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 foundation design differ for a home with a swimming pool attached?
Yes, genuinely — a pool close to a home's foundation can affect soil moisture and stability, so your engineer factors proximity and…
Read Answer FoundationsCan a foundation be assessed as part of a pre-purchase building inspection?
Yes — a standard pre-purchase building inspection genuinely covers visible foundation indicators (cracking, level, drainage), though it's not a full structural engineering…
Read Answer FoundationsDoes foundation repair typically require vacating the home?
Often, no — many foundation repair techniques (underpinning, for instance) can genuinely be carried out while you remain living in the home,…
Read Answer FoundationsCan a foundation be designed to reduce future renovation disruption?
Yes, genuinely worth considering if you know future extension plans are likely — designing in extra capacity or leaving service conduits accessible…
Read Answer Commercial ConcreteDoes commercial concrete pricing include line marking as standard?
Genuinely, not usually by default — line marking is typically a separate line item or a different specialist trade entirely, so it's…
Read Answer Commercial ConcreteCan commercial concrete be laid with embedded floor markings?
Genuinely, most durable floor markings (bay lines, safety zones) are applied as a coating or paint after the slab cures, rather than…
Read Answer Commercial ConcreteDoes commercial concrete need anti-static properties in some facilities?
In specific facilities — data centres, some manufacturing or electronics environments — yes, a genuine anti-static (ESD) concrete finish or coating can…
Read Answer Commercial ConcreteCan commercial concrete work be scheduled around public holidays?
Yes, genuinely factored into program planning — public holidays affect supplier availability and crew rostering, so your contractor accounts for them when…
Read Answer Bored PiersDoes a bored pier need a different mix design in wet ground conditions?
Often, yes — where groundwater is genuinely present in the hole, a mix designed to resist washout and maintain strength when placed…
Read Answer Bored PiersCan bored piers be installed near an existing driveway without damaging it?
Yes, with genuine care taken around rig positioning and weight distribution, so the existing driveway isn't cracked or damaged by heavy drilling…
Read Answer Bored PiersDoes a bored pier’s reinforcement cage need to be pre-fabricated offsite?
Often, yes — reinforcement cages are commonly pre-assembled to the engineer's specification, then lowered into the drilled hole as a complete unit,…
Read Answer Bored PiersCan bored piers be poured in cold weather without issue?
Yes, generally without major issue — cold weather slows curing rather than preventing the pour altogether, so bored piers are genuinely poured…
Read Answer Screw PilesDoes screw pile length vary noticeably across one site?
Yes, genuinely common — since each pile is driven to a required bearing (measured by installation torque) rather than a fixed depth,…
Read Answer Screw PilesCan screw piles be used on a site with underground services nearby?
Yes, with the same genuine precaution as any foundation work — a Dial Before You Dig check confirms exactly where services run,…
Read Answer Screw PilesDoes a screw pile foundation need bracing between piles?
Often, yes, particularly for taller structures like elevated decks — bracing between piles genuinely helps resist lateral (sideways) loads, adding stability beyond…
Read Answer Screw PilesCan screw piles be installed under an existing deck without removing it?
Sometimes, yes — where there's genuinely enough clearance for a compact rig to access beneath the deck, screw piles can be installed…
Read Answer Retaining WallsDoes a retaining wall’s colour or texture need council approval in some areas?
In some genuinely heritage-sensitive or design-controlled areas, yes — council can specify acceptable materials, colours or finishes for street-visible retaining walls as…
Read Answer Retaining WallsCan a retaining wall be partially demolished and repaired rather than fully rebuilt?
Sometimes, yes — where damage is genuinely localised (one section leaning or failed, the rest sound), a partial rebuild can be viable,…
Read Answer Retaining WallsDoes a retaining wall need a different design if it also holds back a driveway?
Yes, genuinely — a retaining wall supporting a driveway needs to account for vehicle loading (surcharge load) on top of the normal…
Read Answer Retaining WallsCan a retaining wall be built using gabion baskets instead of concrete?
Yes, genuinely a recognised option — wire cages filled with rock, gabion walls offer good drainage and a distinctive natural look, suited…
Read Answer Soil RemovalDoes soil removal include cleaning the street afterward?
