With U.S. building codes now starting to address air tightness with respect to energy efficiency, many builders find themselves struggling to meet the defined ACH50 values (air changes per hour at 50 Pascal) required by their local codes. This measurement is an assessment of air leaks as monitored via the pressurization of the whole building… Read More
Notice: please read to the END of this article, and note the date. #thingswethoughtwedidnthavetoexplain 😉 Gally Tullagher, a builder in Red Lodge MT, was court ordered to refund $5k in damaged testing equipment to the company performing the blower door test — a procedure designed to measure air leaks in a building. “We set up… Read More
Contrary to popular belief and the professional opinion of many, recent study shows health benefits related to living in moldy buildings. Read More
We took part to the “Train the trainer” class, organised by the Passivhaus Institut of Darmstadt on the days following the 2016 edition of the International Passive House Conference.
The class is geared towards passive house experts, who intend to become teachers in the Certified Passive House Designer/Consultant class (CPHD/CPHC) and in the Certified Tradesperson class. Read More
About ten days ago, we took part to the 20th International Passive House Conference in Darmstadt, Germany.
Now at its 20th edition, this passive house-focused event brings together researchers, designers, experts and manufacturers from all around the world. Read More
This week we are busy in Darmstadt, Germany: Enrico just presented at the 20th International Passive House Conference, and he’s currently taking his class to become a certified trainer with the International Passivhaus Institut.
Stay tuned for our articles on the Conference, and about our training programme in Italy and Colorado. Read More
With this article, we cover two very important aspects of glazings: light transmission and the solar heat gain coefficient.
These parameters are extremely important for performing buildings and passive houses, however they are often overlooked by both designers and window manufacturers. Read More
We continue our series of articles on thermal efficiency of windows, describing the glass edge thermal bridge.
As far as thermal bridges go, this one is inevitable, and it represents the weakest point of a well designed thermal envelope. It needs to be analyzed carefully, in order to prevent condensation (or ice) to form on the edge of the glass, discomfort, and an overall drop in the performance of the window/door. Read More
After covering thermal transmittance U and resistance R of opaque assemblies, and insulated glass, we now cover one of the most critical areas of the thermal envelope: window frames.
Good windows are the cornerstone of a performing building for both comfort and energy efficiency, specially if it is a passive house. Read More
Insulated glass units, IGU for short, have been around for a long time.
These elements are of primary importance for the energy balance of highly performing buildings and passive houses: that is why we dedicate this article to the thermal transmittance of insulated glass. Read More