Roof Temperatures In Summer

Unshaded roofs are at particular risk.

Roof temperatures in summer.

Likely resultant temperatures inside rooftop raceway unloaded exposed to direct sunlight in accordance with table 315 b 3 c. Department of energy the temperature in your attic in the height of the summer can vary by up to 50 degrees based on what material you choose for your roof. An average of the 2 ashrae design temperatures for each location for june through august n. A good roof pitch would be atleast 30 degrees although traditional vernacular samples may go as high as 45 degrees which i think is better.

Avoid roofing in temperatures above 80 degrees f to eliminate these issues. Why would it be much different with a roof shingle. At these temperatures asphalt shingles can melt. In the summer of 2000 they studied this very issue.

Greater than inch and up to 3 inches above roof. An unshaded roof can reach temperatures of as much as 65 to 90 c. These types of roofs are sure to keep your home nice and cool even on the hottest days of summer. Though these materials often cost a bit more upfront if you re looking for energy savings that s what you ll get.

This also speeds up the damaging effect of the uv rays and causes other problems. According to the u s. On the roof and up to inch above roof. Ideal temperature 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.

In most cases a cool roof will stay at least 50 f cooler than a non cool roof of the same color and construction. Measured and calclrlated heat flow for a clolrdy day 3 april follo vi g a day with fairly clolrdy conditioirs. Your roof bears the brunt of the sun s force and is exposed to a lot of heat during the summer. A comparison of hourly values given in figures 3 and 4 for cloudy and clear days respectively indicates a greater discrepancy for clear days.

Up to 68 degrees cooler than black roofs. A roof without shade might get up to 160 degrees f when the outside air temperature is only 90 degrees. 138 145 but feels hotter to the touch than a black roof. No pebble protection by august the roof had more blisters and ripples than a man could count.

I have a roof with a 2 12 pitch aka hot mop roofing. Different sources report different temperatures. It layed perfectly flat prior to open cell foam being installed against the underside.