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PHS Sd Variable Plus Airtight Membrane is a high performing air tightness and moisture control. Ideal for both new-build and retrofit building projects, this advanced membrane is designed to meet the evolving requirements of the construction industry, ensuring energy efficiency and long-lasting protection.
Key Features:
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Versatile Sd Value: The PHS Sd Variable Plus membrane offers variable Sd value, providing excellent vapour control and preventing moisture from traveling into the building fabric and condensing due to reduced temperatures. This feature provides variable diffusion resistance which allows it to change its diffusion based on the environmentent, ensuring optimal performance throughout the year, adapting to seasonal changes.
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Airtight Seal: This airtightness membrane is made using a mesh reinforced material, that helps create an airtight layer that dynamically adjusts based on the humidity of the environment, preventing condensation build up and moisture damage.
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Durable and Long-Lasting: Airtight membrane is robust and flexible. It is hoghly tear- resistant making it easy to use and install
Application:
- Suitable for Air-Injected Insulation & Insulation Mats
- This variable Sd membrane is suitable for use in flat roof and retrofits.
Application Instructions:
- Lay the airtight membrane so that the printed side is facing the fitter.
- The membrane should be applied perpendicular to the direction of the application surface i.e. studs, rafters and joists
- It should be fixed with staples every 150mm or with PHS Double Sided Tape.
- PHS Argo Joining Tape or a suitable PHS Grommet should be used for penetrations.
- For bonding barrier overlaps, penetrations and repair spots, PHS Argo Joining Tape or a similar tape is recommended.
- For connections to concrete or masonry PHS Internal Adhesive Sealant is recommended.
- Ensure there is a 100mm overlap of the membranes and tape with PHS Argo Joining Tape or another suitable tape.
| Product Type | Variable SD Airtight Membrane |
| Brand | PHS |
| Product Code | PHS variable Sd |
| Length | 50M |
| Width | 1.5 M |
| Coverage | 75 Sqm |
| Colour | White (Transparent) |
| Water Vapour Transmission (Sd) (m) | 0.4 - 35m (EN 12572) |
| Reaction To Fire | Class E |
| Applications | Flat Roof and retrofits |
| Delivery Terms | |
|---|---|
| Order Value (Ex VAT) | Delivery Charge (Ex. VAT) |
| £325.00 | Free Delivery |
| Below £325 | £14.00 - £19.00 (Depending on postcodes) |
Returns, Cancellations and Refunds:
- You are free to cancel your order before we send you an order confirmation email and get a full refund
- Once the order is confirmed and an estimated delivery date is issued via email, Orders cannot be cancelled.
- Incorrectly ordered Goods can be returned within 14 days of delivery at our discretion. The customer is responsible for ensuring the goods are returned back to the address provided, in good condition where they will be inspected prior to processing any refunds.
- For incorrect, damaged or faulty products, please contact us immediately after you receive delivery and we will assist accordingly.
Product Features
- One roll of PHS Sd variable membrane covers 75 Sqm. It is 1.5M wide and 50M long.
- The Sd variable feature provides variable diffusion resistance which allows the membrane to change its diffusion based on the environment
- Made with triple layer fabric, high performance membrane, made from non-woven PP fabric
- Ideal for internal use. Suitable for flat roofs and retrofits.
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