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Antoni Rajwer
Antoni Rajwer
on Airtightness and Moisture Management
Technical and Training Manager

Antoni is a registered engineer based in pro clima's Auckland office. With his dad being a builder, Antoni literally inherited his passion for wood and construction.

Over the last 20 years he has worked in the construction sector manufacturing and developing new products, predominately related to the building envelope. Having worked with some of the best minds in the industry, Antoni turned his focus to education and technical support in an effort to offer alternatives that would prove to be a more sustainable way to build.

27 June 2022

Above Sheathing Ventilation, Part 2: The Blue Planet

A look at the impact of water from the outside, the inside and within our buildings, and how above sheathing ventilation can keep the structure dry using proven building physics.

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30 May 2022

Above Sheathing Ventilation Part 1: Rise of the Cavity

An introduction to Above Sheathing Ventilation (ASV) and some of the issues it helps to resolve. 

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26 April 2022

Thermoplastic Elastomer Ether Esters: What are They, and How Do They Work?

TEEE membranes actively transport water vapour through molecular diffusion across the thickness of the TEEE film.

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27 September 2021

What is Above Sheathing Ventilation?

A guide to Above Sheathing Ventilation (ASV) and how it can significantly reduce moisture accumulation and assist with condensation management.

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22 February 2021

Constructing School Roofs the Right Way

The Ministry of Education's updated guidelines on Weathertightness Design Requirements for New School Buildings outline new changes in the design philosophy of school roofs set well above NZBC Acceptable Solutions. 

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27 July 2020

Adhesive Tapes Part 2: Surface Tension, Testing and Durability

Knowledge about the fundamentals of adhesion technology and about the loads that will actually be acting in practice is crucial in order to be able to carry out reliable project planning and testing.

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22 June 2020

Adhesive Tapes Part 1: Types of Adhesive and How They Stick

This article provides an overview of adhesive technology and the key properties of adhesive tapes typically used in construction.

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28 April 2020

When Air Leaks Become a Critical Failure Risk: Aquatic Centres

The new aquatic centre was the pride of the council — a shimmering new facility that was meant to keep active people healthy and provide a safe place for kids. But the new council owners noticed odd things about the building as soon as they turned the systems on.

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23 March 2020

Specifying for Airtightness and Testing

We hear about better building performance through air tightness all the time. You’ve probably heard you can test for it with a blower door. But if that’s what you want, how do you get it? Here’s some guidance on how to specify for air tightness and a test to prove it. 

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21 October 2019

‘Airtight’ vs ‘Breathable: What's it all about?

This month we look at 'airtight' vs 'breathable' building. Is it possible to achieve both within the same build? 

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