Exposed Aggregate vs Broom Finish: Which Is Better for Mandurah Homes?

Quick answer: For most Mandurah homes, broom finish is the better value choice for budget, grip and simplicity, while exposed aggregate is the better choice for a premium look, stain hiding and long-term appeal. Broom finish typically costs around $85 to $120 per square metre and exposed aggregate around $120 to $180 per square metre, based on published 2026 Western Australian pricing.

Neither finish is universally better. The right choice depends on your budget, the look of your home, how the surface will be used and how much maintenance you are happy to do.

Exposed Aggregate vs Broom Finish at a Glance

What Is a Broom Finish?

A broom finish is created by drawing a soft-bristled broom across freshly poured concrete after it has been floated. The bristles leave fine parallel lines that give the surface texture and traction. It is the most common finish for residential driveways, paths and outdoor areas in Australia.

Key features:

• Fine textured lines run across the surface.
• Grip is good even when the concrete is wet.
• It is the simplest and most economical decorative-free option.
• It can be combined with coloured concrete or a coloured sealer.
• Repairs are usually easy, though patches may show a slight colour difference.

What Is Exposed Aggregate Concrete?

Exposed aggregate concrete uses a mix containing decorative stones, such as pebbles, granite or quartz. After the concrete is poured and finished, the top layer of cement paste is removed, either by washing, brushing or using a surface retarder, to reveal the stones underneath. The surface is then usually sealed.

Key features:

• The stones create a natural, textured, pebble-like look.
• Colour and style depend on the aggregate chosen, so each driveway can look unique.
• The surface is hard-wearing and gives strong traction.
• It hides oil marks, tyre marks and leaf stains well.
• Installation requires more skill and timing, which raises cost.

Cost Comparison: Broom vs Exposed Aggregate in Mandurah

Pricing varies by contractor, site and timing, but recent Western Australian cost guides place broom finish around $85 to $120 per square metre and exposed aggregate around $120 to $180 per square metre, supplied and laid.

These are planning figures, not quotes. Always request written quotes from local concreters, and ask whether sealing is included.

Why exposed aggregate costs more:

• Special aggregate mixes cost more per cubic metre.
• Timing is critical, so more skilled labour is needed.
• Washing off creates extra work and water management.
• Sealing is usually recommended.
• Mistakes are harder to fix.

Appearance: Which Looks Better?

Appearance is subjective, but there are some clear style differences.

Broom finish suits modern, minimalist and practical homes. In light grey or charcoal, it looks clean and understated. It works well when you want the house, landscaping or pavers to be the focus.

Exposed aggregate adds texture, depth and character. It suits coastal, contemporary and classic homes and works well on feature driveways, entries and alfresco areas. Stone colours can complement brickwork, roof tiles and garden beds.

In Mandurah, where many homes have light render, coastal palettes and landscaped verges, both finishes can look excellent. Exposed aggregate in sandy, grey or off-white tones is a popular choice for a premium coastal look.

Slip Resistance and Safety

Safety matters on driveways and entries, especially where rain, sprinklers or pool water make surfaces wet.

• Broom finish gives reliable grip because the lines channel water and create texture. Heavier brooming increases traction but can look rougher.
• Exposed aggregate provides strong traction from the stones themselves. However, very smooth or highly polished aggregate surfaces and some sealers can become slippery, so ask for a slip-resistant sealer.

For pool surrounds and steep driveways, ask your concreter about slip-resistance ratings and suitable finishes.

Heat and Comfort in Summer

Mandurah summers are hot, and surface temperature affects comfort for bare feet and pets.

• Lighter colours reflect more heat and stay cooler.
• Dark broom finishes can get hot in direct sun.
• Exposed aggregate surfaces often feel slightly cooler than smooth concrete because texture and stone colour disperse heat, though results depend on the aggregate.
• Shade from trees, pergolas and nearby buildings reduces surface temperatures for both finishes.

If barefoot comfort matters around alfresco or pool areas, choose lighter tones and test samples in the sun.

