CERTIFICATE Date of issue 18.12.2008,

No VTT-C-3510-08 Updated 28.12.2010

NAME OF PRODUCT BOOSTR 10 underlay for roof and wall applications

MANUFACTURER ACTIS S.A Avenue de Catalogne 11300 Limoux France

PRODUCT DESCRIPTION BOOSTR 10 underlay is a water vapour permeable roofing and wall underlay, which acts also as wind barrier and complementary insulating material due to its thermal resistance value and high reflective properties. BOOSTR 10 underlay is manufactured from watertight metal coated layer, polyester fibre wadding and perforated metal coated reinforced polyolefin film which are fastened together by welding and gluing. The product can be used as roof underlays of pitched roofs with continuous or discontinuous roofing. The space between underlay and roofing must be ventilated. Underlay can be installed on the thermal insulation or there can be a non ventilated air gap between the thermal insulation and underlay. The product can be used as underlay in walls. Underlay can be installed in contact with thermal insulation or there can be non ventilated air gap between the thermal insulation and underlay. The space between underlay and outer cladding must be ventilated.

CERTIFICATION PROCEDURE This certificate is based on an initial type assessment of the product, and an inspection of the factory and the factory production control. The general certification procedures are based on the certification system of VTT Expert Services ltd. This certificate is valid until December 18, 2013. The conditions of validity are described in section 17.

To check the validity of this certificate, contact VTT Expert Services Oy, phone +358 20 722 4911. Using the VTT Expert Services Oy:s name in promotional material or reproducing and distributing any part of this certificate is allowed only by written permission of VTT Expert Services Oy.

VTT CERTIFICATE NO. VTT-C-3510-08

Date of issue 18.12.2008

Updated 28.12.2010

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TABLE OF CONTENTS 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 14. 15. 16. 17. 18. 19.

Product requirement standards Other standards and instructions Product description, marking and quality control Delivery and storage on site General Installation Structural performance Sound insulation / Acoustical performance Moisture behaviour Thermal behaviour / insulation Fire safety Durability Manufacturer’s instructions Testing and analysis for this certificate Other materials Validity period of the certificate Conditions of validity Other conditions

3 3 3 4 4 4 6 6 6 6 7 7 7 7 9 10 10 10

VTT CERTIFICATE NO. VTT-C-3510-08

Date of issue 18.12.2008

Updated 28.12.2010

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REGULATIONS, STANDARDS AND INSTRUCTIONS 1.

Product requirement standards

1.1 In the opinion of VTT BOOSTR 10 underlay, if used in accordance with the provisions of this certificate, will contribute to meet the relevant requirements of the Finnish building regulations as stated in the following: C2 C3 C4 E1

2.

Moisture, Regulations and Guidelines 1998, in accordance with clause 9 of this certificate Thermal insulation in a building, Regulations 2010 in accordance with clause 10 of this certificate Thermal insulation, Guidelines 2003, in accordance with clause 10 of this certificate Structural fire safety in buildings, Regulations and Guidelines 2002, in accordance with clause 11 of this certificate.

Other standards and instructions

2.1 The certificate holder has declared, that the following general recommendations are followed: RIL 107, 2000 Guidance for water and moisture insulation of constructions.

PRODUCT INFORMATION 3.

Product description, marking and quality control

3.1 BOOSTR 10 underlay is reflective water vapour permeable underlay, which consists of 3 separate layers, film-wadding layer-perforated film. 3.2 The dimensions and weights of the product is as follows: Property

Unit

BOOSTR 10

Nominal thickness Nominal weight Roll length Width

mm g/m2 m mm

11,5 365 33 1500

3.3 The underlay shall be marked according to the provisions in EN 13859-1 and in EN 13859-2, if product is CE-marked. Voluntary certification marks may also be used.

