Sealer coverage is given in square metres per litre and it is always a range rather than a single figure - 5-10 m²/l, for instance. That comes down to the material itself: absorbent, worn paving will drink twice what dense, fresh paving does.
From which follows a simple rule: work from the bottom of the range. If the coverage is 5-10 m²/l, use 5. You will buy a little more than the minimum, but you will not run out halfway across the drive.
In short
Coverage is a range, not a figure.
The low end for absorbent material, the high end for dense.
Work from the low end.
Running out mid-job costs more than having spare.
Multiply by the number of coats.
Some products go on in more than one coat - allow for it when you buy.
Add one pack of spare.
Topping up later means a different batch - with colouring products that can show.
The arithmetic, step by step
Area divided by coverage, times the number of coats. For a 100 m² drive and a preparation rated 5-10 m²/l in one coat: 100 ÷ 5 = 20 litres on an absorbent substrate, or 10 litres on a dense one. The twofold difference comes down to absorbency alone.
How to judge absorbency without instruments: pour a glass of water onto a cleaned patch. If it soaks in within fifteen seconds or so, the substrate is absorbent - work from the low end. If it sits there for a minute or more, it is dense and the high end is realistic.
Some typical areas
| What | Typical area | At 5 m²/l, one coat |
|---|---|---|
| Terrace | 20-30 m² | 4-6 l |
| Single-car drive | 40-60 m² | 8-12 l |
| Drive with turning space | 80-120 m² | 16-24 l |
| Two-car garage floor | 35-45 m² | 7-9 l |
| Ground floor facade | 60-90 m² | 12-18 l |
Cost per m², the figure that actually settles it
The price of a pack says little until you know how many metres it covers. A preparation that costs more per litre but goes further can work out cheaper per metre - and that is the comparison that makes sense over larger areas.
Which is why every product shows, beside the price, the price per litre and, where coverage is known, the approximate cost per square metre. That is a solid basis for comparison - unlike a vague "strength of protection", which cannot be measured.
See coverage on the products
Price per litre and cost per m² on every sealer - pick what works out better for your area.
PremiumImpregnat do kostki brukowej - mokry efekt Wet Finish Guard Industry
169,00 zł
139,60 zł/L
PremiumSolvent-based block paving sealer, wet look SK-2 CTS Chemistry
60,27 zł
54,12 zł/L≈ 7,22 zł/m²
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StandardOil stain remover for concrete and paving OL-1 CTS Chemistry
55,20 zł
55,20 zł/L
StandardBlock paving sealer, wet look HK-2 CTS Chemistry
43,70 zł
36,00 zł/L
StandardBlock paving sealer, invisible finish HK-1 CTS Chemistry
31,89 zł
25,80 zł/L
StandardConcrete patio slab sealer, wet look HBP-2 CTS Chemistry
50,29 zł
45,76 zł/L
Common questions
Why is coverage given as a range?
Because it depends on the substrate. On absorbent, worn paving the same formulation goes deeper and is used up faster than on dense, fresh paving - the range covers both.
Does a second coat use as much as the first?
Usually less, because the first filled some of the pores - how much less depends on the material. When planning your purchase, it is safer to assume the same as for the first coat.
How much spare should I allow?
One pack. It is not about quantity but about the batch: a pack bought two weeks later will come from a different one, and with colouring preparations the difference in shade between batches can show.
Can unused preparation be kept?
Yes, though an opened pack usually keeps for less time than a sealed one. Check the storage conditions and shelf life in the product's technical data.
