The facing is a vapor retarder meant to slow the migration of water vapor through the wall.
Insulating outside bathroom walls.
Bathroom projects need special consideration because of the humidity and moisture that bathrooms generate.
Buy unfaced friction fit batts and seal the walls with a 4 mil poly vapor retarder.
How to insulate behind shower walls new construction.
For narrow stud bays you have to trim down the batt s width.
When moisture becomes trapped in walls mold and mildew can grow damaging your home and presenting a potential health danger.
What needs to be insulated.
To do that lay a batt on the floor in.
Properly insulated bathroom reduces energy consumption and saves money.
If you are installing fiberglass insulation in outside walls pay attention to the paper facing.
Use special airtight electrical boxes see photo tip 5 or seal the poly to the electrical box with acoustical sealant.
Steps on insulation installation 1.
Plan your bathroom insulating project in stages tackling one thing at the time.
Seal the gap between the bottom plate of the wall and the floor with acoustical sealant or caulk.
If warm moist air from inside a house travels through the wall it will condense when it hits the cold sheathing on the outside.
Humidity problem can be solved by installing a vapor barrier around the walls and on the floor.
To accomplish this you have to insulate interior walls and hot water pipes to minimize heat loss.
Insulating a bathroom proper insulation will help keep your bathrooms a comfortable temperature year round.
Tuck the insulation into the cavity snug against the top of the stud bay and edges flush with the.