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Old 08-16-2013, 06:26 PM   #1
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Do we have the steps right?


Hi Folks....we just want to make sure we aren't forgetting any steps:

(Background...total kitchen renovation. We installed 5/8"ply on the floor, and now we are ready to install the in-floor heating. Not a mat, the heat cable/wire)

Soooo....

1) Clean the floor really well.
2) Apply/spray a bonding agent on the plywood.
3) Install the heat wire.
4) Apply thinset (being careful not to nick any heat wire)
5) Ready for tile.

Does this look right?

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Old 08-16-2013, 10:28 PM   #2
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Do we have the steps right?


It might be right, I can't tell from the little info you supplied.

Is the 5/8" ply the subfloor or underlayment?

Is the framing stiff enough for tiles?

What brand warming wires and what do they say?

What type of tiles? Is the floor flat enough?

Jaz

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Old 08-17-2013, 06:32 AM   #3
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Do we have the steps right?


My bad. I should know to supply as much info as I have

Ok.
The 5/8" ply is what we put on top of the existing tongue and groove. (1" thick laid diagonal, 5-6" boards)
Ran the deflector and were good...we're putting down 24x12 porcelain tile.
The wire brand is 'stelpro 240wat'
The floor is pretty darned flat for this old house
(No humps or dips, checked with laser level)

Shoot. Do we need an underpayment on top of the subfloor?
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Old 08-17-2013, 07:06 AM   #4
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Do we have the steps right?


Check with the heating manufacturer---Typically the wires are fastened to the floor--then a layer of self leveling compound is used to embed the coils.

The tile is set on top of the self leveling compound.
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Old 08-17-2013, 07:47 AM   #5
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Do we have the steps right?


We installed our in floor electric heat using thinset over the wires. This was in accordance with manufacturer recommendations. You need to be very careful you do not nick the wires, so we used a plastic thinset application tool (again in accordance with manufacturer recommendations). We had the option of a self levelling compound, but since our floor was pretty flat, it was not necessary. We had to mechanically fasten the wires first, manufacturer recommended hot glue or staples as I recall, we used hot glue in a few places.
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Old 08-17-2013, 07:49 AM   #6
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Do we have the steps right?


Thank you.
There's a pretty good installation video on the heated floor cable in the company website. We've only installed a mat before, so the wire is new to us.

Just making sure we don't need anything in top of the subfloor before we begin.
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Old 08-17-2013, 07:17 PM   #7
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Do we have the steps right?


I don't know about thinset over a plywood subfloor---I would not do that myself---properly prepared, self leveling compound is approved for that use---Mike----

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