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Enter your roof measurements below and we will calculate the complete Supaslate Pro Line material schedule for your project.
Planning a roof with Supaslate Pro Line? Use our calculator to quickly estimate the number of plastic roof tiles, ridge tiles, fixings and accessories required for your project.
Simply enter the dimensions of your roof and the calculator will calculate the approximate quantities required, helping you plan your project, reduce unnecessary waste and order your Supaslate roofing materials with confidence.
Supaslate Pro Line is a premium lightweight plastic roof tile designed to replicate the appearance of traditional natural slate while offering the durability, consistency and reduced weight of a modern recycled polymer roofing system.
Designed, manufactured and tested in Great Britain, Supaslate Pro Line is suitable for a wide range of residential and lightweight roofing applications, including house roofs, extensions, tiled conservatory roof conversions, garden rooms, home offices, garages, park homes and outbuildings.
Each square metre requires 15 Supaslate Pro Line tiles, but calculating the complete requirements for a pitched roof can become more complicated once roof dimensions, ridges, hips, fixings and wastage are taken into account.
The Roofin Supaslate Pro Line calculator does the hard work for you.
Enter your roof measurements into the calculator above to receive an instant estimate of the materials required for your project.
Supaslate Pro Line combines the appearance of natural slate with the practical advantages of a lightweight plastic roofing system.
At approximately 10.5kg per square metre, Supaslate Pro Line places significantly less weight on the roof structure than many traditional roofing materials. This makes it particularly useful for lightweight construction and roof conversion projects where structural loading needs to be carefully considered.
The individual 330mm x 425mm tiles feature a realistic slate-effect finish and are manufactured from durable recycled polymers. Unlike natural slate, the consistent manufactured construction means the tiles will not crack or delaminate and can be fixed without pre-drilling, helping to make installation faster and reduce material wastage.
Supaslate Pro Line is also available in a choice of colours, allowing the finished roof to complement both traditional and contemporary buildings.
Unlike lightweight roofing tiles intended primarily for sheds and garden buildings, Supaslate Pro Line has been developed for more demanding roofing applications.
It can be used on domestic roofs, house extensions, conservatory roof replacements, garden rooms, outdoor offices, garages, workshops, timber frame buildings, park homes, glamping accommodation and other residential or leisure projects.
With a minimum recommended roof pitch of 15 degrees, Supaslate Pro Line can also provide a useful solution for lower pitched roofs where the appearance of traditional slate is required.
The Roofin Supaslate Pro Line calculator uses the dimensions and configuration of your roof together with the coverage requirements of the Supaslate system to estimate the materials needed for installation.
Depending on your roof design, this can include the number of Supaslate Pro Line roof tiles, matching hip and ridge tiles, fixing screws and other system components required to complete the roof.
This provides a quick and convenient starting point for budgeting, comparing roofing options or preparing to place an order.
For the most accurate calculation, always measure the actual pitched roof surface rather than simply entering the footprint of the building. The sloping surface of a pitched roof is larger than the area it covers at ground level.
Supaslate Pro Line has a coverage requirement of 15 tiles per square metre.
For example, a straightforward 20m² roof would require approximately 300 field tiles before any additional allowance for cuts or wastage.
However, the total quantity required can vary depending on the shape and complexity of the roof. Hips, valleys, rooflights, abutments and other details can increase the number of cuts required, which is why an appropriate wastage allowance should always be considered when ordering.
Using the calculator above provides a much quicker way to estimate the complete requirements for your individual roof.
A complete Supaslate Pro Line roof requires more than just the main roofing tiles.
Matching flexible Supaslate Pro Line hip and ridge tiles are available to create a consistent finish across the roof. Each hip and ridge tile measures 300mm x 500mm, with approximately five tiles required per linear metre.
The system can be installed onto roofing battens or directly onto a suitable fully boarded OSB or plywood roof deck using the appropriate Supaslate fixing screws.
Our calculator can help bring these different components together, giving you a clearer indication of the complete system required rather than calculating each product separately.
Once you have calculated your requirements, you can use the estimated quantities to build your complete Supaslate Pro Line roofing order through Roofin Online.
Supaslate Pro Line is available with matching hip and ridge tiles, breathable membrane, verge solutions and genuine Supaslate fixing screws, allowing the main components of the roof to be ordered together.
The calculator is intended as a material estimation tool. Every roof is different, so calculated quantities should be checked against your actual roof design and the manufacturer's installation guidance before ordering.
