What size are roof tiles? (2023)

What is the size of concrete roof tiles?

Concrete Roof Tiles

Sometimes called cement roofing tiles, concrete tiles are a mixture of portland cement, sand, water, and sometimes various dyes are used for colour. The standard dimensions of the concrete roof tile are 420 x 330mm and 267 x 168mm, however, this may vary depending on the manufacturer.

Ridge tiles are made in widths ranging between 215mm and 340mm, according to their shape, material and manufacturer. UK manufactured concrete and clay ridge tiles tend to be available in two lengths – 450mm and 300mm. Continental clay ridges have lengths from 330mm to 500mm.

Once the underlay is complete, you need to install timber battens to provide a solid surface for the roof tiles to sit on. The tiles can then be evenly spread across the battens.

On a tiled roof, all the tiles are fixed onto battens with the bottom (lower end) of each tile resting on the top of tile in the row below. At eaves level the last row of tiles (that ends above the gutter) doesn't have a tile or batten to rest on.

Best: 4 mm thick. Medium strong: 5 mm. Heavy: 6 mm. Extra heavy: 9 mm.

How Much Should Roof Tiles Overlap? Your tiles should overlap one another by between 75mm and 100mm, depending upon their size as well as the pitch of your roof. This should mean that the gauge of your roofing battens will be around 32-35cm, measuring from the top of one batten to the top of the one below it.

roof pitches: The material and profile of a tile will determine the pitch it can achieve. Generally concrete tiles have a minimum pitch of 15° and composite panels have a minimum pitch of 10°. Terracotta tiles range between a minimum of 12° and 25° depending on profile.

The vast majority of ridge tiles are fixed to the roof by cementing them in (but note that since 2015 building regulations have changed so that now all roof tiles need to be mechanically fixed even if cemented), though there are some "dry" ridge tile systems available.

How long is a roof ridge tile?

Each Ridge Tile is 1" long. The angled ridge tiles are provided at a standard 90 degree angle.

Concrete tiles are usually around 90 tiles per square, while some clay tiles can range from 80 to 100. Other types of tile may run 160 tiles per square or more.

15 pieces in one bundle.

Roofing felt is usually required under roof tiles to prevent the desk from being exposed, it also may be applied as your roof deck may not lie perfectly straight. A layer of roof felt gives you an even surface to install tiles/shingles.

It's never a good idea to walk on any roof unless you're trained to do so. Even the strongest looking roofs can be very fragile. And the results can be disastrous. The slope on a tiled roof makes it highly dangerous to walk on.

You tile from bottom to top as the tiles lay on top of each other. In the manufacturers info it shows the amount of recommended headlap, thats the amount that they should overlap each other. From that you can work out the quantities needed and from that the weight you will impose on the roof.

Avoid walking on the thick heels of your shoes, which more easily break the tiles. For roof tiles with close curves or waves, place the heel and ball of your foot on the peaks. To prevent too much pressure on a single tile, balance your weight between both of your feet.

If the wind gets stronger the wind uplift force will increase and the amount a tile lifts will increase. There will be a point at which the leverage on the surface of the tile will raise the tile to the point where it will either pull the head off the nail or pull the nail out of the batten.

The nails that hold your tiles or slates in place can eventually rust and wear away, leaving them too weak to hold the tiles. In some cases, tiles can even slip out of place because the wood has weakened. Water damage to roof battens, for instance, means there's less integrity holding onto the tiles.

The typical thickness of roof sheathing is about 7/16-inch, which is just under 1/2-inch.

What size is a standard roof slate?

The most common size being the 500 x 250 mm - a “Countess” in old money. These days simply referred to by its size in metric or imperial measurements, 500x250 mm or 20x10 respectfully. The further north you get the smaller the roof slate tile generally and the greater the over-lap (lap) to ensure a weatherproof roof.

Clay and concrete are by far two of the longest lasting roof tile materials available to buy. With a potential life expectancy of over 100 years, many clay and concrete roof tiles even outlive the property they've been installed on. Slate tiles are another top-level choice in terms of longevity.

Start with a batten at the bottom of the roof, and ensure a tile will extend to the centre of the gutter, and then work your way upwards, installing battens with the calculated distance between them.

Generally, roof tile mechanical fixings are a nail or screw at the tile head and a clip at the tail. BS 5534 allows the use of suitable adhesive as a second fix where it is not possible to use two mechanical fixings.

Roof Tile Installation: Stop Roof Tile Loss with Redland Innofix - YouTube