Carpet glue

[Kelly Leister]

Why do you have to remove the old glue?

 

[RMClark]

You probably don't HAVE to, but adhesives usually don't bond well with old adhesives. For best long term performance, the old adhesive should be removed.

Also...old adhesive buildup will telegraph through the material being put down on top of it.

 

[Chris1956]

Gee, scrape off any build up.

 

[Kelly Leister]

Gee, scrape off any build up.

Thanks, should I paint the bottom of the hull with flex seal? I am going to use the two part foam.

 

[Scott Danforth]

Thanks, should I paint the bottom of the hull with flex seal?

NO

use fiberglass and resin, or paint with an oil based paint

flex seal will break down in the sun and the carpet glue will have a reaction with it.

 

[JASinIL2006]

I don't think you'll want to use fiberglass cloth and resin on the hull of an aluminum boat...

When you ask about painting the 'bottom' of the boat with flexseal, are you referring to the outside of the hull (i.e., the part that will be in the water)? What are you trying to accomplish by painting it? Fixing leaks? Cosmetic improvement?

It would help if you could be a bit more descriptive about what you're asking.

 

[Kelly Leister]

Seal for any small leaks going to seal the inside of the hull (not water side) what about gluvit epoxy?

 

[Scott Danforth]

gluvit epoxy?

gluvit is the correct material

 

[Kelly Leister]

Thanks. Some of the foam on the bottom of the hull was hard and heavy and wet, can you fill some of the hull with the cut foam to reduce the amount of 2 part foam? What is better 1/2 inch or 3/4 inch for the deck, I will be using marine grade plywood even if who ever did this last didn't.

 

[Chris1956]

usually 1/2 plywood is all you need. I would recommend you seal all the plywood surfaces with spar urethane or at least marine varnish. Polyester resin is better than both of those, but you may not have it around.

 

[JASinIL2006]

Seal for any small leaks going to seal the inside of the hull (not water side) what about gluvit epoxy?

Gluvit works well, but if you have any Gluvit-treated areas that extend beyond the deck and are exposed to sunlight, be sure to cover it with paint. Gluvit and other epoxies generally don't hand UV exposure well.

For sealing your deck boards, I'd use either epoxy or something that penetrates like Old Timer's Wood Sealer (see below for formula supplied by forum legend @Woodonglass ). I'm not a big fan of using polyester resin by itself because it's very brittle when cured and it tends to crack as wood flexes; polyester really needs fiberglass to give it some strength to resist cracking.

 

[Kelly Leister]

Thanks for all the help everyone

 

[Chris1956]

Unfortunately epoxy resin does not do well in the sun.

 

[Davetowz]

I like a wire cup on a grinder to remove old adhesive before putting down new adhesive.