Help Centre
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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
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…
Read Answer Plain & Coloured ConcreteCan 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…
Read Answer Plain & Coloured ConcreteDoes 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…
Read Answer Plain & Coloured ConcreteCan 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…
Read Answer Exposed AggregateDoes 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…
Read Answer Exposed AggregateCan 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…
Read Answer Exposed AggregateDoes 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…
Read Answer Exposed AggregateCan 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…
Read Answer Concrete DrivewaysDoes 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…
Read Answer Concrete DrivewaysCan 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…
Read Answer Concrete DrivewaysDoes 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…
Read Answer Concrete DrivewaysCan 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…
Read Answer Waffle SlabsDoes 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…
Read Answer Waffle SlabsCan 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…
Read Answer Waffle SlabsDoes 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…
Read Answer Waffle SlabsCan 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…
Read Answer Raft SlabsDoes 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,…
Read Answer Raft SlabsCan 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…
Read Answer Raft SlabsDoes 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,…
Read Answer Raft SlabsCan 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…
Read Answer House SlabsCan 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…
Read Answer House SlabsDoes 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…
Read Answer House SlabsCan 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,…
Read Answer House SlabsDoes 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…
Read Answer Builder GuidesCan 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,…
Read Answer Builder GuidesDoes 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…
Read Answer Builder GuidesCan 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…
Read Answer Homeowner GuidesWhat’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…
Read Answer Homeowner GuidesIs 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…
Read Answer Homeowner GuidesShould 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…
Read Answer Construction ProcessWhat 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…
Read Answer Construction ProcessCan 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…
Read Answer Construction ProcessDoes 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…
Read Answer Pricing & QuotesDoes 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…
Read Answer Pricing & QuotesCan 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…
Read Answer Pricing & QuotesDoes 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…
Read Answer Council RequirementsCan 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,…
Read Answer Council RequirementsDoes 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…
Read Answer Council RequirementsCan 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…
Read Answer Council RequirementsDoes 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…
Read Answer Building PermitsDoes 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…
Read Answer Building PermitsCan 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…
Read Answer Building PermitsDoes 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),…
Read Answer EngineeringCan 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…
Read Answer EngineeringDoes 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…
Read Answer EngineeringCan 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…
Read Answer Soil ReportsCan 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,…
Read Answer Soil ReportsDoes 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,…
Read Answer Soil ReportsCan 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…
Read Answer FoundationsDoes 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,…
Read Answer FoundationsCan 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,…
Read Answer FoundationsDoes 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…
Read Answer Commercial ConcreteDoes 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…
Read Answer Commercial ConcreteCan 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…
Read Answer Commercial ConcreteDoes 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…
Read Answer Bored PiersCan 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…
Read Answer Bored PiersDoes 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,…
Read Answer Bored PiersCan 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…
Read Answer Screw PilesCan 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…
Read Answer Screw PilesDoes 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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