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Roof problems

Slipped tiles, failed flashing, leaking valleys and flat roofs — what each fault means and how urgent it is.

Slipped Roof Tiles

Caution

One or more tiles have slid down the roof slope, leaving a gap or an overlapping tile out of line.

Roof Tiles Blown Off In High Wind

High risk

A named storm or a gusty night has stripped tiles or slates off the roof and left bare underlay showing.

Loose Or Cracked Ridge Tiles

High risk

The tiles along the very top of the roof are rocking, cracked, or have visible gaps in the mortar underneath.

Lead Flashing Coming Away From The Wall

Caution

The lead strip where the roof meets a wall, chimney or extension has lifted, split, or pulled out of the brickwork joint.

Chimney Leaking When It Rains

High risk

Damp appears on or around the chimney breast, in the loft next to the stack, or down the flue, but only after wet weather.

Roof Valley Leaking

High risk

Water is getting in along the internal angle where two roof slopes meet, often above a bay, extension or L-shaped roof.

Flat Roof Leaking

High risk

Water is coming through a flat roof over an extension, garage, bay or dormer, often after ponding or a cold snap.

Torn Or Sagging Roofing Felt In The Loft

Caution

Looking up in the loft you can see the black underlay hanging in shreds, sagging between rafters, or daylight through gaps.

Water Stain On The Ceiling But No Obvious Leak

Caution

A brown or yellow ring has appeared on an upstairs ceiling, but nothing is dripping and you cannot find where it came from.

Crumbling Mortar Along The Gable Verge

Caution

The mortar along the sloping edge of the roof at the gable end is cracked, hollow, or dropping onto the ground.