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Roofer guide

Six tasks, in this order. Finish and check each one before the next. Where it says stop and call — stop for real.

Non-negotiable: on trapezoidal metal, fasten on the crest, never in the valley. The valley carries the water.

01

Before you climb

Harness on, lifeline tied to a fixed point. No climb without that.
Check the forecast: wet metal or strong wind means no work.
Lift tools in a rope bucket, never in your hand.
Count materials against the staging list before you start.

Before you continue: Modules, rail kits, fasteners and sealant are all there. If anything is missing, do not start.

Stop and call: if the sheet flexes, is rusted through, or gives when you step.

02

Mark where modules go

Work on the slope the survey marked as usable.
From the eave, measure up to the plan mark and chalk it.
From the side edge, measure the other plan mark.
That cross is the first module corner. Everything is laid out from there.

Before you continue: The mark does not cover vents or survey obstacles.

Stop and call: if the array does not fit without hitting an unsurveyed obstacle.

03

Fix feet to the sheet

Feet always on the crest, never in the valley.
Mark the plan points: two rows parallel to the eave.
Pilot-drill and drive the self-tapping screw with a rubber washer.
Tighten until the rubber just compresses. Seal every hole.

Before you continue: Pull each foot by hand. None move, and none sit in a valley.

Stop and call: if a hole landed in the valley: do not seal and continue.

04

Mount the rails

Set rails on the feet and snug without full torque.
String-line both rails end to end.
Measure both diagonals of the rectangle. They must match.
Only then torque every bolt.

Before you continue: Diagonals differ by 1 cm or less.

05

Lift and fix modules

Always two people. A module sails in wind.
Never grab the glass or rest it on a corner.
Place the first at the chalked corner with end clamps.
The rest use mid clamps, leaving 2 cm between frames.

Before you continue: Modules aligned, even 2 cm gaps, no loose clamps.

Stop and call: if a module arrived with cracked glass: do not install it.

06

Leave the roof ready for the electrician

Run cables under the modules, UV-tied to the rail.
No cable hanging or resting on the sheet.
Clear offcuts, screws and swarf.

Before you continue: Roof clean, cables tidy.

Stop and call: do not connect anything. Electrics are the electrician’s job.

Installers join

Sample junior mounting guide. Confirm measures with a tape on site before drilling.