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Blackburn Guttering home
It may be dry in Blackburn today but get your broken gutters fixed before the next downpour.
Cracked white gutter corner leaking water down the corner of a brick houseBefore
The same gutter corner replaced with a new, sealed white corner pieceAfter
Example photos of a gutter before and after the work.

Why do gutters become loose, sag or detach from the fascia boards?

In short

Gutters become loose, sag or detach from the fascia boards mainly because brackets fail under the weight of debris and standing water, or because the fascia board behind has rotted and can't hold the screws. Brackets spaced too far apart, ladders, wind and ice also play a part.

Updated November 2026

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How does weight pull gutters loose?

Weight pulls gutters loose when they fill with wet leaves, moss, silt and water. A blocked gutter can weigh many times more than an empty one. The extra load bends brackets, pulls screws out of the fascia and opens up joints. Once one bracket fails, the load shifts to the next, so sagging tends to spread along the run.

Why do brackets fail?

Brackets fail because plastic becomes brittle with age and sunlight, metal brackets rust, and screws loosen as the gutter expands and contracts with temperature changes. Brackets fitted too far apart are another cause: manufacturers of uPVC gutters typically recommend about one metre between brackets, and closer spacing near corners and outlets.

How does a rotten fascia board cause problems?

A rotten fascia board causes problems because the gutter brackets are screwed into it. When timber stays wet, often from a leaking or overflowing gutter, it softens and the screws pull out. Older houses with painted timber fascias are most at risk, especially where the paint has failed. The gutter can then drop at one end or come away completely.

Can ladders and wind damage gutters?

Ladders and wind can both damage gutters. Leaning a ladder directly on a plastic gutter can crack it or snap a bracket. Strong winds can catch a loose section and lift it, especially at corners and on exposed houses facing open hills.

Does ice damage gutters?

Ice damages gutters when water trapped in a blocked or sagging gutter freezes. The ice adds weight and expands, which can split joints and push brackets out of line. Gutters that drain freely are much less affected.

How can you prevent gutters coming loose?

You can prevent gutters coming loose by keeping them clear, fixing leaks quickly so the fascia stays dry, and replacing damaged brackets before the sagging spreads. A yearly gutter clean gives a contractor the chance to check the brackets and fascia. If timber fascias are rotting, replacing them with uPVC can stop the problem coming back.

What should you do if a gutter is coming away?

If a gutter is coming away, keep people and cars away from below it and book a repair quickly. See gutter repairs to request quotes from local contractors.

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