Basement bathroom with in-floor heat ... subfloor?

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Beneque
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Joined: Wed Sep 18, 2013 6:10 pm

Basement bathroom with in-floor heat ... subfloor?

Post by Beneque » Wed Sep 18, 2013 6:32 pm

Hi Shannon,

Love the videos on youtube!

I'm about to finish a basement bathroom and am going to put in-floor heating (True Comfort). Here is what I'm thinking of doing and would like your opinion.

- 1" Foamular C-300 on the slab
- 1/2" plywood on Foamular with tapcons every 8" or so.
- True Comfort installation encased in 3/8" to 1/2" self levelling concrete.
- Ditra membrane.
- Ceramic tiles.

I am wondering if the layers under the self levelling concrete are the right choice. I need to try meet the rest of the finished floor which is at 2 1/2" and I'd like some insulation under my heated floor.

Thanks in advance!


Ian

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Shannon
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Re: Basement bathroom with in-floor heat ... subfloor?

Post by Shannon » Thu Sep 19, 2013 7:42 am

Never have added foam under my heated floors because of the extra thickness, but in your case you need it. I think this would be fine though.
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Beneque
Posts: 2
Joined: Wed Sep 18, 2013 6:10 pm

Re: Basement bathroom with in-floor heat ... subfloor?

Post by Beneque » Fri Sep 20, 2013 11:09 am

Thanks for the response.

mcgsxr
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Joined: Thu Jan 10, 2013 3:05 pm

Re: Basement bathroom with in-floor heat ... subfloor?

Post by mcgsxr » Mon Oct 21, 2013 12:04 pm

In the main part of my basement, there is Delta FL, and 5/8th plywood subfloor, then high grade underpad and carpet.

In my bathroom, I did not put in a subfloor.

My bathroom floor is about 1/2 inch lower than the carpet. It is not bad though, since it is s soft slope of carpet, vs a hard edge of 2 different floors meeting.

I will say that my in floor heating in the bathroom takes a long time to pull back up to the daytime set temperature from the overnight temp. I bet subfloor would have addressed that too.

Good luck with your install!

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