Blog
-
March 05, 2025
Colin Genge on the Evolution of Building Science
Watch the full episode of The FlowLab podcast, where we talked
about the evolution of Building science with Colin Genge!It was fantastic to catch up with Colin Genge, one of Retrotec's original founders, on The Flow Lab Podcast. During the episode, we explored the origins of blower door technology and its role in the early energy conservation initiatives that began in the 1980s.
Colin shared incredible insights into developing the first blower doors, which originated
-
February 19, 2025
Reflecting on the Origins of Airtightness Testing with Harold Orr
Watch the full episode of The FlowLab podcast, where we dive deeper
into Harold’s stories and explore the future of airtightness testing.At Retrotec, we have always been passionate about innovation in airtightness testing, which is why it was an absolute privilege to sit down with one
-
March 12, 2024
Introduction
As Co-CEO of Retrotec, a company at the forefront of building performance technology since 1995, I've had the privilege of contributing to the development of some of the industry’s leading digital pressure gauges and fans. My name is Ben, and alongside my role at Retrotec, I've embarked on a personal project that leverages my professional expertise for a cause close to my heart – creating a state-of-the-art floral cooler for my wife, Kelli's, business, Country Bouquets.The Genesis of the Project
Kelli's passion for designing flowers for weddings -
October 28, 2023
In a full-circle moment, Retrotec recently joined forces with Jon Walters from Northwest Design (NW Design) to conduct a critical blower door test on his newly constructed multi-use building. Since 1995, NW Design has been a loyal partner and supplier to Retrotec, delivering top-notch fabric products such as Cloth Door Panels, Carrying Cases for our aluminum door frames, and carrying cases for our blower door fans and digital gauges. It was high time we returned the favor.
A Building Journey Rife with Challenges
Initiated in 2020, Jon and his father embarked on a mission to erect a 21,000 sq ft. multi-use building adjacent to NW Design's existing facility.
-
-
April 13, 2023
One great feature of the DM32 and DM32X digital gauges is the ability to show the total hole size if all of the holes, cracks, and gaps in the building envelope were added up into one large hole. But there are several options for this. The most common that are often discussed in the building science and HVAC industries are effective leakage area (ELA) and equivalent leakage area (EqLA). So, what is the difference between the two? Which one is correct?
-
February 10, 2023
A blower door test is a way to measure the air permeability of buildings. The test is used to measure air infiltration, air leakage, and general air tightness in a building’s envelope. One of the main long-term benefits of blower door testing is to ultimately reduce the cost of energy bills by identifying, and then fixing, areas of energy loss.
For companies located in the Netherlands, new fiscal benefits now exist to further incentivize taking action.
-
October 28, 2022
By: Sam Myers, Retrotec
If you are a trainer or educator in the building science field, having a visual aid to demonstrate scenarios that occur in real buildings is the next best thing to teaching on a job site. Air leakage in buildings can be a complicated topic to cover. To present the material in an effective manner, it’s helpful to have a volume of space, or a mockup, where you can manipulate building pressures, temperature, leakage, and hole sizes that connect multiple zones. This provides the ability to show students the physical principles that drive pressure change inside the envelope. A mockup also allows trainers to demonstrate how buildings can be tested and investigated with blower doors, duct testers, high-resolution manometers, thermal imagers, and smoke generators.
-
October 18, 2022
This article was originally published from Vakblad Heat Pumps. To view the original article (in Dutch), click here.
A home must be sufficiently insulated to use a heat pump. An infrared camera is often used to find out whether this is the case. But that's not enough, says Frans Dam, energy consultant and thermography teacher. According to him, additional techniques are needed to know exactly where any thermal bridges or energy leaks are located.
Frans Dam summarizes his work as 'discovering
-
June 21, 2022
Unfortunately no, any kind of dye in the fluid will clog the vaporizer. It will also stain the room being smoked as the dye wont vaporize.
If you are having issues seeing the smoke, more light in the room will help you trace it. Also remember that higher pressure differentials will increase the smoke movement. Lower pressures will slow the smoke movement down.
