A flushing product made of stainless steel 304 for a chimney with an inner diameter of 80 mm (outer diameter of 130 mm) for installing a double chimney without a roof.
The corresponding roof slope is 5° to 30°, which is about 1 inch to 6 inch slope in the Japanese roof slope.
If the top edge is not horizontal due to the wide range of slopes, you can use corrugated iron scissors to cut the top edge horizontally according to the slope you are using.
Unpainted product made of 304 stainless steel.
The size of the flashing is 400mm x 400mm, and there is a hole 195mm wide and 200mm long at the bottom.
Place a storm collar on top of it and caulk around the storm collar to prevent rainwater from entering.
Flushing and chimney caulking are not absolutely necessary.
As for the caulking material, it is enough to use silicon sealant sold at home centers for about 500 yen.
Even ordinary silicone has heat resistance of about 150°C, so there is no need to use expensive heat-resistant silicone.
Generally, the temperature outside the double chimney is about 70 degrees at a distance of 1 m from the wood stove, but it drops to about 40 degrees when it reaches the roof surface.