Ridge tile replacement in Canterbury costs £400–£1,200 depending on ridge length and whether you re-bed in mortar or convert to a dry-ridge system. Loose ridge tiles are a leading storm-damage call — old mortar bedding cracks and lets tiles slip. A mechanically-fixed dry-ridge system solves it permanently and needs no future maintenance.
What Does Ridge Tile Replacement Cost in Canterbury?
Re-bedding or replacing ridge tiles in Canterbury costs £400–£1,200, driven by the length of the ridge, the height and access, and whether you re-bed in mortar or upgrade to a dry-ridge system. A short bungalow ridge sits at the lower end; a long two-storey ridge with scaffold at the upper end. Storm-damaged single ridges can sometimes be re-secured for less.
Since 2015, BS 5534 has required mechanical fixing of ridge and hip tiles — mortar alone is no longer compliant for new work, because relying on mortar bond to hold ridges has been shown to fail in high winds.
Source: BS 5534 (slating and tiling), 2014 revision
Why Do Ridge Tiles Come Loose?
Traditional ridge tiles are bedded on a mortar fillet, and over 20 to 40 years that mortar cracks, crumbles and loses its grip — especially on Canterbury's exposed downland edges around Bridge, Tyler Hill and Petham where wind loading is high. Once the mortar fails, the ridge tiles slip, and a slipped ridge is both a leak risk and a falling-tile hazard.
Mortar Re-Bedding or Dry Ridge?
You have two options. Re-bed the ridges in fresh mortar — cheaper up front, traditional look, but it will need doing again in a few decades. Or fit a dry-ridge system, where each ridge tile is mechanically screwed to a batten with a ventilated union underneath. Dry ridge costs a little more but never needs re-bedding and meets the current fixing standard. On exposed Canterbury roofs, dry ridge is usually the better long-term choice.
Is Dry Ridge Now a Requirement?
For new roofs and re-roofs, yes in effect — the current British Standard requires ridge and hip tiles to be mechanically fixed, so mortar-only bedding is no longer compliant on new work. On an existing roof you can still re-bed a failed mortar ridge, but if you're re-roofing, dry ridge is the standard we fit.
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