Used to ensure water tightness in the passage through the roof. It also protects the flashing from extreme weather conditions. It should be installed about 25mm above the tallest part of the flashing. Once secure run a bead of silicone around the top edge and the flue to complete the water tightness.
For use on solid fuel and gas/oil appliances. eg: wood burninig stoves, multi fuel stoves gas coal effect fires, oil and gas boiler and any solid fuel appliances.
Outer skin is made from 304 grade stainless steel and is 0.4mm thick. Inner skin is made from 316 grade stainless steel and is 0.4mm thick. Insulation is compressed rockwool giving a density of 200kg/m3. All parts are fully welded. Distance to combustibles is 50mm.
KW is HETAS Approved and is CE marked.
EN1856-1 T600 N1 W V2 L50040 G50.
EN1856-1 T200 W V2 L50040 O20.
KW twin wall insulated chimney parts are secured together by using a locking band. Make sure that you keep a distance of 50mm from the outside of the flue to any combustible material (wood, plaster board).
KW is sold under separate brand names in the UK. Components may be branded as KW, KC or TW Pro.