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Old 01-02-2010, 06:26 PM   #1
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Best caulk for plastic


Can someone tell me if regular 100% silicone will burn through 6 mil plastic ? Im wanting to create a seal between two pieces of plastic and Ive heard that silicone can melt away that rigid foam board material but wasnt sure about the black 6 mil plastic.
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Old 01-02-2010, 06:38 PM   #2
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Silicone will not melt or stick to plastic. You need to use acoustical sealant to stick plastic.
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Old 01-02-2010, 10:34 PM   #3
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Thanks joed. I really would like to apply something between two pieces of plastic in addition to some sealing tape. I currently have some caulk that is specifically designed for adhering foam board to other surfaces. It sounds like acoustical sealant will do the trick for the plastic.
I forgot to mention that my goal is to try and eliminate the flow of moisture and/or air between the two plastics.

Last edited by Mudball; 01-02-2010 at 10:38 PM.
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