Go Back  DoItYourself.com Community Forums > Interior Improvement Center > Designing Kitchens and Bathrooms
Reload this Page >

Shower bench replacement left EXPOSED drywall...concerned about MOLD...Help!

Shower bench replacement left EXPOSED drywall...concerned about MOLD...Help!


  #1  
Old 06-18-15, 11:46 AM
J
Member
Thread Starter
Join Date: Mar 2015
Location: Canada
Posts: 4
Upvotes: 0
Received 0 Upvotes on 0 Posts
Shower bench replacement left EXPOSED drywall...concerned about MOLD...Help!

My contractor installed my shower bench with a negative slope so the water pooled. In replacing the granite bench, the drywall below it that had a waterproof membrane but it stuck to the bench and was removed. The contractor cut the drywall out under the bench but left the drywall edges exposed (see pics) and simply put mortar down then laid down the new bench. As far as I know, mortar, grout and tile are not waterproof so effectively the drywall will be exposed to water and humidity and hence the potential for MOLD.
Can someone PLEASE advise if I am correct to be concerned...!
Thanks you all.
 
Attached Images    
  #2  
Old 06-18-15, 04:19 PM
chandler's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Dec 2005
Location: USA
Posts: 39,964
Upvotes: 0
Received 9 Upvotes on 8 Posts
Welcome to the forums! Drywall in a wet area?? First thing is to deep six the contractor. You should have concrete backer underlayment on all surfaces or use Ditra as a slip agent. In addition to your positive slope, you need to RedGard all horizontal surfaces and places like cubbies that can accumulate water. I know you want to keep the shower, but you are jousting at windmills thinking it will get better. It is better to rebuild it all, IMO. Hang in here, as others will chime in their opinion which may vary.
 
  #3  
Old 06-19-15, 05:31 AM
J
Member
Thread Starter
Join Date: Mar 2015
Location: Canada
Posts: 4
Upvotes: 0
Received 0 Upvotes on 0 Posts
Potential mold growth....

Thanks...I appreciate your response and look forward to others. I MUST clarify, when I said contractor, it is a newly built house (4 months) so it is really the builder. Is there or are there codes or regulations or standards other than OBC 9.29.2 that would suggest what the builder did is wrong and bad so I have an argument/case with Tarion? Intuitively I believe it is wrong but what do I have to fall back on other than my opinion?
 
  #4  
Old 06-19-15, 03:18 PM
chandler's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Dec 2005
Location: USA
Posts: 39,964
Upvotes: 0
Received 9 Upvotes on 8 Posts
Common sense and a bubble level with the builder in presence to show him the discrepancy in practices should open his eyes. He may not have been aware the sub used sheetrock in a shower.
 
  #5  
Old 06-19-15, 03:45 PM
M
Forum Topic Moderator
Join Date: Mar 2005
Location: USA - N.E.Tn
Posts: 49,398
Received 722 Upvotes on 633 Posts
..... or he could be one of those builders that will cut corners to save a buck
Is it possible to look at some of his houses currently under construction?
 
  #6  
Old 06-19-15, 04:03 PM
czizzi's Avatar
Member
Join Date: Jul 2007
Location: USA
Posts: 7,388
Received 15 Upvotes on 13 Posts
Was there any other membrane under the tile? and on top of the drywall? Kerdi waterproofing membrane can be used with drywall. It is orange in color and I see no evidence of it in your pictures.

If it is tile over straight drywall, then it is done completely wrong and only a matter of time before it fails.
 
  #7  
Old 06-19-15, 06:00 PM
J
Member
Join Date: May 2007
Location: USA
Posts: 1,606
Upvotes: 0
Received 1 Upvote on 1 Post
Yea, it's all wrong. The builder needs to find a tileman.

Jaz
 
  #8  
Old 06-19-15, 07:24 PM
J
Member
Thread Starter
Join Date: Mar 2015
Location: Canada
Posts: 4
Upvotes: 0
Received 0 Upvotes on 0 Posts
Thanks everyone...I don't feel so alone anymore!! The bench was made of wood and had a membrane over it and up the back wall behind the bench. The shower is 5x5 and had a shower pan up to but nor under the bench....I am not sure how they tied the two together...if at all?! Then, they put sheetrock (drywall) that had a bluish/green paper on top of that membrane so that they had something to put the mortar on for the tile and bench. Im not sure how well my pictures showed this...but when the old granite seat was pulled up, it pulled the drywall with it so the builder cut around the underside of the seat, leaving the old drywall edging from around the seat exposed (see pic) then simply put mortar down and hen the new bench. The first membrane is still there but again, the sheetrock (drywall) is exposed....Hope this clarifies a little.....any thoughts if this contravenes building code at all...or any standard?
 
  #9  
Old 06-19-15, 08:24 PM
chandler's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Dec 2005
Location: USA
Posts: 39,964
Upvotes: 0
Received 9 Upvotes on 8 Posts
Probably not "code" violation, but definitely not best practices. He needs to send in a real tile person to tear it all out and do it right. You will have to live with the poor workmanship if you don't get him to correct it. His problem, not yours, IMO.
 
  #10  
Old 06-24-15, 09:03 AM
J
Member
Thread Starter
Join Date: Mar 2015
Location: Canada
Posts: 4
Upvotes: 0
Received 0 Upvotes on 0 Posts
I am meeting with the builder on Monday, other than telling him its wrong and to replace it...are there any other messages I should send him?
Thanks everyone!!:NO NO NO:
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: