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Blue foam sheets for use as a baseboard - Baseboards. - Getting You Started. - Your Model Railway Club
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 Posted: Sun Oct 31st, 2010 07:43 am
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Avrojet
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Hi

Has anybody used Blue foam insulation sheets as sold in B&Q? and

is this suitable for use as a base board?

Thanks

Mark Griffiths

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 Posted: Sun Oct 31st, 2010 08:29 am
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Gwent Rail
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Hi Mark,
I'm currently using the white insulation foam that can be bought from building supplies merchants and I assume the stuff you are asking about is similar.
Not suitable for the base layer of a board, mine is stuck onto Plywood, which is braced underneath with softwood. The reason I'm using it is to facilitate scenic construction, particularly forming a tidal inlet below track level.

Wayne Williams is using a denser material (which happens to be blue) See it described in his layout thread here:- 

http://yourmodelrailway.net/view_topic.php?id=509&forum_id=21

or PM him for further information.

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 Posted: Sun Oct 31st, 2010 04:00 pm
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bickybtrains
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I would not use blue foam insulation board  for a baseboard.  We built a layout for our club and it shrunk!  I will use it for insulation behind vinyl siding, although on one particular job where we had to remove some siding from the insulation it had shrunk. so I now know that it is not a good material for something like a baseboard.  I still use it for forming contours for my scenery.

William

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 Posted: Sun Oct 31st, 2010 05:23 pm
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Avrojet
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Hi

thanks for the info!

regards

Mark

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 Posted: Mon Nov 1st, 2010 07:31 am
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Wayne Williams
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Mark,
Blue foam (Styrofoam) at any thickness would not be sufficient for baseboards. HOWEVER, if you were to laminated with a contact cement, a thin wood skin like luan (5/32" thick) to both sides of say 1 1/2" foam, it would be extremely rigid, and would in my opinion work very well and be very light in weight.

Please know this, I have never tried it. Sometimes things look great but some kind of hidden issue pops up that shouldn't have.

I have built in my prior working life a 50 long mobile home with the walls and floor of a laminated construction. I had a lot of naysayers but it proved them all wrong. It worked beautifully. Granted that was a thicker laminate than you are looking for, but this just points out that the technology worked perfect.

If you chose to do something like this, PM me and I can give you more advice.

Wayne



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 Posted: Mon Nov 1st, 2010 11:09 am
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Avrojet
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Hi

A big thank you to all that answered my query, I found it a great help.

Regards

Mark

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 Posted: Mon Mar 3rd, 2014 05:29 pm
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BCDR
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Hi Mark,

I wouldn't recommend it for a baseboard. It needs a support frame, it shrinks and warps, it will continue to out-gas styrene monomer for months, and it dents easily. By the time you've built a frame you might as well but a wood-based top on. Plus which putting point motors in (Cobalts, etc.) requires a wooden support anyway. Something that is never addressed is flammability. Burning polystyrene gives off some really nasty products.

Nigel

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 Posted: Mon Mar 3rd, 2014 06:01 pm
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Spurno
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Hi Nigel,Mark is a former member and won't see your post.Nothing wrong with your post itself though as it will still help current members.



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