Breather-Foil FR
CI/SfB(47)
Rn7
FULLY PATENTED
Certificate No. 090/02
FR
Manufactured in UK and made
to a Quality System meeting the
requirements of BS EN ISO 9002
Breather-Foıl
INSULATING FIRE RETARDANT
Breather/Venting Membrane
FOR TIMBER FRAME MODULAR HOUSING APPLICATIONS
Out-performs Breather Membrane
NOW
AVAILABLE
2.62m wide rolls!
Independently Tested
for Breathability
Speed up your
production!
Fully Waterproof
Can Improve U-VALUE To
0.27 W/m2K! (See back page)
YOUR COMPANY LOGO AND
COLOURED MEMBRANE
HERE!
Call: 01909 721 662
For Details
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FIRE RETARDANT
CFC/HCFC Free
PLASTERBOARD
VAPOUR CONTROL
LAYER
SHEATHING BOARD
GLASS FIBRE INSULATION
75mm BREATHABLE
OPEN LAP TO ALLOW
MOISTURE TO ESCAPE
Breather-Foil FR
FOIL FACING OUTWARDS
STAPLED TO PLYWOOD
WALL TIE
OUTER BRICKWORK
CAVITY
CHIPBOARD FLOORING
STOPS 10MM SHORT
OF STUD
STUD
SOLE PLATE
S
RK
KWO
NCE
ADVA
FLOOR JOIST
FOIL-TEC
DOUBLE
100mm BLOCK WORK
DPC
CONCRETE INFILL
VENTED AIR SPACE
CONCRETE
OVERSITE
COMPREHENSIVE FIXING DETAILS ARE AVAILABLE UPON REQUEST
www.ybsinsulation.com
Specially developed for use in timber-frame and
modular building construction, Breather-Foil FR can
greatly increase the U-value of the timber-frame wall.
Whether pre-fabricated or assembled on site,
Breather-Foil FR can afford the designer and
contractor maximum flexibility when detailing
timber-frame walls, without the expense of thicker
timber frames or higher priced materials.
The Breather-Foil FR timber-framed wall system
creates a wind-tight, draught-free, weather-sealed,
yet vapour-permeable enclosure, when used in
conjunction with external cladding, such as
tile-hanging, masonry or weather-boarding.
Breather-Foil FR is available with or without
a removable coloured membrane (which can carry
your company logo!).
FR
Breather-Foıl
Manufactured in UK and made
to a Quality System meeting the
requirements of BS EN ISO 9002
INSULATING FIRE RETARDANT
Breather/Venting Membrane
FOR TIMBER FRAME MODULAR HOUSING APPLICATIONS
The Breather-Foil FR
timber-frame wall system
also offers the following
installation benefits:
• Breather-Foil FR protects the timber frame components during construction
• Breather-Foil FR details and installation procedures apply regardless of cladding type
• Breather-Foil FR will protect the timber and insulation components from the elements
Breather-Foil FR - timber frame build up
Breather-Foil FR protects thetimber frame
Vapour
Control Layer
PLASTERBOARD
prevents
VAPOUR CONTROL
LAYER
water vapour
entering
SHEATHING BOARD
GLASS FIBRE INSULATION
75mm BREATHABLE
OPEN LAP TO ALLOW
MOISTURE TO ESCAPE
Breather-Foil FR
FOIL FACING OUTWARDS
STAPLED TO PLYWOOD
Breather-Foil FR
the wall.
repels water entering
across the cavity.
Runs over horizontal
laps.
WALL TIE
OUTER BRICKWORK
CAVITY
CHIPBOARD FLOORING
STOPS 10MM SHORT
OF STUD
STUD
BUT any water vapour
that does enter the wall
can exit through the
SOLE PLATE
unique open bubble
structure and out of the
FLOOR JOIST
FOIL-TEC
DOUBLE
open laps.
