Insulate Exterior Bathroom Wall

When moisture becomes trapped in walls mold and mildew can grow damaging your home and presenting a potential health danger.

Insulate exterior bathroom wall.

Life s too short so enjoy it. In the best case scenario you can insulate the wall behind the shower during initial construction at the same time you insulate the rest of the exterior walls. It s important to have no matter what weather conditions you live in though the way you install it may vary. Sprayed insulation such as cellulose or foam are usually smarter choices than fiberglass for your bathroom.

Seal the gap between the bottom plate of the wall and the floor with acoustical sealant or caulk. In exterior walls kraft faced fiberglass insulation helps control temperature and humidity inside the structure. It will be cheaper on the wallet too. If the whole batt cannot fit inside the cavity cut off the excess material with a scalpel knife leaving a couple of centimeters over on each side to ensure a tight fit.

During this phase the stud spaces. Another path is foam pipe insulation which will keep pipes warmer during cold months. Use special airtight electrical boxes see photo tip 5 or seal the poly to the electrical box with acoustical sealant. All it takes is a utility knife a straightedge and a little patience to make sure the insulation completely fills the stud cavity side to side and top to bottom without being overly compressed.

Press the poly into the sealant. Place the insulation slabs or batts inside the wall cavity between the studs. Buy unfaced friction fit batts and seal the walls with a 4 mil poly vapor retarder. Because fiberglass tends to be more porous moist air is likelier to flow through it.

Un faced batt type insulation with caulked joints for air sealing would allow for any moisture within the wall cavity to dry to the exterior. A well insulated home keeps everyone comfortable and happy.