Expanding foam is much easier to remove from brick and masonry (and from anything else, for that matter) if you’re able to get to it before it sets. Remove expanding foam immediately from areas you do not want it. The supplier is a firm in Andover, Hampshire, and is called, AB Sealants Ltd., and they supply the product via mail order. There are various tools available to remove wall foam insulation. Pour acetone onto old rags and wipe off excess expanding foam residue the cardboard pieces did not get. Any tips gratefully received Posted 8 years ago Be careful, though; you want to dampen the area, not wet it. Once it’s hardened, spray foam is incredibly durable. 24th Jul 2008, 06:27 PM #2. chuth77. Removing expansion foam from brickwork. Expanding polyurethane foam sealant requires moisture to expand and cure. Lacquer thinner is very effective in removing cured wall foam insulation. Expanding foam is applicable in many aspects of do-it-yourself home improvement, from fixing cracks in walls to insulation. Here is a product specifically intended for removing hardened expanding foam, and it's safe for use on PVC. then try everything in your house, like alcohol, nailpolish remover, vinegar, etc. Apply Thinners. My bathroom fitter got that expanding foam on my new acrylic bath. Use small pieces of cardboard to scrape off excess foam, throwing them away immediately to avoid getting foam elsewhere as it expands. Remove as much of the foam as possible with the cloth. Foam sealant won't stick well to a wet surface. ... if you find something that dissolves the test foam, then use it on a hidden part of the cabinet – jsotola Feb 7 '18 at 17:10 It's imperative that you read the user manual carefully before using these tools. Senior Member Join Date May 2008 Location Brisbane Age 43 Posts 219. ... then try everything that you have in your garage, like paint thinners, etc. Besides foam saws, there are special knives with handles that are made to carefully remove it. Rub the affected part of the clothing with the nail polish remover. Apply stain remover to the spot you have treated with nail polish remover. 8. Any tips apart from acid, I've been out there picking it off and I'm losing the will to live, please any useful tips gratefully received. I didn't notice it straight away, and now, one year later I still haven't found a way of removing it completely, without scratching the bath. If you're applying foam to dry wood or other dry surfaces, or working on a day with little humidity, misting the area first will help the foam expand and cure faster. This should get the remaining foam out of the garment. Put nail polish remover with acetone on a second cloth. 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