Eaves Slate Roof Construction Detail

Full application and sitework details are given on pages 8 to 22.

Eaves slate roof construction detail.

Fix a rafter spacer tray to provide a clear air path between underlay and insulation. Minimum slate headlap moderate weather this table of slate overlaps and roof angles shows common sizes of roofing slate and the recommended slope for the corresponding slate size. If a sprocketted or bell cast detail is used then eaves courses should be no lower than the minimum recommended roof pitch. The range of tile and slate vents as well as providing ventilation into the roof void they can be used with mechanical extraction in bathrooms or kitchens or used for soil ventilation.

Cad details document name pdf dwg download all cad construction details 37 1 mb 3 4 mb mc01 identification of roof areas 694 kb 167 kb mc01a single layer underlayment 678 kb 302 kb mc01b double layer underlayment 711 kb 322 kb mc02 vent pipe flashing 626 kb 349 kb mc03 valley. Drip edges have two key purposes. General guidance on the most important points to be considered is given below. Direct water away from fascia.

With heavy materials such as cotswold stone slates this has necessitated the cussome detail figure 7 in which the eaves slates are set under the first lath to prevent them tilting over. If your property s roof is in the green moderate part of the uk but you know of prevailing bad winds or weather you may wish to use the other chart instead. Ridges were often constructed using slates rather than ridge tiles or stone. Gable edge projection and drip edge projection can also vary somewhat.

A drip edge is designed to take advantage of those forces and along with gravity direct water into the gutter. Due to cohesion surface tension and other forces water droplets tend to stick to one another and to the surfaces they are on albeit slightly. Fix a plywood board or proprietary tray to provide continuous support to underlay to prevent water retaining troughs. The cant strip is variable in thickness according to the thickness of the slates being installed thicker slates require a thicker cant strip.

The above illustration shows basic installation details for a traditional standard thickness slate roof.