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Alex Shepherd Roofing
Roofing service

Roof tiling and tiled roof repairs

The post-war housing round here is mostly under concrete interlocking tile, and those roofs are now at an age where things start going.

Concrete tiles are tough but they aren't permanent. They get porous, they go soft at the edges, and the ridge bedding that holds the top of the roof together gives up long before the tiles do.

Covering
East Lancashire & Craven
Quotes
Free, no pressure
Ring or text
07840 031508

What we do

  • Replacing cracked, slipped and delaminating tiles
  • Re-bedding and re-pointing ridge and hip tiles
  • Dry ridge systems, mechanically fixed rather than mortared
  • Full strip and re-tile with new battens and membrane
  • Valley repairs and replacement
  • Verge repairs, including dry verge systems

What goes wrong with tiled roofs

Ridge bedding.
This is the big one. Ridge tiles were traditionally bedded on mortar, and mortar cracks. Once it has, wind gets underneath and ridges start to lift. If you can see gaps along the ridge line from the street, that wants doing before it turns into a ridge tile in somebody's garden.
Porous tiles.
Old concrete tiles soak water up instead of shedding it. You'll see moss growing thickly and the surface going rough and flaky. Once a whole roof is like that, it's nearing the end.
Slipped tiles.
Usually a broken nib on the tile itself, or a batten that's rotted.
Nail sickness and batten failure,
exactly as on a slate roof.

A word about moss and pressure washing

Moss on a tiled roof is common round here and mostly cosmetic. What isn't harmless is having somebody pressure wash it off.

A pressure washer strips the surface off a concrete tile, takes the bedding out of the ridge, and forces water up under the laps. Plenty of roofs we're called to have been finished off by a jet wash rather than by weather.

If moss is genuinely causing a problem, usually by blocking gutters, it can be removed by hand or scraped. Anyone offering to blast your roof clean for a modest sum is selling you damage.

Repair or re-tile?

Tiles can be replaced individually all day, so the question is whether enough of them have gone, and whether the battens beneath still hold a nail.

If the ridge has failed but the tiles are sound, re-bedding or a dry ridge system is a fraction of a re-tile and buys years.

Common questions

The things people ask us

Ridge tiles clamped down mechanically with screws and a sealing strip instead of bedded in mortar. It costs more initially, and it doesn't crack, come loose, or need redoing in fifteen years. On an exposed roof it's usually worth it.

Salvage is often available. Failing that, the usual approach is to take sound tiles from a less visible elevation to make the front good, and use new ones where they show least.

Yes, with weather delays built into the plan. A roof isn't left open overnight, and we won't strip a section we can't get watertight the same day.

Only if it's blocking gutters or holding water against the tiles. Moss on its own isn't damaging a sound roof, and removing it badly does more harm than leaving it.

Reviews

What people said about the work

Read the reviews, then ring us and see if we match up.

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