How much should a clay tile roof overlap?

3-inch overlap
Interlocking Clay Roofing Tiles© Interlocking clay roof tiles (photo at left) are either flat or low profile and are laid in a single thickness with a 3-inch overlap.

What is the minimum slope for a clay tile roof?

The International Residential Code (IRC) specifies a minimum 4/12 pitch (4 inches of vertical rise for every 12 inches of horizontal run) for a clay or concrete tile roof, except that a pitch as low as 2-1/2/12 is allowed when two layers of underlayment are applied.

What are clay roof tiles called?

As stated before, clay tiles are also called Spanish tile roofs due to their use in hot climates such as Spain and Latin America. Concrete, on the other hand, can handle colder temperatures without issue, making them safe to use in virtually any climate.

How are clay roof tiles attached?

Fasteners for clay tile roofs: clay tiles are secured to the roof deck using wire, special clips, concrete, ballast stones, or metal clips. Tiles are secured loosely – overly-tight wires or nails are likely to break the tile.

Why do roof tiles overlap?

If you are less than 14″ (for the 17″ tile) or less your roof has proper overlap. Over exposing tile is a classic way for roofers to cheat homeowners by installing less than the correct amount of material on the roof which also saves time. It is also not easily discernible to the “non-roofer” homeowner.

What is the lowest pitch for a tile roof?

Clay and concrete tiles The minimum slope allowed for tiles is 2½:12. A double underlayment must be provided when the slope is between 2½:12 inches and 4:12. Tile roofs that are steeper than 4:12 only require one layer of underlayment.

What is the best pitch for a roof?

Conventional slope roofs, with a pitch between 4/12 and 9/12, are the most common in residential work. Roofs with a pitch exceeding 9/12 (37 degrees) are termed steep slope roofs. In commercial work, low-slope roofs (with a pitch between 2/12 and 4/12) are most common.

How is roof tiles made?

Tiles are made by extruding the sand cement mortar onto a metal support pallet that gives the tiles their underside detail. The top surface of the tile is normally smooth, the profile being defined by the shape of the pallet and the extruder itself. This design is critical to maintaining the properties of the tile.

How is terracotta tiles made?

What are Terracotta tiles made of? The tiles are made if clay, which is red in colour due to the clay’s high iron content. Manufacturers mould this material into different shapes. The clay is heated in a kiln, reaching temperatures of up to 1,000 degrees Fahrenheit.

How are roof tiles held in place?

Most roof tiles are fixed in place using nails. Whether it’s aluminium, steel or copper, the nails attach tiles to roof battens, which are laid horizontally across the surface of your roof.