Intro to airtight construction methods with the Pro Clima system

Nick Shaw of 475 High Performance Building Supply gives an introduction to the science, design, and methods behind durable, long-lasting, ecological construction that is optimized for efficiency and comfort.
Pro Clima is the world leader in complete, ecological, airtightness and vapor control systems: membranes, tapes, gaskets and adhesives - all supported by intensive building science research. Pro Clima was founded in 1978, by Lothar Moll, a pioneer in biological and ecological building methods, with a degree in Engineering Wood Technology Study and Industrial Engineering. Pro Clima developed the first variable-permeability vapor retarder.

[@chuhusuu1]

appreciate all the detail that you have covered here!

[@glennhughes6432]

FANTASTIC VIDEO, Thank you

[@NQR4real]

What a great video on Passive house construction. I'm doing the PHPP designer course in Australia and this video has been enlightening. Also the the airtight sealing liquids I have not seen before. Just fantastic, I loved it

[@friendlylocal3731]

More content like this please! Very informative. I really liked seeing all the methods for different scenarios.

[@475.SUPPLY]

Thanks! Noted! We can definitely make more like this.

[@dwightforeman1258]

Excellent presentation!
Great informative content on building tight , and tied in with 475 products to do it.
Thanks Nick

[@sscaustic]

good job on your presentation, well done!

[@peterwalton1502]

What a good vlog 👏👏👏🇬🇧🇬🇧

[@kermitefrog64]

By the way I failed to mention that on my Dad's house that was built in the late 1950' and my Dad and Mom bought the house in 1960 had a form of the Gutex insulation on the 2x4 walls with no other insulation. Out of curiosity when looking up the fibrous wood insulation I came up with your website.

[@475.SUPPLY]

The Gutex company has been making wood fiber insulation for over 80 years, and there have been others like it in the past. Natural insulation was the only insulation prior to the chemical era.

[@bottegaarchitecture7826]

Nice presentation Nick! Hope you are well! @475 are you offering these videos as learning credits?

[@nickk05281982]

You face tape the bottoms of your window assembly? What happens if the window joints get small amounts of moisture seepage?

[@475.SUPPLY]

That's right. Because the materials we're using have such a high water resistance, it's unlikely, but in the case of install error, having materials with such a high vapor permanence ensures that anything that gets in will dry out.

[@auwtomoton]

🤘

[@marioss9321]

so what do you guys reccomend for SIPs builds down south?

[@475.SUPPLY]

Tape the OSB of the SIP on interior with TESCON VANA. Exterior, either ADHERO or MENTO with TESCON VANA

[@marioss9321]

@@475.SUPPLY thanks, what about spraying visconn all round the exterior instead of adhero?

[@475.SUPPLY]

@@marioss9321 Using VISCONN for the WRB is an option! We recommend you connect with our product consultants for project-specific support. Find us at www.475.supply

[@CMCraftsman]

Right from the beginning I’m going to have to disagree with building an airtight addition on an existing home unless you’re able to talk the homeowner into installing an ERV. I’ve already seen the problems this causes in the form of condensation on windows and mold growth because someone has built an airtight master bedroom/bathroom addition and no ventilation besides a bath fan.

[@paulgaras2606]

I think you’ve identified a problem without an accurate assessment of the root cause. Mold growth and condensation wont usually be resolved with an ERV (unless perhaps you’re in Arizona). High dew points require a dehumidifier, not more ventilation alone.