(Tested to BS EN 12153:2000 for
100mm BLOCK WORK
DPC
water-tightness and air permeability)
VENTED AIR SPACE
CONCRETE INFILL
CONCRETE
OVERSITE
Vapour flow detail at
the reverse of
Breather-Foil FR
COMPREHENSIVE FIXING DETAILS ARE AVAILABLE UPON REQUEST
Breather-Foil FR INSTALLATION DETAILS
FACTORY ASSEMBLY
The timber framework is to be constructed with the sheathing board in
position. Breather-Foil FR is rolled out into position and then stapled to
the sheathing board. An overlap of 200mm must be allowed at the lower
edge of the panel. This is to allow for coverage of the lower sole plate or
upper floor joists. An overlap of 150mm must be allowed at the right hand
edge of the panel. This is to allow for coverage and sealing of the vertical
joint on assembled panels. The end overlap and the bottom overlap
should not be stapled, but left loose for site fixing.
All mid panel horizontal joints have an overlap of 75mm. The upper layer
must overlap the lower layer to allow any penetrating water to be dispersed
to a safe outlet. These horizontal laps are to be left open to allow the panels
to breathe. The location of the timber studs should now be highlighted with
indelible ink to allow for future accurate positioning of the wall ties.
1.35m Rolls
RE
NOW
AVAILABLE
2.62m wide rolls!
MO
VE
Openings are cut and
stapled back - or can
be cut flush to edges.
CO
LOU
R ED
PL E
Timber studs are indicated on
foil surface with marker pen.
Speed up your
production!
MEMB
R A NE A
AS
S BR IC
ER
EM
OV
EC
OLO
U R ED
PL
MEMB
EA
R A NE
SE
RE
MO
VE
Staples
COL
OURE
D ME
MBR
A NE A
S BRI
75mm Open Breather Lap
BOTTOM - 200mm overlap
MUST NOT BE STAPLED
AS BR
CKWO
ICKWO
R K AD
KWOR
RK AD
VANC
E
K ADVA
NCES
VANCE
S
S
Floor Jointing
75mm Open
Breather Lap
Where the floor joists are greater than 150mm, a
Breather-Foil FR jointing strip of 270mm or
337mm is to be used. When stapling, ensure
that the overlaps are face downwards.
EDGE - 150mm overlap
MUST NOT BE STAPLED
Breather-Foil FR
Timber
Frame
NOTE: Breather-Foil FR is a highly reflective material. To avoid on-site glare, YBS
apply a tinted* membrane which must be removed before the brickwork progresses.
Plywood
Filler Piece
Sheathing Board
Joist
Any window and door openings are to be cut out
with the Breather-Foil FR and can now be turned
inside the opening and fixed to the studwork or
cut flush to the edges of the opening.
SITE WORK
Panels are erected in to position with the overlaps to the bottom and to the right (looking from
outside). After fixing the panels, the vertical
overlaps are stapled.
STACKING/TRANSPORT
Stack and strap the panels, for transport, as
normal. The bubbles compress slightly under
load but DO NOT burst. They will reform once the
panel is erected. The smooth surface of BF-FR
means the timber panels slide off each other
resulting in less damage.
YBS Breather-Foil FR wall ties are fixed
along the ’marked’ vertical stud line as the
external brick wall is built. The anti-glare
membrane should be peeled off over the ties as
the brick work progresses.
SITE WORK EXTERIOR
If left exposed use edge battens fixed all around
the perimeter to help prevent wind lifting and
damaging the Breather-Foil FR in extreme
conditions.
Panels slide
in to position
YOUR LOGO HERE*
Breather-Foil FR
cut flush to edge
PLEASE R
EMO
RED MEM
VE COLOU
B
NE AS BRIC
Protective film
is removed as
brickwork
progresses
KWO
Marker pen lines
showing stud locations
Breather-Foil FR
Jointing Strip
Sheathing Board
Timber
Frame
Breather-Foil FR
CLADDINGS FOR TIMBERFRAMED WALL SYSTEMS
Breather-Foil FR can be used in
conjunction with most external claddings,
such as tile-hanging, masonry or weatherboarding, as shown below.
