Blowing Wool - Supafil 34

Supafil 34


Masonry cavity walls


Blowing Wool


Supafil® 34 is a high performance, non-combustible Blowing Wool, manufactured with a water repellent additive, designed for installation by approved technicians in new build external masonry cavity walls.


  • British Board of Agrément approved
  • Excellent thermal performance.
  • Non-combustible A1
  • Euroclass Reaction to Fire classification
  • Manufactured using a water repellent additive to prevent water ingress.
  • Provides a full-fill solution, even if walls are built out of tolerance
  • Dry system requiring no mixing on site
  • Installed by approved technicians, with no need for product storage on site
  • Awarded DECLARE 'Red List Free' Label



Thermal Conductivity (W/mK)Euroclass Reaction to Fire ClassificationArea per Pallet (M²)Pack Dimensions

Certification & Memberships

Supafil 34 BBA logo - Certificate No: 11/4857
Eurofins Gold
Green Guide Rating A+
CE Marking
TÜV Nord
Red List Free

Declare Label

Our Supafil Blowing Wool product range has been awarded the DECLARE 'Red List Free' label. This allows product transparency disclosure that identifies where a product comes from, what it's made of, and where it goes at the end of its life.