Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 07-01-2012, 06:16 PM   #1
Member
 
Join Date: Dec 2008
Location: Peterborough, ON
Posts: 57
Share |
Default

Waterproofing with redgrave or not!?


I have had a couple of people from this site tell me to use regard in my newly constructed basement shower. Currently I have cement backer board up and a cement shower base with a rubber membrane ready for tile. My questions...

1. Do I NEED to put a waterproof membrane like redgard on the walls. Can I simply silicone the joints and screws?

2. If I use the redgard will this create another vapor barrier on the wall ( I have a vapor barrier in the wall to the outside already)?

All of your thoughts are welcome!

shorteared is offline   Reply With Quote
Old 07-01-2012, 06:32 PM   #2
DIY staff
 
Join Date: Sep 2009
Location: Kane county,Illinois
Posts: 21,618
Blog Entries: 1
Default

Waterproofing with redgrave or not!?


Red guard will insure that the water will stay in the shower and not soak into the board.

I suggest that you use it---it is not a great idea to have a double vapor barrier--bit that is better than relying on a plastic sheet that is full of holes from the rock screws.

What ever you choose to do---do not use silicone on the seams anf joint of the durrock---those should be covered with tilers mesh and filled with thinset as you tile--or (if you use Red Guard) filled lightly before the red guard is applied.

__________________
New members: Adding your location to your profile helps in many ways.--M--
oh'mike is offline   Reply With Quote
Old 07-01-2012, 06:38 PM   #3
Member
 
Join Date: Nov 2011
Location: Hartfield VA
Posts: 26,335
Default

Waterproofing with redgrave or not!?


Not sure how you came up with the silicone idea.
The seams get taped with webbed tile tape that's bedded with thin set as well as over the screw heads.
joecaption is online now   Reply With Quote
Old 07-01-2012, 07:30 PM   #4
Renovations contractor
 
Bonzai's Avatar
 
Join Date: Oct 2010
Location: Squamish, BC - Canada
Posts: 324
Default

Waterproofing with redgrave or not!?


Quote:
Originally Posted by shorteared View Post
I have had a couple of people from this site tell me to use regard in my newly constructed basement shower. Currently I have cement backer board up and a cement shower base with a rubber membrane ready for tile. My questions...

1. Do I NEED to put a waterproof membrane like redgard on the walls. Can I simply silicone the joints and screws?

2. If I use the redgard will this create another vapor barrier on the wall ( I have a vapor barrier in the wall to the outside already)?

All of your thoughts are welcome!
1. As regards RedGuard... By minimum code (which depends where you are) not necessarily. By common sense and modern building methods, yes absolutely. Cement backer board is not waterproof ie. it is porous.

2. The poly vapour barrier between the cement board and the studs is to keep moisture from the framing/insulation. The RedGuard on the cement board (tile side) is so that moisture that seeps through the grout or tile (if a porous tile) does not go any further and damage the cement board. You will only get condensation issues if 2 vapour barriers are next to each other with nothing but air between.
__________________
Home Renovations & Repairs
ADVENT HOME SOLUTIONS INC
Vancouver to Whistler & beyond
Bonzai is offline   Reply With Quote
Old 07-01-2012, 07:35 PM   #5
MarginallyQualified
 
Join Date: Dec 2011
Location: Winston-Salem NC
Posts: 3,663
Default

Waterproofing with redgrave or not!?


RedGard is GoodStuff
It'll even work on shower floors made of wood:
Attached Thumbnails
Waterproofing with redgrave or not!?-redgardfloor.jpg  
TarheelTerp is offline   Reply With Quote
Old 07-01-2012, 10:32 PM   #6
Member
 
Join Date: Dec 2008
Location: Peterborough, ON
Posts: 57
Default

Waterproofing with redgrave or not!?


You guys rock, thank you. You have convinced me. I do have another question about the ceiling of my shower. I do not plan on tiling it. Should I use blue drywall or cement board? Can I put RedGaurd on drywall? Your thoughts are much appreciated.
shorteared is offline   Reply With Quote
Old 07-01-2012, 10:53 PM   #7
Renovations contractor
 
Bonzai's Avatar
 
Join Date: Oct 2010
Location: Squamish, BC - Canada
Posts: 324
Default

Waterproofing with redgrave or not!?


In terms of the ceiling of the shower, normally the whole bathroom ceiling is just regular drywall with a good bathroom paint. If your shower is more enclosed and not close to the bathroom fan then it certainly doesn't hurt to use cement board ... Bear in mind though that it has a rough surface and will need skimming with mud to get a smooth finish. I would only ever waterproof the ceiling if I was building a steam shower with tiled ceiling.

Technically you can RedGard over regular drywall ... We do this when installing a kitchen backsplash rather than just tiling on the drywall directly. Think how much steam there is in a kitchen ;-)

FYI: there is a product by Mapei called Mapei HPG which is very similar to RedGard except it is blue. I used to use RedGard but found that we get better coverage with the Mapei product and it is also about 25% cheaper.

__________________
Home Renovations & Repairs
ADVENT HOME SOLUTIONS INC
Vancouver to Whistler & beyond
Bonzai is offline   Reply With Quote
The Following User Says Thank You to Bonzai For This Useful Post:
shorteared (07-02-2012)
Reply

Tags
shower, waterproof membrane


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Why I can't use thin-set mortar over RedGard waterproofing membrane? sukhenkoi Kitchen & Bath Remodeling 9 03-16-2013 02:39 PM
Stone Basement Waterproofing / Foundation Footings? troyce1 Concrete, Stone & Masonry 1 02-26-2012 10:11 PM
Conditioned Crawl Space - Advice re Waterproofing AND Int or ext insulation JohnNe Building & Construction 4 02-10-2012 06:53 AM
At a crossroads in my basement project - waterproofing help needed callisto9 Building & Construction 35 10-28-2010 02:01 AM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.