DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Roofing and Siding > Flat Rubber Roof is holding water




Reply
 
Thread Tools Search this Thread Display Modes
Old 09-13-2011, 06:01 PM  
PDaddona
Junior Member
 
Join Date: Sep 2011
Location: Concord, CA
Posts: 2
Default Flat Rubber Roof is holding water

Hi. Approximately 9 years ago, I replaced the roof on my house. The house is I think 1959. The roofer at the time suggested we use a rubber roof made from recycled tires for a portion of the roof that is flat. Here the problem is though, over time the roof has become convex just enough to hold water in it after a rain. The water than stands there and only has usual evaporation. The water then starts seeping through the rubber, to the interior painted textured ceiling. The "phantom moisture" becomes steam due to the high temperature in that room, and then pops the texture off of the ceiling. Roofer has gone out of business. Does anyone have any suggestions as to how I make the roof concave so that it does not hold the moisture? Is this something I can do myself? Or should I hire a professional? Any one who has ideas for me I thank you in advance



__________________
PDaddona is offline  
 
Reply With Quote Quick reply to this message
Old 09-13-2011, 07:06 PM  
oldognewtrick
Moderator
HRT_MODERATOR.png
 
oldognewtrick's Avatar
 
Join Date: Jul 2009
Location: Nashville, TN
Posts: 5,868
Liked 511 Times on 425 Posts
Likes Given: 150

Default

Can you post some pics of the area and the membrane that was installed? Rubber roofs don't leach water except through seams, penetrations and laps seams. The problem with trying to patch rubber roofing of this age is that it chalks as it ages and cleaning it to accept sealant is sometimes difficult at best.

The only way to elevate the area that is holding water is to correct this situation when the roof is replaced.

Also, how was the rubber installed, loose laid over the decking or fully adhered to the substrate (glued)?

Oh, one more thing to House Repair Talk.



__________________
oldognewtrick is online now  
 
Reply With Quote Quick reply to this message
Old 09-14-2011, 04:17 AM  
BridgeMan
Senior Member
 
BridgeMan's Avatar
 
Join Date: Aug 2011
Location: Cottage Grove, Oregon
Posts: 738
Liked 75 Times on 67 Posts

Default

No easy fix, if the problem is in the roof buildup itself, unless you're talking about just a half-inch or so of "dishing" over a short run. You could eliminate that by building up with a heavy course or two of mineral granules application over liquid asphalt.

If that doesn't appear to be the case, and the sag is more significant, you might want to pull a section of sheetrock to determine the size and spacing of joists supporting the roof. An engineer could tell you if your joists are undersized for the span, and possibly suggest viable solutions. The installation of flitch plates comes to mind, glued and screwed to the bottoms of the joists while they are in a pre-cambered condition. It wouldn't be cheap, and would require redoing the entire ceiling under the roof.

__________________
BridgeMan is offline  
 
Reply With Quote Quick reply to this message
Old 09-17-2011, 08:53 PM  
chb70
Junior Member
 
chb70's Avatar
 
Join Date: Jan 2009
Posts: 7
Default

Definitely need some pics to see what is happening.

Chicago Roofing

__________________
chb70 is offline  
 
Reply With Quote Quick reply to this message
Old 09-26-2011, 03:01 PM  
PDaddona
Junior Member
 
Join Date: Sep 2011
Location: Concord, CA
Posts: 2
Default Thank you all

Hey there everyone. I wanted to thank you for your answers. I had a roofer to the house, and he said that the flat roof is fine, and should last another 5 - 10 years. So thank you everyone!



__________________
PDaddona is offline  
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options

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


Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
Flat Roof astephens Roofing and Siding 4 08-31-2011 05:28 PM
Flat Rubber Roof with Leaky Interior Drain dpkline Roofing and Siding 0 08-18-2010 12:53 PM
Flat Roof Reese Reece Roofing and Siding 2 02-18-2009 07:27 PM
Flat Roof SPISurfer Roofing and Siding 5 11-20-2008 11:12 AM
Flat Roof geordieT Roofing and Siding 1 04-14-2008 10:02 AM

Newest Threads

LATEST SPONSOR DEALS