![]() ![]() You'll need to make some advance preparations, but once you've taken these steps, an insulation blower will help the process move along quickly. You can insulate your existing lath and plaster walls by using blown-in cellulose insulation, which eliminates the need for removing plaster from the walls. How do you insulate an old house lath and plaster wall? Many homeowners do this as part of remodeling projects, since the walls have to be ripped into anyway. It is possible to insulate lath and plaster walls. Can you insulate behind lath and plaster? These materials don't require the drywall in your home to be taken down. There are several types of injection foam available out there, including the RetroFoam product we use. If it is an interior wall why not just slap up some 3/8 drywall to secure the old plaster and build your new wall up against that. A 2x4 wall should suffice if no 3' stack is to be installed. Injection foam insulation is the answer to insulating walls without removing drywall. If its an outside wall you could just cover it with 1/2 or 1' foam insulation with reflective vapor barrier first. ![]() How do you insulate a house without removing plaster walls? Loose-fill cellulose or fiberglass insulation that has been blown into the walls is one of the main causes of exterior paint failure, termites, mold and structural damage in old houses. If your historic house has original plaster walls, you should not blow insulation into the exterior walls. They may also add cladding, another layer of insulation that sits between the blown-in insulation and the outer walls. All you need is a compressor, a rube with a tee, one end in a tube that goes into the wall say 1m long, one end is shot into with a air jet gun, the middle of the tee goes via a flexible clear hose into a bag of beads, Ventrui does the rest. To insulate your plaster walls, the contractor will blow or inject loose fill or foam insulation, and then install proper sealing and a water-resistant barrier. add the spray head to the end of the fill nozel. ![]()
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