They will also become more difficult to cut.
How to shingle a roof in the winter.
Set the first shingle of the second row back a half tab 6 inches 17 centimeters from the edge of first shingle on the first row and so that the bottom of its tabs just touches the tops of the cutout slots on the shingle below.
Lay the second row of shingles.
Every tab should be sealed with one or two dabs roughly 1 inch in diameter of asphalt roofing cement.
The temperature of the shingles and humidity in the air lines can affect how the pneumatic guns drive the nails so the pressure setting for warm weather may.
Several crucial perimeters need to be followed before installing a shingle roof in the winter.
The first challenge to winter roofing with asphalt shingles is the shingles themselves.
Secure the horizontal flange to the roof.
If an installer pushes the envelope the shingles may never sea.
Nail metal flashing called drip edge along the bottom edge of the roof deck near the gutters.
Nails and nail guns.
The shingles will lose some flexibility in the cold.
Nail guns have been known to jam more frequently in cold temperatures.
The tar strip needs to be about 60f to activate.
In the winter a dab of roofing cement or tar should be added to each shingle to bond them together until the tar strip is activated in warmer weather.
Eaves protector membranes and roll roofing.
Use sticky back ice and water shield as underlayment where ice dams or leaf and twig dams are likely to build up and at.
This 1 2 tab has to be cut off where it hangs off the left edge of the gable roof.
So if it is warm outside after installation a seal will be activated acting as an obstacle protecting the roof from any water ice or snow going under the shingles.
Make sure that the tab of the shingle in the second course will cover it completely.
In the winter time a professional roofing contractor may choose to hand seal the shingles with an approved asphalt roofing cement or other adhesive that s provided by the manufacturer.
Asphalt shingles have a seal between them designed to firmly bind and secure the shingles together when exposed to sun and warm temperatures.