Designing Kitchens and Bathrooms - Hardibacker in shower stall questions??
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kool_bean
05-08-08, 08:20 AM
I'm remodelling and re-tiling my shower stall which has ceramic tile on top of 1/2" greenboard which is on top of 1/2" drywall. I've ripped off the tile and greenboard but have left the drywall up for the moment.
#1: I'm planning to install Hardibacker but wondering if there is any advantage to installing it over the existing drywall or just remove the drywall and install it directly to the wall studs?
#2: Is it necessary or advisable to apply a waterproof membrane to the seams and joints of the Haridbacker with RedGard or the like? The Home Depot Tiling 1-2-3 book shows them just installing tile directly onto the backerboard while a Family Handyman magazine project shows them waterproofing seams, corners and screwheads.
Thanks.
#1: I'm planning to install Hardibacker but wondering if there is any advantage to installing it over the existing drywall or just remove the drywall and install it directly to the wall studs?
#2: Is it necessary or advisable to apply a waterproof membrane to the seams and joints of the Haridbacker with RedGard or the like? The Home Depot Tiling 1-2-3 book shows them just installing tile directly onto the backerboard while a Family Handyman magazine project shows them waterproofing seams, corners and screwheads.
Thanks.
HeresJohnny
05-08-08, 09:46 AM
#1: I'm planning to install Hardibacker but wondering if there is any advantage to installing it over the existing drywall or just remove the drywall and install it directly to the wall studs?
Leaving the drywall up would be a disadvantage, not an advantage. Take the drywall down, insulate exterior walls, 6 mill poly vapor barrier over studs, then the hardi.:)
#2: Is it necessary or advisable to apply a waterproof membrane to the seams and joints of the Haridbacker with RedGard or the like? The Home Depot Tiling 1-2-3 book shows them just installing tile directly onto the backerboard while a Family Handyman magazine project shows them waterproofing seams, corners and screwheads.
Hardi is not waterproof, so Im not sure what advantage it would be to waterproof "seams and joints". While hardi is unaffected by water, it will not keep water or vapor from passing though it to the stud walls. No need to waterproof only part unless you intend to waterproof all. Waterproofing the shower walls is not necessary but if thats what you want, there may be other better ways to build your shower.:)
Leaving the drywall up would be a disadvantage, not an advantage. Take the drywall down, insulate exterior walls, 6 mill poly vapor barrier over studs, then the hardi.:)
#2: Is it necessary or advisable to apply a waterproof membrane to the seams and joints of the Haridbacker with RedGard or the like? The Home Depot Tiling 1-2-3 book shows them just installing tile directly onto the backerboard while a Family Handyman magazine project shows them waterproofing seams, corners and screwheads.
Hardi is not waterproof, so Im not sure what advantage it would be to waterproof "seams and joints". While hardi is unaffected by water, it will not keep water or vapor from passing though it to the stud walls. No need to waterproof only part unless you intend to waterproof all. Waterproofing the shower walls is not necessary but if thats what you want, there may be other better ways to build your shower.:)
HotinOKC
05-08-08, 06:18 PM
Waterproofing the shower walls is not necessary but if thats what you want, there may be other better ways to build your shower.:)
:D SCHLUTER!!!!!!!!! :D
:D SCHLUTER!!!!!!!!! :D
Michael Thomas
05-08-08, 06:30 PM
IIs it necessary or advisable to apply a waterproof membrane to the seams and joints of the Haridbacker with RedGard or the like? The Home Depot Tiling 1-2-3 book shows them just installing tile directly onto the backerboard while a Family Handyman magazine project shows them waterproofing seams, corners and screwheads.
"1) Prior to setting the tile, fill all HARDIBACKER ® sheet joints with the same mortar used to set the tiles. 2) Embed the 2" wide, high strength, alkali resistant, fiberglass cementitious backer unit tape in the mortar and level."
HARDIBACKER INSTALLATION GUIDE (http://www.holdenhumphrey.com/jh/hardibackerinstall.htm)
"1) Prior to setting the tile, fill all HARDIBACKER ® sheet joints with the same mortar used to set the tiles. 2) Embed the 2" wide, high strength, alkali resistant, fiberglass cementitious backer unit tape in the mortar and level."
HARDIBACKER INSTALLATION GUIDE (http://www.holdenhumphrey.com/jh/hardibackerinstall.htm)