The calculators and guides on MyDIYCalc are general planning tools. A result is a useful starting point, rather than a promise about the exact amount your job will use.
Your product information comes first
Pack sizes, mixed yields, coverage, fixing requirements and installation methods vary. Read the label and current instructions for the product you are buying, and adjust the calculator inputs where the tool allows it.
Some projects need a site-specific answer
For structural work, services, boundaries, permits and safety-critical tasks, get appropriate local advice. A materials count does not confirm that a design is safe, suitable or permitted.
Check the details before ordering
Measure the actual space, choose an allowance that fits the layout and confirm the rounded buying quantity with your supplier. Keep your notes, product labels and delivery details.
Something look wrong?
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