Slate Roof Tile Overlap

Minimum pitch for slate roof when considering the minimum pitch for a slated roof it is necessary to establish the exposure of the site the length of rafter and the height of the building.

Slate roof tile overlap.

When the head of a slate is overlapped by the slate two courses above it that s called headlap that s the critical overlap on a slate roof figure 2. It s hard to beat mother nature but davinci has done it. The top part of each slate is covered by two slates the centre of the slate of the next row and the lower part of the slate above that. The fairly cheap and common shingle roofs that many people have are quite light.

Davinci slate delivers on that promise with its astonishing versatility. Weight of slates kg area of roof m 2 slate coverage 1000 therefore the total weight 1235 1000 150 23 9 4427 kg. While it s a more costly option due to the processes and materials that go into its manufacturing this versatile slate can be used on pitched roofs at 15. If you are transitioning from a light roof to a tile roof the weight difference will be substantial.

The recommendations shown above are based on a maximum height to eave of 12m and a maximum rafter length of 9m in moderate exposure and 6m in severe exposure. Setting out up the roof gauge set the first batten at eaves to allow the tails of the eaves course tiles to overhang the fascia by 40 to 45mm ie. The total weight of slates on roof can be found from the formula. Set the last batten at the ridge so that the ridge tiles will overlap the top course of tiles by at least 75mm.

Just short of the centre of the gutter. The overlap will depend upon the slope of the roof the steeper the slope the smaller the overlap required. Roof battens and gauge the gauge is the space between the roof battens this will set the overlap of your chosen slate in most cases. Some homes were created with the promise of a slate roof in mind.

A factor which can vastly change the price of a new roof or improvements to an existing roof is the number of tiles used. This layout gives a double lap covering i e. For a relatively average house with a 1 500 square foot roof the total of underlayment and tiles will equal something approaching 8 tons in weight. The redland cambrian grey slate is a good example of man made slate as it is composed of 60 of natural slate the slate also comes with interlocking ability.

Our tiles are engineered to be lighter to resist impact and to maintain their color longer. Headlap is what keeps the water from penetrating through the roof. Before starting work it s important to know the dimensions of the roof and the type of tile you will be using.