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Results 1 to 7 of 7
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8th April 2024, 03:21 PM #1
Senior Member
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- Nov 2010
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- Woodford, Qld
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- 120
form ply + cement sheeting OR 19/22mm cement sheeting
folks, for a raised platform in the bathroom we are currently building, can formply and 4.5mm cement sheet be used instead of going to the 19/22mm cement sheeting products? the bathroom is on a concrete slab and we need the raised area to get the right fall for the drains from shower and bath. we are doing it this way to avoid having to dig out the slab, retermite protect, etc. The raised platfrom is 3m x 1200 with joists (?) every 40 cm. the area that is under the bath will also have noggins to stop any twisting (and because i am a huge fan of overkill). the top surface will tiled when complete.
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8th April 2024, 03:47 PM #2
NO !!!!
Use the correct compressed sheet either 19 or 22 is ok and a minimum of 3 coats of waterproof membraneThe person who never made a mistake never made anything
Cheers
Ray
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8th April 2024, 04:55 PM #3
Senior Member
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- Nov 2010
- Location
- Woodford, Qld
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- 120
cheers, i was both hoping and not hoping that that would be the correct answer.
what is used to cut drain holes? will a regular hole bit do the job if the sheet is wet at the time?
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8th April 2024, 05:05 PM #4
Senior Member
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- Jun 2013
- Location
- Geelong
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- 87
Just a moment...
pick your size in this style, TCT tungsten carbide for better cut
cheers
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8th April 2024, 05:23 PM #5
Senior Member
- Join Date
- Nov 2010
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- Woodford, Qld
- Posts
- 120
cheers
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8th April 2024, 06:36 PM #6
Make sure you use the mastic sealant NOT SILICON for joints/junctions of wall/floor/step/bath with the reinforcing fabric.
The person who never made a mistake never made anything
Cheers
Ray
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9th April 2024, 06:12 AM #7
GOLD MEMBER
- Join Date
- Apr 2018
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- Nsw
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- 64
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- 558
You can also drill a series of holes around the circumference as close as possible together with a small say 5mm masonry bit not on hammer function with the sheet fully supported. Tap out the center and clean up with a diamond blade. We also recess the puddle flange in flush with the sheet with the diamond blade
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