Ice dams are formed by the continuous melting and freezing of snow due to heat escaping from the house or from a backup of frozen slush from the rain gutters the melted water flows under the snow and freezes as it reaches the unheated soffit area at the eaves thus.
Putting down ice on 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.
Cut the membrane into 3 5 m 10 15 ft lengths and re roll loosely.
Whether it is simply functional or shingled with expensive decorative materials the roof of your home is a shield against the elements.
The best defense against ice dams in cold climates is a so called cold roof consisting of high levels of ceiling insulation separated from the roof surface by a free flowing vent space see preventing ice dams page 97 in the printed text best practices guide to residential construction.
Peel back 300 600 mm 1 2 ft of release liner align membrane.
Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface.
Here s how proper installation of grace ice water shield the conventional method.
Ice and shield guard metal flashing or double rolled shingles.
Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros.
What is the best underlayment to protect the valleys in my roof from leaking.
If installed properly this reliable roofing underlayment can save homeowners 18 000 in reroofing costs.
Before you reshingle a roof read our step by step guide for.
This provides added protection against ice dams.
How to install self adhesive roof underlayment.