NAME OF PRODUCT

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
2
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
3
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
4
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
Updated 28.12.2010
5
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
6
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
7
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
9
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
10
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
A1
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 ,
updated 28.12.2010
A2
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
A4
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
A5
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
A6
VTT CERTIFICATE NO. C-3510-08,
Date of issue 18.12.2008 ,
updated 28.12.2010
A7
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,
Date of issue 18.12.2008 ,
updated 28.12.2010
A8
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,
Date of issue 18.12.2008 ,
updated 28.12.2010
A9
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