Slipped Roof Tiles: How Urgent Is It?

High winds regularly displace tiles and slates. A single slipped tile might look minor, but it exposes the layer beneath — usually a breathable membrane or old felt — to conditions it wasn't designed to handle long-term.

Why Tiles Slip

Tiles are hung on battens (horizontal timber strips) using a nib (a small projection) that hooks over the batten edge. They slip when:

• Nibs break — Often due to age, frost damage, or manufacturing defects
• Battens rot — The timber can decay, losing its grip on the tile
• Nails fail — Where tiles are nailed, corrosion eventually weakens the fixing
• Wind damage — Strong gusts can lift tiles, breaking their seating

The Risks of Leaving Slipped Tiles

A slipped tile creates an opening in your roof's defences:

• Water entry — Rain can now reach the felt or membrane, which will degrade if constantly wet
• UV damage — Sunlight accelerates felt deterioration
• Wind damage — Gaps allow wind under surrounding tiles, making more likely to slip
• Further slippage — Tiles depend on their neighbours for stability; gaps create a cascade effect

How Urgent Is the Repair?

This depends on several factors:

• Single tile, minor slip — Important to fix, but not an emergency if the felt beneath is intact
• Multiple tiles or missing tiles — More urgent, as protection is significantly compromised
• Visible felt/membrane damage — Water is getting through; needs prompt attention
• Bad weather forecast — Anything compromised should be addressed before storms

What Can You Do?

• Don't climb on the roof — It's dangerous and can cause further damage
• Take photos from ground level — Useful for explaining the issue
• Check inside — Look in the loft for signs of water entry
• Arrange professional repair — A straightforward job for an experienced roofer

Most tile repairs are relatively quick and cost-effective — waiting until there's water damage inside is far more expensive.