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Old 05-03-2010, 07:36 PM   #1
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Vinyl Surface Mounting Block For Siding

I'll be installing a simple exhaust system for cigar smoke in a room being finished in the basement. Will be using 6" duct. Does anyone know where I can get a vinyl siding mounting block like the picture below that accommodates a 6" duct pipe?


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Old 05-04-2010, 08:46 PM   #2
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Old 05-05-2010, 07:40 PM   #3
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If your question was where to get the contoured gasket that fits between the vent flange and the angled siding, you can fab. one using caulk or spray foam if you cannot find one contoured like your siding. It is best to use masking tape onto the siding across the top and down both sides of the vent and on the face edges of the vent. After the vent is mounted and secured to the siding, caulk the gaps with a matching color latex caulk. Smooth the perimeter of the vent caulked edges with a wet finger until you are satisfied with the look. After the caulk has firmed up, gently peal the tape up to reveal a crisp edge border around the vent edges. The more you mess with it at this stage the worse it will get. Without the tape, the edges will be uneven and feathered like all the novice nasty bathtub caulk jobs you see everywhere. If you use spray foam, tape a wider masked frame area and the face edges of the vent. After the foam has set, use a razor blade to trim off all of bulges and warts. The tape keeps the foam from staining the siding and the vent face and leaves a crisp edge. The foam leaves permanant stains on most materials and skin. The foam will darken to a baby poop color from sun exposure if not painted.
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Old 10-20-2014, 05:22 PM   #4
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Any Lowes, siding supply, Home Depot has them, there right there in the siding area.
Masking tape, foam. and all that other misinformation is not needed.
I never use the ones that have to match the type of siding you have.
What's the chances where you need that vent is going to be exactly where the lap is.
Use the one that gets nailed to the wall.
When posting in forums, letting us know your location will help others give better feedback/advice/solutions to your questions
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