Roof slopes between 2 12 and 4 12 can use shingles but require roof application techniques to take into account a greater potential for ice dam water backup.
Ice dam on low slope roof.
This scenario is often the result of a warm attic.
Ice dams prevention ventilation of low slope roofs.
The areas in question are a low slope roof 3 12 pitch east west side of the ridge and a cathedral style roof 8 12 pitch inside the home there is a sloping ceiling that is covered by drywall.
Remove snow from the roof when you notice snow building up on your roof it is advised.
Curved or cracked shingles.
15 felt underlayment as shown in figure 2 3above.
Preventing ice dams on roofs.
If you wish to get rid of ice dams on your roof you must adhere to the following.
If necessary use a long handled garden rake or hoe to push it into position.
15 underlayment as shown.
The lower slope also allows any ice dam that does develop to climb higher up the roof.
Each winter i have to deal with ice damming along 2 sides of the roof no where else.
Ice dams are more likely to occur on roofing systems with low slopes as ventilation is often a issue.
This only occurs when part of your roof warms to above 32 degrees f warm enough to melt the snow while the roof edge remains below freezing.
How should ice and water protector be installed on a roof.
Most likely the first notice you will see of a snow or ice related roof leak will be water dripping from a ceiling or a puddle on the floor.
Water leaks in the attic.
When the snow melts and becomes water it can reach the soffit and refreeze causing ice dams on your roof resulting in the following roofing problems.
Fill the leg of discarded pair of panty hose with a calcium chloride ice melter.
For low slope roofs in cold climates where ice dams and ice dam leaks are likely bliss recommends a double layer of no.
Lay the hose onto the roof so it crosses the ice dam and overhangs the gutter.
Rise of the roof to the horizontal run and is expressed as a fraction.
That s what we found at the home shown at left.
Ice dams are a sign of heat loss in the attic and this lost heat is money you throw out the window.
While there may be a small risk proper ventilation is vital in the prevention of ice dams and the protection of your roofing system.
A 4 12 roof slope means the roof rises 4 feet for every 12 feet of horizontal roof span.
These photos and comments describe the diagnosis and cure of roof ice dam leakage occurring on a low slope epdm covered roof in a new york home.
Damage to the interior walls.
Ice dams may seem harmless at first but they are known to cause thousands of dollars in roof leaks structural damages and repairs of your home.
Ice dams can cause very serious and expensive to fix problems and are usually caused by improper ventilation of your attic space and inadequate insulation of your roof.
