GeoPoly technology logo

Our Technology

GeoPoly™ PSR30

Geopolymer resin that stabilises sinking floor piers and relevels timber floors — without removing floorboards or replacing piers. Done in 1–2 days.

The resin that relevels floors without replacing piers

GeoPoly™ PSR30 is Buildfix's pier stabilisation resin — a geopolymer (that's what the P in PSR stands for) injected into the ground around sinking stumps and piers beneath timber floors. It's the technology behind Buildfix's floor pier repairs and stump lifting solutions. As the resin expands, it compacts the soil and lifts each pier back into firm contact with the bearer above. Floors level out, bounce stops, doors close properly again. Done in 1–2 days, through holes smaller than a two-dollar coin.

The old approach? Rip up floorboards, jack up the house, pull out every pier, pour new concrete footings, and drop in new stumps. Weeks of work, tens of thousands of dollars — and the new piers sit on the same failed ground that caused the problem in the first place. GeoPoly™ PSR30 fixes the ground, not just the pier. The resin expands to 15 times its volume, sets in 90 seconds, and creates a permanent, load-bearing mass beneath each stump.

Not sure what’s causing your floors to sink?

Get your piers checked out. It’s free, and you’ll know exactly what’s causing the movement.

See our work

Behind the performance

Tap any spec to learn what it means for your home.

Geopolymer Resin

Material

GeoPoly™ PSR30 is a geopolymer — not a polyurethane foam. It’s mineral-based, cures into a solid, rock-like mass underground, and won’t degrade, shrink, or wash away over time. That’s why the repair lasts.

See the difference

Real homes. Real repairs. Piers stabilised and floors relevelled with GeoPoly™ PSR30.

Sinking brick pier re-levelled with GeoPoly before and after
Skirting board gap closed after floor re-levelling before and after
Concrete pier stabilised beneath subfloor before and after
Sinking floor lifted back to level at skirting board before and after
Floor gap at wall closed after pier repair before and after
Subfloor pier and bearer re-supported before and after
Sinking pier causing uneven floor repaired before and after
Floor pier settlement corrected before and after
Pier gap closed with GeoPoly resin injection before and after
Sinking floor pier stabilisation before and after

Instant results.
Guaranteed to last.

What makes GeoPoly™ PSR30 different from full pier replacement.

GeoPoly™ PSR30 is a pier-specific resin formulation — injected beside each affected pier through coin-sized holes. It compacts the soil, fills voids, and lifts the pier back into contact with the bearer above. Homeowners typically see the floor levelling out within minutes.

GeoPoly PSR30 resin expanding beneath floor pier to restore bearer contact

Real homes. Real repairs.

Timber floors stabilised and relevelled with GeoPoly™ PSR30 resin injection.

Stumps Relevelled — No Restumping NeededHomeowner

Brighton East, VIC

Stumps Relevelled — No Restumping Needed

The concrete stumps were fine — the soil beneath them wasn’t. GeoPoly™ stabilised the ground and relevelled the floors in two days, saving this homeowner from a second full restumping job.

Read case study
Heritage Home Repaired Twice, Same TeamHomeowner

Strathfield, NSW

Heritage Home Repaired Twice, Same Team

When new cracks appeared in this 150-year-old Strathfield home, the owner didn’t hesitate — they called Buildfix again. Buildfix had already fixed the front of the house years earlier. This time, the team tackled the rear.

Read case study
New Kitchen Saved From a $50k RebuildHomeowner

O'Connor, ACT

New Kitchen Saved From a $50k Rebuild

A year after installing a new kitchen, it started pulling away from the wall. Local builders quoted $50,000 to fix it. Buildfix did it in four hours — without touching the kitchen.

Read case study
Jack-and-Pack Failed — Deep-Lift Fixed ItHomeowner

Kings Park, NSW

Jack-and-Pack Failed — Deep-Lift Fixed It

A previous jack-and-pack had failed. The living room floor had sunk 40mm. Buildfix’s deep-lift injection fixed it permanently in a single day — without dismantling a thing.

Read case study
Stumps Raised and Floors LevelledHomeowner

Southport, QLD

Stumps Raised and Floors Levelled

Sloping floors, cracked tiles, and sunken stumps — this investment property needed to be tenant-ready fast. GeoPoly™ got it done at a fraction of the cost of restumping.

Read case study
Floor Lifted 60mm — Renovation on TrackHomeowner

Prestons, NSW

Floor Lifted 60mm — Renovation on Track

A broken pipe had eroded the soil beneath this property’s piers, sinking floors by up to 60mm. Buildfix stabilised and relevelled everything in two days — not the two weeks expected.

Read case study
All of the Buildfix team have been easy to communicate with. Everyone was punctual and communicated arrival times well ahead of arrival.

Scott HolmesMelbourne, VIC

Questions?

Our team is here to answer any questions you may have Monday – Friday 8am to 4pm AEST. Give us a call on 1300 854 115.

Buildfix structural engineer discussing repair with homeowner

Get your floor levels measured.

Every pier is checked for contact with the bearer above. Takes 30–60 minutes. It’s free.

Structural Engineers · Licensed Builders · Skilled Technicians