Insulating An Exterior Bathroom Wall

Insulating interior bathroom walls.

Insulating an exterior bathroom wall.

Press the poly into the sealant. Insulate your attic outer walls and crawl space first as these areas have the most heat transfer. Insulating a bathroom proper insulation will help keep your bathrooms a comfortable temperature year round. Buy unfaced friction fit batts and seal the walls with a 4 mil poly vapor retarder.

The batt should not be tightly compressed against the studs. During this phase the stud spaces. Bathroom projects need special consideration because of the humidity and moisture that bathrooms generate. Thermalwall ph rigid eps insulation board for insulating the exterior walls of homes the advantages are plenty here panels are between 4 5 inches and 8 inches thick the exterior insulation is continuous and they can be attached with 6 inch 10 screws from 4 to 6 inches long.

Use special airtight electrical boxes see photo tip 5 or seal the poly to the electrical box with acoustical sealant. Place the insulation slabs or batts inside the wall cavity between the studs. Because fiberglass tends to be more porous moist air is likelier to flow through it. Use the discarded material to fill gaps nooks and crannies.

When moisture becomes trapped in walls mold and mildew can grow damaging your home and presenting a potential health danger. 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. 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. Insulate water heaters to prevent costly energy loss.

When you reach the end of the wall cut off the insulation. Adding insulation to your water heater can reduce standby heat losses by 25 to 45 percent. To add soundproofing weave a continuous roll of fiberglass insulation between staggered studs using insulation designed for 2x4 walls. Look for insulating pre cut jackets or blankets with an insulating value of at least r 8.

Seal the gap between the bottom plate of the wall and the floor with acoustical sealant or caulk. Sprayed insulation such as cellulose or foam are usually smarter choices than fiberglass for your bathroom. Weave loosely to fill the cavity but tightly enough so you won t have to compress the insulation when you install drywall.