2008年3月3日 · Does anyone know of a good substance to use as a seam compound below the waterline that comes in a tube and can be applied with a caulking gun? I see that 3M 101 says it's for use above and below the waterline.

Sealing that raw wood with multiple coats – at least three – of Smith’s Clear penetrating Epoxy Sealer (CPES) is an absolute must. Doing so reduces the wood’s ability to absorb water dramatically. We have seen and anguished over way too many bottoms where 3M5200 was forced into the plank seams in a misguided attempt at caulking them.

I am opening seams that are up to 3/16” wide, which is at the outer limit of what it can bridge effectively, but we will use Interlux Seam Sealer for below-waterline applications. It cures, holds paint, and makes a watertight seal, but, even when cured, it never becomes hard.

2019年11月4日 · As far as I know, common practice is that the transverse weld joints (or butt joints) are arranged staggered, and longitudinal seam lines run...

2008年7月7日 · I also have some seam sealer, can't think of the name but it's an interlux brand, red in color and made for below the water line. Can I use this or should I use something different for above the water line.

2008年3月5日 · Oil based seam compounds are the right stuff for lightly built boats. Linseed oil will loosen most commonly available compounds without substantially altering their makeup. Just a bit goes a long way.

Seam & Any Residue. Getting a clean seam for a fresh caulking job means getting rid of anything that might get in the way. Boating Magazine recommends “reefing” the seam first, which means removing existing beads of caulk with a reefing tool or hook. Once removed, you should also consider using a solvent like Life-Calk®

2020年8月16日 · I have an O'Day Javelin, 14 ft daysailer, hull is made of fiberglass, and the fiberglass deck piece joins the hull at the sheer line. These two pieces each have a horizontal flange, about 3/4 inches wide, all around the sheer line, …

2019年4月15日 · I have a 15 foot aluminum boat with leaking keel seams under the bow shelf, below the waterline. What would be the best sealant to use to seal these seams and around the keel mounting nuts, from inside the hull of the boat, per photos?

A proper caulking job will keep a boat well-protected and sealed. Here's a quick and easy guide to caulking boat seams the right way.