Sealing deck penetrations

Enable JavaScript to get the best experience.

Search Subscribed Topics Active Topics

Created by

Yara > 9 months ago, 10 Nov 2020

Yara

NSW

1314 posts

10 Nov 2020 5:33pm

Drilling bolt holes through the deck I have always used silicone sealant. Nowadays it seems there are better solutions like butyl mastic. What do the brains trust recommend?

jbarnes85

VIC

297 posts

10 Nov 2020 8:50pm

Oh my don't mention silicone around here....

im a big fan of butyl tape. Not the butyl mastic in the tube which is too soft . I buy it online from the boat warehouse for about $25

r13

NSW

1714 posts

10 Nov 2020 9:12pm

I use this now for all above water situations - not underwater.

soudal.com.au/trexsmx/crystal/

UncleBob

NSW

1301 posts

11 Nov 2020 8:16am

Select to expand quote

r13 said..
I use this now for all above water situations - not underwater.

soudal.com.au/trexsmx/crystal/

My experience with trex sealant has been that long term it is not uv safe and ultimately degrades.
I now use simpsons or fixtech.

Ramona

NSW

7737 posts

11 Nov 2020 8:22am

Select to expand quote

Yara said..
Drilling bolt holes through the deck I have always used silicone sealant. Nowadays it seems there are better solutions like butyl mastic. What do the brains trust recommend?

Silicone is good for engine gaskets and fish tanks. That Soudal stuff r13 uses looks interesting. Some of the Selleys equivalents are worth a look too.

Sydney88

NSW

108 posts

11 Nov 2020 11:50am

I've been redoing a few of my deck penetrations and have been following this guide to seal with epoxy then butyl tape. marinehowto.com/sealing-deck-penetrations-to-prevent-core-rot/

BlueMoon

866 posts

11 Nov 2020 9:05am

Select to expand quote

UncleBob said..

r13 said..
I use this now for all above water situations - not underwater.

soudal.com.au/trexsmx/crystal/

My experience with trex sealant has been that long term it is not uv safe and ultimately degrades.
I now use simpsons or fixtech.

That is interesting UncleBob, are you talking clear or grey or both. I've been using T-Rex often at work, but only grey as clear in any sealant won't stand up to UV.

UncleBob

NSW

1301 posts

11 Nov 2020 2:07pm

Select to expand quote

BlueMoon said..

UncleBob said..

r13 said..
I use this now for all above water situations - not underwater.

soudal.com.au/trexsmx/crystal/

My experience with trex sealant has been that long term it is not uv safe and ultimately degrades.
I now use simpsons or fixtech.

That is interesting UncleBob, are you talking clear or grey or both. I've been using T-Rex often at work, but only grey as clear in any sealant won't stand up to UV.

The product was white, I even rang the supplier to ask about UV performance, the response was that they had no complaints and it was fine.
Yeah, right.

r13

NSW

1714 posts

11 Nov 2020 6:17pm

Select to expand quote

BlueMoon said..

UncleBob said..

r13 said..
I use this now for all above water situations - not underwater.

soudal.com.au/trexsmx/crystal/

My experience with trex sealant has been that long term it is not uv safe and ultimately degrades.
I now use simpsons or fixtech.

That is interesting UncleBob, are you talking clear or grey or both. I've been using T-Rex often at work, but only grey as clear in any sealant won't stand up to UV.

Thanks, never heard of Simpsons but it looks good. Is it available in clear or white? I could only find this;

metalbythemetre.com.au/product/bostik-simpson-marine-construction-adhesive-300g-cartridge-black/

Am also using Fixtech Clear.

www.fixtech.com.au/process/catalogue/itemView.html?itemId=3125&categoryId=571

UncleBob

NSW

1301 posts

11 Nov 2020 7:38pm

Select to expand quote

r13 said..

BlueMoon said..

UncleBob said..

r13 said..
I use this now for all above water situations - not underwater.

soudal.com.au/trexsmx/crystal/

My experience with trex sealant has been that long term it is not uv safe and ultimately degrades.
I now use simpsons or fixtech.

That is interesting UncleBob, are you talking clear or grey or both. I've been using T-Rex often at work, but only grey as clear in any sealant won't stand up to UV.

Hi, I usually use white, sometimes black, job dependant. Don't know if clear is available from them or not. Do know that white stays white, even after years of exposure on the deck.

Butyl tape: works 100% of the time, no sticky mess to clean up, doesn't go off, one decent roll will cost the equivalent of a couple of tubes of goo but will last you for years and years.

Cheers, Graeme

r13

NSW

1714 posts

11 Nov 2020 8:43pm

Select to expand quote

UncleBob said..

r13 said..

BlueMoon said..

UncleBob said..

r13 said..
I use this now for all above water situations - not underwater.

soudal.com.au/trexsmx/crystal/

My experience with trex sealant has been that long term it is not uv safe and ultimately degrades.
I now use simpsons or fixtech.

That is interesting UncleBob, are you talking clear or grey or both. I've been using T-Rex often at work, but only grey as clear in any sealant won't stand up to UV.

Hi, I usually use white, sometimes black, job dependant. Don't know if clear is available from them or not. Do know that white stays white, even after years of exposure on the deck.

Ok got it, will get some, great thanks.

metalbythemetre.com.au/product/bostik-simpson-marine-construction-adhesive-300g-cartridge-white/

End of posts

Please Register, or first...

Topics Reply