BAU 2019: At Stand 200 in Hall B6, the focus is on healthier buildings

pro clima presents projects, products and a guiding principle

How does the selection of construction materials and the professional handling of these materials influence the construction of healthy buildings to live in? This is just one of the questions that MOLL pro clima is considering at BAU 2019. The overall issue of healthier buildings is the focus of the trade fair presence of pro clima, the specialist in windtightness and airtightness. At the heart of Stand 200 in Hall B6, we will be presenting our joint projects with the Sentinel Haus Institut – such as the current research project “My Future Office”, which deals with sustainable, healthier office buildings. However, a significant amount of space is also dedicated to both new and tried-and-tested products that pro clima has developed with the issue of healthy living environments very much in the foreground.

Finding out more, discussing technical issues, experiencing new products at BAU 2019: At the pro clima Stand 200 in Hall B6, everything will be focused on windtight and airtight building envelopes and their importance for achieving healthier buildings.

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Why do I need airtightness sealing at all?

Airtightness sealing has a wide range of significant impacts on buildings. After all, air can flow through the building envelope in an undesired manner if the airtightness sealing is poor. Substances or energy can be transported in this way – this is referred to as convection.

This means that heat leaves the building in an undesired manner during the winter or enters in summertime.

Fuge in der Luftdichtung

A joint with a width of 1 mm and a length of 1 m in a building structure looks small, but has a major impact. The heat losses increase by a factor of 4.8. In addition, up to 0.8 litres of humidity can enter the building structure in a single day.

Scientific studies have shown that the thermal insulation performance can be reduced to just 20 per cent in the case of strong air flow (i.e. through leaks).

Alongside these heat flows, water that is present in the interior in the form of air humidity can enter into building components through leaks in the airtightness. In winter, the temperature in these building components falls. Condensation liquid can then form, which can lead to subsequent damage such as mould.

Unwelcome odours or harmful substances can also spread – and who wants to be able to smell what the neighbours are cooking?

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Reliable planning and implementation of window joints

Joints to other building components are always challenging: they are just a few millimetres in width, but have to offer the same performance as an exterior wall with a thickness of 40 centimetres. Alongside the external influences that act on a building component, there are also laws and standards that stipulate requirements that joints have to fulfil. The wishes of clients or investors are additional considerations that have to be taken into account. The quality and performance of window joints are dependent on good planning, installation according to the three-layer principle, and the choice of materials used.

Careful installation is important in order to ensure the performance of the building envelope and to avoid structural damage and mould. The design principle of three functional layers must be taken into account during planning and installation

The design principle – The joint is what counts!

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A new type of airtightness seal: spray-on or brush-on liquid film from pro clima

This innovative product impresses with its wide range of possible applications

Spraying instead of sticking: AEROSANA VISCON can be used to create a new type of vapour retarder and airtightness seal.

Who says that airtightness films always have to come as sheeting in roll form? With AEROSANA VISCON, there is now a liquid vapour retarder and airtightness layer than can be sprayed directly onto surfaces to be sealed. When it dries out, the acrylic dispersion turns into a durable, seamless elastic protective layer. Suitable subsurfaces include non-plastered masonry, porous panel-form materials and membranes too. With its humidity-variable sd value, AEROSANA VISCON is suitable for interior air sealing and also for protected outdoor areas. The spray film is water-based and has achieved excellent values in the hazardous substance test. Continue reading

Why do adhesives stick?

Adhesive tapes: how do they work, what should they be able to do, and what can they do?

Carpenter uses adhesive tape to seal a building

Considerable lengths of various adhesive tapes are used when sealing buildings.
A carpenter can be seen here sticking the interior corners of a window when working on the interior of a fire station.

Adhesive tapes are used as bonding aids in a wide range of applications in the creation of airtight building envelopes. Several hundred metres of tape are often used on a single building! Adhesive tapes have become established as bonding agents for these applications (just as nails are the standard solution for timber structures). They have to fulfil their functions for a number of decades to ensure that the building in question fulfils the standards expected by the energy consultant and by the building client. This article provides an overview of adhesive technology and the key properties of adhesive tapes typically used in construction. Continue reading

Tom O´Leary interview: Covering the basics of complex issues of Passive Houses

Watch Tom O´Leary and Heide Gentner catching up at the North American Passive House Network Conference in New York after meeting in Darmstadt Germany, at the International Passive House Conference in 2016. Tom O´Leary, Founder of the Passive House Academy, was a speaker at the conference and hosted a workshop on multi-family buildings. The sold-out, intense session on how to achieve multi-family Passive Houses focused mainly on the tricky issues such as basements, ventilation systems, elevators, and trash shoots.

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Juan Levy on the advantages of being a Passive House Designer

Juan Levy, Passive House Designer and Founder and President of FutureFitBuilding LLC based in Philadelphia, PA, spoke with Heide Gentner of pro clima TV at the North American Passive House Network Conference. Please watch the above video to find out why Juan Levy became a certified Passive House Designer and whether designing a Passive House is difficult or not.

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Ken Levenson on Passive House Standard – pro clima TV interview

Ken Levenson is a registered architect in New York State and the President of NY Passive House, a nonprofit dedicated to promote the Passive House Standard as well as a founding member of the North American Passive House Network. In recent months, New York City passed a law mandating that city owned buildings, which are being contructed have Passive House Standard as an optional goal to fulfill energy efficiency requirement. This optional goal which will move to a mandatory fullfilment in the future. In his interview with pro clima´s Heide Gentner, Levenson said “Passive House is a critical tool to establish a carbon free society and answer the climate crisis that we are facing”.

Learn more about Ken Levenson and the Passive House movement:  

 

 

John Druelinger – pro clima TV interview at the NAPHN 2016

John Druelinger of 475 High Performance Building Supply spoke with pro clima´s Heide Gentner at the North American Passive House Conference 2016 in New York City about retrofits and renovations in the North East United States. Airtight sealing is an important topic for Druelinger who is an avid blogger. He uses twitter and facebook to spread the word about airsealing and supports the movement to increase energy use, comfort, and health for the buildings´ occupants.

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Floris Keverling Buisman: A renovation project in Upstate New York

Floris Keverling Buismann of 475, pro clima´s U.S. partner, was invited to speak at the 20th International Passive House Conference in Darmstadt, Germany. He was interviewed by Heide Gentner of pro clima TV about a current renovation project in Upstate New York and shared his impressions of the Passive House Conference.

To learn more about Floris Keverling Buisman or 475, please click here:
www.foursevenfive.com

For more information on the 21st International Passive House Conference in Vienna, Austria in 2017:
https://passivhaustagung.de/en/