Subfloor preparation in Melbourne
Most flooring failures start below the surface. Poor preparation voids warranties and generates callbacks. We treat subfloors as a professional discipline : not an afterthought before boards arrive.
Liability sits in the substrate
Manufacturers publish flatness and moisture limits for a reason. When those limits are ignored, product performance claims no longer apply : and the dispute lands with whoever signed off the base. We document readings, recommend remediation, and only proceed when the substrate fits the system you are installing.
For builders, that means fewer defects at PCI. For retailers, it means your client sees the floor perform as sold. For project managers, it means one accountable preparatory scope rather than finger-pointing between trades.
What is involved
Mechanical preparation, grinding high points, filling low areas, and moisture management systems where slabs exceed product limits. We select levelling compounds and primers compatible with your nominated adhesive or click system : not generic bags applied without a compatibility check.
On timber platforms, we assess sheet stiffness, fixings, and movement before overlay products are specified. Where required, we coordinate with structural advice before cover goes down.
What to expect
Written pre-start criteria, progress photos where your superintendent requires them, and a signed-off base ready for the finishing trade. If latent slab issues appear mid-programme, we report immediately with remediation options and programme impact.
Benefits for your project
- Warranty-aligned substrates documented before flooring installs
- Reduced callback risk from movement, hollow sound, or adhesive failure
- Single preparatory scope paired with Holtz installation packages
Frequently asked questions
Who is responsible if moisture readings fail after the slab was “dry enough” visually?
Decisions must follow measured data and manufacturer limits, not appearance. We stop and advise if readings sit outside specification. Proceeding without remediation shifts risk to the party authorising the override : we document the position before any waiver.
Can preparation be quoted separately from installation?
Yes. Many builders prefer a discrete preparatory package once slabs are placed and services are roughed in. Share drawings and test results : we price the scope required to meet your nominated flooring system.
Do you work to Australian Standard expectations for surface regularity?
We align to the project specification, which may reference AS criteria for slabs or substrates, and always to the flooring manufacturer’s stated tolerances : whichever is more stringent for the product you are installing.