How Much Driveway Sealant Do I Need?
Sealing your driveway plays a key role in protecting the surface from water, oil, UV damage, and general wear. Over time, even well-laid block paving, tarmac, or concrete can crack and fade without the right protection — especially in the UK’s unpredictable weather.
Whether you're a seasoned contractor or a homeowner tackling a weekend project, calculating the right amount of sealant is vital for both your budget and the finish. Applying too little can leave patchy, uneven protection, while overbuying means wasted product. In this guide, we’ll show you how to estimate coverage, what factors affect consumption, and why choosing a premium brand like Everest or SummitSeal makes the job easier and longer-lasting.
Why seal your driveway?
Applying a sealant is one of the most effective ways to extend the lifespan of a driveway. It creates a protective barrier that helps prevent moisture from seeping in, which is particularly important in colder months when freeze–thaw cycles can cause cracks and erosion. It also helps resist staining from oil leaks or dirt, which can quickly make a surface look tired.
For concrete or tarmac driveways, sealing also enhances the colour and finish, offering a cleaner appearance. This is especially valuable for landlords or property owners looking to maintain a professional, well-kept exterior. In commercial environments, sealing can also improve safety by reducing surface deterioration over time.
If you're in the market for high-quality products designed for durability and visual impact, Premium Paints offers a full range of driveway sealing solutions that are ideal for both trade and DIY use.
What type of surface are you sealing?
Before estimating how much sealant you’ll need, it’s good to know exactly what kind of surface you’re working with. Tarmac, block paving, and concrete all have different levels of porosity, which affects how much product is absorbed. For example, a fresh tarmac driveway might need less sealant than a weathered block paving drive with open joints and visible cracks.
You’ll also want to consider the condition of the driveway. If it’s aged, cracked, or showing signs of wear, it might need more than one coat or a heavier coating option. This is usually the case for older surfaces that haven’t been sealed in a while.
Different surfaces also require different types of products. Take a look at our driveway coatings at Premium Paints for options that match your material type. Choosing the right coating ensures better coverage and longer-lasting results.
Standard coverage rates (by product type)
If you're working with a relatively smooth, sealed driveway, you'll likely get closer to the higher end of that range. However, older or porous surfaces may absorb more and require additional product.
- Water-based acrylics (inc. silane-modified): 4–6 m² per litre. Available in Dry, Colour Enhancer, and Wet-Look finishes. Silane-modified versions offer improved hydrophobic protection.
- Polyurethane (PU) sealers: 5–7 m² per litre. Create a tougher, longer-lasting film — ideal for block paving and concrete where durability is key.
- Solvent-based acrylics: 4–5 m² per litre. Popular on imprinted concrete for bold colour enhancement.
- Tarmac paints/sealers (water-based acrylic): 5–6 m² per litre. Refreshes faded asphalt and binds fretting surfaces.
| Container Size | Typical Coverage | Best Suited For |
|---|---|---|
| 5L tin | 20–30 m² | Small patios, paths, or one-car driveways |
| 20L tin | 80–120 m² | Larger two-car driveways, or trade projects |
Always check the manufacturer's recommendations before starting, as coverage can vary. Premium Paints offers a range of driveway paint products with detailed usage and coverage guidance on each page so you can easily calculate what you’ll need for your specific job.
How to measure your driveway
Measure the length × width in metres to calculate the area in m². For irregular shapes, break into rectangles or triangles, measure separately, and add together.
- A standard single-car driveway (≈5m × 3m) = 15 m² — around half a 5L tin.
- A two-car driveway (≈6m × 6m) = 36 m² — about 1.5 × 5L tins or a third of a 20L tin.
If the surface is older, porous, or hasn’t been sealed before, budget for extra product as absorption will be higher.
One coat vs. two coats
For previously sealed or dense surfaces, one coat may be sufficient. For unsealed, weathered, or porous driveways, two coats are strongly recommended. The first acts as a primer, soaking in and stabilising the surface, while the second builds the protective film.
Application tips for the best results
To get a clean, even finish, apply driveway sealant on a dry day with no rain expected for 12 to 24 hours. Work in manageable sections and avoid overloading the surface with too much product at once. This helps maintain an even texture and prevents peeling or pooling.
If a second coat is needed, wait for the first to dry completely. This usually takes several hours, depending on the product and weather. Always refer to the technical data sheet or instructions included with your sealant for specific guidance on drying times and layering.
Conclusion
Figuring out how much driveway sealant you need starts with knowing your surface type, condition, and square footage. Premium Paints makes it simple by offering reliable, cost-effective options for both professionals and DIYers. If you're ever unsure about the right product for your needs, our team is always ready to help you find the best sealant or coating.
