How to Install Wood Stove Chimney Flashing
To prevent water from leaking around a chimney, it is essential to install flashing. Chimney flashing is installed between roofing shingles and over the chimney's ice and water barrier. You should install flashing along with a chimney saddle, a sloping structure located behind the chimney to promote water runoff. With the correct tools and materials, you can install wood stove chimney flashing on your own. Does this Spark an idea?
Other People Are Reading
Things You'll Need
- Chimney saddle
- Metal snips
- Grinder or circular saw
- Gloves
- Safety glasses
- Dust mask
- Roofing nails
- 1 1/2-inch brick nails
- Expanding plastic nail caps
- Silicone caulk
Instructions
-
-
1
Cut a length of pre-bent base flashing for the front of the chimney with metal snips. Cut the ends of the top half at a 45-degree angle. Bend the cut corners around the side of the chimney. Affix this flashing with galvanized shingling nails. Place nails at the front edge of the flashing.
-
2
Cut lengths of pre-bent 8-inch square step flashing so that it will fit around the corners and go 1 1/2 inches along the sides of the chimney. Place a dollop of caulk at the exposed part of the chimney's corners, and nail the flashing. Nail a shingle over these sections. Continue cutting and affixing equal lengths of step flashing covered by shingles until you get to the top corners of the chimney.
-
-
3
Attach the chimney saddle to the back of the chimney by nailing it along the edge. The sides of the chimney saddle will wrap around the corners and overlap the step flashing on the sides.
-
4
Saw 1-inch deep grooves in the grout lines of the chimney to insert the top lip of the cap flashing into. Measure the flashing to determine which grout line to cut into. Use a grinder or circular hand saw with a diamond blade. Wear safety glasses and a dust mask.
-
5
Cut front cap flashing at a length 8 inches wider than the chimney. Place the flashing at the front of the chimney, and bend the sides to wrap around the corners. Insert the lip into the groove. Use a block of wood to hammer it in.
-
6
Affix the side flaps of the front cap flashing to the chimney. Drill pilot holes through the flashing into the chimney. Secure the flashing with 1 1/2 inch nails and plastic anchors.
-
7
Cut the side cap flashing sections. Cut the bottoms at an angle that matches the pitch of the roof. This side flashing should overlap the side flaps of the front cap. Insert the lips into the cut grooves. Nail the flashing to the chimney with 1 1/2 inch nails and plastic anchors.
-
8
Cut the back cap flashing. This piece should wrap around and overlap the side flashing by at least 2 inches. Insert the lips into the cut groove. Nail the flashing to the chimney with 1 1/2 inch nails and plastic anchors.
-
9
Caulk along the grooves where the lips of the flashing were inserted to seal the flashing.
-
1
