Brick repointing in Alton on chimneys, gable walls and parapets. Once the mortar softens or falls out, water gets into the wall. We rake back the old joints and refill with a mix that suits the brick.
Run a key along a joint. If the mortar crumbles or you can dig into it easily, it needs repointing. Other signs are gaps you can see daylight through, mortar dust at the base of the wall and damp patches inside on the same wall.
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The mortar should be softer than the brick, so the joint takes the movement instead of the brick face. A hard cement mix on an old soft brick does real damage over time. We match the mix to the age and type of the brickwork.
Most of the repointing we do is on chimney stacks and gable ends, because they take the worst of the weather. It is high level work, so it needs proper access. We usually combine it with a roof or flashing check to save a second setup.
Prestige Roofing repoints brickwork as part of its construction work around Alton, mostly on chimneys, gables and parapet walls where roofing and brickwork meet. Over 10 years we have worked on properties of every age here. Checks and quotations are free, whether the job is one stack or a whole elevation.
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STILL NOT SURE?
A properly raked out and refilled joint lasts 50 years or more on a sheltered wall. Chimneys and exposed gables weather faster, so they come round sooner. The main thing that shortens it is a mix that is too hard for the brick.
It can, as long as there is no frost. New mortar that freezes before it sets will fail. We watch the forecast and hold off if a cold snap is coming, rather than pressing on and having to redo the work.
Often, yes, where the damp is coming through failed joints. It is worth checking the other causes too, such as a blocked gutter or failed flashing above the wet patch. We look at the whole elevation before saying repointing is the answer.


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