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Posted by RicodJour on August 14, 2007, 10:16 am
> geo.n...@hotmail.com wrote:
>
>
> >>> Can anyone tell me the proper adhesive to secure ceramic tile
> >>> underlayment (hardiboard or duroc) to advantech subfloor? I know this
> >>> is done all the time so I assume there is a typical method. Thinset
> >>> mortar is not recommended for particle board which advantech is.
> >>> Someone told me liquid nails is what I should use....?
> >> Liquid Nails and screws.
>
> >> --
> >> NuWave Dave in Houston
>
> > Anyone else??
>
> Liquid nails and screws is what I've seen done. Thinset is for the tile
> not the backer board.
Not quite true. The prime enemy of tile is substrate movement.
Thinset supports the entire backer board, not just a few spots like
construction adhesive. If your subfloor is dead flat and you've dealt
with lippage between adjoining sheets by sanding or using a feathering
compound, the thinset is probably not necessary. I still use it every
time as it's foolproof and takes care of a lot of issues in one step.
Bonding layers together provides a far stiffer assembly than screws
and a bit of glue.
This from USG's web site:
Floors
Lamination
Laminate 12.7 mm (1/2)
DUROCK Panel to minimum
16 mm (5/8) thick exterior
grade plywood using adhesive
or mortar suitable for bonding
cement backer board to
plywood.Apply adhesive with
16 mm (5/8) V-notched
trowel or mortar with 6 mm
(1/4) square-notched trowel.
Laminate and secure one
panel at a time.Cover the
adhesive with the board
immediately.
R
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