Roof waterproofing solutions

At Allco, we offer a comprehensive range of waterproofing membrane solutions tailored to meet the demands of every roofing scenario. From conventional and low-slope roofs to advanced systems like warm, green, blue, and protected membrane roofs, our products are designed to deliver exceptional performance, durability, and compliance with NZBC standards. Whether you’re working on a timber deck, concrete structure, or an innovative eco-roofing project, we have the expertise and solutions to ensure your roof is built to last.

Explore our range of roof systems below to find the perfect waterproofing solution for your project.

A conventional roof assembly involves placing the roof membrane directly on top of a structural plywood or concrete roof substrate, which is constructed with a slope to meet NZBC requirements.

- Casali 2-Layer Torch-On System

- JM TPO Single-Layer System

- Hydrotech MM6125 Hot Rubber System 

Low-slope roofs are used when achieving the required fall/slope per NZBC standards is not feasible. Solutions for Low-Slope Roofs:

- Casali 2-Layer Torch-On System

- JM TPO Single-Layer System

- Hydrotech MM6125 Hot Rubber System 

Also known as an inverted roof membrane assembly, a PMR places insulation on top of the waterproofing membrane.

Allco Hydrotech MM6125 provides seamless waterproofing, ideal for high-performance, zero-fall, green roofs, and hard landscaped podiums. It is Codemark-certified for dead-level (zero-degree) substrates.

Allco Alltherm Warm Roof System is engineered for energy efficiency, ensuring warm and dry buildings for years to come.

Green Roofs

A green roof, also known as a living roof, consists of vegetation and growing medium planted over a waterproof membrane. Selecting the right waterproofing membrane is essential. Allco offers solutions ideal for green roofs, including:

- JM TPO Membranes

- Hydrotech MM6125

 

Product Manufacturer Description
Bitumen Membranes Casali

A versatile range of bitumen membranes for roofs and decks, available in APP, SBS and APAO formulations. From flat roofs to trafficable decks, choose from torch-on or flame-free systems.


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TPO Membrane Johns Manville

A reinforced single-ply membrane offering superior UV resistance, weldability and long-term durability. Known for its flexibility and strength, it is ideal for low-slope roofs, decks, green roofs and water-collection systems.


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Hot melt monolithic membrane Hydrotech

A self-healing, hot-applied, monolithic membrane ideal for zero-fall, green roofs, and podiums. This thick, flexible and solvent-free membrane system protects against water tracking.


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Warm Roof system Allco

Made for New Zealand’s climate, this slim, fully adhered warm roof system eliminates thermal bridging and is ideal for low-slope designs with a minimal build-up height. Supports TPO or torch-on membranes.


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Recover Roof system Allco

A re-roofing system using your existing metal roof as the base. Reuses the existing deck to improve watertightness, insulation and compliance. Suitable for occupied buildings needing a cost-effective, low-disruption retrofit.


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Green Roof Allco

A green roof consists of a roof partially or completely covered with vegetation and a growing medium, planted over a waterproofing membrane.


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Document Type Brand Actions
Casali Olympia Technical Data Sheet
pdf0.11 MB
Technical Datasheet (TDS) Casali Preview Download
JM Vapour Barrier Product Sheet
pdf0.19 MB
Technical Datasheet (TDS) Johns Manville Preview Download
JM TPO - Product Datasheet
pdf0.24 MB
Technical Datasheet (TDS) Johns Manville Preview Download
Certificate of Analysis Potable Water
pdf1.01 MB
Technical Datasheet (TDS) Johns Manville Preview Download
Allprep - Technical Data Sheet
pdf0.13 MB
Technical Datasheet (TDS) Johns Manville Preview Download
Allco Alltherm TPO - Compliance Documents
pdf37.46 MB
Product manual Johns Manville Preview Download
Casali Idroprimer - Technical Data Sheet
pdf0.06 MB
Technical Datasheet (TDS) Casali Preview Download
Casali Gruver - Technical Data Sheet
pdf0.30 MB
Technical Datasheet (TDS) Casali Preview Download
Casali Eradix - Technical Data Sheet
pdf0.39 MB
Technical Datasheet (TDS) Casali Preview Download
Casali Dermaprimer - Technical Data Sheet
pdf0.06 MB
Technical Datasheet (TDS) Casali Preview Download
Casali Dermafil - Technical Data Sheet
pdf0.44 MB
Technical Datasheet (TDS) Casali Preview Download
Casali Dermabit Extra - Technical Data Sheet
pdf0.86 MB
Technical Datasheet (TDS) Casali Preview Download
Casali Aderix - Technical Data Sheet
pdf0.09 MB
Technical Datasheet (TDS) Casali Preview Download
Allco Alltherm Casali - Compliance Documents
pdf37.46 MB
Product manual Casali Preview Download

Above-ground applications

From a simple deck to a suspended carpark structure, we provide robust waterproofing solutions for every above-ground application.

Projects

Explore how our waterproofing systems perform across projects around the country.

Approved Applicators

Search our nationwide network of accredited applicators, trained to Allco warranty standards.