You can install metal valley flashing but it is common to simply apply an 18 inch wide strip of roll roofing instead.
Installing roll roofing in cold weather.
Install drip edge flashings roofing felt and wsu if needed.
This aluminum flashing protects the edges of the roof sheathing from water.
Cut the sections of flashing with tin snips as needed and nail.
Roll out the roofing sheets and lay them flat on the ground.
Nails and adhesives are used to install rubber roofs and as we mentioned earlier freezing temperatures can hinder the performance of the nail gun.
Set it in a bed of roofing cement smooth out any creases and drive nails near the edges.
Place bricks in the corner to keep it down and reduce resistance later.
According to roofing construction estimating by daniel benn atcheson the best temperatures to install asphalt shingles is between 40 and 85 degrees f 4 and 26 degrees c.
To get the best results and to prevent breakage or softening of materials install roofing when the temperature is between 50 and 60 degrees f if at all possible.
Instead of nailing it down you.
If you re doing this in the winter roll your roofing sheets out in a garage.
Cold weather damages roofing sheets.
If the roofing job needs to be done immediately due to leaks or wind damage lay a tarp over the damaged section of the roof or install temporary roofing.
Install peel and stick roofing in a similar manner.
Install a drip edge around the perimeter of the roof.
Install roll roofing when the temperature is at least 50 degrees fahrenheit to keep the material from cracking.
Installing rubber roofs in cold weather in an ideal world rubber roofs shouldn t be installed when the temperature outside is below freezing.