Some roof problems are urgent, some are cosmetic, and telling them apart from the ground is more possible than people think.
Most people find out their roof needs attention when something drips. By then the covering has usually been failing for a while, and the visible signs were there to be seen. Here is what to look for and what it means.
| What you see | What it usually means | Urgency |
|---|---|---|
| Slipped or missing units, scattered | Fixings failing generally | Plan a replacement |
| Slipped units, all in one area | Localised damage | Repair |
| A dipped or wavy ridge line | Structural movement | Get it looked at promptly |
| A slope that dishes rather than sits flat | Rafter or batten problem | Get it looked at promptly |
| Cracked or missing ridge mortar | Mortar at end of life | Repair; not a whole roof |
| Vegetation and heavy moss | Usually cosmetic | Low |
| Daylight through the roof from inside | Covering breached | Act now |
| Flaking or delaminating slates | Material at end of life | Plan a replacement |
The loft tells you more than the outside does, and it costs nothing to look. Pick a bright day and take a torch anyway.
Useful as background rather than as a countdown. A roof's life depends on how it was laid, its exposure and what has happened to it, and these are broad ranges rather than promises.
| Covering | Broadly |
|---|---|
| Natural slate | Very long — often outlasts its own nails |
| Clay tile | Very long |
| Concrete tile | Long |
| Fibre cement slate | Shorter than natural slate |
| Underlay and battens | Usually the first thing to fail |
| Ridge and verge mortar | Shortest of the lot; expect work before the roof needs it |
That last pair is the point. The commonest reason an old roof is failing is not the slate or tile at all — it is the timber and the fixings holding them, which is exactly what you cannot see from the ground.
Any of the prompt-action signs above. Also worth it if you are buying the house, if a survey has flagged the roof, or if it has simply been a long time and you would rather know than wonder.
A proper assessment looks at the covering, the fixings, the battens, the underlay, the flashings and the structure — and should tell you what the roof needs rather than only what it could be sold.
Tell us the property type, what is on the roof and what has been happening with it. We will tell you what it actually needs.
Damage scattered across the whole roof rather than grouped in one place. Grouped damage has a cause and can be repaired; scattered damage is the covering or its fixings reaching the end of their life.
Largely cosmetic. It can hold water against the covering and block gutters, so it is worth removing — but moss on its own is not a reason to replace a roof.
Daylight, whether there is any underlay and what condition it is in, staining on the rafters, damp insulation, and whether the rafters sight straight.
Yes, more than most covering faults. A dipped ridge or a dished slope is structural rather than cosmetic, and structural problems get worse.
It varies widely, and the covering usually outlasts the battens, underlay and fixings holding it — which is why an old roof often fails at the nails while the slate is still sound.
Apex Roofing covers Cheshire and the surrounding area for complete roof replacement, new slate and tiled roofs and re-roofing.
Tell us about the property and the roof, and we will come back to you — usually the same day.
Prefer to talk? Call 07377 461095 · WhatsApp +44 7465 861265 · Email apexroofing14@gmail.com
