8 Tips for Installing Chimney Surrounds on Your Chimney 8 Tips for Installing Chimney Surrounds on Your Chimney
Following these 8 tips for installing chimney surrounds on a chimney can cover up a stark utilitarian chimney pipe without the expense of brickwork. The installation requires some knowledge of roofing and a large selection of equipment. However, chimney surrounds can be customized.
1. Measure Chimney Pipe and Roof
To successfully install the chimney surround you need to know the height and width of your chimney pipe, as well as the pitch of your roof. Fortunately, some manufacturers offer extensions to the chimney surround for extra high chimney pipes. You will have to fit the chimney surround by cutting its panels to fit the specific installation.
2. Obtain Necessary Tools
The manufacturer may provide sealant or mounting brackets. However, you may also need a drill, saw, screwdriver, hammer, tin snips, brush, roof tar, screws, and roofing nails. You will also need a block of wood and a vise to bend the flashing. You will also need a ruler, level, and protractor for measurements. You will need a ladder to reach the roof.
3. Bend Flashing
Follow the manufacturer’s specifications for bending the flashing, most likely to 1 inch. A bending jig can be built by driving screws into a wooden board a certain distance from its edge. Lock the board in a vise on a workbench and bend the flashing against it.
4. Cut Surrounds to Roof and Pipe
Most surrounds are made for a roof with a 4:12 pitch. If your roof has a different pitch you can cut the surround to fit it. Most surrounds are made with 22 gauge steel so you will need a heavy set of metal shears. You may also need to cut the panels at the other end to fit the height of the chimney pipe.
5. Cut Cap to Pipe
Before climbing the roof, cut a hole the diameter of your chimney pipe through the center of the cap or lid provided with the chimney surround. This will slide over the pipe once you have attached the side panels to the mounting brackets.
6. Seal Brackets and Nails When Installing Flashing
Seal under the strips of flashing with roofing tar before nailing them into place. Also seal anywhere that you penetrate the roof to screw in the mounting brackets by brushing the tar over the heads of the screws.
7. Lay out Chimney Surround
Follow all instructions provided by the manufacturer. Fasten the mounting brackets to the frame of the roof around your chimney pipe with screws or bolts. Screw the flashing to the outside edge of the brackets. Assemble the chimney surround panels and drop them on the outside edges of the mounting brackets as well.
8. Reinstall Round Chimney Cap
If you already had a spark arrestor or draft-modulating chimney cap installed, slide it onto the chimney pipe above the top lid of the surround panels. Make sure to leave room for this cap during the design process.