Product substitution: what builders must check before swapping a specified product
Lead times and prices push builders to swap specified products every week. Most swaps are fine. The ones that are not become defects, failed inspections and disputes. Here is what to check before you substitute.
7 min read
Blog
Building Materials
What the materials in a house are doing: new products, how established ones perform, supply and prices, and the details that decide whether they last.
Product substitution: what builders must check before swapping a specified product
Lead times and prices push builders to swap specified products every week. Most swaps are fine. The ones that are not become defects, failed inspections and disputes. Here is what to check before you substitute.
7 min read
Insulation installation gaps, compression and poor fits: what actually goes wrong on site
An insulation product only performs as well as its installed condition. Gaps, compression and poor fits are the three faults that undo good product selection, and they are almost always visible before the linings go on.
12 min read
Cool roofs and heat-resilient homes: colour, insulation, ventilation and shade
Heatwaves are Australia’s deadliest natural hazard, and homes that trap heat put occupants at risk and push up cooling bills. The roof is where most summer heat gets in. Here is how to build homes that stay cooler.
7 min read
Insulation for houses: batts, boards and foils, and the gaps that ruin them
Insulation is only as good as its installation. A small percentage of gaps can cut a wall’s performance far more than builders expect. The main insulation types, how they work, and the site details that decide whether the energy rating is real.
7 min read
Reveal tolerances for windows and doors: what to accept on site
Tolerance checking starts before the units come off the truck. Get the inspection and the paperwork right and a defect becomes a supplier claim; get it wrong and you are paying to fix someone else’s extrusion.
15 min read
Flood-resilient homes: floor levels, materials and services that recover after water
Flooding is the most costly natural hazard for Australian homes. Planning rules set minimum floor levels, but materials, services and detailing decide how quickly a home recovers when water gets in anyway.
8 min read
Wet frames and shrinking timber: the moisture defects behind cracks, nail pops and sticking doors
Timber moves as it gains and loses moisture, mostly across the grain. Enclose a wet frame and the shrinkage shows up in the linings months later. How to manage moisture from delivery to handover.
7 min read
House cladding compared: brick, fibre cement, timber, metal and render, and how each one fails
Cladding is the most visible choice on a house and one of the most common sources of leaks and condensation. How the main options compare, where they suit, and the installation details that decide whether they last.
7 min read
Window and door flashing: getting the sequence right at the opening
Glazing performance gets the attention, but the opening is where most water gets in. The order you flash a window or door — sill first, then jambs, then head — is what decides whether the detail drains or traps.
11 min read
Wet area waterproofing membranes: liquid, sheet and where each one fails
Leaking showers are one of the most common and expensive defects in Australian homes. Most failures are not the membrane’s fault but the junctions, penetrations, curing and compatibility around it.
7 min read
Airtightness and blower door testing: the quality check more houses are getting
A well-insulated house that leaks air loses much of the benefit. Blower door tests measure how leaky a house is and find where. Here is how testing works and the details that make the difference.
8 min read
Termite management for new homes: physical, chemical and slab systems, and how they fail
Termites cause some of the most expensive damage in Australian homes, and most attacks exploit gaps in the barrier or the inspection zone. How the systems work, what the NCC expects, and how builders and owners keep them effective.
8 min read