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wonderboard on top of of sub-floor ??



 
 
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  #1  
Old December 10th 04, 08:12 PM
Andy S
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Default wonderboard on top of of sub-floor ??

You were right Colbyt...I'm back.

Thanks everyone with the suggestions for changing of valves. It was
actually fairly simple, the new valve fit perfectly with the existing pipe
inlets with the inlets being threaded couplers. No leaks first time around!

Anyhow, while finishing up the taping of the Wonderboard around the
bath/shower walls, I found rotten particle board around the base of the tub.
The sub-floor is in good shape but, of course, I am having to replace the
bad portions of particle board. Is there anything wrong with me replacing
the bad particle board with 1/2' Wonderboard? I'm also going to tile the
floor so I'm going to place on top of everything 1/4' Wonderboard (after
tearing off 3 layers of *poor* quality linoleum to help with floor height
issues).

Thanks again!

Andy S.


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  #2  
Old December 10th 04, 11:08 PM
Colbyt
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Posts: n/a
Default


"Andy S" wrote in message
...
You were right Colbyt...I'm back.

Thanks everyone with the suggestions for changing of valves. It was
actually fairly simple, the new valve fit perfectly with the existing pipe
inlets with the inlets being threaded couplers. No leaks first time

around!

Anyhow, while finishing up the taping of the Wonderboard around the
bath/shower walls, I found rotten particle board around the base of the

tub.
The sub-floor is in good shape but, of course, I am having to replace the
bad portions of particle board. Is there anything wrong with me replacing
the bad particle board with 1/2' Wonderboard? I'm also going to tile the
floor so I'm going to place on top of everything 1/4' Wonderboard (after
tearing off 3 layers of *poor* quality linoleum to help with floor height
issues).

Thanks again!


I would bite the bullet now and get all the particle board out of the
bathroom. I can't think of any reason other than cost that you could not
use 2 layers of wonderboard. I have found the hardiebacker product to be a
tad easier to work with than wonderboard.


Colbyt


  #3  
Old December 12th 04, 12:40 AM
LBaker
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Posts: n/a
Default


"Colbyt" wrote in message
...

"Andy S" wrote in message
...
You were right Colbyt...I'm back.

Thanks everyone with the suggestions for changing of valves. It was
actually fairly simple, the new valve fit perfectly with the existing

pipe
inlets with the inlets being threaded couplers. No leaks first time

around!

Anyhow, while finishing up the taping of the Wonderboard around the
bath/shower walls, I found rotten particle board around the base of the

tub.
The sub-floor is in good shape but, of course, I am having to replace

the
bad portions of particle board. Is there anything wrong with me

replacing
the bad particle board with 1/2' Wonderboard? I'm also going to tile

the
floor so I'm going to place on top of everything 1/4' Wonderboard (after
tearing off 3 layers of *poor* quality linoleum to help with floor

height
issues).

Thanks again!


I would bite the bullet now and get all the particle board out of the
bathroom. I can't think of any reason other than cost that you could not
use 2 layers of wonderboard. I have found the hardiebacker product to be

a
tad easier to work with than wonderboard.


Colbyt



Wonderboard has no structural value for floors. It is a decoupling system
for tile installations. It must have a subfloorunder it.... From the
manufacturer-

Subfloor Requirements: 5/8" (16 mm) exterior grade plywood
or OSB panels (PRP-108) should be securely glued and fastened
to floor joists. Floor joists framing should be spaced a maximum
of 16" (40.6 cm) o.c. 3/4" (19 mm) exterior grade plywood or OSB
subfloor framed with I-joists spaced a maximum of 19.2"
(48.7 cm) o.c. or I-joists or truss system spaced a maximum of
24" (61 cm) o.c. are also acceptable. When setting dimensional
stone larger than 12" x 12" (30 cm x 30 cm), a 3/4" (19 mm)
subfloor must be used for all installations. All plywood or OSB
subfloor sheets must be gapped 1/8" (3 mm).
Installation: Using a 1/4" (6 mm) square-notch trowel, apply a
setting bed of latex-modified mortar to the subfloor or base.
Immediately laminate 1/2" WonderBoard to subfloor base,
leaving a 1/8" - 3/16" (3 - 5 mm) space between boards at all
joints and corners. Stagger joints so they do not line up with
underlying substrate joints. Fasten backerboard every 6" - 8"
(15.2 - 20.3 cm) o.c. throughout board field and around all
edges while setting bed mortar is still workable. Around
perimeter of each board, locate fasteners within 1/2" - 2"
(1.3 - 5 cm) of edge. Fill all joints and corners solid with latexmodified
mortar. Taping of floor joints are not required.



  #4  
Old December 13th 04, 03:47 PM
Andy S
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Posts: n/a
Default


"Colbyt" wrote in message
...



I would bite the bullet now and get all the particle board out of the
bathroom. I can't think of any reason other than cost that you could not
use 2 layers of wonderboard. I have found the hardiebacker product to be

a
tad easier to work with than wonderboard.


Colbyt


Yea, that's what I'm thinking myself. I'm planning of removing the current
vanity / sink and replacing with something more modern. With the vanity
out, and it being a small bathroom, it won't take more than say 4 or 5
sheets to cover the whole bathroom floor. $100 for two layers, I can handle
that.


  #5  
Old December 13th 04, 03:48 PM
Andy S
external usenet poster
 
Posts: n/a
Default


"LBaker" wrote in message
...

Wonderboard has no structural value for floors. It is a decoupling system
for tile installations. It must have a subfloorunder it.... From the
manufacturer-


Thanks for the info...but like my original post indicated, I do have a sub
floor that is in good condition.


 




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