How to use UltraScape Flowpoint Rapid Set Flowable Grout

If you’re laying paving slabs, whether for a small patio or a high-traffic commercial area, getting the joints right is critical. UltraScape Flowpoint is a fast, user-friendly grout designed to make jointing quicker, cleaner, and more durable. This guide will walk you through the process, explain what tools you’ll need, and help you get professional results whether it’s your first time or you’re a seasoned pro.

Before you start, gather the following:

• UltraScape Flowpoint (See our advice on how much you might need below)
• Clean water (you’ll need 4.25L per bag)
• Forced action mixer or paddle mixer with drill
• Rubber squeegee to work the grout in
• Soft spray for keeping the surface damp
• Stiff broom or brush for final cleaning
• Waterproof gloves and eye protection

Step 1: Get Your Surface Ready 

Make sure the paving is secure and has had time to fully cure. Joints should be clean, free of debris and standing water. Pre-wet the paving and joints thoroughly—this helps prevent staining and improves flow.

Step 2: Mix the Grout 

In a clean mixing container or forced action mixer, add 4.25L of clean water. Slowly pour in one 25kg bag of Flowpoint while mixing for 3–5 minutes. You’re aiming for a smooth, lump-free slurry.

Don’t be tempted to add more water or remix later—once it starts to set, it’s done.

Step 3: Apply to Joints 

Pour the mix straight onto the wet paving. Use a rubber squeegee to spread it across the surface and push it into the joints. Keep the mix moving to refill any joints where it’s settled. It’s important to keep the paving damp throughout this process with a gentle spray.

Step 4: Clean Up 

As soon as the grout begins to harden (around 15–30 minutes depending on temperature), wash the surface thoroughly with a stiff brush and plenty of clean water. Remove all residue—don’t let any grout dry on the surface.

Step 5: Protect & Finish 

Flowpoint sets quickly. You can walk on it in about an hour and drive on it after four (in warm conditions). Avoid using pressure washers for the first week and protect the area from extreme weather where possible.

To make the most of Flowpoint and get a professional-looking result, there are a few golden rules to follow. These best-practice tips can help you avoid common mistakes and keep your paving in top condition.

• Only mix what you can use in 4 minutes.
• Always do a small test patch to check for staining on your stone.
• Ideal working temperatures: 5°C to 30°C.
• Never re-wet or remix once it begins to set.

Knowing how much grout to buy is essential to avoid delays or wastage. Here’s a quick guide to help you calculate quantities based on your patio size and joint dimensions.

Each 25kg bag gives you around 13.9 litres of grout. Here’s a quick guide:

• Typical patio with 8mm joints, 20m²: You’ll need around 10–14 bags.
• For 5–10mm wide joints at 20–25mm deep, estimate 0.5–0.7 bags per square metre.

As with all cement-based products, safety is important when working with Flowpoint. Here are some key precautions to protect yourself and others on site.

• Wear gloves and goggles while mixing and applying.
• Wash hands and tools thoroughly after use.
• Keep out of reach of children and pets.
• Dispose of waste and packaging responsibly.

To buy Flowpoint grout directly, you can shop online here. If you’re planning a larger project, we also offer a cost-saving pallet deal on bulk quantities. For exclusive trade pricing or to discuss a custom order, give us a call on 01708 855698 —our team will be happy to help.

If you need advice on quantities, compatibility, or technique, reach out to us by visiting our contact page.