How To Put Chimney Flashing On Metal Roof

Use your finger or a tool to smooth the silicone around.

How to put chimney flashing on metal roof.

A cricket is sloped like a tent roof to deflect water around the chimney. A do it yourself video detailing step by step how to flash a chimney with our metal roofing chimney kit. Then spread the plastic roofing cement along the base flashing sheet underside and simply place the flashing around the base of the chimney and over the shingles. Slide the rubber boot over the pipe to check the fit.

Secure a shingle over the corner flashing using a hammer and roofing nail. Trim the flashing in the center of the rubber boot with a roofing knife so it fits snugly around the pipe. After screwing it down securely do another bead of silicone around the edge also put some silicone on all the screws as well. Install two layers of butyl tape sealant under perimeter of pan flashing.

Cut the side cap flashing to fit the angle of the roof so it overlaps each lower cap flashing at least 2 in. Rivet the pan flashing to the sidewall flashing. Place the step flashing over the caulk and onto the chimney. Begin by applying masonry primer to the base of the chimney.

Using a compass draw out the chimney s diameter. Cut and fold pan flashing to fold up the back of the chimney and over the sidewall trim. Place a second piece of 8 inch 20 3 cm flashing against the chimney. Trace the outline of the base of the rubber boot onto the metal roof with a pencil.

Drill a small hole in this spot to mark the chimney s center. Pan flashing should extend at least 12 inches up the roof plane. Place the chimney where it would be related to the stove and mark the center of the chimney on the ceiling. Use your feet to flatten the flashing down over the contour of the roof.

A continuous sheet metal apron across the chimney s downslope face l shaped step flashing running up both sides and when the chimney sits below the roof ridge a cricket or saddle running across the upslope face. Base flashing has several components. Screw it down in a way that its fits tight over the humps of the metal roof. The roofing the cricket valley and the chimney base flashing all come together at the chimney corners and must overlap in the proper order.

Hammer 2 roofing nails into the flashing and roof. When the chimney penetrates the roof below the ridge use a cricket on the up slope side to divert water around the chimney. Bend a piece of cap flashing to fit around the top corner of the chimney and add the cap flashing across the back of the chimney. Apply sealant to sidewall flashing where pan flashing tabs will overlap.

Use mortar nails to secure the base flashing to the chimney. Pound the flashing into the grooves and fasten with the drive in expanding anchors.