Alucushion® / Bubblefoil® FR (Fire retardant grade) White (Code 2906) and Alucushion® / Bubblefoil® FR (Fire retardant grade) Double-sided (Code 1983).


Alucushion® / Bubblefoil® FR (Fire retardant grade) is manufactured by a continuous lamination process of low density polyethylene and aluminium foil with sealed bubbles of air between the two outer laminates. The thousands of individually celled air bubbles created during the manufacturing process, form a column of immobilised dry air, effectively countering heat loss through convection and conduction. Add to this the low emissivity and high reflectivity of the aluminium foil surface, and it's advantages as a heat transfer barrier become obvious.

Alucushion® / Bubblefoil® FR (fire retardant grade) is the cost effective solution for most roof insulation applications.

Product Info



  •     Strong, light and flexible with excellent tear resistance
  •     Heat stabilized for durability and effective in a temperature range from -20C° to 80°C.
  •     Non-toxic, inert and vermin proof
  •     Waterproof - no membrane necessary under roof tiles or sheeting
  •     Aesthetically pleasing finish with good light reflectance
  •     Acknowledged by the trade as the easiest thermal insulation on the market to install


Properly installed under normal environmental conditions, Alucushion® / Bubblefoil® FR will last the lifespan of the roof under which it has been installed. Alucushion® FR is tested and evaluated according to SABS 1381 (Materials for Thermal Insulation of Buildings) Part 4: Reflective Foil laminates, rolls, sheets and sections.

Fire Performance


Alucushion® / Bubblefoil®FR (fire retardant grade) has been tested by Firelab and found not to cause fire to spread when used as an over-purlin type roof insulation material. The product contains a highly advanced fire retardant, and is tested to the SANS 428 standard (Fire testing of building insulation materials, components and elements used for roofs) as part of SANS 10400 Part T of the National Building Regulations.

Thermal Values

Alucushion® / Bubblefoil®FR White (Code 2906) - 0.99 m²k/w

Alucushion® / Bubblefoil®FR Double-sided (Code 1983) - 1.35 m²k/w


Above thermal resistance (R-values) are as tested by the SABS and include air gaps of 25mm. Test reports available upon request.

Fire Ratings


Alucushion®/Bubblefoil® FR White Code 2906 – B/B1/2/H only (SP)

Alucushion®/Bubblefoil® FR Double-sided Code 1983 – B/B1/2/H only (SP)


Fire test reports available upon request.

Product Specs

Material Thickness - 4mm

Roll width - 1250mm

Roll length - 40m

Roll cover - 50m²

Effective coverage - 46m²

Brochure Downloads


Envirotuff & Sisalation Brochures


Click to Download: Envirotuff-200 Brochure

Click to Download: Envirotuff-199 Brochure

Click to Download: Envirotuff-200 Brochure

Click to Download: Envirotuff-201 Brochure

Click to Download: Envirotuff-202 Brochure

Click to Download: Envirotuff-203 Brochure

Click to Download: Sisalation 405 Brochure

Click to Download: Sisalation FR405 Brochure

Click to Download: Sisalation FR430 Brochure