Flat Roof Garage Addition

Considering a roof garden.

Flat roof garage addition. Frankly it s easy to turn it into habitable space by adding a heating installation and proper insulation to minimize the cost. Slope it to 10 degrees it s flat as long as it is less than 15 degrees and slope upward to the garden for a more expansive view and a roomier feel inside. Hot tar and gravel. However flat roofs have other advantages.

Also known as the built up roof bur this type of flat roof features three or more layers of waterproof material mixed in an alternating fashion with hot tar and a layer of smooth stone like gravel. A 50mm air gap must be left above the insulation and allowance for venting must be made at roof perimeters. If your home s design is modular more a collection of boxes or right angled shapes giving it a flat roof keeps a consistent eye line. Image via behm design.

The plan is simple and quite cheap. Making your roof flat for instance maximises the available upstairs space. One design idea is to slope the roof more than the usual 1 5 degrees. Slope savvy flat roofs are not completely flat.

The steels or rsj s rolled steel joists are often built into one or both walls to give added stability to the roof structure. On a basic level flat roof construction comes in the form of roofing timbers or joists as they are more commonly known or steels that are laid across two uprights walls in most cases. This approach uses insulation with no air gap either immediately above or below the roof deck. 1 car garage with flat roof.

A vapour control layer must be used below the insulation. This option avoids the requirement to ventilate the roof. From a structural point of view the existing garage walls and foundation footings will need to be able to accommodate the new load and your garage ceiling joists will usually have to be either replaced or added to in order to handle the new live loads. At a first glance you might confuse this garage with a house.

Instead they have a slight slope to enable easy drainage of rainwater. Expect to pay at least 22 000 for a 384 sq. The choice is yours we ve seen some beautiful conversions using decking patio slabs porcelain tiles and pebble borders.