Driveway sealing & joint stabilising
In short
Sealing a drive where it genuinely helps — block paving, sandstone, imprinted concrete — and saying so where it does not. A sealer applied over a dirty, damp or failing surface locks the problem in, so what happens before the sealer goes on matters more than the sealer.
Also called: Seal block paving · Driveway sealer · Paving sealant · Stabilise jointing sand
Signs you need this
- Block paving joints washing out or growing weeds every year
- Ants excavating jointing sand into heaps on the surface
- A new block or sandstone drive you want to keep looking new
- Sandstone paving picking up oil, leaf or iron staining
- Imprinted concrete whose colour has gone flat
- A recently cleaned drive that is dry and ready to protect
Sealing is worth doing on some surfaces and close to pointless on others, and the honest split is not complicated. On block paving a sealer stabilises the jointing sand, resists staining and deepens the colour. On porous sandstone it genuinely reduces staining and helps with frost. On imprinted concrete the sealer is not optional at all — it carries the colour and the durability. On resin bound it is unnecessary and can be harmful. On gravel it is meaningless. On tarmac it is a coating rather than a sealer, and should be described as one.
The preparation is the job. A sealer is a permanent-ish film applied over whatever is on the surface, so if the drive is dirty, mossy, oily or damp when it goes on, all of that gets locked in — and the only way out is to strip the sealer off. That means treating and cleaning first, letting the drive dry properly, re-sanding block paving joints, and only then sealing. Rushing the drying time is the commonest failure and it shows up as a milky, cloudy finish.
Joint stabilising is the specific benefit on block paving and worth understanding on its own terms. A stabilising sealer soaks into the kiln-dried sand and binds it, so the joints resist washing out, weeds struggle to root, and ants cannot excavate them. It does not turn the joints into mortar and it does not stop a drive moving if the edge restraint has failed — but it materially reduces the two everyday nuisances that make a block drive look neglected.
The finish is a choice with consequences. A gloss or wet-look sealer gives the deepest colour and the most dramatic result; it also shows wear faster and can be slippery when wet, which matters on a falling drive or a shaded one. A matt or satin sealer looks more natural, ages more gracefully and is less slick. Anti-slip additives can go into either, and are worth specifying on any slope.
Expect to redo it. Sealers wear — typically every three to five years on a drive, sooner where traffic is heavy or the aspect is sunny. That is a running cost and it should be stated at the outset rather than presented as a one-off treatment. On imprinted concrete it is a genuine obligation; on block paving it is optional maintenance that keeps things tidy.
Two things a sealer will not do, which are the two things it is most often sold as doing. It will not fix a drive that is moving, sunken or cracked — it will make the faults shinier. And it will not make a permeable surface better; on resin bound or permeable block paving a film sealer removes the permeability you paid for and can push the drive back inside the planning rule it was designed to avoid.
What the job covers
- An honest view on whether sealing your surface is worthwhile
- Moss, algae and weeds treated and removed first
- Surface cleaned at a pressure suited to the material
- Block paving joints re-sanded and vibrated before sealing
- Oil and stain treatment before any sealer is applied
- Drive allowed to dry thoroughly — the step that decides the result
- Sealer chosen for finish, with an anti-slip additive on slopes
- A clear statement of when it will need doing again
What it costs
We don't publish a price for this yet, because a number pulled out of the air is worse than no number at all — your contractor has to honour it. On driveways it would also be close to meaningless: the groundworks are usually the biggest single factor, and how deep the dig has to go varies enormously house to house. You'll get a firm price for your actual job when they ring you back, before any work starts. The quote itself is free and there's no obligation either way.
Common questions
Does block paving need sealing?
It does not need it — a well-built block drive works fine unsealed — but sealing does two useful things: it stabilises the jointing sand so it stops washing out and growing weeds, and it resists staining. It is genuine optional maintenance rather than an essential, and it is worth most on a drive that is already in good condition.
Why did my drive go cloudy after sealing?
Moisture trapped under the sealer, almost always because the surface was not fully dry when it was applied. It can also happen from applying too thickly or in the wrong temperature. It usually has to be stripped and redone, which is why the drying time before sealing matters more than the sealing itself.
Should I seal a resin driveway?
No. Resin bound does not need a sealer and a film sealer over it removes the permeability that is one of its main advantages — which on a front garden can affect whether the drive still satisfies the permitted development rule. Keeping it swept and washed is the correct maintenance. Anyone offering to seal resin bound is selling something it does not want.
How long does a sealer last?
Typically three to five years on a driveway, less where traffic is heavy or the drive faces full sun. On imprinted concrete that cycle is an obligation rather than a choice, because the sealer carries the colour and the surface protection. On block paving it is optional. Either way it is a repeating cost and should be presented as one.
Need this doing in Macclesfield?
Tell us the job and it goes straight to our local contractor — one call back, usually the same day. Free quote, no obligation.