Seven Signs Your Roof Needs More Than a Repair

Irish weather is hard on roofs. Wind-driven rain, decades of freeze-thaw, and the odd storm all add up. The trick is spotting when a roof has moved from "patch it" to "replace it" — ideally before winter makes the decision for you.

Here are the signs we look for on a roof survey.

1. Slates slipping in more than one place

One or two slipped slates after a storm is normal wear — nails corrode, that's expected. But if slates are slipping across several areas, it usually means widespread nail failure ("nail sickness"), and you'll be back up the ladder every few months. At that point re-roofing is often cheaper than endless repairs.

2. A sagging or dipping ridge line

Sight along the ridge from the ground. If it dips or waves instead of running straight, something structural is going on underneath — rafters, purlins or the wall plate. This is not a slate problem, and it won't be fixed by re-covering alone.

3. Daylight or damp in the attic

Go into the attic on a bright day with the lights off. Pinpoints of daylight, water stains on the timbers, or a musty smell all mean the roof is letting weather in. Damp, dark-stained or soft rafters are a serious sign.

The roof you can see from the road tells you half the story. The attic tells you the rest.

4. Failed valleys and flashing

Valleys (where two roof slopes meet) and the lead flashing around chimneys and abutments are where most leaks actually start. Cracked, lifted or crudely mortar-patched flashing is a classic source of stubborn internal damp — and once it's failed in several spots, a proper re-lead is the real fix.

5. The roof has been "repaired" many times already

Mismatched slates, blobs of mortar, foam sprayed underneath, tar smeared over ridges — a roof carrying years of quick fixes is often more trouble than a clean re-roof. Each patch hides the next problem.

6. Widespread moss and delaminating slates

Heavy moss holds water against the roof. Slates that are flaking into layers (delaminating) or crumbling at the edges have reached the end of their life. A scattered few can be swapped; a whole roof of them can't.

7. It's simply old and never been touched

A natural slate roof can last a very long time, but the fixings and the underlay don't. A roof that's never been stripped in living memory may look fine from the ground while the battens and nails behind it are at the end of the road.

Repair or replace — get it looked at before winter

The worst time to discover you needed a new roof is during a January storm with water coming through the ceiling. If any of the above sounds familiar, it's worth a proper look now. We survey and re-roof across Munster — slate, tile, valleys, chimneys and flashing — and we'll give you a straight answer on which side of the line your roof is on.