Buildfix Commercial · Commercial buildings and facilities
Cracked walls? Sloping floors? Your asset, stabilised.
No digging. The building stays occupied.
Commercial underpinning with GeoPoly™: the resin is injected beneath the footings, compacts the ground, stops the movement and lifts the structure back to level — engineer-designed, done in days not months, with tenants and staff inside throughout.
- Tenants and staff stay in the building throughout
- Close cracks, level floors
- 20-year product and workmanship warranty
Structural Engineers · Licensed Builders · Skilled Technicians
Solutions
Commercial underpinning that keeps the building open.
Firm the ground. Stop the movement. Lift the footings. Nobody moves out.
Why the building is moving
A corner of the building that has dropped. Stepped cracks running through the brickwork, doors that have stopped closing, a floor-level survey that reads 40 mm low along one wall. Commercial foundation repair starts in the ground, not the wall: reactive clay shrinking through dry months, fill washing out beneath the footings, tree roots drawing moisture from under one side of the building and not the other.
The conventional fix
Traditional underpinning: trenches dug beside the footings, mass concrete poured in stages, each one cured before the next, with engineers, certifiers and contractors on site for months and the tenants somewhere else. It works. For an occupied building the move-out usually costs more than the concrete.
How GeoPoly™ underpins it
Commercial underpinning with GeoPoly™ GER60 underpins the building from the ground beneath it. Tubes are driven to 3 metres beside and under the footings through 16–20 mm holes; the resin goes in as a liquid, fills the voids, compacts the soil and — once the ground pushes back harder than the building weighs — lifts the footing against laser levels to the engineer’s target. Nothing is dug out. The building is supported from the moment the resin sets.
Walls reconnected
Stopping the ground is half the job. Building structural repairs finish it: where the walls cracked above the footings, HelicalBar™ stainless bars are set into the mortar joints across the crack and well past it, and structural crack repair with HelicalBar™ reconnects the masonry so the loads after the lift are carried evenly again. On a heritage building the lift is set for the building’s age and the finish is matched to the original.
What it costs
Every job is quoted as one fixed price after the site assessment. The void below the ground is the one unknown, so the price is estimated from experience and the averages of thousands of jobs, and it does not move if the resin runs over. No per-kilo pricing, no allowances.
If you own or manage a commercial building, or hold it for a council, a department or a portfolio, these are the jobs Buildfix does with the building occupied, without the trenches. Book a site assessment and the dates come back by email, or call 1300 854 115 and talk it through with an engineer first. Your call.
Structural Engineers · Licensed Builders · Skilled Technicians
CSIRO · Black Mountain, ACT
Research facility slabs lifted 40 mm in two days
Heritage school · Berwick, VIC
Fire station · Camp Hill, QLDCommercial case studies
Commercial buildings stabilised and relevelled, on the record.
A national research facility, a 95-year-old school building, a fire station, a heritage wall for a council and a 1920s apartment block. Footings lifted and walls reconnected for government agencies, departments and owners corporations. Tap a card to read one.
Ground engineering technologies
Commercial-grade engineered resins that lead the industry.
GeoPoly™ is a family of ground engineering resins formulated, blended and batch-tested by Buildfix. Density, expansion, compressive strength and set time are measured on every batch by the Buildfix chemists who made it, in the Buildfix lab, so the material specified for a job is the material that goes into the ground.
Because the formulation is Buildfix's own, the right resin goes on the right job — a denser grade under a trafficked slab, a slower rise under a light pier, a batch for deep voids. Read the data sheets below. On this page the grade is GER60 — the ground engineering resin, injected to 3 metres beneath the footings.
Batch-tested.
Every batch is measured for density, expansion, strength and set in the Buildfix lab before it leaves the facility.
Three grades, one range.
SJ120 for trafficked slabs, GER60 for deep foundations, PSR30 for piers. Each formulated for its load and its ground.
Warranted by the manufacturer.
A 20-year product and workmanship warranty from the company that formulated the resin and carried out the work.
Operations centre · Seven Hills
GeoPoly™ SJ120, curedProject delivery
From site assessment to completion pack.
How a commercial job runs with Buildfix — one engineer-led team from the first visit to the warranty certificate, and the site trading throughout.
Step 1Site assessment by a structural engineer
A structural engineer, not a sales rep, walks the site: floor levels, slab edges, footings, drainage and services. The cause is named on the day and the repair is designed around how your site operates, not the other way round.
Step 2Engineering design and fixed-price scope
A written scope with the repair detail, a method statement and one fixed price. No per-kilo resin charges, no allowances, no variation when the voids run bigger than estimated. The quote is the invoice.
Step 3Services located, site set up
Underground services are located and marked and the drainage inspected by CCTV before a hole is drilled. Each morning starts with a pre-work safety check, a brief and the SWMS. Work areas are cordoned off, foot traffic is diverted to safer paths where there are any, and the work is staged in zones so the site keeps trading around the crew.
Step 4Injection and laser-monitored lift
GeoPoly™ goes in through 10–20 mm holes and the slab lifts against laser levels, millimetre by millimetre, to the engineer's target. Trafficable 30 minutes after the lift — forklifts, trucks and the public included.
Step 5Verification and completion pack
Levels are re-checked at every station before the crew leaves. The completion pack follows: the technicians' site report, the before-and-after record — levels and photos — and the 20-year product and workmanship warranty certificate. Three documents, one company's name on all of them.
Backed for 20 years.
Product and workmanship warranty, in writing, on every repair.
Backed for 20 years.
Product and workmanship warranty, in writing, on every repair.
With Buildfix, your repair is backed for 20 years, labour and materials. If the issue returns, so does Buildfix — at no cost to you.
Structural Engineers · Licensed Builders · Skilled Technicians
Clients and partners
Trusted by
Councils, government agencies, builders and property groups — the organisations whose buildings and sites Buildfix has lifted, levelled and repaired.
Brisbane City Council
Royal Australian Air Force
Mirvac
NSW Ambulance
Built
Uniting Church in Australia
Endeavour Energy
CSIRO
Urban Property Group
Cordina Farms
Managing a portfolio, or a pipeline of sites?
A partner account gives your business 30-day terms, a dedicated structural engineer, an assigned account manager and access to the job management portal — across NSW, VIC, QLD and the ACT.
- 15,000+
- Jobs completed since 2011
- 20-year
- Product and workmanship warranty
- $20M
- Public liability insurance
- 1,504
- Five-star reviews
Questions?
The questions engineers, asset managers and business owners ask before a commercial job. Monday to Friday, 8am to 5pm AEST on 1300 854 115.
Need a site assessed?
Levels measured, cause identified, and a written scope with a fixed price. Site assessments are free.
Call 1300 854 115Structural Engineers · Licensed Builders · Skilled Technicians
Buildfix Commercial
Get in touch with us.
Book an assessment online or call us to discuss your structural issues. Our team is here to help.
- Office hours
- Monday to Friday, 8am to 5pm AEST
- Service area
- Sydney · Melbourne · Brisbane · Canberra