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Expandafoam or Plaster of Paris

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Chase

New Member
Hey people, I'm after some advice, I'm going to make some backgrounds for my enclosures and wonder what would be best out of these two, expandafoam or plaster of paris. Also what sealant would I use to keep moisture out. Any help would be good thanks.
 

pinefamily

Very Well-Known Member
There are two brands of pond sealer, can't remember the name of the other one. Either is fine over nearly any surface, just follow the instructions. Why not use polystyrene and make a 3d background? Then apply a coat of render, then the pond sealer.
 

Chase

New Member
Thanks pinefamily, I am struggling to find a local shop to get Styrofoam from, the places I have found searching the net are quite expensive. Any ideas where I can get cheap foam from would be much appreciated. Thanks
 

Native_EWD

Active Member
Considered doing some dumpster diving? Lol white goods stores bins are usually full of it, I've found a lot from job sites where houses are being built. Can always go Clark rubber, But it won't be cheap. Expanda foam in a can goes pretty good too.
 

pharskie

Well-Known Member
Your local Harvey Norman has styrofoam on hand pretty regularly. That or see if you can find a buisness that sells comercial printers. They can't get rid of it quick enough
 

MrVic

Active Member
Expandfoam would be the easiest solution. At around $7 a can from Bunnings a couple of cans would go a long way. Spray on, use a damp rubber glove to mould it as it stops expanding, use different thicknesses to create a rocky ledge, make it look like the side of a cliff, embed some branches and rocks in position by using the foam to lock them in place, paint, seal, sit back and enjoy your creativity ;)
 

abrehaut

Not so new Member
Dumpsters for Styrofoam is the way to go. I'm in the middle of making my second wall. Just finished the first coat of grout.
Will do another then spray it acrylic black before waterproofing.
 

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squidlinc

Not so new Member
Just a warning - plaster of paris is will be much, much heavier than expandafoam in my experience. I think expandafoam would be much easier to apply and carve too.
 

apprenticegnome

Active Member
I buy buy styrofoam from an insulation supplier. They carry different thickness, foam through to rubber etc and have been fairly priced in my opinion.
 
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