Blower door test
A blower door test is nothing else but checking the building for uncontrolled loss of air caused by cracks and seams in the construction. With new premises and or renovation projects it will be compulsory to hand over a epc calculation accompanying a construction request as of the year 2000. This contains a calculated value to which the construction must comply. This is called the Qv-10 value. If the construction does not meet this value, it will be a fault and the project can not be completed as it does not meet the building permit.
How is it implemented?
The test will be implemented by application of calibrated ventilators which are placed in the door opening. At the same time all installed ventilation devices are closed and roof and façade openings as well. A special balloon is fitted after which the building will be put in a hold down position, (air is sucked in from the outside to the inside) to assess how much air in cubic dm enters the building. The leakages will be detected thermografically and made visible. After this test the building is put in an overpressure situation and where the leakages in the building have been made visible, a mist is entered to see where the air leaves the building. Also during this test the amount of lost air is measured.
Energy loss
High costs as a result of uncontrolled heat loss.
All heated air that leaves the building uncontrolled results in an enormous energy loss. During these tests, the loss of air in cubic meters is measured exactly.
Any place where we implemented the test, the inhabitants are usually startled at the extra costs.
Condensation problems
To avoid Condensation problems (thatched roofs).
With an air leak in the body of the building, warm damp air enters the construction and will condense at the dewpoint.
As a result of this the construction as for example protruding parts at roofs and gutters as well as a thatched roof, attached to an insulated roof plate, will be affected within a short time by fungi and thus will start deteriorating.
Inquire about the possibilities
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