Nil Exposure (Cream)
Pure cement paste finish — no aggregate visible. Soft, uniform appearance with a stone-like character. Ideal for minimalist interiors where the floor reads as a calm, monolithic surface.
Grind & Seal Sydney
Premium grind & seal concrete floors across Sydney — a cost-effective alternative to mechanically polished concrete that delivers a stunning, hard-wearing, low-maintenance finish for homes, garages, alfresco areas, retail, hospitality and industrial slabs. Mechanically ground to your chosen aggregate exposure, then sealed with a high-performance topical sealer in matte, satin, semi-gloss or high-gloss. Free on-site assessment, dust-controlled grinding and a fixed written quote — call Ausgrind today.
- 5-Star Google Rated
- Fully Insured
- Dust-Controlled Grinding
- Satisfaction Guaranteed
- Residential • Commercial • Industrial
About this service
Grind & seal is a hybrid concrete flooring system that combines mechanical diamond grinding with a high-performance topical sealer. The slab is ground to expose the surface — anywhere from a light cream finish through to full aggregate — then sealed with a water-based or solvent-based acrylic, polyurethane or polyaspartic coating in your chosen sheen. The result is a durable, attractive, easy-to-clean concrete floor that captures most of the look of fully polished concrete at a fraction of the cost.
Unlike mechanically polished concrete — which uses progressive diamond resin tooling and densifier to refine the slab itself into the finished surface — grind & seal relies on a topical sealer to deliver the gloss, stain resistance and colour enhancement. That single difference is why grind & seal is faster to install, more forgiving of older or softer slabs, and meaningfully cheaper per square metre. It also opens up finishes that aren't possible with mechanical polishing alone: low-sheen matte alfresco floors, UV-stable outdoor finishes, anti-slip pool surrounds and high-build gloss showroom floors.
Grind & seal works beautifully on new slabs and is the go-to choice for renovations where the existing concrete has character, minor cracks or surface imperfections. The grinding stage removes paint, glue, tile beds, carpet adhesive, laitance and minor coatings, and the sealer then unifies the appearance — hiding small blemishes that would otherwise show through a polished finish. For homeowners refreshing a 1970s slab or a builder turning over a tired warehouse, grind & seal is often the highest-value option on the table.
A correctly installed grind & seal floor in Sydney typically lasts 5–10 years before resealing — longer indoors, shorter on driveways and high-UV alfresco areas. Maintenance is minimal: a weekly sweep or vacuum, a damp mop with a neutral pH cleaner, and a recoat every few years to refresh the sheen. There's no grout to scrub, no carpet to replace, no timber to recoat. And because the sealer sits on top of the slab rather than being part of it, the floor can be recoated in place without grinding again — meaning the total cost of ownership over 20 years is very competitive.
Suitable applications include residential living areas, kitchens, garages, basements, alfresco areas, patios, pool surrounds and driveways; commercial cafés, restaurants, retail tenancies, offices and showrooms; and industrial warehouses, workshops, storage facilities and food-production environments. The available finishes range from a soft matte cream through to a brilliant high-gloss aggregate-exposure floor, with anti-slip additives available for wet areas and pedestrian zones.
The main advantages of grind & seal are cost, speed, flexibility and forgivability. The main limitations are that the sealer is a topical layer (it can be scratched and will eventually wear in high-traffic walkways) and that it needs periodic recoating. For most Sydney residential and light-commercial projects, those trade-offs are easy to accept — particularly when the alternative is a polished concrete floor at nearly double the cost. Ausgrind will give you honest advice on which system suits your slab, your budget and the way the floor will actually be used.
