![]() ![]() As such, this results in reduced thermal insulation. Note: Thermal bridging occurs when one area of the wall or building has a much higher heat transfer when compared to any of its surrounding materials.Doing this is highly recommended so that when you use the spray foam into the cavity wall, the insulation gets behind the studs preventing thermal bridging. You would need to fur out the studs about a quarter to half an inch. If this is your case, using spray foam insulation options would work before putting the drywall in place. In many cases, homeowners use put drywall over concrete block walls. The foam will fill up every space in the wall, including the crevices that remain when the walls get mortared together. This foam will then fill up the cavities and spaces left during assembly. The idea is to drill holes into your existing concrete block walls (the middle of the wall) then inject the foam into that hole. Injection foam does a very good job of filling up those spaces since this foam can easily get to the nooks and crannies as it pushes into the core and creates an air seal that is excellent at preventing air movement. It’s these openings that allow for the movement of air. Unfortunately, this leaves a number of openings on both the shorter ends of the blocks and the middle. When experienced masons put a cinder block wall together, they mortar the long sides of the concrete blocks. One of the main reasons injection foam insulation is quite popular is that this type of insulation is well-suited for a cinder block wall. With that in mind, here are some tips and tricks you can use to insulate existing concrete block walls using the above-mentioned options. While these are the readily available and most effective options, which one you choose will depend on whether the wall in question has an exposed top or the concrete blocks are covered. The most common include injection foam insulation, spray foam insulation, foam boards, loose fill masonry insulation, and polystyrene beads. Learning how to insulate existing concrete block walls involves learning how to use several insulation options. One way to remedy this issue is to insulate the existing concrete block walls around your home or office. This means that they tend to let air in and out, leaving you with expensive electrical bills, not to mention a rather uncomfortable home as far as air conditioning is concerned. However, no matter what you call them, concrete block walls all have the same problem – they are somewhat porous. Concrete block walls go by a number of names, from cement block walls to cinder block walls. ![]()
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