Help Centre
Real answers to real questions -- search or browse by category below.
Help Centre
Straight answers to the questions Melbourne homeowners, builders and developers ask most about concrete, excavation, foundations and retaining walls.
Browse 609+ answered questions.
All Questions
Can a concrete driveway be poured over an old one?
Sometimes, but it depends entirely on your existing driveway's condition — this isn't a default recommendation, since pouring new concrete over a…
Read Answer Concrete DrivewaysHow wide should a concrete driveway be for one car?
A single-car driveway is commonly around 3 to 3.3 metres wide, giving comfortable clearance for opening doors and manoeuvring, though the exact…
Read Answer Waffle SlabsIs a waffle slab suitable for reactive clay soil?
Yes — waffle slabs are specifically designed for reactive clay soil, and are one of the most common foundation systems used across…
Read Answer Waffle SlabsWhy are waffle pods used in a waffle slab?
Waffle pods are lightweight void-forming units placed in a grid beneath a waffle slab, creating a ribbed structure of concrete beams running…
Read Answer Raft SlabsIs a raft slab more expensive than a waffle slab?
There's no fixed answer — cost comparison between raft and waffle slabs depends heavily on your specific site's soil classification and size,…
Read Answer Raft SlabsWhat soil conditions require a raft slab?
A raft slab is generally suited to sites with more stable, less reactive soil — where a single thickened, well-reinforced slab can…
Read Answer House SlabsDoes a new house slab need council approval?
A new house slab needs a building permit, which in Victoria is issued by a registered building surveyor — not directly by…
Read Answer House SlabsWhat’s the difference between a house slab and a standard concrete slab?
A house slab is a genuinely different proposition to a standard concrete slab, even though both are technically "concrete slabs." A house…
Read Answer House SlabsDo I need a soil report before building a house slab?
Yes. A soil report is a required, essential first step before any residential house slab is designed in Victoria — it's not…
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