Sealing deck penetrations

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5 years ago

General

Yara

NSW

1322 posts

Yara

NSW, 1322 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

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

1720 posts

r13

NSW, 1720 posts

10 Nov 2020 9:12pm

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

soudal.com.au/trexsmx/crystal/

slammin

QLD

998 posts

slammin

QLD, 998 posts

11 Nov 2020 5:39am

Fix-tech.

UncleBob

NSW

1311 posts

UncleBob

NSW, 1311 posts

11 Nov 2020 8:16am

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

7756 posts

Ramona

NSW, 7756 posts

11 Nov 2020 8:22am

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

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

BlueMoon

866 posts

11 Nov 2020 9:05am

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

1311 posts

UncleBob

NSW, 1311 posts

11 Nov 2020 2:07pm

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

1720 posts

r13

NSW, 1720 posts

11 Nov 2020 6:17pm

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

1311 posts

UncleBob

NSW, 1311 posts

11 Nov 2020 7:38pm

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.

wongaga

VIC

663 posts

wongaga

VIC, 663 posts

11 Nov 2020 7:54pm

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

1720 posts

r13

NSW, 1720 posts

11 Nov 2020 8:43pm

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/

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