VTT CERTIFICATE NO. VTT-C-3510-08

Date of issue 18.12.2008

Updated 28.12.2010

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3.4 Internal quality control consists of process control and visual inspection of the product as well as weight per square meter and strength controls of the product and its raw materials. 3.5 External quality controls are carried out by VTT Expert Services Ltd according to a separate quality control contract.

4.

Delivery and storage on site

4.1 The underlay rolls are delivered to the site as rolls wrapped in plastics on a pallet . Each pallet or roll is labelled with the product name, the name of the manufacturer, the name of the certificate holder if different and dimensions of the product. 4.2 The delivery rolls also contain information of date of manufacturing. 4.3 The rolls must be stored in their packaging in dry conditions in such a way that dirt and dust cannot collect into the product surfaces.

DESIGN INFORMATION 5.

General

5.1 The design data given in this certificate is based on the assumption that construction solutions, fastening methods and other details given in this certificate will be followed together with the mentioned requirements, guidelines, standards and instructions.

6.

Installation

6.1 The roofing underlay shall be installed horizontally according to the instructions of the certificate holder. Installation can be performed in ordinary temperature conditions for building works (figure 1). 6.2 The maximum span between supports onto which the underlay shall be fastened is c/c 900 mm. All roofing underlay joints shall have an overlapping of at least 100 mm in roofs with slope 1:3 or more and 200 mm in roofs with slope below 1:3. All roofing underlay joints must be sealed with tape delivered together with the underlay. Tightening of the joints around openings like roof windows and ventilation pipes shall be perfectly conducted with this adhesive tape to guarantee the tightness of underlay. The underlay must not be in contact with the chimney. A safe distance from chimney must be created by a material resistant to fire. (See also annex A)

VTT CERTIFICATE NO. VTT-C-3510-08

Date of issue 18.12.2008

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6.3 The underlay is installed with the perforated facing inwards and tight breather watertight membrane facing outward. The underlay is fastened with corrosion protected staples or nails. The staples have the minimum length of 10 mm. However for wall application the length of staples should be chosen in regard to the support thickness. The back width of 10 mm is usually used but it could vary relating to the stapler model. Maximum staple distance along the edges is 100 mm. After stapling the overlaps are covered by designed ACTIS adhesive tape to prevent air leakage.

Figure 1 . Example of the horizontal installation 6.4 It is recommended to use intermediate supports between rafters. The underlay is stapled every 50 mm on the intermediate support. 6.5 After stapling the overlaps must be covered by designed ACTIS adhesive tape in such a way to coat the staples for ensuring a hermetic seal (see figure 2). The resistance to air permeability was measured by VTT with and without the intermediate support. Using the intermediate supports to fix the overlaps enhances the resistance to air permeability (see table 1).

Staple

Adhesive tape

Cross batten

BOOSTR 10

Figure 2 . Overlaps

VTT CERTIFICATE NO. VTT-C-3510-08

7.

Date of issue 18.12.2008

Updated 28.12.2010

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Structural performance

7.1 BOOSTR 10 underlay is non load bearing product. It will resist normal loads associated with installation and use. The product does not resist walking. 7.2 Security precautions against falling from a roof are necessary. During installation work in wet conditions more care should be taken due to a raise of slip risk. 7.3 The resistance to wind load of roofing underlays has not been evaluated, because the products are used only as temporary surface of the roof.

8.

Sound insulation / Acoustical performance

8.1 Influence of underlay on the sound insulation properties of the constructions has not been evaluated.

9.

Moisture behaviour

9.1 National Building Code of Finland, C2, Moisture, Regulations and instructions 1998 shall be followed in the design of the constructions taking into account the water vapour permeability of the roofing underlays. 9.2 Water vapour permeability of the underlay is presented in the table 1. 9.3 It is recommended that vapour barriers of the structures have Sd ≥ 18 m.

10.

