Pro Tiler Tools

What’s The Best Brush-In Patio Grout?

04/07/2025

Choosing 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

Joint-It Simple

Pour onto paving and brush in with a soft-bristle brush

Minimum of 3mm wide & 25mm deep

Stone & Porcelain

Sand

Grey

Dark Grey

Black

ProPave Grout All-Weather

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

Larsen Brush-Joint360

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

ProJoint Fusion All-Weather

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

ProJoint RapidFlow Brush-In Porcelain Grout

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

ProJoint PolySweep Polymeric Block Paving Sand

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

MapePave Brush-in Grout

Pour onto paving and brush in with a soft-bristle brush

Minimum of 5mm wide & 30mm deep

24 hours

Neutral

Grey

Basalt

Light Grey

UltraScape Premjoint All-Weather Brush-In

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

Azpects EASYJoint

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].