What is the difference between single lap and double lap tiles?
The key difference between single camber and double camber clay tiles is their shape. Single camber tiles are curved in one direction – on the long edge. Double camber tiles are curved in two directions from top to bottom (like single camber tiles), and also from left to right.
What does double lapping mean?
The term ‘double lap’ is applied to the way that the plain tiles are laid on the roof to create an effective barrier to water. This means that at any point of the roof there is at least a double layer of tiles, hence the term ‘double lap’ – at the headlap there are actually three layers of tiles (see below).
What are the 3 most common roofing tiles?
The most common materials used in metal roof tiles are copper, aluminum, zinc and steel. Of these materials, steel and aluminum are the most popular.
Do roof tiles have to be staggered?
The tiles going up the roof are normally directly above each other, there is no need to stagger them as the side joints are automatically sealed by overlaps. The overlap will depend upon the slope of the roof – the steeper the slope, the smaller the overlap required.
How much should roof tile overlap?
This is normally specified with the tile manufacturer and it’s advisable to check how much they say a roof tile should overlap, normally on a smooth faced tile the overlap is 75mm (3″) and on granular or sandfaced tiles its 100mm (4″) however if the roof is shallow pitched, is facing a windy direction or will be prone …
What is a single lapped tile?
Most single lap tiles have a tongue-and-groove joint along the side edges to form a series of interlocking joints. There is a reduction in weight of the overall roof covering compared to double lap tiling, but the batton size will be larger. Single lap tiles should be mechanically fixed with either a clip or nail.
What is the difference between honing and lapping?
What are lapping and honing? Lapping is a sanding or polishing method used to create an accurate finish on a flat or domed surface of a part. Honing is a method of internal grinding used to achieve a precise surface finish and shape on the inside diameter (ID) of a tube, bore, or hole.
What are the different types of lapping?
Although the lapping process is less damaging than grinding, there are two regimes of lapping: free abrasive lapping and fixed abrasive lapping. Free Abrasive Lapping is when abrasive slurry is applied directly to a lapping plate (e.g. cast iron).
What is double lap roof tiling?
Double lap tiling is the traditional covering for pitched roofs, mainly using plain tiles. Each tile has at least two nibs on the underside of its head so it can be hung on support battons that are nailed over the rafters. Generally, unless the roof exposure is high, only every fourth course of tiles is nailed.