Short answer: sealing a driveway is worth it when the surface is sound, freshly cleaned, re-sanded and fully dry, and you want the colour to hold, the joint sand to stay locked and oil to wipe off more easily. It is not worth it on a drive that is still damp, newly laid, moving underfoot or about to be sold next month.
Sealing puts a protective film over or into a cleaned surface. Done at the right moment on the right material it holds colour, locks joint sand and makes future cleans easier. Done at the wrong moment it traps moisture and looks worse than doing nothing. A properly re-sanded and sealed drive will hold its colour for 18–36 months before needing another treatment.
Sealing is usually worth it when
- You've just had block paving cleaned and re-sanded and want the joints to stay put.
- The drive is in full view of the street and you care about colour holding.
- Oil drips are a recurring problem and you want a surface that releases them more easily.
- You want to reduce how often the surface needs a full clean.
Sealing is usually not worth it when
- The surface is still damp or has just been laid and hasn't finished curing or efflorescing.
- You're moving imminently and just need presentation.
- The paving has structural problems — sinking, rocking blocks, failed sub-base — that need fixing first.
- The surface is a type where sealing can trap moisture and cloud, which we'll tell you about before quoting.
Matt or satin
Matt keeps the surface looking natural: cleaner, but not obviously coated. Satin lifts colour and gives a light sheen, which suits red and brindle block paving and looks deliberate rather than shiny.
Whichever you choose, it's a finish choice, not a performance one — both protect similarly.
What sealing will not do
It won't stop moss forming on the surface, it won't fix drainage, and it won't hold blocks that are moving. It reduces how fast dirt embeds; it doesn't make a surface self-cleaning.
Pros and cons of sealing block paving at a glance
- Pro: joint sand is bound in place, so it isn't washed or swept out and weeds find it harder to root.
- Pro: colour is lifted and held, particularly with a colour-enhancing or satin finish.
- Pro: oil and food spills sit on the surface for longer, giving you time to clean them before they soak in.
- Con: it is an extra cost and usually an extra visit, because the drive must dry out after cleaning.
- Con: it needs re-coating over time, and worn traffic lanes can look patchy before the rest.
- Con: applied to a damp or efflorescing surface it can cloud or turn milky and has to be stripped.
How to decide for your own drive
Start with the condition of the paving. If blocks rock, the edges are sinking or water pools in one place, fix that first — sealing a failing drive only preserves the problem. If the paving is sound, think about what annoys you most: weeds and lost sand point towards sealing; a one-off tidy for a sale points towards a clean and re-sand only.
Then consider the finish. Matt changes the look least, satin adds a gentle sheen and warmer colour, and a wet look is the most dramatic. We can show you on a small test area before committing, and we'll say plainly if we don't think your surface should be sealed at all.