If you’ve just installed new paving, you might be asking yourself: “What happens if I don’t seal my patio?” It’s a common question, and one that can make a big difference to how long your patio stays looking its best.
In this guide, we’ll explain exactly what happens if you don’t seal your patio, what risks you’re taking, and why sealing your paving is worth it for long-term protection.
What Does Patio Sealer Actually Do?
Before you can understand what happens if you don’t seal your patio, it helps to know what a patio sealer does.
- It forms an invisible barrier over your paving slabs, block paving, or natural stone.
- It repels water, oil, dirt, and stains.
- It helps prevent algae, moss, and weeds from taking hold.
- It protects pointing and joints from weather damage.
- Some sealers enhance colour.
What Happens If I Don’t Seal My Patio?
Here are the most common problems:
Dirt and Stains Soak In
Without sealer, your paving is porous. Rainwater, dirt, BBQ grease, and algae can soak deep into the surface, making it harder to clean. Over time, these stains can be almost impossible to remove.
Weed and Moss Growth
If you’re tired of your patio going green, sealing it helps. An unsealed patio is more likely to grow weeds between joints and moss or algae on the surface because moisture stays trapped.
Frost Damage and Cracks
In colder climates, water can get into tiny cracks in your paving. When it freezes, it expands, causing chips, cracks, and loose pointing. A good sealer reduces this damage.
Fading and Colour Loss
UV rays and harsh weather can cause your paving slabs to fade. Sealing helps preserve the natural colour, especially for sandstone, limestone, and other natural stones.
More Maintenance, More Cost
If you skip sealing, you’ll probably spend more time and money cleaning and repairing your patio in the long run. Regular sealing keeps your patio looking new for longer with less effort.
What to Use to Seal a Patio
Look for a quality patio sealer that:
Is breathable (lets moisture out but not in).
Is safe for your type of paving (block paving, concrete, natural stone).
Won’t make the surface slippery.
We recommend Joint-It Premium Seal, our top selling paving sealer. Trusted by homeowners and professional contractors alike.
Tip: Always clean your patio first with Joint-It So Clean or Joint-It Algae Remover to remove dirt, algae, or moss before applying any sealer.
Shop Sealers
Seal your patio with the best products on the market:
For information on invisible sealers vs stone enhancing sealers, read here: Colour Enhancing Stone Sealer vs Regular Sealers