PROFILE BOARDING
Breather-Foil FR
75mm
Open
Breather
Lap
INSULATION
S
VE
REMO
COLO
URE
MB
D ME
NE A
NCES
ADVA
K
R
KWO
BRIC
COUNTER
BATTEN
BATTEN
CLADDING
TILE HANGING
SE
PLEA150mm Foil Overlap
Breather-Foil FR
stapled on to next panel
INSULATION
Timber Frame Ties
R
AS B
ICK
W
ORK
AN
ADV
PLE
CES
Air Vent
200mm overlap
- to cover Floor Joists
TILES
TILE
BATTEN
COUNTER
BATTEN
Floor Joists
Sole Plate
* Various coloured anti-glare membranes are available - call:
01909 721 662
With Brick
Technical Data - Breather-Foil FR U-Values
A
B
U-Value to 0.35
89mm stud - standard glass fibre
Thickness
Thermal
Thermal
Conductivity Resistance
(mm)
(W/mK)
(m2K/W)
Outside surface
resistance
Brick, External
C
U-Value B to 0.3
U-Value C to 0.3
89mm stud - high performance glass fibre
Thickness
Thermal
Thermal
Conductivity Resistance
(mm)
(W/mK)
(m2K/W)
95mm stud - plus type glass fibre
Thickness
Thermal
Thermal
Conductivity Resistance
(mm)
(W/mK)
(m2K/W)
-
-
0.040
-
-
0.040
-
-
0.040
102.50
0.770
0.133
102.50
0.770
0.133
102.50
0.770
0.133
bridged by 17.2% Mortar (102.5mm)
bridged by 17.2% Mortar (102.5mm)
bridged by 17.2% Mortar (102.5mm)
BF-FR Cavity
50.00
-
0.665
50.00
-
0.665
50.00
-
0.665
BF-FR Bubble
4.00
-
0.125
4.00
-
0.125
4.00
-
0.125
OSB board
9.00
0.130
0.069
9.00
0.130
0.069
9.00
0.130
0.069
Glass fibre
89.00
0.044
2.223
89.00
0.033
2.697
95.00
0.035
2.714
bridged by 15% Timber (89.0mm)
bridged by 15% Timber (89.0mm)
Polythene, 500 gauge
Plasterboard
Inside surface resistance
-
-
-
-
-
-
-
-
-
12.50
0.190
0.066
12.50
0.190
0.066
12.50
0.190
0.066
-
-
0.130
-
-
0.130
-
-
0.130
U-value, Combined Method:
U-value, Combined Method:
U-value, Combined Method:
0.30W/m2K
0.35W/m2K
D
With Block and Render
bridged by 15% Timber (95.0mm)
0.30W/m2K
E
F
U-Value - Dense Block to 0.35
U-Value - Dense Block to 0.3
U-Value - Lightweight Block to 0.27
89mm stud - standard glass fibre
95mm stud - plus type glass fibre
95mm stud - high performance glass fibre
Thickness
Thermal
Thermal
Conductivity Resistance
(mm)
(W/mK)
(m2K/W)
Outside surface
resistance
Render
Block
Thickness
(mm)
Thermal
Thermal
Conductivity Resistance
(W/mK)
(m2K/W)
Thickness
(mm)
Thermal
Thermal
Conductivity Resistance
(W/mK)
(m2K/W)
-
-
0.040
-
-
0.040
-
-
0.040
19.00
100.00
1.000
1.130
0.019
0.088
19.00
100.00
1.000
1.130
0.019
0.088
19.00
100.00
1.000
0.270
0.019
0.370
bridged by 6.6% Mortar (100mm)
bridged by 6.6% Mortar (100mm)
bridged by 6.6% Mortar (100mm)
BF-FR Cavity
50.00
-
0.665
50.00
-
0.665
50.00
-
0.665
BF-FR Bubble
4.00
-
0.125
4.00
-
0.125
4.00
-
0.125
OSB board
9.00
0.130
0.069
9.00
0.130
0.069
9.00
0.130
0.069
Glass fibre
89.00
0.044
2.023
95.00
0.035
2.714
95.00
0.033
2.879
bridged by 15% Timber (95.0mm)
bridged by 15% Timber (89.0mm)
Polythene, 500 gauge
Plasterboard
Inside surface resistance
bridged by 15% Timber (95.0mm)
-
-
-
-
-
-
-
-
-
12.50
0.190
0.066
12.50
0.190
0.066
12.50
0.190
0.066
-
-
0.130
-
-
0.130
-
-
0.130
U-value, Combined Method:
U-value, Combined Method:
0.35W/m2K
0.30W/m2K
U-value, Combined Method:
0.27W/m2K
Many U-value combinations are available. All U-values using Combined Method - timber content at15%. Other materials to BRE conventions
for U-values or using manufacturers’ certified data. Mineral fibre to new European CE marking. See technical references listed below.
