• 34 Grayson Avenue, Papatoetoe, Auckland 2104
icon
Call Us (09) 279 9611
Exposed concrete slab perimeter of an Auckland house during a retrofit, with insulation boards being fitted along the slab edge before backfill
Koolfoam Sep 14, 2026

What to Expect From Slab Edge Insulation in Auckland Retrofits

Retrofitting slab edge insulation in an Auckland home takes more than adding boards around the perimeter. This guide explains how assessment, ground levels, drainage checks, material selection and trade coordination all shape the finished detail, why spring weather affects programming, and what the project team should confirm on site before backfill, paving or landscaping is reinstated.

Continue Reading
Foam board insulation panels stacked on an Auckland home renovation site with an exposed timber subfloor
Koolfoam Sep 11, 2026

Where Foam Board Insulation Fits in Auckland Home Renovations

Renovating an Auckland home is the ideal moment to build in warmth. This guide explains where foam board insulation fits across underfloor, under-slab and slab-edge areas, how EPS Geofoam supports lightweight ground work, and why matching the board to the full construction build-up matters. Plan insulation early to keep your spring renovation programme running smoothly.

Continue Reading
Insulation boards laid over a prepared substrate before a cold store concrete floor slab is poured
Koolfoam Aug 31, 2026

High Compressive Strength XPS Sheets Vs EPS in Cold Stores

Cold store floors face forklift traffic, point loads, ground moisture and demanding temperature targets. This guide compares high-compressive-strength XPS sheets with EPS insulation, covering load matching, vapour control, installation quality and whole-of-life value. Learn how to specify the right polystyrene solution for freezer rooms, chilled zones, loading spaces and plant areas across a New Zealand cold storage facility.

Continue Reading
Subfloor cavity of an Auckland home with rigid polystyrene insulation fitted between timber floor joists
Koolfoam Aug 25, 2026

Why Auckland Homes Lose Heat Through Uninsulated Floors

Cold floorboards and rooms that never quite hold their warmth often point to an uninsulated subfloor. We look at how heat escapes through suspended timber floors, the signs worth watching for in Auckland homes, and what to weigh up when comparing underfloor insulation supply, from floor type and joist spacing to clearance, moisture management and thermal performance.

Continue Reading
White EPS void former blocks set out between reinforcing steel on a prepared foundation ahead of a concrete slab pour
Koolfoam Aug 18, 2026

Understanding Custom Expanded Polystyrene Blocks for Void Formers

Custom expanded polystyrene blocks give project teams a precise way to form engineered voids beneath concrete slabs and foundations. This guide explains how tailored EPS sizes, profiles and cut-outs suit detailed beam layouts, stepped levels and service penetrations, how void formers can reduce unnecessary concrete and dead load, and what to confirm with your engineer before materials arrive on site.

Continue Reading
Stacked lightweight EPS Geofoam blocks being placed as structural fill on a civil construction site
Koolfoam Aug 11, 2026

EPS Geofoam Structural Fill for Efficient Civil Projects

Koolfoam explains how lightweight EPS Geofoam offers civil and commercial teams a practical structural fill option that reduces dead load, simplifies handling and supports stable levels on constrained sites. Learn how block based fill can support roads, ramps, retaining structures and building platforms while helping crews manage soft ground, tight access and busy construction schedules across New Zealand projects.

Continue Reading
Slab edge moisture management with drainage and vapour barriers for Auckland homes
Koolfoam Aug 4, 2026

Slab Edge Moisture Management in Auckland: Drainage and Vapour Barriers

Discover how Auckland homes can reduce slab edge dampness with better drainage, vapour barriers, and moisture-resistant slab edge insulation. This article explains common moisture risks, thermal bridging, and practical detailing strategies that help create warmer, drier, and more durable concrete slab foundations.

Continue Reading
Geofoam blocks compared with traditional soil fill for New Zealand construction projects
Koolfoam Jul 28, 2026

Geofoam vs. Traditional Soil: Cost, Settlement and Installation for NZ Projects

Compare geofoam and traditional soil for New Zealand construction projects, including costs, settlement risk, installation speed and site safety. Learn where lightweight structural fill geofoam can reduce ground loads, improve buildability on soft sites, and help civil, commercial and residential projects stay on programme in challenging NZ conditions.

Continue Reading
Geofoam structural fill installation for a commercial project in Auckland
Koolfoam Jul 20, 2026

Choosing Geofoam Contractors in Auckland for Commercial Structural Fill

Learn how to choose the right geofoam contractor in Auckland for commercial and civil projects. This guide covers key specifications, compliance, pricing, drainage, staging, and local supply considerations to help developers and contractors deliver lightweight structural fill solutions with better performance, faster installation, and reduced settlement risk.

Continue Reading
Eco-friendly polystyrene insulation for Auckland builds
Koolfoam Jul 13, 2026

Is Eco-Friendly Polystyrene in Auckland Really Sustainable?

Discover how eco-friendly polystyrene in Auckland can support warmer, lower-waste buildings through efficient insulation, custom cutting, in-house recycling, and long-term thermal performance. This article explains sustainability myths, end-of-life options, and why local supply and smart specification matter for residential and commercial construction projects.

Continue Reading
Slab edge insulation detail for an Auckland residential build
Koolfoam Jul 7, 2026

Common Slab Edge Insulation Mistakes Auckland Builders Make

Auckland builders can avoid costly slab edge insulation mistakes with practical guidance on climate, product choice, detailing, moisture control and compliance. Learn how the right slab edge insulation improves energy efficiency, reduces condensation risk and supports warmer, drier homes on every new build.

Continue Reading
Lightweight structural fill benefits for Auckland builds
Koolfoam Jul 1, 2026

Why Geofoam Contractors in Auckland Prefer Lightweight Structural Fill

Lightweight structural fill is transforming Auckland construction projects by reducing ground loads, improving settlement control, and speeding up installation on challenging sites. This article explains why geofoam contractors in Auckland choose EPS geofoam for roads, embankments, podiums, retaining walls, and complex foundations, while also highlighting sustainability benefits, wet-weather performance, and local technical support.

Continue Reading
under slab insulation in nz homes
Koolfoam Jun 29, 2026

Understanding Concrete Under Slab Insulation in NZ Homes

Concrete under-slab insulation helps New Zealand homes stay warmer, drier, and more energy efficient by reducing heat loss through the floor. Learn how EPS and XPS insulation improve comfort, support Building Code performance, and create long-lasting slab systems for better-performing homes.

Continue Reading
Contact

Transform Your Project Today

At Koolfoam, we have the quality solutions and expertise you can rely on to get the job done right.

Get Started Today
roof