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.
Ice and water shield entire roof cost.
Ice and water shield the whole roof.
Grip rite grip rite 1 1 4 in.
Smooth galvanized coil roofing nails 7200 pack 26 98.
Ice and water shield on the entire roof deck.
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.
Roll self adhered roofing underlayment 225 sq.
But it costs the customer more money without adding any real value and has the potential to create long term durability problems.
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.
Gaf quickstart 33 lin.
Cons of installing ice and water shield on your roof.
One roofer said i need an ice water shield on the roof adding that he would put the shield over the asphalt shingles.
Ice water shield acts as a vapor suppressor so it not only keeps the water out but also keeps the moisture in.
Grace ice and water shield 36 in.
Stephen eggerman posted in general questions on january 2 2011 11 03am i see this happening in northern new hampshire.
The arguement that oh i would hate to be the next guy having to remove the ice and water shield couldn t you just remove the shingles leave the ice and water down and then put new ice and water on top of the old.