Why is preparation the most important part of a restoration?
Preparation is the most important part because a coating can only be as good as the surface it holds onto. Dirt, loose particles, old flaking layers, organic growth and moisture all reduce adhesion. When a restored driveway fails early, the cause is far more often poor preparation than the coating itself.
In practice, preparation also takes up a large share of the working time on site. Owners who follow a job by photo updates sometimes expect colour on the first day and are surprised to see washing, scraping and filling instead. That is the correct order, and it is the part of the quote we are least willing to shorten.
Preparation also includes the practical groundwork that has nothing to do with chemistry. Cars are moved off the surface, pots and outdoor furniture are cleared, access for equipment and water is agreed, and the area is kept free of people and pets while washers run. Royal Decree 1627/1997 sets minimum health and safety provisions for construction works with or without a project, and a driveway restoration is no exception.
Every surface also tells its own story during preparation. A stamped concrete drive that has only faded needs little more than washing and a few repairs, while one with several old coats, oil marks and weeds in every joint can need far more work before the first coat. That difference is the main reason two driveways of the same size can receive quite different quotes.
How is the surface cleaned before coating?
The surface is cleaned with pressurised water across the whole area, including joints, corners, the base of walls and the space under gates. The goal is to remove dirt, dust, leaves, organic growth and anything that is no longer firmly attached. Pressure washing is not just about looks; it is the first test of how sound the surface is.
- Loose dirt, dust and leaf litter swept and washed out of the pattern and joints.
- Moss, algae and black spots of growth washed off, especially in shaded areas.
- Weeds between pavers and along edges removed by hand before washing.
- Old coating that lifts under pressure allowed to come away rather than kept.
- Oil and tyre marks assessed separately, because they may need extra cleaning.
Oil stains deserve a specific mention because they are common on driveways and garage aprons. Oil can soak into concrete and interfere with a new coating. Where marks remain after washing, we discuss with the owner whether they can be reduced sufficiently or whether they will still be faintly visible under the colour.
What happens to old coatings and sealers?
Old coatings and sealers are judged on one question: are they still firmly bonded? Firmly bonded layers can usually stay as part of the base once cleaned. Flaking, peeling or powdery layers must come off, because a new coat applied over them will fail when they do.
We check adhesion by washing, by scraping at edges and by looking at areas of wear such as wheel tracks and the zone in front of the garage. Patches where an old finish has worn through to bare concrete are not a problem in themselves; they are simply part of the surface that the new coats will cover.
When an old film has turned milky or cloudy, the reason matters, as explained in our guide to white haze and stains. If moisture beneath the old layer is the cause, we talk it through with the owner before deciding how to proceed, rather than coating over a known problem.
How are cracks and holes prepared and filled?
Cracks and holes are cleaned out, then filled with acrylic filler or repair mortar and finished flush with the surface. Small chips at edges and around drain covers are treated the same way. The repair has to be sound and level; colour matching is not needed because the tinted resin will cover it.
- Remove loose material from the crack or hole with a scraper or brush.
- Wash or blow out dust so the filler can bond to clean edges.
- Press acrylic filler or mortar into the defect with a spatula.
- Level it with the surrounding surface and remove excess.
- Let the repair cure according to the product data sheet before coating.
Before filling, every crack is looked at for signs of movement. A hairline crack with flat edges is a surface defect. A wide crack with one side higher than the other, or a crack that has clearly opened recently, may indicate movement in the base, which we cover separately under concrete crack repair and, where the base has failed, through our sister site's guide to why paving sinks.
Why does the surface need to be dry before coating?
The surface needs to be dry because water in or on the concrete can prevent the resin from bonding and can cause hazing or blistering later. After pressure washing and repair, the area is left until it has dried sufficiently, and shaded zones under pergolas or beside walls often take longer than open sunny areas.
Weather on the day matters too. Rain, heavy dew, very low temperatures or strong wind carrying dust are all reasons to wait. We follow the conditions set out in the product data sheet rather than a fixed timetable, which is why we never promise how many days a job will take in a quote or on the phone.
Irrigation is a frequent hidden problem. Sprinklers that wet the edges of a driveway overnight, a garden hose left dripping or splash from a pool can keep a strip of paving damp without anyone noticing. Owners who are away should ask whoever looks after the garden to switch off or redirect irrigation before and during the job.
Shaded areas need their own judgement. Under a reed-roofed pergola like the one in our photos, or along the north side of a house, concrete can stay damp long after the open drive looks dry. We check those zones separately and, where needed, work the sunny sections first so that the shaded ones have the time they need before any coating reaches them.
What gets masked, and why does it matter?
Everything that must not change colour gets masked with masking tape and, where needed, sheeting: brick edging, walls, columns, gate posts, thresholds, drain grilles and the edges of planted beds. Masking is the last preparation step and it defines the clean lines of the finished job.
In our photo set, masking tape runs along the brick edging of a flower bed while a filled crack runs down the driveway beside it. When the tape is removed at the end, the coating stops on a straight line and the brick stays clean. For the full service, see cleaning, preparation and sealing; the cost factors behind preparation are set out on our pricing site's cost factors page. When you are ready, send us a photo and the approximate m² – free, no-obligation quote.
Frequently asked questions
Can I pressure wash the driveway myself before you arrive?
You can, but we will still wash it as part of the job, because we need to see how the surface reacts and remove anything that comes loose. Washing it beforehand mainly helps you take clearer photos for the quote.
Do weeds between the pavers have to be removed first?
Yes. Weeds and their roots are removed by hand before washing, and the joints are cleaned out. Coating over growth leaves an uneven finish and the plants simply push through again along the joints.
Will oil stains show through the new coating?
Heavy oil contamination can interfere with bonding and may remain faintly visible. Stains are assessed after washing and, where they persist, we tell you before coating what result to expect rather than leaving it as a surprise at the end.
Does all the old paint have to come off?
Only the parts that are loose, flaking or powdery. Firmly bonded old coating can usually stay once it has been cleaned, because the new coats can hold onto it. Removing sound layers would add work without improving the result.
Why do you check cracks before filling them?
Because a crack that is still moving will reopen through the filler and the coating. Flat hairline cracks are filled as part of the restoration; wide or stepped cracks are investigated first, as they may come from a problem in the base.
Why can't you coat on the same day as washing?
The surface has to dry properly after washing, and repairs need to cure according to the product data sheet. Coating damp concrete risks poor adhesion and haze. How quickly it dries depends on the weather and on shade.
Do I need to switch off the garden irrigation?
Yes, ideally before washing and until the coating is ready. Sprinklers and drips can keep strips of paving damp overnight. If you are abroad, ask your gardener or property manager to switch it off or redirect it.
What do you mask before coating?
Brick and stone edging, rendered walls, columns, gate posts, door thresholds, drain grilles and the edges of planted beds. Tape and, where needed, sheeting keep these clean, and the tape is removed at the end of the job.
Is preparation included in the quote or charged separately?
Preparation is part of the restoration and appears as its own lines in the quote, such as pressure washing, crack and hole repair and edge masking. That way you can see exactly what each stage covers before agreeing to the work.
What photos help you judge the preparation needed?
A wide view of the whole area, close-ups of cracks, flaking paint and stains, a photo after hosing a small corner, and pictures of edges and walls next to the paving. Add the approximate size in square metres.