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| 1. The existing vent was placed in an ideal central location on the roof. So for this project we decided to remove it rather than cut another hole for the new higher-flow solar-powered unit. | 2. Use a flat blade to lift the perimeter shingles and ease the vent up as you continue to remove the nails securing the flashing. The less damage you do to the shingles, the easier your job will be. | 3. The Solar Star vent requires a 14" diameter hole. Centre the unit’s flashing over the existing hole and trace with chalk to mark a cutting line around the inside edge of the flashing. |
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| 4. Carefully cut through the shingle layers until you expose the roof sheathing underneath. You may need to make more than one pass on roofs with multiple shingle layers. | 5. Use a reciprocating saw to cut through the roof sheathing—careful not to damage the framing underneath. If a joist goes across the hole, don’t worry, it won’t hurt air circulation. | 6. Test-fit the flashing over the hole and trim the shingles and sheathing as required. The shingles should be loose enough to allow the flashing to easily slide over the new hole. |
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| 7. Before securing the flashing to the roof, attach the solar panel and fan to the flashing. The screws that attach them together would be difficult to reach once the flashing is on the roof. | 8. Slide the flashing under the surrounding shingles. The upper half of the flashing goes underneath the shingles and the lower on top. Once in place, secure it with screws. | 9. Use roof repair caulking to secure the shingles and cover the exposed flashing screws on the lower portion of the flashing (inset). The white caulking will dry clear. |
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