This blog post explains the key factors that determine how many roof tiles are required per square metre when re-roofing or building a new roof.
With handy tile calculator tips and manufacturer guidelines, you’ll learn how to accurately estimate the quantity of tiles needed for your roofing project.
How Many Roof Tiles Per M2?
To calculate the number of roof tiles per m2, you’ll need to know the dimensions of your roof and the type/size of tile you are using.
On average, concrete and clay tiles require 60-90 tiles per m2. Slate tiles need around 13 per m2.
Use an online roof tile calculator for the most accurate estimate based on your specific project details.
- Concrete/clay tiles need 60-90 tiles per m2 on average
- Slate tiles require around 13 per m2
- Use a roof tile calculator for an accurate estimate
Having an accurate estimate of how many roof tiles you need per m2 is crucial for ordering the right quantity of materials.
Factors like tile type, size, and manufacturer recommendations impact the number of tiles per square metre.
In our experience, using a roof tile calculator tailored to your specific project provides the most precise estimate so you can avoid ordering too few or too many tiles.
Considering all the variables is key to determining the right quantity of roof tiles per m2.
How Many Roof Tiles Are Needed Per Square Metre?
The number of roof tiles needed per square metre depends on several factors:
- Tile-type – Concrete, clay, slate, and metal tiles all have different sizes, shapes, and covering capacities.
- Tile size – Larger tiles require fewer pieces per m2. Smaller tiles need more.
- Roof pitch – Steeper pitches require more overlap between courses, using more tiles.
- Headlap – The overlap between tiles in the same course. More headlap uses more tiles.
- Roof features – Valleys, hips, and ridges use more customized tiles.
As a general guideline:
- Concrete tiles need about 40-50 tiles per m2
- Clay tiles require 60-70 tiles per m2
- Natural slate needs 13-26 per m2 depending on slate size
- Metal tiles can need as few as 8 per m2
When estimating how many roof tiles you need, consult the manufacturer’s coverage chart for your specific tile. Their guidance takes into account the tile dimensions, headlap, and roof pitch.
Input your measurements into a roof tile calculator to determine the number of tiles required. Don’t forget to account for wastage, extra tiles for roof features, and a safety margin for breakages.
Factors Influencing the Number of Roof Tiles
When calculating how many roof tiles you need per square metre, consider these key factors:
- Tile profile – Tiles with interlocking designs often require fewer pieces per m2.
- Tile dimensions – Larger tiles cover more area, using fewer per m2.
- Tile thickness – Thicker tiles are heavier, requiring stronger roof support.
- Roof pitch – Steep pitches need greater overlap and more tiles.
- Batten spacing – Wider spacing allows fewer tiles per m2.
- Headlap – More overlap between courses uses more tiles.
- Roof layout – Complex shapes require more customized tiles.
- Wastage – Account for breakages and off-cuts by adding extra.
Consult manufacturer guidelines for your chosen tile, as their recommendations account for tile size, headlap, and pitch. Use a roof tile calculator to determine quantities based on your specific measurements.
Remember, it’s better to overestimate than run short. Build in a safety margin of 5-10% extra tiles for waste and replacements.
Tile Types and Tile Sizes
When figuring out how many roof tiles you need per square metre, the type and size of tile you choose matters.
Larger tiles like concrete or clay pan tiles cover more area per piece. Smaller interlocking tiles like plain tiles or shingles use more per square metre. Slate tiles are small and thin, requiring high quantities per m2.
Popular roof tile sizes in the UK include:
- Plain tiles – 265 x 165 mm
- Interlocking tiles – 330 x 248 mm
- Concrete tiles – 356 x 256 mm
- Clay pantiles – 420 x 256 mm
- Natural slate – 300 x 600 mm
Check manufacturer specifications for exact dimensions and coverage rates. For non-rectangular tiles like interlocking shingles, coverage per m2 may vary.
Opt for larger tiles to minimize the pieces needed per m2. But consider the weight of your roof structure, and aesthetic preferences too.
Use a tile calculator to determine quantities for your project’s tile profile and dimensions.
Calculating Tiles Needed with a Roof Tile Calculator
Figuring out how many roof tiles you need for your project is easier with an online tile calculator.
To use a roof tile calculator:
- Enter the total roof area in m2
- Select your tile type and size from common options
- The calculator estimates the total number of tiles required
- It accounts for overlap, breakage and cutting waste
Double-check the tile dimensions and coverage rates used to match your selected product.
Some advanced calculators allow inputting the roof pitch, layout, and other specifics for even more accuracy.
Roofing calculators provide a handy estimate for budgeting and planning. Always order 5-10% extra tiles to be safe.
With the total number of tiles needed, you can get supply quotes and plan deliveries.
Use an online tile calculator to easily determine how many roof tiles you need per m2 for your particular project.
How do I calculate the number of roof tiles?
To calculate the number of roof tiles you need, you can use our roof tile calculators. Simply input the measurements of your roof area and the calculator will give you the exact quantity of tiles and materials required for your project.
How many tiles per m2 calculator?
Our online roof tile calculator allows you to input the dimensions of your roof to determine the number of tiles needed per m2. Just enter the length, width and any other measurements and the calculator will provide the tiles per m2.
How many double Roman roof tiles to a square metre?
For double Roman roof tiles, the standard quantity is 40 tiles per m2. So, if your roof is 100 m2, you would need 4000 double Roman tiles.
How many 10×6 roof tiles per square metre?
For a 10×6 concrete roof tile, the typical amount is 60 tiles per m2. Multiply the total roof area in m2 by 60 to get the number of 10×6 tiles needed.
In conclusion, to determine how many roof tiles you need per m2, there are a few key factors to consider. The type of tile, size, and manufacturer recommendations all impact the quantity of tiles per square metre. On average, concrete and clay tiles require 60-90 tiles per m2. For slates, you’ll need around 13 per m2 depending on the slate size. Use our roof tile calculator to get an exact estimate tailored to your roof. Considering these variables is crucial for accurately calculating how many roof tiles per m2 for your project.