Yes — a genuinely professional contractor cleans up any spilled soil or debris tracked onto the street as standard practice, not just…
Read Answer Soil RemovalCan soil removal be scheduled to avoid bin collection day conflicts?
Yes, genuinely easy to accommodate — letting your contractor know your council's bin collection day means truck movements can be scheduled around…
Read Answer Soil RemovalDoes soil removal need to happen before or after a demolition permit is issued?
Genuinely, after — demolition needs its own permit and must be completed first, since bulk soil removal and excavation follow demolition on…
Read Answer Soil RemovalCan soil removal trucks use a different entry and exit point to reduce street disruption?
Yes, genuinely a common approach where site access allows — routing trucks in and out via different points (or a one-way loop)…
Read Answer Site CutsDoes a site cut affect neighbouring fence lines?
Genuinely, yes, if the cut is close to the boundary — removing support near an existing fence line can affect the fence's…
Read Answer Site CutsCan a site cut be done progressively as the build proceeds, rather than all upfront?
Genuinely uncommon — most site cuts are completed upfront as part of site preparation, since the finished, stable cut is what the…
Read Answer Site CutsDoes a site cut need separate approval if it’s under a certain volume?
It depends genuinely on your specific council and overall project — some smaller cuts are covered under a broader building permit without…
Read Answer Site CutsCan a site cut be engineered to create a usable retaining terrace rather than just a wall?
Yes, genuinely a popular approach on sloping sites — rather than one tall retaining wall, a site can be cut in steps…
Read Answer ExcavationDoes excavation pricing change if access requires a smaller machine?
Yes, genuinely — a smaller machine required by restricted access typically works slower and may need more passes, which can increase the…
Read Answer ExcavationCan excavation spoil be tested for reuse as garden topsoil?
Deeper excavated material is often genuinely subsoil rather than true topsoil, so while it can sometimes be tested and reused for garden…
Read Answer ExcavationDoes excavation need fencing or hoarding around the site?
Often, yes — temporary fencing is genuinely standard on most excavation sites for safety and site security, with hoarding sometimes additionally required…
Read Answer ExcavationCan excavation be paused overnight safely with an open trench?
Yes, with genuine safety measures — proper fencing, covers or barricades, and warning signage are required overnight to prevent falls or unauthorised…
Read Answer Plain & Coloured ConcreteDoes plain concrete’s finish affect how much it echoes sound outdoors?
Only marginally — a hard, smooth trowelled finish reflects sound slightly more than a textured broom or exposed aggregate surface, though this…
Read Answer Plain & Coloured ConcreteCan I choose a coloured concrete finish that mimics natural stone?
Yes, genuinely convincingly — combining specific colour tones with a stamped or textured finish can achieve a look genuinely close to natural…
Read Answer Plain & Coloured ConcreteDoes coloured concrete need a protective topcoat beyond standard sealer?
Standard sealer is genuinely sufficient for most coloured concrete, though a higher-grade UV-stable sealer is sometimes recommended for particularly vivid colours in…
Read Answer Plain & Coloured ConcreteCan plain concrete be given a salt-and-pepper aggregate look without full exposure?
Yes — a lighter surface treatment can genuinely reveal a subtle "salt-and-pepper" aggregate texture without the deeper, more pronounced exposure of a…
Read Answer Exposed AggregateDoes exposed aggregate reflect more heat back onto a nearby house wall?
Genuinely less than plain smooth concrete or dark paving — exposed aggregate's textured surface and typically lighter stone colours reflect and radiate…
Read Answer Exposed AggregateCan exposed aggregate be repaired to blend seamlessly after a utility trench cut?
A genuinely close match is achievable using the same or a similar aggregate mix, though an exact, invisible blend is difficult, since…
Read Answer Exposed AggregateDoes exposed aggregate need a different curing time to plain concrete?
The underlying concrete cures at broadly the same rate, but exposed aggregate has an additional early-stage step — washing back the surface…
Read Answer Exposed AggregateCan exposed aggregate be combined with a stencil border design?
Yes, genuinely achievable — a stencilled pattern border can frame an exposed aggregate field, giving a genuinely distinctive combined look, though it…
Read Answer Concrete DrivewaysDoes a driveway’s edge need protection where it meets garden beds?
