Airtightness of buildings are reviewed. Use and construction of a blower door is assessed. Air tightness testing is reviewed with practical examples including operation of a blower door is examined. Typical airtightness errors are reviewed through examples. Performing leak detection with smoke and thermography is shown. Standards and documentation requirements are reviewed.
After completing the course, a review module opens up where the individual pages can be accessed directly and completed as needed. The course is designed so that it may be necessary and helpful to review parts of the course, e.g. when performing a blower door test.
Target group for blower door course
The course is a good start to learning the correct execution of blower door tests, but also suitable for consultants who want more knowledge about pressure testing. The craftsman can also learn through the course; typical errors as well as testing and troubleshooting options with a blower door.
Other options with a blower door
For leak detection using building thermography, the blower door is a great tool for creating a constant negative pressure. Leak detection can also be carried out with smoke, typically working with positive pressure.
Recommendations for performing pressure testing
Along with a blower door, it's good to have a smoke machine and a thermal imaging camera for leak detection. TSE-Learning recommends taking the thermography courses to support the work with pressure testing.
Thermography of leaking corner in twig.
Draft
Moisture
Energy loss
Tightness
Biggest energy losses in pre-2000 houses
Leaks account for the largest energy loss in older homes. Tightness is an important focus area: There are several reasons why a tight house is good, let's start with comfort. We all know the discomfort of sitting in a draft. We're going to be cold, so we turn up the radiator. Not only is there an energy loss due to cold air entering, but there is, for example, a need for 23 degrees instead of 21.
Moisture and mold
If there is a leak in the construction where warm moist air can escape, it will give off its moisture. Cooling leads to moisture and eventually a mold problem. This issue is the critical one because it often goes undetected and leads to long-term illness and extensive property damage.
Ventilation
Ventilation is important, but it's not random leaks depending on wind direction that should determine this. A good investment for indoor climate and health is a ventilation system. If you don't have a ventilation system, a good and energy-efficient way to ventilate is to create short-term drafts with all doors and windows open.
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