You just dont need it. Its like buying a car and adding two sets of bumpers and an extra set of airbags.
Xactimate Line Item Of The Day Ice And Water Shield Rfg Iws Standard Calculation Eave 6 Val 3 1507 2 8 2 Ice Barrier Ice Dams Fairborn Shield
I floated this idea to roofer 2 he said terrible idea.
Ice And Water Shield On Entire Roof. Ice and water shield is a great product that can be used in spots to protect the most vulnerable areas of your roof or as a whole-roof underlayment to protect from ice dams water dams storms and leaking in any area of the country and any weather. Further up seems like a waste of time and money imho. You might have some moistureheatcooling issues causing more ice dams if you cover the entire roof as all Ice Water shield is considered a moisture barrier.
What Is Ice Water Shield. I still like the method and still use it on roofs in. Ice and water shield is a self-adhering waterproofing underlayment that is used in roofing to help prevent damage caused by ice dams and wind driven rain.
Ice water shield acts as a vapor suppressor so it not only keeps. If hes in a freeze zone you could run two courses along the eave 70 up to make sure ice dams dont penetrate the roof deck. Roofers who have to make repairs in 20 years arent going to like it.
Cons of installing ice and water shield on your roof. Does a metal roof need underlayment. Ice and water shield is designed to stop Ice dams so I think using it on the first three feet of the roof is a good idea.
One person can install long lengths of ice and water shield to the roof however it is easier for two people to install especially with some new installatio. It is also commonly applied in the valleys of a house as well as around any roof protrusions including. His quote came back significantly higher though.
Im not in favor of covering the entire roof with Ice Water Shield unless there is a good reason to do so -- some unusual problem that you are trying to address. The only real negatives of covering your entire roof with ice water shield are 1 cost and 2 potential ventilation problems which are very rare. Certainly most roofs dont need it.
One quote specifies 6 ft metshield high temp ice and water shield on bottom edges valleys and penetrations high temp synthetic underlayment for the rest. Also referred to as an ice and water protector an ice and water shield is a self-adhesive waterproofing roof underlayment that acts as a shield against water and ice damage. Ice and water protectors sometimes called ice and snow shields in cold climates are made with polymer-modified bitumen.
For a better roof how about using one of the newer roofing underlayments. Ice and Water shield is a peel and stick product that adheres directly to the roof deck. This quote is for mechanically seamed 24ga.
I grew up in the upper Midwest and we always use ice and water shield from the edge of the roof eaves to about 2-4 feet inside the top plate. Ice and water protector sometimes also referred to as ice and water shield is a waterproof roof underlayment membrane developed to protect vulnerable areas on a roof from ice and water damage. Not only will it stick better on the bare sheathing but it will present a more neat appearance.
The simple answer is yes your roof does need an underlayment. Ice and water shield is a self-adhering waterproofing underlayment that is used in roofing to help prevent damage caused by ice dams and wind driven rain. An Ice.
We also use it on all valleys and around all perforations in the roof. Unlike conventional asphalt felt Ice Water Shield is hard to remove. The other quote said its better to do the ice and water shield on the entire roof.
If the whole roof is ice and water shield itll kill the roofs breathability and thatll send the surface temp way up and that extra heat may lead to the new shingles having. Putting ice water shield on your entire roof is like wearing pants with an elastic waist band and adding a belt and a pair of suspenders. Will ice and water shield stick to shingles.
Ice water shield is not a replacement for proper roofing techniques. The roof isnt that large and it has a soffit and ridge vent system and for a small extra change do it. One roofer said I need an ice water shield on the roof adding that he would put the shield over the asphalt shingles.
Water and Ice Shield on entire roof bad idea. It forms a water-proof barrier where ice most often build up on the eaves edge. In fact a 3 strip of self-adhering membrane at the eaves can be potentially worse than full coverage since a roofing leak above the eave membrane can saturate roof decking underneath the membrane as absorbed water is redistributed within the sheathing where it may become trapped long enough with sun beating on it to initiate and nurture mold or decay organism growth.
I am putting on a new roof and got two estimates about equal in price. If an ice dam occurs on your roof and water backs up under the shingles it will seep down into your home through the nail holes holding the shingles on and into your attic. Its also made of modified bitumen slip-resistant which provides a watertight seal around the shingles and around roofing nail penetrations.
Ice water shield is a thick sticky-back underlayment also known as felt paper that will adhere to your roof deck and prevent water from seeping into your home if it gets under your shingles.
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