Genuinely worth considering — a defined edge (a formed lip, a border strip, or steel edging) helps stop garden soil and mulch…
Read Answer Concrete DrivewaysCan a driveway be poured to include a designated bin storage pad?
Yes, genuinely a popular practical addition — a small dedicated concrete pad beside or within the driveway layout gives bins a genuine,…
Read Answer Concrete DrivewaysDoes a driveway need a different base preparation on reactive clay?
Yes, genuinely — reactive clay can move seasonally with moisture changes, so a driveway on this soil type often needs a more…
Read Answer Concrete DrivewaysCan a driveway be built with integrated LED lighting?
Yes — recessed LED fittings or in-ground uplights can genuinely be embedded into a driveway pour, with conduit and fittings positioned before…
Read Answer Waffle SlabsDoes a waffle slab need a different vapour barrier detail around plumbing penetrations?
Yes — anywhere a pipe penetrates the vapour barrier genuinely needs careful sealing detail to maintain the barrier's effectiveness, rather than leaving…
Read Answer Waffle SlabsCan waffle slab pods be inspected for damage before the pour?
Yes, and it's genuinely standard practice — pods are checked for cracks or damage before the pour, since a compromised pod can…
Read Answer Waffle SlabsDoes a waffle slab’s void need ventilation?
Genuinely, no — unlike a suspended timber floor with an open subfloor cavity, a waffle slab's void is fully enclosed within the…
Read Answer Waffle SlabsCan a waffle slab be built with in-slab heating pipes?
Yes, genuinely achievable — heating pipes are positioned within the top layer of concrete above the pods, coordinated with your reinforcement and…
Read Answer Raft SlabsDoes a raft slab need different formwork on an irregular-shaped block?
Yes, genuinely more complex — an irregular footprint needs formwork custom-built to match your actual building outline, rather than the simpler rectangular…
Read Answer Raft SlabsCan a raft slab be specified with post-tensioned reinforcement?
Yes, genuinely an option on larger or more demanding raft slab designs — post-tensioning can allow a thinner slab profile while still…
Read Answer Raft SlabsDoes a raft slab need a vapour barrier the same way a waffle slab does?
Yes — a vapour barrier is a genuinely standard requirement under a raft slab too, managing ground moisture the same way it…
Read Answer Raft SlabsCan a raft slab be poured in sections if the concrete truck can’t reach the whole site at once?
Yes, with proper engineering — where access genuinely limits a single continuous pour, your engineer designs construction joints so the raft still…
Read Answer House SlabsDoes a house slab need different treatment on a bushfire-prone site?
Yes — a property's Bushfire Attack Level (BAL) rating genuinely influences construction requirements, and while the slab itself is non-combustible, edge detailing…
Read Answer House SlabsCan a house slab be built to accommodate future solar panel conduit runs?
Yes, genuinely worth doing if you know solar's in your future plans — empty conduit can be laid within the slab now,…
Read Answer House SlabsDoes a house slab need extra thickness under a heavy feature like a fireplace?
Often, yes — a genuinely heavy fixed feature like a masonry fireplace or stone feature wall applies a concentrated point load, so…
Read Answer House SlabsCan a house slab be built with a heated in-slab system?
Yes — hydronic heating pipes or electric heating cable can genuinely be embedded within a house slab, positioned and pressure-tested before the…
Read Answer Builder GuidesDoes a builder typically handle council liaison, or does the subcontractor?
Typically the builder, as the genuine primary point of contact for permits and council communication on the overall project, though a concrete…
Read Answer Builder GuidesCan a builder request progress claims tied to concrete milestones?
Yes, genuinely standard — payment structured around clear, verifiable milestones (excavation complete, slab poured, cured and inspected) is common practice, giving both…
Read Answer Builder GuidesDoes a builder need to manage disputes between trades directly?
Yes, genuinely part of a builder's coordination role — when trades' work overlaps or conflicts, the builder typically steps in to resolve…
Read Answer Builder GuidesCan a builder request concrete samples before agreeing to a subcontractor?
Yes, genuinely reasonable, particularly where a specific decorative finish or colour is involved — seeing real samples or previous work gives a…
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