Duct seal

[pmagistro]

Does anyone have experience using this product on a boat? I got a piece of it from someone in the yard and it seems very similar to the putty used in my hull - deck joint and binds well to butyl tape. I am considering using it as a component of my hull - deck joint repair. Thoughts?

https://www.homedepot.com/p/Gardner-...-110/100212441

[Orion Jim]

According to the manufacturer "not for use outdoors".
Duct Seal Compound - 1 lb Pugs | Gardner Bender

I would personally use 4200 or 5200.

[Diesel Bill]

Originally Posted by pmagistro

Does anyone have experience using this product on a boat? I got a piece of it from someone in the yard and it seems very similar to the putty used in my hull - deck joint and binds well to butyl tape. I am considering using it as a component of my hull - deck joint repair. Thoughts?

https://www.homedepot.com/p/Gardner-...-110/100212441

We used this product on the steam ships to seal the casings and doors on the boilers. It works great for that purpose, I would not rely on it aboard my boats.
It tends to dry out and crumble.

[pmagistro]

Originally Posted by Orion Jim

According to the manufacturer "not for use outdoors".
Duct Seal Compound - 1 lb Pugs | Gardner Bender

I would personally use 4200 or 5200.

I bought some Rectorseal 81880. Specified for outdoor use. I am not going to use 5200; I believe that a flexible compound is important in this joint. Considering Dolfinite as the alternative. Cost is different but isn't a huge issue for e here ($40/pint for Dolfinite vs. $10/lb on Rectorseal). I am mostly concerned with using the best product.