Subsequent creation of air tightness

An object reconstructed for residential purposes approved to be not sufficiently air tight. With methods that are generally known as inappropriate, it was tried to improve the air tightness subsequently to a reasonable level. Therefore, joints were formed elastically, cavities were filled with insulating material and slots were foamed with construction foam. Costs clearly stayed below the ones that were actually needed for the remediation of the building, but also the success fell short of which could have been achieved with professional methods.