Thermal behaviour / insulation

10.1 National Building Code of Finland, C3, Thermal Insulation regulations and C4 Guidelines give limits of the thermal resistances of the constructions and instructions of the air permeability of the wind barriers. 10.2 Air permeability and thermal conductivities of the underlay is presented in the table 1. 10.3 To measure the joint leakage, the air tightness measurement was carried out on the installed products using the recommended accessories. The results are given in table 1. The product itself can be considered airtight. 10.4 BOOSTR 10 underlay has reflective faces on both sides. The outer perforated foil is highly reflective. According to the standard ASTM C 1371-04A it has an emissivity of 0.14 (the material emit only 14% of energy received). Applying the non ventilated air gap is much more advantageous for these products. ACTIS has established by calculation, that when the metallised face of the underlay faces a 20 mm cavity, the product will provide additional thermal resistance which can be incorporated into U value calculations carried out in accordance with EN ISO 6946 (see table 2).

VTT CERTIFICATE NO. VTT-C-3510-08

Date of issue 18.12.2008

Updated 28.12.2010

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10.5 To ensure the thickness of the air cavities (≥ 20mm) over and under (if applicable) the underlay, the section dimensions of the counter battens should be carefully chosen.

11.

Fire safety

11.1 National Building Code of Finland, E1, Structural fire safety in buildings, Regulations and guidelines 2002, give requirements for fire safety of buildings and building products. 11.2 Fire behaviour of the underlay has been tested according to standard EN ISO 11925-2, Reaction to fire tests for building products- Ignitability when subjected to direct impingement of flame-Part 2: single flame source test. BOOSTR 10 roofing underlay meets the criteria of the Euroclass E.

12.

Durability

12.1 Ageing behaviour of the product is tested according to requirements of the standard EN 13859-1, "Flexible sheet for waterproofing. Definitions and characteristics of roof underlays. Part 1: Underlays for discontinuous roofing. The results are in the table 1. 12.2 BOOSTR 10 underlay is not intended to be used alone without weather protection.

INSTRUCTIONS FOR INSTALLATION AND USE 13.

Manufacturer’s instructions

13.1 Installation is performed according to the instructions of the manufacturer. The instructions shall be carefully followed in order to achieve the intended functional performance of the construction.

TECHNICAL ASSESSMENT 14.

Testing and analysis for this certificate

14.1 VTT has performed testing concerning properties of BOOSTR 10 underlay. The results are presented partly in the text and partly in the table 1. Water vapour permeability tests of BOOSTR 10 underlay has been carried out by Forschungsinstitut für Wärmeschutz e.V. München (FIW) according to EN 12572, C condition (table1).

VTT CERTIFICATE NO. VTT-C-3510-08

Date of issue 18.12.2008

Updated 28.12.2010

Table 1. A summary of test results of BOOSTR 10 underlay Property Water vapour permeability Sd value Core thermal conductivity, λ10 Thermal resistance

Unit

Test Method

kg/m2sPa m W/mK

EN 12572

m2 K/W EN 1928 and EN 13859-1, 200 mm/2h

Water tightness

Resistance to air permeability -with intermediate cross bars -without intermediate cross bars Tensile strength - longitudinal -transverse Elongation - longitudinal - transverse Resistance to tearing - longitudinal - transverse Flexibility at low temperature Dimensional stability - longitudinal - transverse Tensile strength after artificial ageing - longitudinal -transverse Elongation after artificial ageing - longitudinal - transverse Water tightness after artificial ageing

.

EN 12667

Test Result BOOSTR 10 2.5 x 10-9 0,082 0,038 0,303 Water tight W1

m3/m².h

EN12114/50 Pa

N/50 mm

EN 12311-1 and EN 13859-1 annex A EN 12311-1 and EN 13859-1 annex A

13.8 15.7

EN 12310-1 and EN 13859-1 annex B

169 193

%

N

(°C/Ømm)

%

EN 1109 EN1107-2

0,44 1,36 279 189

-30/10 -0.5 -0.4

N/50mm

%

EN 13859-1, annex C and EN 12311-1 and EN 13859-1 annex A EN 13859-1, annex C and EN 12311-1 and EN 13859-1 annex A EN 1928 and EN 13859-1, 200 mm/2h

