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

Plain & Coloured Concrete

Does plain concrete need less formwork than coloured concrete?

Genuinely, no — formwork is driven by the shape, edges and layout of the pour itself, not the concrete's colour, so a…

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Plain & Coloured Concrete

Can I choose a two-tone coloured concrete design?

Yes, genuinely achievable — two-tone designs are typically created using a saw-cut or formed division between zones, with each area poured or…

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Plain & Coloured Concrete

Does coloured concrete need a different curing compound to plain?

Often, yes — some standard curing compounds can genuinely affect coloured concrete's final appearance, so a compound specifically compatible with the chosen…

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Plain & Coloured Concrete

Can plain concrete be given a broom finish and a trowel finish in different areas?

Yes, genuinely achievable — different zones of the same pour (an internal patio versus an external path, for instance) can be finished…

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Exposed Aggregate

Does exposed aggregate stain more easily than plain concrete?

Genuinely, no — properly sealed exposed aggregate resists staining at least as well as plain concrete, and its textured surface can actually…

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Exposed Aggregate

Can I request a sample panel before committing to an exposed aggregate mix?

Yes, genuinely worth asking for — a small sample panel or a look at a previously completed job using the same stone…

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Exposed Aggregate

Does exposed aggregate need a different edge detail to plain concrete?

Often, yes — many exposed aggregate driveways use a plain concrete border or edge strip around the exposed section, both for a…

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Exposed Aggregate

Can exposed aggregate be used on a driveway with a steep grade?

Yes, genuinely well suited — exposed aggregate's textured surface provides real slip resistance that becomes particularly valuable on a steep grade, more…

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Concrete Driveways

Does a new driveway need to tie into existing council infrastructure?

Yes — a new driveway's crossover genuinely needs to properly meet the existing kerb, footpath and road, built to council's specific standards…

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Concrete Driveways

Can I choose a broom finish for just the driveway apron?

Yes — different sections of a driveway can genuinely have different finishes, with a broom finish on the crossover apron often chosen…

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Concrete Driveways

Does a shared driveway need separate titles or can it stay informal?

Not necessarily titles specifically, but a genuine written agreement (sometimes a registered easement) covering maintenance responsibility and access rights is strongly worth…

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Concrete Driveways

Can a driveway be built with a slight camber for drainage instead of a flat surface?

Yes, and it's genuinely standard practice — a subtle fall or camber across a driveway's width or length helps water shed properly…

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Waffle Slabs

Does a waffle slab need a different termite treatment to a raft slab?

The treatment principle is the same — a chemical or physical termite barrier installed as part of the slab system — but…

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Waffle Slabs

Can waffle pods be different depths on the same slab?

Yes, genuinely common — pod depth is specified per zone based on load and soil conditions across your site, so a genuinely…

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Waffle Slabs

Does a waffle slab need additional bracing during the pour?

Yes — the formwork and pods need genuine bracing to resist the wet concrete's weight and pressure during the pour, stopping pods…

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Waffle Slabs

Can a waffle slab be built on a site with a high water table?

It can, but genuinely needs careful engineering — a high water table affects how the void beneath the pods behaves and can…

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Raft Slabs

Does raft slab thickness vary across a single pour?

Yes, genuinely common — edge beams and areas under load-bearing walls are typically thickened compared to the main body of the slab,…

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Raft Slabs

Can a raft slab be inspected by an independent building inspector before handover?

Yes — engaging your own independent building inspector is genuinely your right, separate from any inspections your contractor or engineer carries out…

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Raft Slabs

Does a raft slab need a perimeter drain as well as internal drainage?

Often, yes — a perimeter drain around the slab's edge genuinely helps manage surface water before it can pool against the foundation,…

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Raft Slabs

Can a raft slab be used under a tilt-up or precast home?

Yes — a raft slab can genuinely support precast or tilt-up construction, provided the design accounts for the specific point loads these…

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House Slabs

Can a house slab be built on a corner block with two road frontages?

Yes — the slab itself isn't fundamentally different, but a corner block genuinely brings extra design considerations, like two separate street setbacks…

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House Slabs

Does a house slab curing schedule change between summer and winter?

Yes, genuinely — warmer weather speeds up curing, so contractors often apply curing compounds or extra watering sooner to stop the surface…

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House Slabs

Can a house slab be poured around existing plumbing stubs?

Yes — this is genuinely standard practice, with plumbing stub-ups positioned and protected before the pour according to your approved plumbing plan,…

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House Slabs

Does a house slab need a different design for a home with a basement?

Yes, genuinely a different design exercise — a basement means retaining walls, waterproofing, and a foundation designed to resist ongoing soil and…

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Builder Guides

Can a builder switch concrete subcontractors mid-project if needed?

Yes, though it's genuinely disruptive — a new subcontractor needs to review what's already been done, confirm it meets the engineering specification,…

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Builder Guides

Does a builder need to provide engineering drawings to the concrete subcontractor upfront?

Yes, genuinely essential — a concrete subcontractor can't accurately price or plan a slab, retaining wall or foundation without the certified engineering…

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Builder Guides

Can a builder request a concrete subcontractor attend a pre-start meeting?

Yes, and it's genuinely good practice — a pre-start meeting lets the builder and concrete subcontractor align on program, access, engineering requirements…

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Homeowner Guides

What’s a reasonable way to raise a concern with my contractor mid-project?

Raising it directly and early with your contractor or site supervisor is genuinely the most effective first step — most concerns are…

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Homeowner Guides

Is it normal for a concrete project timeline to change once work starts?

Yes, genuinely common — weather, ground conditions that differ slightly from what a soil report predicted, or approvals taking longer than expected…

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Homeowner Guides

Should I photograph my property before work begins, for my own records?

