ice and water shield
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Storm and Ice Shield helps prevent Ice dams from doing damage to the home.
Without proper venting and insulation your going to have ice dams, and shorten the life of the shingles.
Storm and Ice Shield helps prevent Ice dams from doing damage to the home.
Without proper venting and insulation your going to have ice dams, and shorten the life of the shingles.
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16,386 Posts
It isn't worth anything to me unless the installing contractor will guarantee a 100 percent seal for the life of the product. With one small area failing to seal it becomes no better than 30 lb. felt.
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A lot of new homes built these days with 2 climate zones have the air handler for the upper floor located in the attic, so even with good ventilation, the attic will get warm when the furnace is turned on.
I think that its always good to install ice dams material at the eaves, the rakes, the valleys, and sometimes the ridge, as it seals against wind blown rain if installed correctly. If you go back in the roofing posts I describe what ice dams is and how it occurs. Educate yourself. It can be installed in low temperature but you want to keep it warm prior to installation. There are reasons to not install your roof in really cold weather though. Including cracking and rupturing of the fiberglass mat.
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Has anyone installed ice and water shield that covers all their wood sheathing instead of felt?
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981 Posts
Yes,,,,and I probably will not answer the phone if I know they are wanting a new roof. :laughing:
And that is because the entire house will need to be redecked and the estimate for that will be astronomical. :whistling2:
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1,354 Posts
A roof is usually done first 6 feet in ice and water. Also in dams then upgrade to a synthetic underlayment for the rest of roof. I like Titanium udl 30. You should have proper intake at sofits and proper exhaust on roof. This will extend the life of the roof. I wouldn't recommend winter roofing. You want a good sun to hit the roof to seal those shingles down.. Concerning insulation. Spray foam is best on walls. Roof sheathing i like 1/2 inch cdx plywood.
not for the entire decking but for say the first couple squares at the drip edge when we got the new roof done. i have a huge thread in here about this
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After a roof has ice & water shield installed on all of the sheathing, why would the homeowner ever need a new roof? Maybe just new shingles. Thus, no new decking would ever be required.
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The shingles normally fuse to the I/W and the I/W to the decking.
Makes removal about impossible.
Removal is easier, faster, and probably more cost effective when it comes to pulling the whole roof deck up sheet by sheet.
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604 Posts
Yes and we do not even get freezing temps here. A lot of it is custom homes and or PW jobs that have it spec'd.
You can install I&W in cold temps within reason (below 0 Fahrenheit is too cold to be doing any roof work though). It will bond to the roof once it gets some direct sunlight on it. For a north-facing slope, that won't be until spring though. Same thing with the shingles, they need heat to bond, and as was already mentioned they are much more fragile in cold temps so they could get damaged walking around on them. So if you get some strong winds before they bond, you could end up with some damage.
So given the choice, it would be wiser to wait until warmer temps.
I installed this roof with I&W shield back in the 80s during December in Wisconsin and recently did a tear-off. This was south-facing, but I also had a north-facing roof on the front of my house that I did at the same time. Temps were probably in the 20s and 30s F , I consider that moderate winter temps.
If you're hiring a contractor, you also need to consider the realities that a person working outside in extreme temps may not give you the same level of quality he would in more reasonable temps.
So given the choice, it would be wiser to wait until warmer temps.
I installed this roof with I&W shield back in the 80s during December in Wisconsin and recently did a tear-off. This was south-facing, but I also had a north-facing roof on the front of my house that I did at the same time. Temps were probably in the 20s and 30s F , I consider that moderate winter temps.
If you're hiring a contractor, you also need to consider the realities that a person working outside in extreme temps may not give you the same level of quality he would in more reasonable temps.
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Damaging hail.I roofed an apartment complex in STL that had 3 courses of Ice and Water and along the rakes.We replaced over 1000 sheets of plywood all containing the Ice and water and the top of the shingles because the tabs would pull.
There is a way that I have seen hacks get by without pulling the plywood covered with Ice and Water,,,they cal, it "Cut-tabbing" they cut the tabs and felt and roof it.
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Why would the I&W shield bond with the shingles since the peel/sticky side contacts the sheathing. I didn't know the top side is sticky also.
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They melt together. Plan on removing all the wood where it's been used. It only adds a few thousand extra to each job.
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