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How to Seal Gaps and Cracks in a Home- DIY Weatherization Solutions from Green Dream Group

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Uploaded by on Jan 9, 2009

A quick tutorial on sealing exposed ductwork with mastic and aluminum tape.

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Howto & Style

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Standard YouTube License

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  • These videos are great! A few points though:

    - A utility knife is better for cutting the tube than the built in cutter- you can also cut the tube at an angle

    - A finger works well to smooth the bead, but I would wear disposable gloves

    - Siliconized acrylic latex will work better than pure latex. After use, seal the caulk tube with a nail and some tape, so it will last longer before drying up

    - If you do a lot of caulking, you can get a much better drip-free caulk gun. Check amazon.

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