Home improvement

Green Roofing Systems: An Overview

Green roofs are unique, as they can be realised using various types of roofing systems. Not only can you install this living roof on constructions made of wood, but it can also be included on reinforced concrete decks or metal sheeting. This waterproof construction is designed to feature a proper load-bearing capacity.

Protecting the Roof against Roots

However, when a green roof is installed, the property owner must also consider how the waterproofing can be affected by the upgrade. Roots can damage the roof construction if no protective measures are taken at the time of installation. So, if waterproofing is not resistant to roots, an extra root barrier must be installed. In addition to the surface of the roof, the perimeters, upstands, roof edges, and joints also need safeguarding against roots.

Roofs That Allow for a Green Roof Design

According to roofers in Kent, you can add a green roof on a traditional flat roof design as well as on barrel roofs, saddle roofs, and shed roofs. Any technical precautions against erosion are only needed for roof slopes that are more than 10 degrees. Any roof that features at least a 45 degree slope is not considered viable for a green roof design. Roofs that have virtually no slope must be established so that water retention does not become an issue. Therefore, drainage arrangements must be included in the upgrade.

All types of green roof systems are able to be installed if a roof covers areas that are not heated. Therefore, a green roof system build-up is possible over garages or porches. If a roof is not ventilated, several green roofs can be installed. In order to facilitate this process, a vapour barrier should be incorporated into the plans.

Ventilated roof systems, also known as cold roofs, will permit the inclusion of low-weight green roof designs. The cooling effect produced by the roof allows the air to flow between the tiers of the roofing materials.

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