Unsealed chimney chase
This is the chimney chase in the attic. This gap is a major source of air leakage in this home.
The chimney chase has been air sealed
Our Team covered this chimney chase with our Fomax insulation board. Fomax has the flame retardant properties to satisfy building codes. We then air sealed around the Fomax to prevent any more air leakage.
The chimney is flashed
Next, the space between the wood framing and masonry was flashed with metal and sealed airtight with special high temperature fire caulk.
The chimney is insulated
Fireproof rock wool insulation panels are installed around the chimney. This forms a fireproof barrier between the chimney and blown in cellulose insulation.