Moisture entering the home from ice dams can lead to the growth of mold and.
Ice problems on roof.
Having a roof rake would help to eliminate the snow.
It will put gutters and downspouts at risk too.
Next snow melts on the warm roof and then freezes on the cold eaves.
Ask this old house general contractor tom silva explains the best ways to keep your roof and gutters free from those dreaded ice dams.
This scenario is often the result of a warm attic.
This photo clearly shows how laying heat cable on a roof edge in a zig zag pattern does not work.
As the warm air beneath the roof heats the shingles and melts the snow on the roof the water flows down the roofline until it reaches the overhanging eave structure where the freezing temperatures cause the water to refreeze.
Ice dams and icicles form when the snow melts runs down your roof and refreezes near the edge.
An ice dam is a hump of ice that forms at the edge of a roof under certain wintertime conditions.
Here s a breakdown of the conditions that lead to the formation of ice dams.
Ice dams happen when ice melts trickles down the roof then freezes again.
Thereby elinmating the ice dams.
See below for a shopp.
An ice water shield is a critical element to prevent water damage to the edges and valleys of your roof.
These dams can tear apart your home so limit them by keeping your roof clear of snow.
Finally ice accumulates along the eaves forming a dam.
An ice dam can damage both your roof and the inside of your home.
First heat collects in the attic and warms the roof except at the eaves.
The problem occurs when the space inside an attic or the underside of the roof deck is above the freezing point.
Effects of ice dams.
Water seepage and melting result in damage to many roof systems which is preventable with the installation of weather watch.
Ice dams are a common sight in northern new england winters and home partners has dealt with quite a few.
I would like you to address all the issues with ice dams and offer sound solutions to those issues.
My point is insulation and air sealing alone don t not stop ice dams they certainly help and save homeowners money yes they do.
An ice dam is a ridge of ice that forms at the edge of a roof and prevents melting snow water from draining off the roof.
If dams are a serious threat to your roof the problem is usually due to poor ventilation.
Stop ice dams with a cold roof.