283 177 16.2 11.7 Water tight W1

8

VTT CERTIFICATE NO. VTT-C-3510-08

Date of issue 18.12.2008

Updated 28.12.2010

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14.2 Thermal resistances of the underlay together with 20 mm non ventilated air gap can be exploited in on R value calculations of the structures in the cases where a non ventilated air gap is created as shown in roof figures 5, 6, 8,9 and 10 and wall figure 18 (table 2 and figures in the annex A). Table 2. Thermal resistances of products with 20 mm non ventilated cavity. Vertical flow

Horizontal flow Up

Down

Thermal resistance value plus a non ventilated cavity of 20 mm (m²K./W) BOOST’R 10

0.814

0.679

0.814

The thermal resistance value of the air gap was calculated by the manufacturer in accordance with EN ISO 6946 and RT 2005 (French Thermal Regulations) taking into account following parameters: Emissivity of perforated film = 0.14 Emissivity of insulating surface facing BOOST’R product = 0.9 Mean temperature value = 10°C Temperature difference =20°C

15.

Other materials

For tightening the joint of underlays the corrosion protected nails and staples must be used. The fixation by staples or nails must be completed by ACTIS adhesive tape recommended for BOOST R 10. Use of the intermediate batten supports enhance the air leakage resistance of structure. for the fixation of the intermediate battens between the rafters the use of an adapted batten support (see figure 3) is recommended. The batten section could be up to 40×40 mm. The supports are easily fixed by corrosion resistance staples between two rafters which have maximum axis distance of 90 cm. Figure 3. ACTIS intermediate batten support

VTT CERTIFICATE NO. VTT-C-3510-08

Date of issue 18.12.2008

Updated 28.12.2010

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VALIDITY OF THE CERTIFICATE 16.

Validity period of the certificate

This certificate is valid until December 18, 2013.

17.

Conditions of validity

The certificate is valid assuming that no fundamental changes are made to the product, and that the manufacturer has a valid quality control contract. A list of valid certificates is available from VTT Expert Services Ltd.

18.

Other conditions

The references made in this certificate to standards and instructions are valid in the format used at the time the certificate was awarded. The recommendations in this certificate concerning the safe use of this product are minimum requirements that shall be satisfied when using the product. The certificate does not override current or future requirements imposed by laws and statutes. In addition to the issues presented in this certificate, design, manufacturing and use shall follow appropriate construction methods. The manufacturer is in charge of the product’s quality and factory production control. In awarding this certificate, VTT Expert services Ltd does not bind itself to indemnification liability concerning personal injury or other damage that may directly or indirectly result from using the product described in this certificate. VTT Expert services Ltd finds BOOSTR 10 roofing underlay to be suitable for use in construction as described in this certificate. This updated certificate no. VTT-C-3510-08 has been awarded as described above to ACTIS S.A On behalf of VTT Expert Services Ltd on December 28, 2010

Lina Markelin-Rantala Lead Assessor

Liisa Rautiainen Assessment Manager

VTT EXPERT SERVICES LTD P.O.Box 1001, FI–02044 VTT, Tel. + 358 20 722 4911 Finland Fax + 358 20 722 7003

[email protected] www.vtt.fi Business ID 2297513-2

VTT CERTIFICATE NO. C-3510-08,

Date of issue 18.12.2008 ,

updated 28.12.2010

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APPENDIX A: Roof applications (For figure captions, see A10) principal installation procedures The product is laid over the rafters or the counter battens (Figure 4 to 7) and fixed using corrosion-resistant staples or nails. Counter batten with at least 30 mm thickness are then installed over the underlay to create a ventilated air gap. The tiling battens are fixed to the counter battens. A vapour barrier layer with Sd ≥ 18 m must be used to limit the water vapour transmission from inside through the insulation materials.

a) Non inhabited roof timbers attic.

