Breather Membranes

Keep water out, let buildings breathe

A high-performance breather membrane is the first line of defence behind cladding or masonry—blocking wind-driven rain while letting trapped moisture escape. Spechunter stocks the big names contractors trust:

• DuPont Tyvek Housewrap – the UK’s classic 120 g/m² BBA-approved wrap for timber-frame and masonry façades.

• Tyvek FireCurb® – Euroclass B-s1,d0 flame retardancy for mid-rise and non-combustible façades.

• Proctor Wraptite® self-adhered vapour-permeable air-barrier system.

All rolls are BBA or NHBC accepted, deliver ≥ 0.2 m³/m²/h wind-tightness and vapour resistance < 0.12 MNs/g—right in the sweet spot for UK condensation risk analysis.

Order before 12:00 and spend £200 ex-VAT for free next-day delivery. Call our building-envelope desk on 0118 922 7941 for WUFI checks or project take-offs.

Why buy breather membranes from Spechunter?

Proven weather protection

BBA certificates confirm Class W1 water holdout and UV durability behind rainscreens for up to 4 months exposure.

Airtightness without condensation risk

Vapour-open construction lets structural timber dry to the outside while the membrane’s air-tight layer slashes uncontrolled infiltration—easier SAP scores.

Flame-retardant options

Tyvek FireCurb and Wraptite®-SA meet external-wall requirements above 11 m in England and everywhere in Scotland (Euroclass B or better).

Everything in one basket

Grab matching Tyvek acrylic tapes, Wraptite flashing and EPDM interface membranes at checkout.

Choosing the right membrane

Installation essentials

1. Lap 100 mm horizontally, 150 mm at corners; face the logo outwards.

2. Seal penetrations with Tyvek or Wraptite system tapes.

3. Use stainless staples or plastic-headed clouts at 300 mm centres.

4. Counter-batten rainscreen façades to maintain a 38 mm drained cavity.

5. Integrate with DPCs and closers—link to ARC or Hyload membranes at sills.

Frequently asked questions

Do I need a vapour-control layer inside if I use Wraptite?
Yes. Wraptite controls external air leakage but remains vapour-open; install a separate VCL on the warm side.

How long can the membrane be left exposed?
Tyvek products: 4 months; Wraptite-SA: 90 days. Always check the cladding programme.

Are these membranes suitable behind open-joint cladding?
Only if UV-stable. Use Tyvek UV Facade or similar—call us for availability.

Next-day delivery—is it guaranteed?
Place your order before noon, hit £200 ex-VAT and see our delivery information for postcode exceptions.

Complete your airtight-and-weathertight package

• Interface tapes – Tyvek A-plus & FireCurb tapes

• Through-wall flashings – Visqueen High-Bond DPC

• EPDM systems – Obex FR membranes

Need condensation calculations or BIM objects? Contact us or phone 0118 922 7941.

Spechunter.co.uk – Chasing down specialist construction specifications since 1988. Fact checked & updated May 2025.