Roofing & insulation supplies — Melbourne
Trade Insights
Spec guides, compliance notes and on-site trade advice from PREZO's Melbourne team — helping builders, roofers and estimators get commercial roofing packages right the first time.
Spec guides
Practical selection advice for sarking, insulation, rainwater and fasteners — written for estimators and site supervisors.
Compliance
BAL ratings, NCC Section J and AS/NZS context for Victorian commercial builds — what certifiers expect on file.
Commercial programs
Pack lots, staged delivery and supply coordination for multi-building roofing programs across Melbourne and Victoria.
Browse by topic
Showing 10 articles in Spec Guides
Featured · Spec Guides
Melbourne's temperature swings make metal roof condensation a near-guaranteed issue without the right combination of foil facing and roof ventilation.
Spec GuidesNot every internal wall needs the same acoustic batt. Matching batt density to the actual Rw requirement avoids both underperformance and unnecessary cost.
Read more
Spec GuidesZero-running-cost wind-driven vents work well until heat load or still-air days expose their limits. Here's when to add or switch to powered ventilation on commercial roofs.
Read more
Spec GuidesThermal-only duct wrap and acoustic-rated lagging solve different problems on plant rooms and mechanical risers — mixing them up costs more than the wrap itself.
Read more
Spec GuidesSuspended floors over unconditioned space lose comfort and energy performance fast without the right underfloor system. Here's how batts, foilboard and reflective systems compare.
Read more
Spec GuidesThey look similar on a pallet and get confused on smaller sites — but wall wrap and roof sarking are engineered for different loads, orientations and vapour behaviour.
Read more
Spec GuidesA compressed roofing blanket under the sheet loses R-value long before you notice on site. Spacer systems recover full loft — here's when they earn their place in the spec.
Read more
Spec GuidesMetal and tiled roofs behave differently under Victorian weather. This guide explains which sarking type suits each build, how condensation risk changes, and what to specify on commercial programs.
Read more
Spec GuidesUndersized gutters cause overflow on Melbourne's intense rainfall days. Learn how to size commercial gutters, sumps and downpipes — and coordinate them with your roof package.
Read more
Spec GuidesNCC compliance and condensation risk depend on putting insulation in the right layer. A practical guide for Victorian commercial builds with metal decks, suspended ceilings and open roof spaces.
Read moreGet a Quote
Our trade team specs commercial pack lots every week — send plans or a bill of quantities and we will come back with aligned quantities and delivery options.