Exterior Wall Insulation Bathroom

According to the roxul site a vapor barrier is only required for external walls.

Exterior wall insulation bathroom.

Is it necessary to change insulation to un faced or cut slits in the faced insulation on this exterior wall. I will be using kerdi over durock on the three tub surround walls. It s easy to insulate your walls with fiberglass insulation at least when they re open but the job still requires attention to detail to get the maximum benefit. Another path is foam pipe insulation which will keep pipes warmer during cold months.

Sprayed insulation such as cellulose or foam are usually smarter choices than fiberglass for your bathroom. The short wall of the tub will be on an outside wall that currently has batt faced insulation. This combination ensures that the insulation is neither too loose nor too tightly packed within the walls. Check behind knee walls which are walls between living spaces and the garage or attic.

Jm kraft faced formaldehyde free fiberglass insulation offers r values ranging from r 11 to r 38 is ideal for moisture control in exterior walls and provides excellent temperature and noise control. Every gap and compressed batt leaves a path for heat or cold to escape. Getting everything back together and have used the roxul stone mineral insulation for the walls comfort on one exterior wall and safe n sound for the inside walls and good ol pink panther faced for the ceiling. 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.

Place the insulation slabs or batts inside the wall cavity between the studs. Turn off the electricity then remove an electrical outlet cover for a view of exterior insulation. According code common sense energy star and the laws of physics if you do not insulate and air seal exterior walls behind tubs and showers before installing the tub shower then they will be cold leaky parts of the house which will waste energy sap comfort and grow mold. Measure and cut the fiberglass batt for an exact fit.

I am remodeling my bathroom with a new alcove tub. Two by four 2x4 stud walls with true 4 inch depth. Check garage walls and ceilings that are adjacent to conditioned spaces. Use r 19 or r 21 kraft faced fiberglass insulation for two by six 2x6 walls.

To the measurement to ensure a snug fit. Because fiberglass tends to be more porous moist air is likelier to flow through it. Add about 1 4 in.