What this stage means
During installation, the team should manage weatherproofing, remove waste safely, communicate progress, document hidden issues, and confirm any variation before extra work is done.
How to get this stage right
Hidden conditions are the main source of mid-job surprises. Once old roofing comes off, rotten purlins, undersized framing, or perished underlay may be exposed. A professional crew photographs what they find, explains the options, and prices the variation in writing before fixing it — never after. Keep those photos; they become part of the property's record.
Stay engaged without standing on the scaffold. A daily or every-other-day photo update takes the crew minutes and gives you a clear record of underlay, flashings, and details that are covered up by the finished roof. If something looks unclear in a photo, ask while the detail is still accessible.
Watch the housekeeping: swarf (metal drilling shavings) left on a new roof rusts within days and stains the coating, and offcuts left in gutters block drainage. End-of-day magnet sweeps and site tidy-ups are a sign of a crew that protects its own work.
Checklist
- Daily weatherproofing and site tidy-up
- Photo updates for hidden damage or changes
- Confirm variations before additional cost
- Keep access and safety controls in place
Roofing FAQs
01 What is a variation and when should I pay for one?
A variation is any agreed change to the contracted scope — extra timber repairs, an upgraded underlay, an added skylight. It should be described, priced, and accepted in writing before the work happens. Invoices for variations you never agreed to are worth questioning, politely and in writing.
02 How do I know the hidden details are done properly?
Ask for progress photos of underlay laps, flashing installation, and penetration seals before they are covered. A crew confident in its work shares these willingly — the photos cost nothing and become your evidence of what is under the finished surface.
This guide is published by Full Tree — steel roof repair and re-roofing specialists in Auckland and across NZ. Talk to us before you sign a roofing contract.
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