An integrated stone basin: questions before fabrication

Collect the fitting information.

Keep the tap and waste model numbers with their technical drawings. Show whether the tap is wall- or surface-mounted, its outlet position and the intended relationship to the basin. Identify any overflow requirement with the responsible designer or installer.

Do not use a reference photograph to infer the hole sizes or fitting compatibility. The actual hardware information should travel with the basin drawing.

Draw the parts that are normally hidden.

Include the underside, trap, supply connections and access for future maintenance. Where the basin meets cabinetry or a wall, identify the support and adjoining finishes. Ask which parts are supplied together and which are installed on site.

A concealed waste cover or a sculpted recess also needs cleaning and maintenance access. Discuss how the parts are reached and removed where that is required by the design.

Agree the checks before release.

Ask the responsible team to state the fitting and functional checks they will carry out. Keep the approved dimensions, finish, joint positions and relevant test records together. A polished photograph alone does not establish drainage performance.

Confirm who prepares the site, installs the assembly and carries out the final checks. Keep those responsibilities in the order scope so they are understood before delivery.

Your checklist

Questions before the next step