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Expansion on a 10mm foamalux board

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Post Mon Feb 25, 2019 2:49 pm

Expansion on a 10mm foamalux board

Hi All

How much play is there on a 10mm foamalux board when fitting externally?

I need to fit quite a few signs externally and they want a nice thick black edge, I suggested 10mm foamulux which would give the finish, I'm just not sure how long it will last when using stand-offs in each corner and across the long edge. The size is roughly A0.

Thanks
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Post Tue Feb 26, 2019 10:25 am

Re: Expansion on a 10mm foamalux board

how about a composite with some kind of trim? black foamex will absorb a lot of heat, the edges may well fade quite quickly too.

just thinking out loud!
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Post Tue Feb 26, 2019 10:44 am

Re: Expansion on a 10mm foamalux board

I wouldn't chance it. The boards will almost certainly warp particularly when black as they will abosrb all the heat in the sunshine. Do it using folded trays made from aluminium composite that way you wont have any issues and the boards wont fade either
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Post Tue Feb 26, 2019 11:36 am

Re: Expansion on a 10mm foamalux board

If you do go with the black make sure you make the holes as big as possible and dont tighten up the stand offs tight. It will give you a little bit of play when it is expanding/contracting
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Post Wed Feb 27, 2019 9:32 pm

Re: Expansion on a 10mm foamalux board

Hi all, thanks for the replies, sorry not got back to you sooner. Jean I thought about making the holes bigger, I also thought about making a frame to go on the back which would.make the board float, thought this would help.

I also thought about composite but I think it's gonna take too much time to bend the corners. I like the idea of a trim/frame but can't find anything other than the type you would use on an industrial unit
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Post Sat Mar 02, 2019 11:45 am

Re: Expansion on a 10mm foamalux board

I second Phill’s recommendation, black foam will suck the heat in, much safer to use composite trays. You’ll save time on the installation as well I reckon

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