Green Or Reflectiev Roofs

After selecting to use a green roof or cool roof the roofing contractor must look at the pros and cons of each in order to decide which would be best for the property.

Green or reflectiev roofs.

The primary reasons for using this type of roof include managing storm water and enjoying a rooftop open space. Green building council and has been mandated by government officials in chicago new york seattle and philadelphia. This means the color does not significantly increase or decrease the temperature of the home. They can sustain shrubs trees walkways and benches with their complex structural support irrigation drainage and root protection layers.

Green roofs are ideal for urban buildings with flat or shallow pit roofs and can include anything from basic plant cover to a garden. It has become a leed leadership in energy and environmental design standard of the u s. White or reflective roofs have been in use for the past 15 years. Cool roofs reflect sunlight and heat back into the atmosphere while green roofs help absorb the sunlight and heat before it can enter the building.

A cool roof prevents heat absorption by reflecting the sun s heat and then emitting its radiation back into the atmosphere. The foot or more of growing medium needed for an intensive green roof creates a load of 80 150 pounds 36 68 kilograms per square foot. But even that treatment doesn t solve all the problems. To improve the green qualities of these roofs consumers can request that they be treated with reflective pigments.

Black jack elasto kool 1000 5 gallon elastomeric reflective roof coating 10 year limited warranty item 139941. Green roofs may not reflect as much as a cool roof but do have other benefits such as evapotranspiration which cools the plants and the immediate area around the plants aiding in lowering rooftop temperatures but increasing humidity naturally. By doing this cool roofs allow for a more comfortable and controlled indoor environment. Commonly referred to as cool roofing it has received a stamp of approval from the state of california which has adopted its use in its building codes.

Although cool roofing is one of the most significant green technologies today it is not a new concept. For pricing and availability. The solar reflectance of green roofs varies depending on the plant types generally 0 3 0 5. A bumpy roof reflects light in many directions and with shingles you ve got bumps all over.

Intensive green roofs are essentially elevated parks. Green roofs are an important component in an overall strategy to offset the negative impacts of uhis and enhance the value of green building practices for occupants and surrounding citizens.