Solids content is the amount of film-forming resin a sealer leaves behind after the carrier evaporates — and it’s the single best predictor of how long a paver seal lasts. Box-store sealers run about 12–15% solids; professional acrylics about 30%; the ICT Ure-Seal H2O we use is around 45%. More solids means a thicker, more durable, breathable film — which is why a cheap seal often stops looking sealed within 9–12 months in Florida.
Two sealers can look identical in the can and cost wildly different amounts. The number that explains the gap isn’t on the front label — it’s the solids content, and once you understand it, you’ll never buy a paver sealer the same way again.
What “solids content” actually means
Every sealer is resin (the protective part) carried in a liquid (water or solvent). When you apply it, the carrier evaporates and the resin stays behind as a film. Solids content is the percentage that’s resin — the part that actually protects your pavers. A 15% sealer leaves behind 15% of what you rolled on; the other 85% flashes off into the air. A 45% sealer leaves three times as much protection per coat.
The numbers
| Sealer tier | Typical solids | What it means |
|---|---|---|
| Box-store / consumer | ~12–15% | Thin film, short life |
| Professional acrylic | ~30% | Roughly double the film |
| ICT Ure-Seal H2O (ours) | ~45% | ~3× a box-store film |
Why it matters so much in Florida
Our climate is brutal on thin films. Relentless UV, heat, humidity, and afternoon rain break a low-solids seal down fast: it wears thin, softens in the sun (hello, hot-tire pickup on driveways), and stops beading water within a season. A high-solids film has the thickness to take the abuse and keep protecting. That’s the difference between a seal you redo every year and one that holds for 2–3 Florida years.
Just as important, the sealer we use is water-based and breathable. High solids gives you protection; breathability lets the paver release the moisture that’s always moving through it in Florida humidity. Cheap solvent-based sealers can trap that moisture and turn milky — so a low-solids solvent product manages to be both thin and prone to hazing.
“You’re not paying for a shinier can — you’re paying for how much sealer is left after it dries.”
How to read past the marketing
Solids content is often buried in the technical data sheet rather than the front label. A useful tell: coverage rate. If a sealer claims very high coverage per gallon, it’s usually because it’s thin — you’re spreading a little resin very far. Premium sealers cover less per gallon precisely because they’re leaving more film behind. Cheaper up front, thinner on the ground.
The bottom line
A box-store seal isn’t just cheaper labor — it’s a thinner coat of a lesser product. It can look great for a few months, then fade, soften, and fail right as the warranty-free clock runs out. Paying for a high-solids, breathable, water-based sealer is paying for the years it actually lasts.
What is a good solids content for paver sealer?
Higher is better for durability — box-store is ~12–15%, pro acrylic ~30%, premium water-based urethane ~45%. More solids means a thicker, longer-lasting film per coat.
Why does my paver sealer wear off so fast?
Usually low solids — a 12–15% product leaves a thin film that wears and softens under Florida sun, often failing within 9–12 months.
Are expensive paver sealers worth it?
Generally yes — the price tracks solids and durability. A higher-solids, breathable sealer lasts 2–3 years instead of a season, so it costs less over time.
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