Repointing Brickwork Before Winter: Why Autumn Is the Right Time to Act

Autumn is the time to take a proper look at your brickwork. Not a glance from the driveway, but a close-up inspection of the mortar joints between your bricks. If you can see gaps, crumbling edges, or mortar that crumbles away when you press it with a finger, then repointing before winter arrives is well worth serious consideration.

Mortar does a quiet but important job. It seals the joints between bricks, keeping water out and holding the structure together. Over time, especially in a county like Kent where we get our fair share of wet winters and the occasional hard frost, that mortar gradually weathers and breaks down. It is a slow process, and easy to overlook until the damage becomes more obvious.

Here is why winter makes things worse. Water finds its way into cracked or missing mortar joints. When temperatures drop and that water freezes, it expands. That expansion forces the joints apart a little more each time. Over several winters, what started as a minor maintenance job can become a much more significant repair. Bricks can start to spall, meaning the face of the brick breaks away, and once that happens you are looking at a harder and more costly fix.

A useful thing to check yourself is the pointing on any north-facing walls. These are the ones that stay damp longest and tend to deteriorate faster than south-facing brickwork that gets the benefit of drying sunshine. Run your finger along a few joints and see what comes away. If the mortar feels soft, sandy, or hollow-sounding when you tap it, that is a sign it needs attention.

It is also worth checking garden walls, not just the house itself. A low boundary wall might not seem like a priority, but water getting into poorly pointed joints through winter can shift and crack even a well-built wall over time. The same applies to any brick pillars, steps, or retaining structures around the garden.

One thing many people do not realise is that the mix of new mortar matters quite a bit. Using a mix that is too hard, particularly one with a high cement content, on older or softer bricks can actually cause damage rather than prevent it. The mortar needs to be slightly softer than the brick itself so that any movement or moisture can escape through the joint rather than through the brick face. A good tradesman will assess the existing mortar and match the new mix accordingly.

Timing matters too. Repointing should ideally be done when temperatures are consistently above five degrees Celsius. Fresh mortar needs time to cure properly, and if it freezes before it has set, it will fail. This is why getting the work done in early to mid-autumn makes sense. Waiting until November or December in the hope of a dry spell is a bit of a gamble, and the weather in Kent can turn quickly once we get into the back end of the year.

If you are not sure whether your brickwork needs attention, it is always worth getting someone experienced to take a look. A proper assessment costs nothing and could save you a fair amount of trouble down the line. Repointing done well is a straightforward job that protects your property for years. Left too long, it becomes something bigger.

If your brickwork is looking tired or you would simply like some honest advice on what needs doing before the cold weather arrives, get in touch with Rye's Contractors. We are based in Kent and happy to come and take a look.