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Pitched roof detail

Dry Ridge System & Dry Verge

A dry ridge system fixes every ridge tile to the roof mechanically, with screws, clips and a continuous ridge batten, instead of sitting it on a bed of mortar. It is the permanent answer to loose ridge tiles and crumbling ridge pointing: once fitted there is nothing left to crack, wash out and need repointing every few winters. We fit dry ridge and dry verge across the North East on slate and tile roofs.

  • Loose, rocking or missing ridge tiles re-fixed mechanically
  • Dry verge caps along gable ends in place of mortared verges
  • Works on concrete tile, clay tile and slate roofs
  • Ventilated ridge option to help loft condensation
  • Cracked ridges replaced with matched tiles
  • Free, written, itemised quote before any work

Why mortar ridges keep failing

For most of the last century ridge tiles were simply bedded on sand and cement. The mortar is rigid, while the roof timbers beneath it move with every change in temperature and moisture. Over time hairline cracks open, rain gets in, frost widens them, and the bed starts to crumble out in small lumps you find in the gutter or on the path.

Once enough bed has gone, the tile is held by little more than its own weight. Strong wind gets underneath, the tile rocks, and eventually it slides or lifts off altogether. Ridge tiles are heavy, so one coming down is a genuine hazard, not just a leak waiting to happen.

Repoint, re-bed or go dry?

There are three honest options, and we tell you which one your ridge actually needs after looking at it from the roof, not the drive.

Ridge tile repointing suits a ridge where the tiles are still firmly bedded and only the outer joints have weathered. The loose pointing is raked out and refilled. It is the lightest touch, but it does nothing for a bed that has failed underneath.

Re-bedding means lifting the tiles, clearing the old mortar and laying them on a fresh bed. It keeps the traditional look and is sometimes the right call on older or sensitive properties.

A dry ridge system replaces the mortar with a mechanical fix. A ridge batten is fixed along the apex, a roll of breathable ridge membrane is dressed over it, and each tile is screwed or clipped down with union pieces covering the joints. It costs more than repointing but stops the cycle of repeat repairs, which is why we usually recommend it when the whole ridge is loose.

Dry verge on gable ends

The verge is the edge of the roof where the tiles finish at a gable wall. Traditionally the gap was filled with mortar, and those mortar verges fail in exactly the same way as ridges, often worse because they take the full force of driving rain. A dry verge system fits interlocking plastic caps over the end of each row of tiles, fixed to the batten ends, so the edge is sealed without any mortar at all.

Dry verge is usually done at the same visit as a dry ridge because the access, whether that is a tower or scaffold, is already in place. Doing both together is the most cost-effective way to take the mortar maintenance out of a roof entirely.

Choosing ridge tiles

People often ask for the best ridge tiles for a slate roof, or for black, clay or crested ridge tiles. The right tile is the one that matches the roof covering and the street. Slate roofs normally take a plain angled or half-round ridge in a dark finish, clay tile roofs take clay ridges, and crested ridges belong on period properties that had them originally.

Where only a few ridges are cracked we source matched replacements so the line looks continuous. Where the whole ridge is being renewed we talk through options at the survey and confirm the choice in the written quote.

Can I fix ridge tiles myself?

We would not advise it. Ridge work is done at the highest point of the roof, usually needs a tower or scaffold, and walking on tiles to reach it risks breaking more than you fix. If you can see a ridge tile rocking, missing or lying in the gutter, keep people clear of the area below and call us on 07840 996627, Monday to Friday 8am to 6pm. If water is coming in, see our roof repairs page; if it is wear rather than a leak, book a free roof survey.

Related pages

Dry ridge and ridge tile FAQs

How do you fix loose ridge tiles?+

Each loose ridge is lifted, the old mortar bed is cleaned off, and the tile is either re-bedded on fresh mortar or, more often, re-fixed mechanically onto a dry ridge system with a screw and clip into a continuous ridge batten. Cracked ridges are swapped for a matched replacement before refixing.

What are ridge tiles?+

Ridge tiles are the capping tiles that run along the apex of a pitched roof, covering the gap where the two slopes meet. Hip tiles do the same job on the sloping external corners of a hipped roof, which is why they are usually discussed together as hip and ridge tiles.

What is repointing ridge tiles?+

Repointing means raking out the cracked mortar between and under the ridge tiles and filling it with fresh mortar. It suits a ridge where the tiles are still firmly bedded and only the joints have weathered. If the tiles rock when pressed, repointing alone will not hold them.

Are dry ridge tiles any good?+

Yes. A dry ridge holds every tile with a mechanical fixing rather than relying on mortar, so there is nothing to crack and wash out each winter. It also lets the roof breathe at the apex, which helps with loft condensation.

Are ridge tiles important?+

Very. The ridge is the highest and most exposed line on the roof. If a tile lifts or its bed fails, rain is driven straight into the top of the roof, and a ridge tile that falls is a real safety risk to anyone below.

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