Tag Archives: Passiv Haus
How does the sector tackle a growing housing shortage and expand infrastructure services while also achieving emissions reductions in line with the government targets from the built environment by 2030? Meeting this challenge will require a rapid decrease in the use of carbon-intensive building materials in the next few years and an increase in low-carbon alternatives. Building materials account for roughly 19% of the UK’s total greenhouse gas emissions
Based on the envelope area of a 1,900 square foot certified Passive House If built just to building regulations (a leakage rate 10m3/hr/m2) the equivalent size hole in the building once everything has been sealed up would be approximately 440 x 440mm. Whereas what was achieved on this Passivhaus was a leakage area that is 10 times smaller at just 44 x 44mm To put this leakage area into perspective, if a building was built to the backstop allowable leakage rate for building regulations, you could leave a hole in the wall the size of a typical ATM
In the course of our day to day business, we encounter plenty of customers, builders and trades who find U values a little confusing especially when it comes to understanding what the U value actually means and how it will affect or benefit the performance of a building, so we have compiled a brief 'U-Value for dummies' style explanation to help.
There are a number of terms concerned with construction that are often misunderstood or misused, would you be comfortable explaining ‘breathability’ to someone else? before reading on try to create a definition in your mind you would be happy to go public with. There is no intention to deceive it’s just that building terms are often widely used without anyone asking for a full explanation, maybe people don’t ask due to shyness or maybe because the word itself appears self explanatory, or so you might think.