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Roofers Choice
is a multi layer laminate film composite made of polyolefin materials,
resulting in a pitched roof underlay that has high vapour permeability
but is also highlywater resistant.
Roofers Choice can be
installed without the need for roof space ventilation, and is suitable
for both Commercial and Domestic buildings, it is the ideal roof underlay
for Warm and Cold Pitched Roofs. Manufactured without the use of CFC’s
Roofers Choice is 100% recyclable and is very durable with high tensile
and nail tear strength properties. These, coupled with excellent UV
and heat stability properties ensure a life-span in excess of 30 years.
Roofers Choice breathable
membrane has received BBA Approval and complies with BS5534-2003 Code
of Practice for slating and tiling and NFRCTB6. It also meets technical
requirement R3 in relation to NHBC standards, chapter 7.2 pitched
roofs. Recommendations for the use of vapour permeable membranes in
pitched roofs are contained in BS 5250 : 2002 ‘Code of practice
for control of condensation in buildings’.
Technical Data: |
| Property |
Units |
Value |
| Weight |
g/m² |
122 |
| Water Vapour Resistance |
Sd (M) MN/sg |
c.0.02 0.19 |
| Water Vapour Transmission |
g/m²/24 hr |
1065 |
| Fire Rating |
- |
B2* |
| Exposure Times UV Degradation |
- |
3/4 months |
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