Figure 4 b) Inhabited roof timbers attic. b.1 Insulating material is thinner than the rafters. There is a non ventilated air gap between insulating materials and the underlay membrane (figure 5).

Figure 5

VTT CERTIFICATE NO. C-3510-08,

Date of issue 18.12.2008 ,

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b.2 Insulating material is as thick as the rafters. Counter batten at least 30 mm thick are then installed over the rafters to create the non ventilated air gap.

Figure 6

b.3 BOOST’R underlay is directly laid on the insulating materials.

Figure 7

VTT CERTIFICATE NO. C-3510-08,

Date of issue 18.12.2008 ,

updated 28.12.2010

C) Solid sheathing installation

C.1 Sandwich panels.

Figure 8

C.2 Structural insulated panels.

Figure 9 C.3 Installation on the solid sheathing with Sarking boards.

Figure 10

A3

VTT CERTIFICATE NO. C-3510-08,

Date of issue 18.12.2008 ,

updated 28.12.2010

Installation details The following drawings display the details on how to join the underlays to the particulate parts of roofs structure. 1. Gutter.

Water tight membrane Thick insulating material

Figure 11

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VTT CERTIFICATE NO. C-3510-08,

Date of issue 18.12.2008 ,

updated 28.12.2010

2 Vent pipe.

Figure 12 3 Chimney (figures 13.1 and 13.2).

Safe distance from fire

Figure 13.1

Safe distance from fire

Figure 13.2

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VTT CERTIFICATE NO. C-3510-08,

Date of issue 18.12.2008 ,

updated 28.12.2010

4 Roof window.

Window frame

Figure 14

5 Roof valley flashing.

Sheet metal of zinc Underlayment Valley counter batten

Figure 15

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VTT CERTIFICATE NO. C-3510-08,

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6 Ridge details.

Ventilated

Non ventilated

Figure 16

Wall applications in timber frames Installation details concerning lapping and jointing for wall application are presented below: 1) The membrane should be fixed with a not perforated side facing outside in such a way as to shed water away from the sheathing. Upper layers should be lapped over lower layers. 2 ) Horizontal laps should be at least 50 mm and vertical laps 100 mm. 3) The membrane must be secured at regular intervals (maximum 90cm) with galvanised staples.

VTT CERTIFICATE NO. C-3510-08,

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There are two installation systems for wall applications: a) The traditional system for all membrane types (figure 17):

The traditional system has a gap between the membrane and the finishing exterior layer allowing the air circulation.

Outside

Inside

Figure 17 (top view)

VTT CERTIFICATE NO. C-3510-08,

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b) The system more adequate for the reflective membrane (figure 18):

By fixing the batten on the OSB board, a non-ventilated air layer of minimum 30 mm between OSB board and the membrane is created which decreases the thermal transmission of wall.

Outside

Inside

Figure 18 (top view)

VTT CERTIFICATE NO. C-3510-08,

Date of issue 18.12.2008 ,

updated 28.12.2010

Figure captions Figures 1 to 16: 1- BOOSTR 10 2- Tile batten 3- Counter batten 4- Ventilated cavity of minimum 20 mm 5- Rafter 6- Non-ventilated cavity 7- Thick insulating 8- Vapour control layer 9- Non-ventilated cavity of minimum 20 mm 10- Sandwich panels 11- Structural insulated panel 12- Membrane 13- Solid sheathing 14- Multilayer reflective insulation 15- OSB sheathing board 16- Adhesive tape 17- Deflector Figures 17 and 18: 1- BOOSTR 10 2- Outer cladding 3- Counter batten 4- Air grille 5- Ventilated cavity of minimum 20 mm 6- Non-ventilated cavity of minimum 20 mm 7- OSB sheathing board 8- Thick insulating 9- Structural timber frame 10- Vapour control layer 11- Batten 12- Inner lining

A10