Please contact
YBS Technical on:
01909 721 662 for more
information.
Element:
Wall
Exposure:
Normal
Internal surface emissivity:
High
External surface emissivity:
High
Building use:
BS5250 dry/
moist occupancy
Breather-Foil FR Bubble
Breather-Foil FR Cavity
Breather-Foil FR - Total Thermal Resistance
Nail Tear Resistance BS4016 (wet & dry)
Environmental
Dimensions
Thickness
Width
Length
Jointing Strip (to suit truss depth)
Foil Tape
Measured Values of Airflow
800
OSB board
open joints
BreatherFoil FR
700
600
Airflow (m3/hour)
Rainscreen/Watertightnes
s Breather-Foil FR has been
successfully tested for water
tightness and is an effective
rainscreen.
(EN 1254:1999 Class R5).
Breather-Foil FR - Technical Specification
Construction Type
0.125m2 K/W
0.665 m2 K/W
0.790 m2 K/W
0 min 70N
CFC & HCFC Free
4mm
1350mm/2620mm
50m/25m
270, 337, 450mm x 50m
50m x 75mm (24 rolls/box)
OSB board
+ breather paper
500
400
Technical References
Tested
• Building Regulations 2000 Approved
Breather-Foil FR:
Documents L1 & L2.
• Emissivity measured by National
• Building Standards Part J Sept. 2001
Physical Laboratory.
• BRE publication ‘Thermal Insulation:
300
Avoiding the risks’.
• Thermal resistance measured by
• BRE Paper IP12/94 ‘Assessing the
200
Independent Test Laboratories.
Condensation Risk and Heat Loss at
• Tested to BS EN 12153:2000
Thermal Bridges Around Openings’.
100
for water tightness and air
• BS EN ISO 6946 : 1997 Building
components and building elements -
permeability.
Thermal resistance and thermal
0
0
50
100
Test Pressure (Pa)
150
200
• Manufactured in the UK and
transmittance - Calculation method.
• British Standard References: BS 5250
In airflow tests by the BRE, Breather-Foil FR
allowed more air out than a standard breather membrane.
Control of Condensation in Buildings.
meeting the requirements of
BS EN ISO 9002.
Yorkshire Building Services (WHITWELL) Ltd
Printed using Environmentally Friendly Paper - 100% chlorine free
© Yorkshire Building Services ( WHITWELL ) Ltd
The Crags Industrial Park, Morven Street, Creswell, Derbyshire, S80 4AJ
Tel: 01909 721662
Fax: 01909 721442
sales@ybsinsulation.com www.ybsinsulation.com
B-F/FR/3938/4336/05/04
Hygrothermal research
by the BRE and supervised
by TRADA Breather-Foil FR
was subjected to extreme
internal and external conditions
and left for an extended period
of time. Moisture content of the
timber structure was well within
acceptable limits.
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