DuPont™ Tyvek® Trifecta™ A2 Fire Rated External Breather Membrane - 1.5m x 25m (37.5m²)
Product Code:
37.5 m²
Estimated Delivery:
3 - 7 working days
Please get in touch for a more accurate lead time.
£540.00 inc. VAT 540.00
£450.00 ex. VAT
£14.40 per m² (inc. VAT)

Tyvek® Trifecta is a non-combustible and robust breather membrane suited for high-rise and high-risk commercial and residential buildings with 3-in-1 underlaying properties of A2 (s1,d0), W1 and 0.416 MNsg / SD 0.08m.​

Tyvek® Trifecta doesn’t produce droplets or emit smoke when subjected to flame, making it a great choice for fire risk averse build-up designs. It is engineered for fast and easy installation with non-combustible A2 tape.

Airtight and watertight yet vapour-open, the Tyvek® Trifecta breather membrane also contributes to energy conservation and climate control, improving the comfort of occupants and contributing to higher internal air quality.​

Key points :

Performs to Euroclass A2 (s1, d0) standards

Highest level W1 class water-holdout

Superior breathability to 0.416 MNsg / SD 0.08m

All-in-one weatherproofing solution

Specification :

Width: 1.5m
Length: 25m
Pack Coverage: 37.5 m²
Mass per unit area: 400 g/m²
Reaction to fire: A2-s1, d0 (with Tyvek 1310FR Tape)
Water Vapour Transmission Sd-Value: 0.08 m
Water Vapour Resistance: 0.4 MN.s/g
Water Tightness: W1
Tensile Force:
- MD: 4000 N/50mm
- XD: 3500 N/50mm 

Datasheets & Documents.
If you require a Safety datasheet (SDS) for this product please get in touch.
If you require a BBA Certificate for this product please get in touch.