What’s The Best Brush-In Patio Grout?
04/07/2025Choosing the right grout for your patio project is an important decision. Yes, the paving slabs are considered the main feature, but it’s the patio grout that can make all the difference. But when there are so many variations of patio grout, is brush-in grout the way to go when laying patios?
From Joint-It Ready-to-Use and ProJoint Fusion All-Weather Paving to ProJoint Polysweep Block Paving and UltraScape All-Weather Brush-In specifically for porcelain paving, there’s a lot to consider. Not to mention the grouting tools required to perfect the job.
Our guide explains the benefits of using patio grout, the various types of brush-in grout available, and which type is best suited for your patio project.
What is Brush-In Patio Grout?
Brush-in patio grout is a type of paving compound that joins and sets your patio slabs in place. It is a dry mix of sand and cement, often pre-mixed for ease of use, that fills the gaps between your paving slabs – simply pour it on, brush it in, and leave it to set. Some types of brush-in grout do require mixing with water before application, so always read the manufacturer's instructions. Also available in a range of colours, brush-in patio grout is a cost-effective and reliable product for grouting any-sized patio.
Patio Brush-In Grout: What’s the Difference?
Knowing the various classifications of patio grout can help you decide which product is most suited to your skill set, types of paving slabs, and your desired finish. Below is a breakdown of the best brush-in grout to help you get it right from the start.
Product | Application | Joints | Types of Paving | Walk On Time | Colour Options |
Pour onto paving and brush in with a soft-bristle brush | Minimum of 3mm wide & 25mm deep | Stone & Porcelain | Sand Grey Dark Grey Black | ||
Pour onto paving and brush in with a soft-bristle brush | Minimum of 3mm wide & 25mm deep | Stone & Porcelain | 24-48 hours | Natural Cashmere Storm Grey Pebble Grey Cosmic Black | |
Pour onto paving and brush in with a soft-bristle brush | Minimum of 3mm wide & 25mm deep | Concrete, Stone & Porcelain | 24 hours | Grey Black Buff | |
Pour onto paving and brush in with a soft-bristle brush | Minimum of 3mm wide & 25mm deep | Natural Stone, Concrete Setts & Stone Slabs | Natural Mid-grey Basalt Black | ||
Pour onto paving and brush in with a soft-bristle brush | Minimum of 3mm wide & 25mm deep | Porcelain | 12 hours | Buff Light Grey Mid Grey Basalt Black | |
Pour onto paving and brush in with a soft-bristle brush | Minimum of 3mm wide & 25mm deep | Natural Stone, Concrete Paving Slabs & Setts | 24 hours | Neutral Silver Grey | |
Pour onto paving and brush in with a soft-bristle brush | Minimum of 5mm wide & 30mm deep | 24 hours | Neutral Grey Basalt Light Grey | ||
Pour onto paving and brush in with a soft-bristle brush | Minimum of 3mm wide & 20mm deep | Natural Stone | 24 to 48 hours | Cosmic Black Natural Cashmere Storm Grey Pebble Grey | |
Pour onto paving and brush in with a soft-bristle brush | Minimum of 3mm wide & 20mm deep | Natural stone, porcelain, concrete, slate, clay, terracotta and granite. | 12 - 18 hours | Buff Sand Mushroom Stone Grey Basalt |
Factors to Consider When Choosing Brush-In Patio Grout
When it comes to laying a patio, several factors must be considered when selecting the correct type of brush-in grout to fill the gaps between your paving and complete the project.
Paving Slab Material – Whether you use porcelain, natural stone, or concrete, ensure you select a brush-in grout suited to your material.
Type of Paving Slab – Patios come in all shapes and sizes, and you may require a higher quantity of grout for intricate cobble setts vs large stone slabs.
Patio Use – High traffic areas may require a stronger compound with a longer lifespan, whereas small, untouched areas can last with a standard, all-weather grout.
Size of the Area – A large patio will require more grout to seal the joints. Look for a brush-in grout that adequately covers the area while staying within budget.
Grout Colour – With a range of coloured grouts available, you can find the shade that blends in or stands out depending on the finished look you want.
Project Timeline – If you’re on a tight timeline, look for brush-in grouts with quick drying and curing times, as well as walk-on times, such as ProJoint RapidFlow.
How Much You Need – Each of our brush-in grout products has a handy calculator to help you determine how much grout is needed to cover the area and joint depths.
The Long-term Benefits of Using the Right Patio Grout
Preserves the condition & lifespan of your patio
Creates a neat & professional finish
Strengthens your patio
Prevents weeds from growing through the gaps
Offers minimal cleaning & maintenance
A cost-effective & durable solution
Excess product can be stored up to 12 months in a cold, dry location
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If you need any help or advice when placing a patio and paving grout order, don’t hesitate to contact us at 01604 859800, or via email at [email protected].