Flat Roof Ice Dam And More Problems! - Roofing/Siding - DIY Home Improvement | DIYChatroom


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Roofing/Siding

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

Reply
 
Thread Tools Display Modes
Old 04-07-2011, 04:00 PM   #1
Newbie
 
Join Date: Apr 2011
Posts: 2
Rewards Points: 10
Default

Flat roof ice dam and more problems!


We have a flat roof over our dining room. It creates awful ice dams and water pours into the room over the windows. What is the best way to fix a flat roof? Does it need to be built up and if so how or is there a different material that could be applied? Also, how does one go about insulating the ceiling under the roof? This has been such a nightmare! Thanks so much for any advice.

Advertisement

swig33 is offline   Reply With Quote
Old 04-07-2011, 04:05 PM   #2
Pro Slate Roofer
 
tinner666's Avatar
 
Join Date: Mar 2005
Location: Richmond, Va.
Posts: 1,611
Rewards Points: 1,038
Default

Flat roof ice dam and more problems!


We need pictures from the roof, and from the affected area to be able to help.

Advertisement

tinner666 is offline   Reply With Quote
Old 04-07-2011, 04:58 PM   #3
Newbie
 
Join Date: Apr 2011
Posts: 2
Rewards Points: 10
Default

Flat roof ice dam and more problems!


I can't get on the roof at this time, but I have attached some pictures. There is a tarp on the roof which was of no help. There was rolled roofing on originally which leaked and then shingled which we later found out was also the wrong type. The wood near the gutters we were told was saturated and rotting. It also seems to me that the flashing that is on the gutters should not be laying behind the gutter. I have attached a picture of that as well along with the icicles which hung on the outside of the gutters and also inside along the house. Now that the weather is heating up we have a musty smell in the dining room. I am terrified that the water may have caused mold and/or rotting to occur in the dry wall. I have no idea how to tackle all of this. Please let me know if other pictures would be helpful. Thanks!
Attached Thumbnails
Flat roof ice dam and more problems!-1.jpg   Flat roof ice dam and more problems!-3.jpg   Flat roof ice dam and more problems!-5.jpg  
swig33 is offline   Reply With Quote
Old 04-07-2011, 05:36 PM   #4
old guy contractor
 
tcleve4911's Avatar
 
Join Date: Nov 2010
Location: Maine on Little Sebago
Posts: 857
Rewards Points: 500
Default

Flat roof ice dam and more problems!


Rolled roofing is a waste of money.
Any roof, even a steep pitch can have ice dams.

The trick is don't let the water come into the house.

Options

1.)
Strip the roof of the existing material.
Repair the rotted and damaged sheathing

Ice & Water Shield the entire roof.
Reroof with shingles.

2.)
Reroof the low pitch area with a rubber roof

And while we're at it, the cure for the Ice buildup is insulation.
You have a major heat loss melting and freezing the snow.
tcleve4911 is offline   Reply With Quote
Old 04-07-2011, 08:08 PM   #5
Member
 
Join Date: Jan 2007
Posts: 1,796
Rewards Points: 1,018
Default

Flat roof ice dam and more problems!


I think your best bet is to get on a ladder and shovel off the snow.

Or, hire a roofing contractor and build up that roof to one angled surface.
handy man88 is offline   Reply With Quote
Old 04-07-2011, 08:09 PM   #6
Low Slope Roofing
 
Join Date: Jan 2011
Location: Nebraska
Posts: 778
Rewards Points: 1,034
Default

Flat roof ice dam and more problems!


On something that size I would use a single ply, IE EPDM, TPO or PVC. Looks as if you could do it in one piece with out any seams. even if there is not a big deal. You probably want to replace the insulation in the rafters if its been that wet. Also possably have damaged sheeting, so strip off the old roofs repair and replace whats needed. If you cant insulate well you could use a 1 1/2 ISo on the roof before the membrane. Alot of times these really are not do it your self as the tie in to the shingles needs to be done properly. The membrane should go up the slope atleast 18-24 inches and then shingled back down over it to about 8-12 inches. Again not really DIY material.
1985gt is offline   Reply With Quote
The Following User Says Thank You to 1985gt For This Useful Post:
seeyou (04-12-2011)
Old 04-07-2011, 10:34 PM   #7
Member
 
Join Date: Mar 2010
Location: New York
Posts: 1,763
Rewards Points: 40
Default

Flat roof ice dam and more problems!


I will bet you that when you can get up on a ladder to inspect that roof you will find low spots where your roof deck has sagged and puddles of water near the edge. It will give you years of grief until it is properly repaired. The immediate fix in the winter months is to shovel the snow off.

As was previously stated that low pitch over a conditioned area in the northern climate is not a good idea. But, if building up the pitch is not economically feasable, then the next best solution is to repair the deck and replace the roof with EPDM.
Jim F is offline   Reply With Quote
Old 04-09-2011, 11:00 AM   #8
Member
 
Join Date: Mar 2011
Posts: 59
Rewards Points: 75
Default

Flat roof ice dam and more problems!


