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Old 04-05-2018, 08:28 PM   #41
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Emulsion paint. How much have you got to paint. Seal it first with PVA then paint it any colour you like. Brown is good for the top, white underneath, makes things easier to see.

The little match pots are quite good and cover quite a good area. You can mix them to make the colour you like.

Do you know anybody who might have some old emulsion paint.
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Old 04-05-2018, 10:08 PM   #42
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I have a 6'x4' peace plus a 2'x4' peace, I don't know anyone with old tins of paint.

Last edited by Squad; 04-05-2018 at 10:11 PM. Reason: Added more words
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Old 04-05-2018, 10:20 PM   #43
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You should ask around. Try the little test pots in that case or buy a tin of cheap paint.

There must be somebody who has paint left over.
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Old 06-05-2018, 03:42 PM   #44
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How long does PVA Glue a 50/50 mix take to dry?
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Old 06-05-2018, 03:53 PM   #45
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Depends on the surface and the temperature. 12 hours should do but I would wait 24.
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Old 06-05-2018, 04:04 PM   #46
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The surface is insulation board and put it on about 2 hours ago.
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Old 06-05-2018, 04:32 PM   #47
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Quote:
Originally Posted by minipix View Post
I've built my layout using insulation board, you might want to take a look at the photos on my blog (see signature link). I used 50/50 PVA and water all over to seal it, I think in two coats. Then I used acrylic paint on top of that, starting with brown and then going over with green (for grassy areas) or black (for roads). Looks really good so far. The green will eventually have scatter grass glued on top, and the track bed will at some point be ballasted.

So I'd definitely recommend that insulation board. It's easy to work with, and has a nice natural texture to it. It's not strong though, so you'd definitely need a supporting wooden structure underneath.

I would like to second that. The only thing I would say is that insulation board is not stocked by many DIY outlets. There used to be a shop in our town which supplied insulation board cut to size. I found it easy to use and the offcut bits you could break to make a mountainside. The method I used was to create a diorama on the insulation board and fit this to a sub baseboard made of ply.
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Old 06-05-2018, 07:35 PM   #48
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Quote:
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The surface is insulation board and put it on about 2 hours ago.
I know its insulation board weve been discussing it with you, I was referring to how much the surface absorbs the PVA. Leave it for 24 hours.
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Old 06-05-2018, 10:13 PM   #49
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I have done one side and it is more or less dry at 7pm and I painted it at about 2pm so I hope that it will be dry after I paint it tomorrow then I can paint it with emulsion.
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Old 19-05-2018, 03:55 AM   #50
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Quote:
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Does anyone know how to get rid of the smell from insulation board?
If it smells, it is probably damp, which means you've already got problems!

I used insulation board on a layout years ago and ended up ruining the layout because the stuff warped when applying PVA to ballast.

Obviously people have different views and opinions on this, but you cannot get away from the fact that insulation board is heavily influenced by damp/wet which means that you must not get any water-based materials anywhere near it. If you MUST use it, seal it with an oil-base paint, NOT a water-based paint.

The idea of sealing it with PVA has merit, but remember, PVA contains water (depending on what ratio you choose) which will cause insulation board to warp before the PVA sets, by which time, the damage is already set in.

Also remember: what is the point of using insulation board ? Most people say that it is a combination of cost and noise reduction. If you seal it with PVA, does not the soaked in PVA make the board go hard, defeating the noise reduction purpose ?

As someone else has already pointed out, the only material which works reliably is ply wood. Yes, it might be expensive, but you only build a layout once. If you don't get the foundations right, the building will never be successful and you'll soon want to build another one, spending out more money sooner than you would have done otherwise.

My 'Ashprington Road' layout uses ply wood with Dexion bracing. It was stored in a Sydney garage at one point for over a year, experiencing night time temperatures down to zero and daytime temperatures of over 40 degrees. It did not suffer any damage at all.

Graham Plowman
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