Forum Discussion
HMS_Beagle
Jan 09, 2022Explorer
Fulltimers wrote:
My RV manufacturer used pure silicone on all joints 19 years ago and it has never failed. I have resealed items I have replaced with 100% silicone and have never had a problem. I do the painters tape deal and it looks perfect.
You should be playing the lottery with that luck.
My experience is different than yours. My 14 year old camper was sealed with silicone, effectively 100% of that sealant has failed. I have owned 5 largish RVs (3 Bigfeet, one Airstream, one Safari), all had at least some silicone used, with nearly complete failure. In the yachting industry silicone is rarely used to seal any deck fittings, and only on the cheapest of products. 3M and Sika are perhaps the most used sealant brands, both make silicone and polyurethane sealants, and both recommend polyurethane for this use. For critical applications (like boat underwater fittings) both specifically recommend NOT using silicone.
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