TA-25 W Flat Roofing System
Verified by manufacturer 5 months ago
BBA Agrément Certificate
Certificate type
Torch applied, high performance SBS elastomeric membrane warm roof system for flat or sloping roofs.
Application
- Suitable for use for refurbishment and new build projects (where conditions allow).
- Suitable for use on all roof decks.
- Timber board roofs will require a nailed attachment layer in accordance with BS 8747: 2007 before application.
Description
Torch applied, high performance styrene-butadiene-styrene (SBS) elastomeric membrane warm roof system for flat or sloping roofs.
Features and benefits:
- Robust.
- Flexible.
- Slip resisting granule surface provides durability and puncture resistance for foot traffic.
- Heavy duty polyester composite metal lined vapour barrier provides a robust, watertight layer.
- Life expectancy of approximately 40 years.
- Manufactured in accordance with EN 13501-5: 2005.
- BBA certified.
- System accessories include rooflights, flashings, refurbishment outlets, vents, and edge trims (specified separately). Consult manufacturer for further details.
Components:
- Preparation: Langley Spray-On Primer.
- Air and vapour control layer: Torch-bonded Parevapo SBS (3.8 kg/m²).
- Insulation: Parafoam Ultra PIR Insulation (3.84 kg/m²).
- Waterproof covering, first layer: Adepar JS VV (2.7 kg/m²). Attached via self-adhesive strips.
- Waterproof covering, top layer: Elastoflex GS (5.92 kg/m²). Torch-bonded.
General information
Color | Manufacturer guidanceMultiple colour selections available. |
Finish | Textured Guidance for specification option: Slip resistant, granular surface. |
Material | Bitumen Guidance for specification option: SBS elastomeric bitumen. |
Warranty description | 25 year Guidance for specification option: Independently insured guarantee for materials and workmanship (valid when installed by approved contractors). |
Uniclass | |
CAWS | J41/10 Reinforced bitumen membrane warm deck roof covering J41/110 Built-up reinforced bitumen membrane warm deck roof covering |
Product range |
Specification data - Reinforced bitumen membrane warm roof covering systems
Preparation | |
Horizontal work | Langley Spray-On Primer. |
Skirtings and vertical work | Langley Spray-On Primer. |
Air and vapour control layer | |
Type | Parevapo SBS (3.8 kg/m²). |
Attachment | Torch-bonded. |
Insulation | |
Type | Parafoam Ultra PIR Insulation (3.84 kg/m²). |
Waterproof covering | |
First layer | |
Type | Adepar JS VV (2.7 kg/m²). |
Attachment | Attached via self-adhesive strips. |
Top layer | |
Type | Elastoflex GS (5.92 kg/m²). |
Attachment | Torch-bonded. |
Colour | Guidance for specification option: Available in several colours, consult manufacturer and insert requirements. |
Fire performance | Broof [t4]. Guidance for specification option: To BS EN 13501-5:2016. |
Resistance class | Resistance class (to MOAT 31): R4. Guidance for specification option: 'Resistance to damage’ rating achieved by Elastoflex GS (the highest level of acceptance). |
Weight | 16.26 kg/m². Guidance for specification option: Based on 120 mm insulation thickness. |
Vapour control layer | 3 mm. |
Insulation | 120 mm. |
Basecoat | 2.2 mm. |
Top coat | 5 mm. |
Overall thickness | 130.2 mm. |
BIM objects
NBS BIM Object Standard
This BIM object has been authored to meet the requirements of the NBS BIM Object Standard.
Find out more about the NBS BIM Object Standard.
| Platform | Compatible | Version |
|---|---|---|
 Revit | Revit 2017 | 1 |
 IFC | - | 1 |
Third party certifications
BBA Agrément Certificate
TA-25 BBA
Literature
TA-25 System Data Sheet
Case studies
Epsom Hospital
Waverley Court
Similar products from Langley Waterproofing Systems Ltd
Langley TA-20 W Flat Roofing System
Langley TA-30 W Flat Roofing System