A five-minute material estimate check before you order

Before sending an order, read the estimate as if someone else had prepared it. Every number should have a unit, every product should have a matching coverage or yield, and every allowance should be distinguishable from rounding.

A worked example

Item	Example or check
Measurement	Source, date and units recorded
Product	Coverage or yield from exact label
Allowance	Chosen percentage visible
Purchase	Rounded whole units shown
Price	Currency, delivery and tax checked

Check the assumptions

Recalculate one simple section manually. For example, a 3 m × 2 m surface is 6 m². If a tool returns 60 m², stop and check the entered units before trusting any purchase count derived from it. Independent checks are more valuable than repeatedly pressing Calculate on the same inputs.

Record the assumptions that another person might interpret differently: whether openings were deducted, whether pack coverage includes all pieces, whether the density is loose or compacted, and whether delivery is taxable in your quote.

Before using the estimate

Ask the supplier or installer to confirm the final order and any design-dependent specifications. Keep the checked estimate with the quotation so later changes can be traced to a measurement, a product change or a price change.

Open the Material Cost Calculator and compare your measurements with the example.