Yes, genuinely a good habit — dated photos of your fences, paving, garden and any existing structures give you your own reference…

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Construction Process

What happens if a scheduled pour is cancelled at short notice?

Genuinely, this is almost always weather-driven rather than arbitrary — most last-minute cancellations happen because rain or extreme heat would compromise the…

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Construction Process

Can I request a specific crew if I’ve worked with them before?

It's genuinely worth asking, and many contractors will try to accommodate it where scheduling allows, particularly for a repeat client who already…

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Construction Process

Does a concrete project follow a different process for a renovation than a new build?

The core stages are genuinely the same — assessment, design, approvals, pour, cure — but a renovation typically adds extra steps around…

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Pricing & Quotes

Does a cheaper quote always mean lower quality work?

Not automatically — a genuinely efficient, well-run contractor can price competitively without cutting corners, so a lower quote isn't inherently a red…

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Pricing & Quotes

Can a quote be honoured if I don’t proceed until months later?

Most quotes have a stated validity period, and material and labour costs genuinely do shift over months, so a contractor typically can't…

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Pricing & Quotes

Does a quote typically break down labour and materials separately?

A genuinely well-prepared quote usually itemises the major cost components — materials, labour, machinery hire, disposal — even if it's presented as…

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Council Requirements

Can council requirements affect where a concrete truck is allowed to park?

Yes, genuinely — where a truck or pump needs to stand on the road or footpath rather than fully within your property,…

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Council Requirements

Does council need to inspect a completed retaining wall?

Where a permit was genuinely required for the wall, yes — a final inspection or certification step typically confirms the completed wall…

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Council Requirements

Can council requirements be different for a corner block vs a standard block?

Yes, genuinely — a corner block has two street frontages, which typically means two sets of setback rules, sightline requirements at the…

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Council Requirements

Does council require a nature strip bond before works begin?

Many Victorian councils genuinely do require a refundable bond (alongside an asset protection permit and condition report) before works involving trucks or…

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Building Permits

Does a building permit application need neighbour consent?

Not routinely, but it genuinely can be relevant where your works affect a shared boundary, easement, or fall within specific setback and…

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Building Permits

Can a building permit be refused after a soil report is submitted?

A soil report itself doesn't directly cause a refusal — but if it reveals conditions your original design didn't account for, your…

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Building Permits

Does a building permit cover excavation as well as the slab?

Generally, yes — where excavation is genuinely part of the same overall building works (site preparation for a new slab, for instance),…

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Engineering

Can I use the same engineer across multiple stages of a project?

Yes, and it's genuinely worth doing where practical — one engineer carrying design intent across your slab, retaining wall and any later…

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Engineering

Does an engineer need to revisit the site once construction is underway?

Often, yes — many engineering certifications genuinely require specific inspection hold points during construction (like before a slab pour or pier concrete…

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Engineering

Can an engineer’s design be peer-reviewed by council before approval?

Building surveyors genuinely check that certified engineering documentation is present and properly completed as part of the permit process, though this is…

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Soil Reports

Can I request a copy of my soil report if my builder commissioned it?

Yes — even if your builder commissioned and paid for it as part of your build contract, it's genuinely your property's report,…

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Soil Reports

Does a soil report tell you about groundwater levels as well as soil class?

Yes — a proper soil report genuinely records groundwater observations from the boreholes taken, which matters directly for foundation design, drainage planning,…

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Soil Reports

Can a soil report be reused if I only extend my home rather than rebuild?

Often, yes, if a report already exists for your property and is still within its valid window — an extension can genuinely…

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Foundations

Does foundation type affect how a house sounds or feels underfoot?

Slightly, yes — a solid ground-supported slab (raft, waffle, or conventional) genuinely feels different underfoot to a suspended timber floor on piers,…

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Foundations

Can a foundation problem be misdiagnosed as a plumbing issue?

Yes, genuinely — a leaking pipe under a slab and foundation movement can both produce similar early symptoms, like damp patches, cracking,…

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Foundations

Does a foundation need different design for a corner allotment?

The core engineering approach stays the same, but a corner block genuinely brings extra site-specific factors — two street boundaries with their…

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Commercial Concrete

Does commercial concrete pricing differ for multi-storey car parks?

Yes, genuinely — suspended slabs, more complex formwork, higher reinforcement demands and pumping concrete to upper levels all add real cost compared…

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Commercial Concrete

Can commercial concrete be poured with the tenant’s fit-out already underway?

It happens, but it's genuinely coordination-heavy — dust, vibration and access all need managing around fit-out trades and any exposed fixtures or…

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Commercial Concrete

Does commercial concrete work require a traffic management plan?

On sites with concrete trucks, pumps or machinery affecting a road, footpath or car park, yes — a genuine traffic management plan…

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Bored Piers

Can bored piers be tested for load capacity after installation?

Yes — load testing is a genuine option, though it's more commonly used on larger commercial projects or where site conditions were…

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Bored Piers

Does bored pier concrete need a specific slump for pouring into the hole?

Yes — pouring into a narrow, deep hole genuinely needs a more flowable mix (a higher slump) than a standard slab pour,…

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Bored Piers

Can bored piers be installed next to a boundary fence?

Yes, within limits your engineer confirms — drilling rig clearance and the pier's required set-back from the boundary both factor in, and…

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Screw Piles

Can screw piles be combined with a waffle slab on the same site?

Genuinely uncommon as a direct pairing — screw piles typically support suspended structures like decks and additions, while a waffle slab is…

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Screw Piles

Does the weather affect when screw piles can be installed?

Screw piles are genuinely far less weather-sensitive than a concrete pour, since there's no curing process to protect — installation can usually…

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