The FAMCO WDCSS wind directional chimney cap is designed to be an effective solution to chimney downdraft in windy areas. The cap separates the wind stream as it flows over the cap, while the rotating hood is kept in proper position (relative to the wind) by the wind vane. Air movement past the hood creates a partial vacuum in the flue, enhancing draft efficiency and helping to prevent downdrafts. Quality constructed from heavy-duty 26 gauge stainless steel. This product does not include a built-in bird screen. We recommend using Loctite c5-a copper anti-seize on the rotating bracket and cleaning creosote buildup to ensure cap functions correctly and is able to rotate without issues, this should be done annually or else as needed.
The FAMCO WDCSS wind directional chimney cap is engineered to slip around the OD (outside diameter) of a single wall pipe. For double/triple wall pipe, we also offer our WCASS wind cap adapter which will fit inside an insulated, double or triple wall pipe to create a mount for your wind directional cap (sold separately).
The FAMCO WDCSS wind directional chimney cap comes in a range of diameters from 5 inch to 14 inch with heights ranging from 14½ inch to 27 inch, see our specs sheet for more details. The FAMCO WDCSS Wind Directional Chimney Cap is manufactured by FAMCO in the United States and comes with a 1-year warranty against product defects and workmanship. If you have any questions about this product, please refer to the FAQs above or feel free to contact us.
Putting a cap over insulated pipe could allow exhaust to feed back into the pipe liner and damage the pipe, because of this we would recommend you get an 8" adapter, which will slide into the pipe and comes with a protective collar to shield your outer pipe, and an 8" cap to mount to the adapter.