All About Roofers Gazette Digital

How to cool your roof

Feb 11

How to cool your roof


A typical black roof's surface temperature can reach more than 50 degrees Fahrenheit (10° Celsius) higher than the ambient air temperature on a bright, hot day. It is not surprising that the air temperature in large cities with blocks upon blocks of heat-absorbing rooftops can be six to eight degrees warmer than the surrounding area.


Are you ready to transform your hot roof with a roofing Katy Tx and save energy, money, and the environment? Keep reading for ten ways to cool your roof.


6. Spread the modified bitumen onto the ground.


The cool roof requirements are determined by the roof's slope.

Cool roofs can be fitted on any type of roof. Some roofs can also be modified to become cool roofs by adding the appropriate coatings or materials.


To determine the slope of your roof, you can choose which roofing material is best for your structure or home. Then, select the cool roof product that meets your budget and architectural style.


Modified bitumen roofing is a popular cool roof option for flat and low-sloped roofs. Modified bitumen roofing uses rubberized asphalt sheets and is held together by rolled reinforcing fabrics. The roof deck is then attached with hot asphalt or cool adhesive.


5. Choose a membrane that has only one ply.


Another type of cool roofing material is the single-ply membrane. This is for low-slope roofs. Single-ply membranes are made from prefabricated vinyl sheets or plastic with solar reflective coatings. The sheets are then rolled onto the roof deck, and secured with a combination of chemical adhesives, mechanical fasteners, or ballast like gravel or pavers. Single-ply membranes are ideal for cool roof properties. They do not require additional coatings.


4. Strengthen it


Built-up roofing (BUR) is the traditional tar and gravel roof. Because it is economical, easy to install, and fast to repair, it is one of the most preferred roofing systems for low-sloped and flat roofs. Layers of gravel, mineral, or aggregate rock are layered on top of asphalt sheets or bitumen. Then, a protective layer is added of gravel, mineral, or aggregate rock.


3. Roof Cooling Costs


Cool built-up roofing systems cost approximately $1.20 to 2.15 per square foot. This is almost the same price as traditional built-up roofing systems. However, the third option of applying coatings to existing surfaces is slightly more costly -- $.80 to 1.50 per square foot more


2. Cool down with a new coat


Cool roof coatings are best suited for low-slope roofs that are in good condition [source: Environmental Protection Agency]. There are two types of cementitious coatings: those that contain concrete or ceramic particles and elastomeric coatings. These contain extra polymers that make them more brittle and sticky to building surfaces.


Both cementitious and elastic coatings can improve the solar reflectivity of the roof's surface. Elastomeric coatings act as a watertight barrier. Cementitious coatings are used over roofing materials that have been fully waterproofed.


1. Choose the perfect shingle


To reflect sunlight better on steep-sloped roofs, standard fiberglass asphalt shingles may be replaced with cool asphalt.


To reflect sunlight better on steep-sloped roofs, standard fiberglass asphalt shingles may be replaced with cool asphalt.


Cool asphalt shingles made of standard fiberglass can be replaced by cool asphalt shingles that have specially coated reflective granules. This will help them reflect more sunlight onto steep-sloped roofs such as those found on American homes. To improve solar reflectivity, coatings can be applied to shingles made of metal, wood, or polymer.



Katy Roof Repair

Katy, Texas

(213) 554 1890