to be assumed as satisfying the requirements of the said Act or any existing or future statutory or common law duty of care.

References to Other Documentation

Where reference is made in this certificate to any Act of Parliament, Regulation, Code of Practice, British or other Standard or other publications, it shall be construed as reference to such publication in the form in which it is in force at the date of issue of the certificate.

Patents

BRE Global make no representational warranty that any patent or similar industrial property right is valid or that the manufacture, use, sale, lease or any other dealing or disposition of the product in whole or in part is not an infringement of any patent or industrial property right not owned by the certificate holder.




Confirmation of validity

Confirmation that the certificate is current may be obtained from the BRE Global website (www.redbooklive.com).

http://www.redbooklive.com


Appendix to Certificate No: 159/13 Revision: 03


APPENDIX A - Figure A1 Typical masonry backing wall (Informative)




APPENDIX A - Figure A2 Typical framed construction wall (with cavity) (Informative)




APPENDIX A - Figure A3 Typical junction detail at roof level (Informative)




APPENDIX A - Figure A4 Typical junction detail at floor level (Informative)