How To Insulate An Outside Bathroom Wall

To add soundproofing weave a continuous roll of fiberglass insulation between staggered studs using insulation designed for 2x4 walls.

How to insulate an outside bathroom wall.

When you reach the end of the wall cut off the insulation. Liquid barriers may also be used to prevent moisture from getting into the walls. Place the insulation slabs or batts inside the wall cavity between the studs. One hole per stud space is necessary.

Bathroom projects need special consideration because of the humidity and moisture that bathrooms generate. The outside wall in my bathroom has old plaster and lathe covered by old fashioned thin printed paneling. When moisture becomes trapped in walls mold and mildew can grow damaging your home and presenting a potential health danger. I dont know if i should tear out the plaster and lathe or cover it up and how to keep the winter cold from causing problems.

Buy unfaced friction fit batts and seal the walls with a 4 mil poly vapor retarder. Press the poly into the sealant. Install vapor barriers after the bathroom s plumbing electrical and insulation are complete. Use the discarded material to fill gaps nooks and crannies.

Tuck the insulation into the cavity snug against the top of the stud bay and edges flush with the. To do that lay a batt on the floor in. Proper insulation will help keep your bathrooms a comfortable temperature year round. Plastic sheeting is used because of its low level of water permeability.

Handy homeowners can rent an insulation blower and drill holes in the wall above the shower to blow in fiberglass or cellulose insulation. 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. Seal the gap between the bottom plate of the wall and the floor with acoustical sealant or caulk. It s also a relatively easy option for diyers.

Weave loosely to fill the cavity but tightly enough so you won t have to compress the insulation when you install drywall. For narrow stud bays you have to trim down the batt s width. Theres a replacement window in the middle that needs framed out and the whole wall needs upgraded desperately.