When you contact us, our representative will guide you as to how many DaVinci Select Shake tiles you will need to cover your roofing project. However, the general rule is that there are 20 tiles to a square metre, so calculate 1 pack of DaVinci Select Shake tiles (22 tiles) will allow coverage, including 10% wastage, per square metre*.
* The minimum recommended pitch and lap may be influenced by special circumstances, please contact our technical department for advice.
Note: Advice from our technical department should also be sought when installing on high buildings and/or in exceptionally windy areas.
EXPOSURE
The “exposure” of DaVinci Select Shake is determined by the configuration or pattern that you wish to achieve, as the tiles can be fitted in either standard straight tile effect (as you would see in a roofing slate with uniform rows) or as a staggered tile effect (random fitment, as you would sometimes see on a natural cedar roof).
The minimum tile exposure for a roof utilising the straight tile effect is 9″ (230mm), and the minimum tile exposure for a roof utilising the staggered tile effect is 10″ (254mm). Note that these are the minimum tile exposure measurements and tiles can be fitted less (but not more) than this, especially when utilising the staggered tile effect where you would want a more random pattern creating.
Note that the exposure on DaVinci Select Shake has to be manually set, there is no embossed “gauge” present on the tile like our TapcoSlate Classic product. The gaps between each tile should also be manually set to 10mm.
SQUARE METRES
A square metre is a metric measurement of area. If the area involved in your roofing project is square or a rectangular, measure the length and width of the area, using a metric tape measure or a meter stick. Multiply the length, in metres, times the width, in metres. That will give you the area of the square or rectangle in square metres.
If the area involved is not square or rectangular, sketch the area to scale on a piece of graph paper. You can make sure that it is to scale by allowing each division on the grid to equal a certain number of metres. Break up the sketch into rectangles, squares, triangles, and even circles, if necessary. Apply the appropriate metre-based formulas to each shape on the graph to determine the area of each shape in square metres. Multiply length times width for squares and rectangles. Multiply base times height and divide by two for triangles. Measure from the centre of a circle to its outer edge to find the radius; then multiply the radius times itself and multiply that figure by 3.14, which is “pi.” Add the areas of each shape to find the square metres of the entire area.
To recap, if your roof is 8 metres high by 10 metres long, this equals 80 square metres, times this by 2 sides of the roof equals 160 square metres in total.
SELECT SHAKE TILES CALCULATION
If your roof is 160 square metres (as above), you will fit 20 DaVinci Select Shake tiles to every square metre but calculated out at 1 bundle (22 tiles) per square meter to include 10% wastage. This would mean that you would need 160 bundles to complete your project.
Please note that you will also need a starter or eaves course. DaVinci Select Shake uses a dedicated Starter Tile (see fixing instructions), 3.5 tiles per linear metre, so in this example you would also need to cover 2 x 10m = 20 linear metres, times 3.5 tiles per metre = 70 Select Shake Starter Tiles.
SELECT SHAKE RIDGE & HIP CAPS CALCULATION
DaVinci Select Shake Ridge & Hip Caps are universal use, to fit up to a maximum 45 degree pitch. Exposure of each cap to measure no less than 12″ (305mm), which calculates to a minimum 3.3 Caps per linear metre of ridge or hips. In the above, simple example with just a 10 metre ridge to cover, you would need 10 x 3.3 = 33 Select Shake Ridge & Hip Caps.
Note that the exposure on the DaVinci Select Shake Ridge & Hip Caps has to be manually measured, there is no embossed “gauge” present on the cap like our TapcoSlate Classic Ridge & Hip Cap product.
Please Note: The details on this page are for guidance only, and Westlake Tapco Europe Limited will not be held responsible for any incorrect measurements undertaken by you or your architect or roofing contractor. It is your sole responsibility to ensure that any measurements and quantities ordered are correct.
