Building A Wood Chimney Chase

Make the chase enclosure airtight chimneys built on an outside wall whether exposed or boxed with a chase are prone to backdrafting.

Building a wood chimney chase.

Typically uses 2x4 structural members sheathed with osb or plywood exterior. Now that the frame has been completed guess who gets to clean up all that mess. For chimney chases built into gable walls we install a partial diverter see image 2 again extending the sloped surface several inches beyond the corner see image 3. Called kickouts these keep water from running behind the cladding below and into the wall assembly see images 1 2.

Framing the chimney chase. Nfpa 211 reduces fire hazards by ensuring the safe removal of flue gases the proper installation of solid fuel burning appliances and the correct construction and installation of chimneys fireplaces and venting systems. Chimney chase a fireplace chase is essentially a knock out area of structure that hides a metal fireplace or cement blocks in a fireplace. Common specifications construction details for a wood framed chimney chase dimensions for a wood framed chimney chase may be as small as 24 deep x 36 wide but are more typically 3ft x 5ft x.

One solution is to install an insulated and sealed chase and to vent it to the interior so warm air can circulate. Build chase of fireplace just like any other wall structure by placing its uprights between plates and top plates to create a large box.