Subfloor & Foundation Repair Melbourne West – Bearers, Joists & Stumps

What Does Subfloor Repair Include?

Subfloor repair is a broad term covering any structural work beneath the ground floor of a home. Depending on what our inspection reveals, your subfloor repair may include one or more of the following:

Bearer Replacement

Bearers are the large horizontal timbers (typically 100mm x 75mm or larger) that sit on top of stumps and support the floor joists. Over time, bearers can rot where they contact stumps, split from load stress, or sag between support points. We replace damaged bearers with new treated or hardwood timber specified for the span and load requirements of your home.

Joist Replacement and Sistering

Joists run perpendicular to bearers and directly support the floor. In subfloors with poor ventilation or persistent moisture, joists are particularly vulnerable to rot and termite attack. We replace failed joists or sister (bolt a new timber alongside) weakened ones to restore structural capacity.

Partial Stump Replacement

Not every home needs a full restump. If only a section of the subfloor has been affected — perhaps due to localised drainage issues or a leaking pipe — we can replace individual stumps without disturbing the rest of the house.

Subfloor Ventilation Improvement

Poor ventilation traps moisture beneath the home, accelerating rot in stumps, bearers, and joists. We assess airflow during every inspection and can install additional vents or clear blocked ones to improve air circulation and protect the subfloor long-term.

Termite Damage Repair

Termites cause extensive concealed damage to subfloor timbers across Melbourne's west. If a pest inspection has identified termite-damaged bearers, joists, or stumps, we remove and replace the affected timbers and install physical termite barriers (such as ant caps on stumps) as part of the repair.

Who Needs Subfloor Repair?

Subfloor repair is common among homeowners who:

- Have received a **building inspection report** flagging subfloor defects (often during a property purchase or pre-sale preparation) - Notice **localised soft spots or bouncing** in the floor rather than a whole-house slope - Smell **dampness or mould** coming from beneath the house - Have had **termite activity** identified in the subfloor - Want to **address specific damage** without committing to a full restump

Our Inspection and Quoting Process

We don't guess at subfloor problems from above the floor. Every assessment starts with a physical crawl-under inspection where we check every accessible stump, bearer, joist, and vent. We photograph the damage, explain our findings in plain language, and provide a fixed written quote that separates each element of the repair so you can see exactly what you're paying for.

Subfloor Repair Costs in Melbourne's West

Subfloor repair costs vary widely depending on the scope. Bearer and joist repairs typically range from $2,000 to $8,000 for a localised section. Partial stump replacement starts from around $3,000. A more comprehensive subfloor repair combining stumps, bearers, joists, and ventilation improvements may range from $8,000 to $20,000. All quotes are fixed.

Protect Your Home from the Ground Up

Your subfloor is the foundation of everything above it. Ignoring damage beneath the house leads to compounding problems — what starts as a single rotten bearer can escalate to widespread joist failure and a full restumping job. Early subfloor repair is always the more cost-effective path.