A cool roof is a roof that has been designed to absorb less heat and reflect more sunlight than a standard roof.
Ro roofs let off heat andmoisture.
Problems with the underlying decking don t see the light of day literally.
Some roofing materials come in cool roof options and others can be altered with a highly reflective type of paint or coating to absorb less heat.
Roof overs shorten the lifetime of new shingles because heat and moisture build up under them.
Five of the main winter roof damage problems that homeowners should be aware of are listed below along with some advice on how to best manage them.
A cool roof is a roof designed to maintain a lower surface temperature in bright sunshine than a traditional roof source.
Look at your eaves and roof.
If it s airtight and well insulated the radiant barrier roof deck is irrelevant.
Department of energy the surface of a cool roof reflects more sunlight and releases more heat than a so called hot or dark roof.
Sealed attics trap excessive heat and moisture which can lead to reduced shingle life.
Good ventilation allows the heat and moisture to escape.
Today s metal roofing materials are durable and lightweight and they come in a host of designer colors.
While the term cool roof is sometimes used to describe any roofing surface that is cooler than a standard rooftop green certification.
If you don t see any attic vents on the roof or in the eaves you need to add some.
Here are four signs of an unventilated or under ventilated attic.
That s why it s important to have a tear off that removes the shingles and underlying protective membrane.
We ll add a vapor barrier so the moist air does not flow up through the insulation and condense on the roof.
And a roof over can void the warranty on the shingles.
How to ventilate an attic with a metal roof.
And the extra heat is not just a summer concern come winter hot attic air can melt snow on the roof.
Winter can be especially harsh on a house s roof and it s almost never a good idea to simply wait for spring before addressing the issues that the presence of snow and ice on your roof can cause.
On sunny days it doesn t let much of the solar heat through but it will also keep heat that s already in the attic from escaping.
In either case though if you have an unconditioned attic your barrier against heat loss from the home should be at the ceiling level.
When summer s sun beats down the.
That keeps your attic dry and reduces ice dams.
Flat and low slope roof designs to avoid moisture condensation problems flat roofs call up a whole new breed of building moisture problems how to avoid moisture traps under flat roofs avoid mold rot caused by moisture trapped under un vented flat roofs questions answers about the cause cure prevention of moisture problems in flat roofs and similarly hard to ventilate structures.
Traditionally we ve insulated the roof panel to try and keep the temperature on the panel from reaching the dew point.
