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Twin Wall ( STORM COLLAR)   6" or 150 mm - Flying Dutchman Stores

Twin Wall ( STORM COLLAR) 6" or 150 mm

Used to ensure water tightness in the passage through the roof. It also protects the rubberised 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: woodstoves, gas coal effect fires, oil boiler and any solid fuel appliances.

TWPro and KC are HETAS Approved and is CE marked.
Designation Number
EN1856-1 T600 N1 D V2 L50040 G60.


TWPro and KC Twin Wall Insulated Chimney parts are secured together by using a Locking Band.
Make sure that you keep the required distance from the outside of the flue to any combustible material (wood, plaster board).


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