Mstr Bath Over Garage-N.E.
I am contracting a 2,900 2-story home this fall in the Northeast (Buffalo,NY). The design calls for the master bath to be located over the attached garage (relocating is not an option). Besides extra insulation in the garage ceiling, what options do I have to keep the pipes from freezing and floor comfortable.
I have had two suggestions so far; the 1st is installing a mini-furnace in the corner of the garage, and the 2nd is run a supply line( no return) under the master bath floor from the main furnace (Forced air). Does anyone have any opinions? I am looking for a solution that make the most economic and functional sense.
Add some insulation to the garage. If it stays above freezing in the garage, you won't have any frozen pipes.
I would never want to design something in this day and age that required energy simply to prevent frozen pipes.
Can you run the supply lines through the walls of the conditioned space? Insulate thoroughly below the drains lines. The traps might be most at risk because water stands in them. Don't insulate on top of the pipes so they get some heat from above. Maybe you could use I-joists to get an extra-deep floor frame and insulate with blown cellulose.
Al Mollitor, Sharon MA
We have a house where the master closet and master bath are above the garage; the garage is not heated. It's an R2000 house, in eastern Canada, so the walls are 2x6, fiberglass insulation, and there's an inch of foam insulation on the outside of the walls. It hits -30C here in the winter frequently. Floors are warm, pipes never freeze.
I'm not sure what you expect the problems to be, if you build the house properly. Put the water and drain lines in the wall between the house and the garage, if they run through the garage ceiling, that's fine, too. Keep them to the warm side as much as possible (ie, keep them relatively high in the joist bays). Insulate properly, vapour barrier, sealed well to prevent air infiltration. No worries.
Good topic - bump
Justin Fink - FHB Editorial
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