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Old 18-01-2019, 02:41   #1
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aluminium ( or stainless steel ) skin over fibreglass deck

Hello all

I have a solid fuel stove in a GRP boat ( please no debate on that! ) and around the flue exit area I wanted to look at options to:
  1. Protect the deck from heat damage ( little embers etc )
  2. Obviously have extra fire protection
  3. Make this area easier to clean

Many modern GRP fishing boats around us have skinned parts of their boats with metal, for them its to protect areas that get heavy abuse. I wondered if anyone has glued ( or other method ) any metal skins onto their GRP decks?

If so, what metals & what methods to attach. Are there problems with moisture, rust, expansion etc?

Anyway, thanks for any ideas & help.
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Old 18-01-2019, 03:40   #2
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Re: aluminium ( or stainless steel ) skin over fibreglass deck

I ran a diving rib with a piece of checker plate at the stern for some years. It withstood foot traffic, dive cylinders and weights etc well. Held down with sealant and screws at the corners.

Some of the aluminiums are more resistant to corrosion than others. I had an A frame made in 2" ali pipe and the firm were careful to select one of the more resistant types to make it from, so worth a bit of an investigation.

Could the checker plate get hot? how about a cork tile between the checker plate and the deck?

Pete
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Old 18-01-2019, 03:49   #3
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Re: aluminium ( or stainless steel ) skin over fibreglass deck

Thanks Pete, great help. It will never get that hot, just tiny embers every now & then.
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Old 18-01-2019, 05:58   #4
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Re: aluminium ( or stainless steel ) skin over fibreglass deck

I found this https://www.boatdesign.net/threads/m...ss-boat.24880/
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Old 18-01-2019, 06:08   #5
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Re: aluminium ( or stainless steel ) skin over fibreglass deck

Concerns about expansion here: https://forum.solar-electric.com/dis...iberglass-roof

These guys recommend a glue: https://www.offshoreonly.com/forums/...iberglass.html
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Old 18-01-2019, 06:16   #6
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Re: aluminium ( or stainless steel ) skin over fibreglass deck

Quote:
Originally Posted by mtompson View Post
Concerns about expansion here:
In the UK?

If its cold enough outside to light a fire, then a sheet of ali isn't going to get that hot surely.

Cold fingers riding the Suzi to work this morning.

Pete
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Old 18-01-2019, 06:29   #7
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Re: aluminium ( or stainless steel ) skin over fibreglass deck

true, but I want to head south eventually! (especially this time of year! )
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Old 18-01-2019, 10:06   #8
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Re: aluminium ( or stainless steel ) skin over fibreglass deck

Unfinished Aluminum can/will get very hot in the sun of the tropics. If you are heading south, I'd look into painting it white or ask some AL boat owners for advice as I'm no expert.
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Old 19-01-2019, 20:52   #9
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Re: aluminium ( or stainless steel ) skin over fibreglass deck

For many years we sailed an H-28 with a wood stove heater forward. A metal (aluminum?) ring with a gutter that could be filled with water helped dissipate the heat from the chimney and kept the wood & painted canvas cabin top from getting scorched.
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