Thermoseal Firespec and Facing Foils

Bradford Thermoseal

Bradford Thermoseal offers a wide range of facing foils that provide an additional layer of reflective insulation on glasswool products.

Thermoseal Firespec
Light Duty Facing (729)
Medium Duty Facing (730)
Heavy Duty Facing (750)

Bradford Thermoseal Heavy Duty Facing (750) is a premium strength, heavy duty plain foil often adhered to Glasswool and Rockwool bulk insulation to satisfy the requirements of air conditioning industry to externally wrap ductwork, vessels and (SPI) sectional pipe insulation.

Bradford Thermoseal Heavy Duty Facing is a heavy duty plain aluminium foil often used for facing Glasswool and Rockwool bulk insulation. It consists of two layers of aluminium foil and kraft papers bonded with flame retardant adhesive, with additional strength provided by reinforced fibreglass scrim.

Features and Benefits

  • Extra weight, highly durable and easy to handle on large commercial sites
  • Excellent facing carrier for bulk insulation of Glasswool and Fibertex™ Rockwool
  • Excellent and cost effective thermal insulation
  • Provides ongoing physical protection against the elements
  • Reduces temperature variations and condensations inside the office, warehouse or your home
  • Improves comfort by weatherising your office, warehouse or your home, minimising your greenhouse gas emissions
  • Increases energy efficiency;
  • Ideally suited as a heavy duty facing of insulation material for industrial equipment, pipe sections and air conditioning ductwork.


Bradford Thermoseal Heavy Duty acts as a waterproof sarking when installed beneath the primary roofing material, providing a barrier against moisture, wind, heat, and dust penetration. Thermoseal's integral thermal insulation properties also contribute to keeping homes warmer in winter and cooler in summer. 

Additionally, installation of Thermoseal Heavy Duty sarking will add to the overall thermal performance of the domestic, industrial and commercial buildings, cold stores and cool rooms when a clear airspace of at least 20mm or more is provided at the reflective side of the foil face. It improves light diffusion and utilisation when used as an exposed internal roof lining.

Due to its unique construction, Thermoseal Heavy Duty has a low water vapour transmission rate making it an excellent vapour barrier for facing bulk insulation and SPI pipe sections. An ideal reflective facing for Glasswool and Fibertex Rockwool, Thermoseal Heavy Duty is suitable for applications where high tensile strength and impact resistance is required.


m2 per
Rolls per 
1000 60 60 25 15072
1000 300 300 - 15073
1200 60 72 25 15086
1200 300 360 - 15087
1350 60 81 33 15080
1350 300 405 - 15082
1500 500 750 - 15077

Heavy Duty Perforated Facing (750PERF)