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Thomas van Raamsdonk
Thomas van Raamsdonk
on Airtightness and Moisture Management
General Manager

Thomas is the General Manager of Pro Clima NZ. He has extensive knowledge on airtightness, thermal bridging and healthy homes, and is dedicated to improving the building standards in Oceania to create a long-term solution that ensures healthy living for everyone.

22 February 2021

Constructing School Roofs the Right Way

MENTO 3000 ASV image

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

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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

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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

swimming pool

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

blow door 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?

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

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21 March 2019

Designing for Steam in Modern Buildings


We pipe water inside buildings, so what happens when we turn it into steam?

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21 February 2019

Fire Testing for Temporary Wall Cladding

Fire image resistance

A look at how a peel and stick weathertightness membrane performs in a fire when used as a temporary cladding.

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18 October 2018

Renovating and Insulating Masonry Walls

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Why strapping and lining masonry walls on the inside is not a good idea, not for renovation, not for new builds. 

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21 September 2018

Adding Insulation and Wall Underlay to Existing Walls

pro clima a

How can we safely add insulation to existing walls without risking trapped moisture and compromising durability? 

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