ThermaFlue is a high quality insulating sleeve for flexible flue liners. Each sleeve is hand manufactured and inspected to exacting standards. The sleeve is stitched with Aramid sewing thread, ideal for high stress applications requiring extreme strength and heat protection. Each length has an overlap collar with a D-G link system that ensures consistent thermal insulation. Adjustable hook and loop fasteners facilitate a taut fit around the flexible flue liner. With additional flame retardant Velcro fastenings.
The inner wall is a high quality non-flammable needled glass fibre that provides excellent mechanical resistance and stability. The outer wall is a moisture repellent inflammable silicone coated material. ThermaFlue is guaranteed for 10 years .
ThermaFlue is manufactured in one metre sections and available in two widths. TH5-6 is suitable for 125mm and 150mm diameter liners and TH7-8 for 175mm and 200mm diameter.
ThermaFlue has been tested to BS EN1856-2:2009 with a Designation T450 N1/P1/P2 D or W Vm (L*****)O. In the case of a chimney fire like the liner it must be replaced. Please see fitting instructions for details. It is capable of withstanding higher temperatures but must be replaced, like the liner itself, after a chimney fire.
A heavy duty ThermaFlue wrap for extreme temperatures is available (ThermaFlue Plus) also tested to BS EN 1856-2:2009 Designation T600 N1/P1/P2 D or W Vm(L*****) G. Details available on request.