How to Use ProJoint Titan for Stone and Concrete Paving

When working with patios, pathways, or driveways, getting the jointing right is just as important as laying the paving itself. For a finish that lasts, ProJoint Titan paving is one of the most reliable solutions available. It’s fast-setting, tough, and works in all weather conditions – making it ideal for projects in the UK.

We’ll explain how to use ProJoint Titan properly, what to prepare before starting, and the common mistakes to avoid.

What Is ProJoint Titan?

ProJoint Titan is a high-strength, rapid-setting epoxy grout designed for filling joints between paving slabs, tiles, and setts. It’s supplied as a sand and resin mix with a separate hardener, which you combine on-site before application.

This compound is suitable for both stone and concrete paving and can be used with impermeable or permeable bedding mortars. It works with joint widths from 5mm upwards and is strong enough for light vehicular traffic up to 10 tonnes.

Once cured, the joints are frost-resistant, weed-proof, and safe for pressure washing.

Tools and Materials You’ll Need

Before you begin, make sure you have the following:

ProJoint Titan kit (22.5kg tub)
Clean water supply
Mixing paddle or drill with paddle attachment
Rubber squeegee or stiff brush
Soft brush for finishing
Hose or watering can for rinsing
Clean bucket for mixing

Always wear gloves and follow the instructions on the packaging for safe handling.

Preparing Your Paving Area

A proper surface preparation is key to getting the best results from ProJoint Titan paving. Here’s what to check:

Joints must be a minimum of 5mm wide and 20mm deep
Surfaces must be clean, stable, and free from loose debris
Ensure that there is no standing water before starting
It’s safe to apply even in damp weather, but avoid heavy rain or hot sun

If you're using porcelain or smooth stone, make sure the paving surface is wet before application. This helps prevent resin residue from sticking.

Mixing ProJoint Titan

The ProJoint Titan tub includes all the components you need:

Sand and resin base (pre-mixed in vacuum-sealed pouch)
Separate hardener liquid

Here’s how to mix:

Open the pouch and pour the sand/resin mix into a bucket or mixing tray
Add the hardener liquid
Mix thoroughly using a mixing paddle until the consistency is uniform
Once mixed, the product must be used immediately – it sets quickly

Mix only what you can use in 15–20 minutes to avoid waste.

Applying ProJoint Titan

Once mixed, the compound is poured directly onto the paving surface. The application is quick and straightforward:

Spread the mix across the surface using a rubber squeegee
Work the compound into the joints, making sure all gaps are fully filled
Add more product as needed, keeping the surface damp to help flow
Continue brushing diagonally across the joints until all are compacted

Use a soft brush and plenty of clean water to rinse away any residue. Work in small sections to avoid leaving marks behind.

Curing Time

ProJoint Titan is rapid-setting. Most applications will fully cure within 12–24 hours depending on weather conditions. Avoid walking on the paving until the joints are hard.

Light foot traffic: after 12 hours
Vehicular use (under 10 tonnes): after 24 hours

Curing is slower in cold weather but faster in warm conditions.

Common Mistakes to Avoid

To get a clean, strong finish with ProJoint Titan paving, avoid these errors:

Applying to dirty or dry paving – Always wet the surface beforehand
Mixing too much at once – Only mix what can be applied in 15–20 minutes
Leaving residue on the slabs – Rinse thoroughly with water during application
Working in hot sun – The product sets faster and may leave stains

If in doubt, hire a professional to apply the compound correctly.

Where Can You Use ProJoint Titan?

This jointing compound is suitable for a range of outdoor applications, including:

Natural stone paving (e.g. sandstone, granite, limestone)
Concrete slabs and flagstones
Clay and manmade setts
Porcelain tiles (with proper wetting)

It performs well in patios, courtyards, driveways, and other high-traffic areas. Thanks to its durability and resistance to frost and weeds, it's ideal for UK conditions.

Available Colours and Coverage

ProJoint Titan is available in three colours to match different paving styles:

Neutral (buff)
Mid grey
Basalt (dark grey)

Each 22.5kg tub covers around 10 square metres on average, depending on joint width and paving size. For example:

600x900mm slabs:

5x25mm joints: ~52m²
10x22mm joints: ~26m²
15x22mm joints: ~15.5m²

200x100mm setts:

5x25mm joints: ~8.4m²
10x22mm joints: ~4.2m²
15x22mm joints: ~2.8m²

Check the manufacturer's guide from Nexus for more precise figures based on your project.

Why Use ProJoint Titan for Stone and Concrete Paving?

ProJoint Titan has become a leading choice for landscapers and homeowners because it combines convenience, strength, and a professional finish. It solves the most common problems associated with jointing – like cracking, staining, weed growth, and poor weather resistance.

For anyone investing in a quality patio or driveway, using a product like ProJoint Titan is worth the extra cost. You won’t have to worry about redoing the joints in a year’s time, saving money on maintenance and repairs.