Why choose this service
- Significantly more affordable than mechanically polished concrete
- Faster installation — most residential jobs complete in 2–4 days
- Choice of matte, satin, semi-gloss or high-gloss sheen
- Hides minor cracks, blemishes and slab imperfections
- Works on new, old, painted and previously coated slabs
- Anti-slip additives available for wet and outdoor areas
- UV-stable sealer options for alfresco, pool surrounds and driveways
- Recoat-friendly — refresh the floor without grinding again
- Dust-controlled HEPA grinding process — safe for occupied homes
- Excellent long-term value for owner-occupiers, builders and landlords
Where we use it
- Residential homes, kitchens and living areas
- Garages, basements and storage areas
- Alfresco areas, patios and pool surrounds
- Driveways and outdoor entertaining zones
- Retail tenancies, showrooms and shopfronts
- Cafés, restaurants and hospitality venues
- Offices, fit-outs and workspaces
- Warehouses, workshops and industrial facilities
- Storage facilities and distribution centres
- Investment properties and rental refurbishments
Aggregate exposure levels
Grind & seal floors can be ground to four distinct exposure levels before sealing — each revealing a different amount of aggregate. Deeper exposure means more grinding passes and a more decorative finish.
Salt & Pepper
Light grind that exposes the fine sand and small stones near the surface. The most popular residential finish — visually interesting without dominating the room.
Medium Exposure
Deeper grind revealing a balanced mix of fines and small aggregate. A great fit for cafés, showrooms and gyms where character and durability matter.
Full Aggregate Exposure
Deepest grind — large stones are fully exposed, giving a terrazzo-like statement floor. Stunning in showrooms, hospitality venues and architectural homes.
Choose your sheen
Grind & seal sealers are available in four sheen levels. Higher gloss reflects more light and enhances colour but shows scratches more readily; lower gloss hides marks and offers better slip resistance — particularly important for wet and outdoor areas.
Matte
Soft, low-reflection finish that hides marks and footprints. Best for residential living areas and high-traffic homes.
Best slip rating
Satin
Subtle sheen with light reflection. A balanced everyday finish for homes, cafés and offices.
High slip resistance
Semi-Gloss
Noticeable shine that lifts a room and reflects natural light. Common in retail, showrooms and modern kitchens.
Moderate slip resistance
High-Gloss
Mirror-like reflection that maximises brightness. The signature showroom finish — striking, premium and easy to clean.
Lower slip resistance when wet
Where grind & seal works best
Residential
- Garages and basements
- Homes and renovations
- Driveways and pathways
- Patios and alfresco areas
Commercial
- Retail tenancies and fit-outs
- Offices and workspaces
- Restaurants, cafés and hospitality
- Shopping centres and showrooms
Industrial
- Warehouses and distribution centres
- Factories and manufacturing
- Workshops and mechanical bays
- Cold rooms and food production
Grind & seal vs polished concrete
Both systems start with mechanical grinding — the difference is what happens after. Use this guide to decide which finish suits your slab and budget.
| Factor | Grind & Seal | Polished Concrete |
|---|---|---|
| Installation cost | Lower — typically 30–50% cheaper | Higher — premium architectural finish |
| Installation time | Faster — 2–4 days residential | Slower — 4–7+ days residential |
| Lifespan | 5–10 years between recoats | Decades — slab is the finish |
| Maintenance | Sweep, mop, recoat every 3–5 yrs | Sweep, mop, occasional re-burnish |
| Appearance | Topical sheen — flexible finishes | Refined, hand-polished slab |
| Stain resistance | Excellent (topical sealer) | Very good (penetrating guard) |
| Scratch resistance | Sealer can scratch over time | Slab itself — extremely durable |
| Repairability | Easy — recoat in place | Spot repairs need re-polishing |
| Best for | Garages, alfresco, renos, budget jobs | Architectural homes, showrooms, retail |
How we deliver
- 01
Site Inspection
Free on-site assessment of slab condition, contaminants, moisture, cracks and the look you're after. Fixed written quote follows.
- 02
Concrete Repairs
Cracks stitched with polyurea, holes patched with colour-matched compound, and damaged areas repaired so the slab is ready for grinding.
- 03
Mechanical Grinding
Diamond grinding to remove paint, glue, laitance, coatings and contaminants and to achieve your chosen aggregate exposure — nil (cream), salt & pepper, medium or full.
- 04
Surface Cleaning
Full HEPA dust extraction, wash-down and decontamination so the slab is bone-clean before sealing.