Your gutter is not draining right it looks to me like there is a low spot in the gutter right above the window it ponds there and then the water freezes and backs up under the drip edge then finds it way behind the siding to the window. Rework the slope on your gutter add some more downspouts and add a heat tape for next winter to melt and ice from daming up in the gutter or move to Florida..... just a thought

Last edited by Don Smith; 04-09-2011 at 11:03 AM.
Don Smith is offline   Reply With Quote
Old 04-13-2011, 06:48 PM   #9
Member
 
Join Date: Mar 2010
Location: New York
Posts: 1,763
Rewards Points: 40
Default

Flat roof ice dam and more problems!


Quote:
Originally Posted by Don Smith View Post
Your gutter is not draining right it looks to me like there is a low spot in the gutter right above the window it ponds there and then the water freezes and backs up under the drip edge then finds it way behind the siding to the window. Rework the slope on your gutter add some more downspouts and add a heat tape for next winter to melt and ice from daming up in the gutter or move to Florida..... just a thought
The gutter could very well be draining right. I could not see any low spots on those pictures. The problem with a winter like the one we just had is that the gutter systems get overwhelmed by the ice buildup (dams). that gutter could have been wall to wall icicles even with a proper slope and a clear downspout.
Jim F is offline   Reply With Quote
Old 04-13-2011, 07:29 PM   #10
Remodeling Contractor
 
oldfrt's Avatar
 
Join Date: Oct 2007
Location: Northwest Ct.
Posts: 225
Rewards Points: 152
Default

Flat roof ice dam and more problems!


Quote:
Originally Posted by swig33 View Post
Now that the weather is heating up we have a musty smell in the dining room. I am terrified that the water may have caused mold and/or rotting to occur in the dry wall. I have no idea how to tackle all of this. Please let me know if other pictures would be helpful. Thanks!
Swig,
We are currently finishing up some repairs that were due to ice dams.

We started removing wallboard and insulation 2 months after it last leaked due
to Ins.Co.'s dragging their feet.
The inside of the sheathing was still soaking wet and mold had started to
grow.We had the Ins.Co.'s remediation Co.come back to finish the
removal and treat for the mold.
All these expenses were picked up by the insurer.
State law here (Ct.), states :any wet wallboard that has remained wet for 48hrs.
must be removed.

First thing to do is get the ceiling opened up,and see if any mold has started.
The musty smell is pretty much your cue to get a remediation Co.in there
and address this Asap.Get your Ins.Co. over there to see if it will cover
the expenses.

To many people who made claims for water damage have pocketed the money
for repairs,and just painted over the water stains.
If these issues are not addressed now,and mold develops farther,the cost to
fix these problems will escalate as the value of your home drops.

As far as the roof goes,I like the EDPM,but you need to address the issue
at the gutter where water can back up under the edge of the roofing and
get into your home.
Even the proper insulation and venting procedures may not be 100% cure
for future ice dams.
Get ideas from local roofers who know about sealing that eave so it's
watertight.
oldfrt is offline   Reply With Quote
Old 04-13-2011, 11:24 PM   #11
Member
 
Join Date: Mar 2011
Posts: 59
Rewards Points: 75
Default

Flat roof ice dam and more problems!


Quote:
Originally Posted by Jim F View Post
The gutter could very well be draining right. I could not see any low spots on those pictures. The problem with a winter like the one we just had is that the gutter systems get overwhelmed by the ice buildup (dams). that gutter could have been wall to wall icicles even with a proper slope and a clear downspout.
look at the width of the facia wood follow it down it's low right in front of the window but yes icicles when they melt water backs up. It's the gutter ice is backing up going behind the siding and coming in on the frame of the window
Don Smith is offline   Reply With Quote
Old 04-13-2011, 11:45 PM   #12
Member
 
Join Date: Jan 2007
Posts: 1,796
Rewards Points: 1,018
Default

Flat roof ice dam and more problems!


As I said in a previous post, your best bet is probably to repair what is damaged, and then lay down heat cables both on the low pitch section of the roof and inside the gutter/downspout.

Also, in the process of repairing the damage, consider extending the eaves.

What is directly below the gutter?
handy man88 is offline   Reply With Quote
Old 04-14-2011, 07:13 PM   #13
Newbie
 
Join Date: Apr 2011
Posts: 2
Rewards Points: 10
Default

Flat roof ice dam and more problems!


You need to get them eve's ventilated.
I can see in the pic that you have only roof vents up high on the roof, this is good but you need to get a clear draft going through from the eve to them roof vents and any heat loss you may get will not sit there heating up and melting the snow on your roof.
Detrik is offline   Reply With Quote
Old 04-14-2011, 09:38 PM   #14
Member
 
Join Date: Jan 2007
Posts: 1,796
Rewards Points: 1,018
Default

Flat roof ice dam and more problems!


Quote:
Originally Posted by Detrik View Post
You need to get them eve's ventilated.
I can see in the pic that you have only roof vents up high on the roof, this is good but you need to get a clear draft going through from the eve to them roof vents and any heat loss you may get will not sit there heating up and melting the snow on your roof.
With that low slope roof, the roof framing is probably filled with insulation such that there won't be much ventilation even if you added soffits.
handy man88 is offline   Reply With Quote
Old 04-15-2011, 07:13 PM   #15
Newbie
 
Join Date: Apr 2011
Posts: 2
Rewards Points: 10
Default

Flat roof ice dam and more problems!


Use moore vents, they will push down the insulation.

Advertisement

Detrik is offline   Reply With Quote
Reply


Thread Tools
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





Top of Page | View New Posts