FathomTrowel / UK commercial flooring takeoffs

Substrate preparation allowances in flooring takeoffs

A practical bid-review guide for UK commercial tiling and flooring contractors. Preparation can affect the work and pricing basis, so keep its allowance visible alongside the drawings, specification and project notes supplied.

01 / Why it matters

Preparation can change the scope behind a finish

A flooring takeoff may include separate preparation work as well as the finish quantities. The drawings, specification or project notes may describe that work, but the information supplied may leave its extent or basis unclear. Treating an unconfirmed condition as a measured quantity can make the bid harder to review and can hide what the allowance is meant to cover.

02 / Check the information

Start with the project documents available

Compare floor plans and details with the finish schedule, specification, addenda and any substrate or preparation notes provided. Keep the drawing revision or document reference beside the item. Separate an explicit instruction from an assumption; if the extent or condition is not established by the supplied information, mark it for clarification rather than assigning a site-specific quantity.

03 / Make the allowance reviewable

Put the allowance and its assumptions in writing

Keep preparation distinct from the measured floor finish. State the activity, the area or item it relates to where the documents identify one, and the basis used for the allowance. Record what is included or excluded and list open questions. A contractor can then compare the bid with the drawings, specification and available notes, check the pricing basis, and decide which tender points need confirming.

  • SourceName the drawing, specification, schedule or project note and its revision.
  • ScopeDescribe the preparation activity and the area or item it relates to, where shown.
  • BasisState what is included, excluded or assumed, and flag information still to confirm.

This is general, trade-informed bid-review guidance. It does not assess a particular site's substrate condition or determine required preparation quantities; those need to be reviewed against the information and instructions for that project.