New roof installations · A focused guide

What should the roofer and builder each provide on a new roof?

Published by Big Ben Roofing Ltd

There is no safe assumption that a roofing quote and a builder's quote cover the same boundaries. List the supporting construction, roof layers, openings, junctions, drainage and access arrangements, then identify who provides and checks each item. Share that allocation with the project coordinator before work begins. A clear interface schedule reduces gaps and conflicting instructions, while leaving structural design or specialist tasks with the appropriate people rather than silently treating them as part of the covering installation.

Identify readiness for the roofing stage

Ask what must be complete before the roofing team attends and who confirms that it matches the specification. Examples to discuss include the prepared supporting roof, wall junctions and rooflight openings. Record any unresolved design decisions with the coordinator. A start date alone does not explain whether the preceding work is ready or whether another trade must return before weathering details can be completed.

Use one agreed description at the interfaces

Keep the same current drawings and product information with everyone responsible for a shared detail. If the builder changes a wall level or opening, ask who reviews its effect on roofing before proceeding. Variations should identify both the roofing consequences and work by others. This avoids an apparent completed task that leaves the next contractor unable to make the intended connection.

Useful details to record

List the building components at each trade interface.
Name who provides and checks each component.
Agree what ready-for-roofing means for this project.
Give the coordinator responsibility for distributing design changes.

Use information already available from indoors or ground level. Do not climb onto the roof or disturb materials to complete this checklist.

Can the trades resolve every boundary when they arrive?

Some details can be clarified on site, but important assumptions should be resolved before work depends on them. Ask the coordinator to record the agreed responsibilities, current drawing issue and any open decisions so a programme is based on a workable shared brief.

Background reading

General guidance helps frame the questions. The cause, suitable materials and scope depend on inspection of the particular roof.

Discuss what you have noticed

Include your postcode, the affected roof section and when the concern appears. The team will review the enquiry and confirm the next step, scope and availability.

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