Dry Verge Systems › Porthcawl › Guide
Mortar at the gable end looks solid for years, then one winter it starts to crumble. Many Porthcawl houses have verges that have been patched more than once. Here is what is happening when mortar fails, what it leads to if ignored, and what the options are for putting it right.
The first signs from the ground
You can often see trouble without going near the roof. Look for dark gaps between the edge tiles and the barge board, crumbs of mortar in the gutter or on the path, or edge tiles that sit at slightly different angles. Do not climb up to check. Those signs are enough to call us for a proper look. Holiday-let owners should look after a quiet spell in winter, since a verge can fail while nobody is at the property to notice.
Why mortar cracks and drops out
Mortar shrinks as it ages, and it does not flex with the roof. Salt air, frost and wind-driven rain work into any hairline crack, then freeze and widen it. On the exposed gable ends at Rest Bay or along the seafront the process is quicker. Once a section falls, the tiles beside it lose their support. Verges on pre-war houses around Nottage and Newton were often rebedded several times, and each patch is a weak joint waiting to open.
What it leads to
With the bedding gone, edge tiles can slip, rock or lift in the wind. Rain and birds get into the roof edge, and insects nest in the gap. Water that gets past the verge soaks the batten ends and rafters below. A loose tile can also come down in a storm and land on a path or car.
- Loose or slipped edge tiles
- Water getting into the batten ends and rafters
- Birds and insects nesting in the roof edge
- Risk of a tile falling in high wind
Repair or replace
A small patch of failed mortar can sometimes be rebedded, but it often fails again where the old mortar meets the new. If the cracking is widespread, we usually suggest taking it off and fitting a dry verge, with fixed units and no wet mortar. We check the tile profile and the battens first, then explain what is realistic. If only one side is bad, we will say so and avoid doing more than is needed. The aim is a verge that stays put, not a bigger job.
What we check before repairing
Before any repair, we look at the tiles along the edge, the condition of the fixings, the barge boards and the rafter ends underneath. A verge that has failed for a long time may have done damage we need to deal with first. We show you what we find and agree the work, with any planning or Building Regulations checks advised before work starts.
Need dry verge systems in Porthcawl? See our dry verge systems in Porthcawl page, or call 07766 547309.
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Common Questions
Is a cracked verge an emergency?
Not usually, but it should not be left. Wind and rain can make a small crack into loose tiles quickly, so in a coastal town like Porthcawl it is sensible to get it looked at before the next stormy spell.
Can you just fill the cracks with mortar?
Sometimes for a small area, but it often cracks again at the join with the old mortar. Where the failure is widespread, a dry verge usually lasts better because nothing relies on wet bedding.
Can I get a failed verge repaired on one gable only?
Yes. If the other gable is sound, we repair the failed one and leave the rest. We check both ends while we are there and tell you honestly if the second is likely to follow soon.
Get a Quote in Porthcawl
Tell us what the roof is doing in Porthcawl and we will look at it. Call 07766 547309, message us on WhatsApp or use the form below.