- 05
Optional Densifier
Lithium silicate densifier applied to soft or porous slabs — hardens the surface, reduces dusting and improves sealer adhesion.
- 06
Sealer Application
Two or more coats of your chosen sealer — penetrating, acrylic, polyurethane or polyaspartic — in matte, satin, semi-gloss or high-gloss. Adds stain resistance, colour enhancement and easy cleaning.
- 07
Final Inspection
Walk-through with you to confirm finish, sheen and edges. Floor swept clean and care instructions handed over.
At a glance
- Aggregate exposure
- Nil (cream), salt & pepper, medium or full
- Sheen options
- Matte, satin, semi-gloss or high-gloss
- Sealer types
- Penetrating, acrylic, polyurethane or polyaspartic
- Anti-slip
- Aluminium-oxide or polymer bead additive available
- Indoor or outdoor
- Both — UV-stable sealers for outdoor use
- Typical lifespan
- 5–10 years between recoats
- Turnaround
- 2–4 days for most residential jobs
- Walk-on time
- Light foot traffic after 24 hours
- Vehicle traffic
- Typically 5–7 days after final coat
Slab suitability guide
Almost every concrete slab in Sydney can be transformed — but the right approach depends on the slab's history and condition. Here's what we typically see:
- New concrete
- Ideal — wait for the slab to cure (typically 28 days) before polishing.
- Old concrete
- Almost always polishable. Achievable exposure depends on the slab condition.
- Painted concrete
- Paint is fully removed during the grinding stage at no extra cost in most cases.
- Epoxy-coated floors
- Existing epoxy is ground off mechanically before polishing — no chemicals required.
- Glue residue (tile / carpet)
- Tile beds and adhesive are removed during preparation. Standard inclusion.
- Tile removal
- We can lift tiles, remove the bed and polish the slab beneath as a single package.
- Carpet removal
- Carpet and underlay glue are removed during preparation.
- Uneven concrete
- Aggressive grinding flattens minor variations. Major levelling is quoted separately.
- Cracks
- Stitched with polyurea and filled with colour-matched compound prior to polishing.
- Soft concrete
- Densifier hardens the surface significantly — soft slabs are often better suited to grind & seal.
- Water damage
- Assessed case-by-case. Surface damage is often polishable; structural damage may need repair first.
What it costs
Grind & seal is the most cost-effective polished-look concrete finish available in Sydney — typically 30–50% cheaper than mechanically polished concrete for the same slab. Final pricing depends on slab condition, square metres, aggregate exposure, sealer type, repairs required and site access. After a free on-site assessment we provide a fixed written quote covering every step from grinding through to the final coat.
Final pricing depends on:
- Total square metres
- Slab condition and contaminants
- Aggregate exposure chosen
- Sealer type (acrylic, polyurethane, polyaspartic)
- Sheen level (matte through to high-gloss)
- Number of rooms, corners and stairs
- Crack and surface repairs required
- Anti-slip additives
- Indoor or outdoor (UV-stable sealer)
- Site access and parking
Why customers pick us
- 5-star Google rated, fully insured Sydney specialists
- Premium HTC and Husqvarna planetary grinders for flat, even results
- True HEPA dust extraction — safe for occupied homes and businesses
- Quality sealers from established Australian suppliers
- Honest advice on whether grind & seal or full polish suits your slab
- Fixed written quotes — no surprises mid-job
- Recoat-friendly system — easy to refresh in future
- Residential, commercial and industrial experience across Sydney
Recent projects
Sydney-wide coverage
We service all of Sydney for grind & seal — including:
Common questions
Grind & seal is a hybrid concrete finish that combines mechanical diamond grinding to expose the surface (and your chosen amount of aggregate) with a topical sealer that delivers gloss, stain resistance and colour enhancement.
Ready to transform your concrete?
Whether it's a single garage or a 5,000m² warehouse, Ausgrind delivers reliable communication and a high-quality finish. Speak to Nico & Craig directly.
Request a Free On-Site Assessment
Free, no-obligation quote. We respond within 1 business day.