Best bedding compound

[Dad Joke]

I like Sikaflex 291 better than 4200. My question is, how difficult is it to remove 291 when it comes time to re-bed? Thanks.

[tonyiiiafl]

Was just going to ask that. I am replacing the opening porthole oval windows at the bow of my 390 with fixed portholes. Non opening. What would you use?

[Hold'n On II]

Allot depends on how much material is between the surfaces being bonded. The more compound there is the better the chance of the compound tearing/separating when trying to pry them apart, but it's also more elastic, which requires more force, or cutting to separate. If the compound is thin and the adhesion strong, there's a chance it'll pull gel coat off with it. Most all of the advanced compounds these days have pretty substantial adhesion. It's the UV and durability that makes the difference.

I've found that an oscillating plunge tool with a scraper blade will make quick work of most anything Sealant/Adhesive related, provided you can get the tool into the area your working on. Once the surfaces are separated, I use a razor blade and an appropriate solvent to remove whatever is left.

I used Sikaflex 295UV when I re-bed the port side salon window on our '96 370 Voyager and will be re-bedding the starboard side this spring.