Coverage & Quantity Estimator
Enter a wall or floor area — or its width and height — and get the number of panels, planks, boards or sheets you need, including a waste allowance.
≈ 2.9 m × 0.30 m board
Enter the area you need to cover.
ƒ units = ⌈ area × (1 + waste %) ÷ coverage per unit ⌉
To estimate how many panels, boards or sheets a job needs, divide the area you are covering by the coverage of a single unit, then add a waste allowance — typically 10%. For example, cladding a 48 m² façade in WPC planks that each cover 0.42 m² needs 48 ÷ 0.42 ≈ 114 planks, or about 126 once a 10% margin for cuts and offcuts is added. The estimator does this for you and lets you adjust the coverage to match the exact product on your spec.
How to estimate material quantity
Start with the area you need to cover — either enter it directly in square metres or square feet, or give a wall’s width and height and the number of identical walls and let the tool work out the area.
Pick the material type to load a typical coverage per unit, then fine-tune that figure to the exact panel, plank, board or sheet you intend to order — sizes vary between ranges, so the spec sheet is the source of truth.
Add a waste allowance and the estimator divides the with-waste area by the coverage of one unit and rounds up, because you can only order whole pieces.
Why you should always add a waste allowance
No job uses 100% of the material delivered. Cuts at corners, around openings and at the ends of runs all create offcuts that cannot be reused, and a small buffer covers transit damage and future repairs.
A 10% allowance suits straight, simple runs. Allow 15% (or more) for diagonal, herringbone or chevron layouts, busy façades with many openings, or where a continuous grain or pattern has to be matched across boards.
Typical coverage of common TSS materials
Wall panels ≈ 0.87 m² each (a 2.9 m × 0.30 m board); WPC cladding ≈ 0.42 m² per plank; WPC louvers ≈ 0.45 m² per profile; fibre-cement boards ≈ 2.98 m² each (a 2.44 m × 1.22 m / 8′×4′ sheet); roofing sheets ≈ 2.28 m² of effective cover each.
These are representative figures to get you a fast, realistic number. For a firm quantity, share your drawings or BOQ and we will confirm against the precise product, fixing centres and accessories.
Frequently asked questions
How much waste should I allow for?
Allow about 10% for straight, simple installations. Increase to 15% or more for diagonal, herringbone or chevron patterns, façades with many windows and doors, or where a grain or pattern must be matched across boards.
Should I subtract doors and windows from the area?
For a tighter estimate, subtract large openings from the gross area before entering it. For smaller openings it is usually safer to leave them in, as the offcuts they create are rarely reusable.
Where do the coverage figures come from?
They are representative sizes for common TSS lines. Real panel, plank, board and sheet dimensions vary between ranges, so the coverage field is editable — set it to the exact figure on your product’s specification sheet.
Can TSS confirm the exact quantity for my project?
Yes. Send your drawings, elevations or a BOQ and our team will return a firm quantity for the specific product — including fixing accessories, trims and a recommended waste margin — along with a quote.
Does it work in metric and imperial?
Both. Enter areas in m² or ft², and wall dimensions in metres or feet — the estimator converts everything to a consistent basis before calculating.
Need the materials — not just the maths?
Tech Serve Solutions supplies wall panels, WPC cladding, uPVC, cement boards and roofing to EN, ASTM and ISO standards — specified, sampled and exported worldwide.