Durability and Lifespan

Both finishes are made from the same basic concrete and can last 25 to 30 years or more when installed correctly. Durability depends more on base preparation, thickness, reinforcement, concrete strength, curing and joints than on the surface finish.

Exposed aggregate has a practical advantage in that it resists wear and hides minor surface marks. Broom finish can show tyre marks and stains more easily over time but remains very durable.

In coastal conditions near the estuary or ocean, both finishes benefit from correct reinforcement cover, good drainage and quality sealing to resist salt exposure.

Maintenance Requirements

Tips for exposed aggregate:

• Seal after curing, usually after about 28 days or as advised.
• Reseal every few years to protect stones and refresh colour.
• Use a gentle pressure setting to avoid dislodging stones.
• Sweep leaves and debris to prevent staining.

Tips for broom finish:

• Wash periodically with mild detergent.
• Treat oil and rust stains quickly.
• Consider a sealer for added stain resistance and colour enhancement.

Installation: What Is Different?

Both finishes start with the same preparation: excavation, compacted base, formwork, reinforcement and concrete delivery. The difference comes at the finishing stage.

Broom finish:

1. Concrete is screeded and floated.
2. A broom is drawn across the surface at the right moment.
3. Control joints are cut and the slab is cured.

Exposed aggregate:

1. Aggregate-rich concrete is placed and screeded.
2. The surface is floated and sometimes treated with a retarder.
3. At the right time, the top layer of paste is washed or brushed off to reveal the stones.
4. The slab is cured, joints are cut and the surface is sealed.

Exposed aggregate is more time-sensitive. In Western Australia’s summer heat, concrete sets quickly, so crews must plan carefully and often work early in the day. Poor timing can lead to patchy results, loose stones or uneven texture. Always choose a contractor who can show completed exposed aggregate driveways.

Which Finish Is Better for Different Situations?

Questions to Ask Before You Choose

• Can I see completed examples of both finishes in Mandurah?
• Is sealing included in the price, and which sealer do you use?
• How do you manage timing and washing off in summer heat?
• What aggregate colours and sizes can I choose?
• How will the finish perform in wet conditions?
• What maintenance do you recommend over the next ten years?
• What warranty applies to the finish?

Frequently Asked Questions

Is exposed aggregate better than a broom finish?

Neither is better in every case. Exposed aggregate looks more premium and hides stains, while broom finish is cheaper, simpler and easier to repair.

How much more does exposed aggregate cost?

In Western Australia, it typically costs about $30 to $60 more per square metre than a plain broom finish, though prices vary.

Is exposed aggregate slippery when wet?

Usually not, because the stones provide traction. Some sealers can reduce grip, so ask for a slip-resistant product.

Does exposed aggregate need sealing?

Sealing is strongly recommended to protect the surface, enhance colour and resist stains. Reseal every few years.

Which finish lasts longer?

Both can last 25 to 30 years or more. Durability depends mostly on base preparation, thickness, reinforcement and curing.

Which finish is cooler in summer?

Lighter colours are cooler for both. Exposed aggregate often feels slightly cooler than smooth surfaces, but results depend on stone colour and sun exposure.

Can exposed aggregate be repaired?

Yes, but matching stones and colour can be difficult. Broom finish is usually easier to patch.

Which is better for resale value?

Exposed aggregate is often viewed as a premium feature, but a clean, well-built broom finish driveway is also attractive to buyers.

Final Thoughts

Choose broom finish if you want a cost-effective, practical and low-maintenance driveway with reliable grip. Choose exposed aggregate if you want a premium look, strong stain camouflage and a surface that stands out. Both can perform well in Mandurah when the base is compacted, the slab is reinforced, the mix suits the conditions and the pour is cured properly.

Ask local concreters for photos of completed work, compare written quotes and request samples where possible. The best finish is the one that suits your home, your budget and the way you live, installed by a team that knows how to handle Western Australia’s heat, sandy soils and coastal conditions.