· Absolute Roofing 247

A roof does two jobs. It keeps the rain out, and it sends that rain somewhere safe. Most people think about the first job and forget the second. Yet in Greater Manchester and West Yorkshire, where wet weather is a normal part of life, the parts of your roof that carry water away matter just as much as the tiles and slates.
This guide explains the parts of the roof that move rainwater, the signs that something is wrong, and what you can safely check yourself.
The parts of your roof that handle water
Rain runs down your roof and has to go somewhere. It is guided by:
- gutters and downpipes, which collect water at the bottom of the roof and take it to the drain
- valleys, the channels where two roof slopes meet
- roof edges, including the edges of flat roofs, where trims guide water into the gutter
- lead flashing, which seals the joins around chimneys and walls
If any of these gets blocked, cracked or loose, water stops going where it should. It can soak into walls, run behind fascias, or back up under tiles.
Warning signs to look out for
You can spot many problems from the ground or from a window. Look for:
- water spilling over the gutter when it rains
- plants, moss or leaves growing out of the gutter
- gutters that sag or have pulled away from the wall
- damp patches or green staining on outside walls
- water marks on ceilings close to an outside wall
- a flat roof where water sits in puddles for days after rain
None of these should be ignored. A small overflow can slowly damage timber at the roof edge, and that is a bigger job to put right later.

Valleys: the hidden weak spot
Roof valleys carry a lot of water in heavy rain. Leaves and moss can collect in them, and the lining can wear over time. When a valley is blocked or worn, water can spill sideways under the tiles. That is one of the reasons we check valleys carefully during roof repairs and roof leak detection.
Flat roof edges
On a flat roof, the edge trim helps guide rainwater into the gutter. If the trim is loose or damaged, water can run down the wall instead. When we fit a new flat roof, we pay attention to the edges so water drains away properly.
What you can safely do yourself
Please stay off ladders and roofs. Falls from height are a real risk. From the ground you can:
- watch your gutters during heavy rain
- check walls for damp patches
- look for sagging gutters or loose trims
- take photos of anything that looks wrong
If you are not sure, ask a roofer to take a look. We also offer drone roof surveys, which can show gutters, valleys and hard-to-reach areas without anyone climbing on the roof.
Get a free roof check quote
Absolute Roofing 247 covers Greater Manchester, West Yorkshire and the surrounding areas, with 24/7 emergency roofing if water is coming in. All quotes are free. Call free on 0800 046 1159 or request a free roofing quote.
See our roofing services and the areas we cover.
Related: roof repairs and leak detection · flat roof repairs · areas we cover · request a free quote · more roofing advice
