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The complete roof
A metal roof is a system of six parts.
The panel is what you see. The parts beneath it, and the flashing around it, decide whether the roof stays quiet, dry and straight. Here is the whole assembly, taken apart.
Exploded view
Take it apart, layer by layer.
Select a number on the drawing, or an item in the list, to read what each part does and why it is in the scope.
Six parts, one system
Component 1 of 6
Metal panel
Roll-formed or fabricated panels in steel, aluminium, zinc or copper. Gauge, profile, seam height and finish are chosen for the climate, the pitch and how the roof will be seen. Panels are cut to length for each course, so there are no end laps to leak.
Often the smallest part of the cost, but the part you notice first.
Why it costs what it costs
Price the roof, not the panel.
Two quotations for the same house can differ widely because they are not describing the same roof. One may include a ventilated air gap, a high-temperature underlayment, deck repair and custom-bent flashing. The other may be panel and a few screws.
We list each of the six parts in the scope, say what is included and what is not, and show how the figure moves if something changes. That makes our estimate longer than a one-line price, and far easier to compare.
Metal also behaves differently from other roofing. It expands and contracts, it conducts heat, and snow can slide from it in one piece. Each of those is solved in the assembly, not afterwards.
The scope
What is in, and what is not.
Typically included
- Roof measurement and a drawn layout of panels, seams and flashings
- Removal of the existing roofing and disposal, where agreed
- Deck inspection, with repair or replacement at the agreed allowance
- High-temperature underlayment and a ventilated air space where specified
- Panels formed to length, clips, fasteners and all trim in matching metal
- Flashing at every wall, chimney, vent, skylight and valley
- Snow guards, gutters and downpipes if chosen as add-ons
- Site protection, daily clean-up and a final magnetic sweep
- Handover documents, care guidance and warranty paperwork
Typically excluded unless written in
- Structural repairs, rot or framing beyond the agreed allowance
- Permit and design-review fees unless the written scope says otherwise
- Insulation or attic upgrades outside the roof assembly
- Chimney masonry, solar installation and electrical work
- Interior damage from earlier leaks
- Any item not listed in the signed scope
Discuss your roof
See what your roof could include. Start an estimate.
Five short steps give you an illustrative range and a clear idea of what moves it.