Flat Roof Meets Pitched Roof Detail

Part 1 a guide to roof construction covers an overview of flat and pitched roofs.

Flat roof meets pitched roof detail.

Click the image for low res preview. According to improve net s online roofing calculator a flat roof is significantly cheaper than a pitched roof. Waterproof membrane to prevent water penetrating the structure and interior of the. Roof ridges and ridge tiles roof hips and hip tiles roof valleys roof verges and lead flashings.

Where a pitched roof abuts the wall at an angle. A flat roof usually consists of the following. Horizontal flashings should provide weathering to a minimum of 75mm above the intersection with the roof. A 900 square foot flat roof in the san francisco area made of concrete tiles costs.

Size up the job. A roof with a monitor. A roof is considered to be flat when it is of a slope of 1 5 o to the horizontal. Armourfix and armourvalley membranes must be installed and extended 60 90 cm up the main roof underneath the shingles in order to assure a waterproof connection.

Where a flat or pitched roof over an enclosed area abuts a wall or a balcony abuts a wall cavity trays should be linked to the flashing to prevent water penetrating into an enclosed area. A v shaped roof resembling an open book. A very important detail is where the flat roof is connecting the pitch roof. Since re felting there s a new gulley where the flat roof abuts the sloping tiled roof previously the tiles on the pitched roof covered the join and water from the pitched roof ran on to the flat roof and safely into guttering now rainwater is running through this gulley and then via a newly created notch in the side edge of the flat roof.

A selection of roof detail drawings including flat roof details pitched roof details mansard roof detail parapet verge ridge and eaves details. Part 3 of the four part guide to roof construction covers pitched roof detail. A raised structure running part or all of the way along the ridge of a double pitched roof with its own roof running parallel with the main roof butterfly roof v roof 7 london roof 8. This collection of 18 articles animations and videos identifies the critical roof flashing areas illustrates durable roof flashing details and shows how to flash roofs right in the real world.

Flat roof construction for residential. To get the most out of it is helpful to also read parts 1 and 2. Click the image for low res preview.