inadequate or poorly insulated cavity wall insulation
defective window frames without cold bridge interruption
bad or not at all insulated roller blinds
Insufficient protection against rising moisture from the ground
insufficient permanent ventilation of the housing
Permanent ventilation of the house
In order to solve the problems, in principle all the causes mentioned can be addressed. However, as cost considerations also need to be taken into
account, a step-by-step approach is often chosen. The easiest, often immediately effective, operation is to provide permanent ventilation of the
house. The principle of this can be well demonstrated with the following scheme from the Spanish construction decree:
The ventilation flow through the house is based on the inlet of fresh air through the outside wall of dry rooms (open arrows: bedrooms, living room),
must be able to circulate through intermediate doors (arrows with double transverse lines) and is discharged through exhaust grilles in the wet rooms
(sealed arrows: bathroom and kitchen).
All rooms, except the bathroom, must also have natural ventilation via window or door. The kitchen must also be equipped with an extractor hood.
In older houses, where this ventilation is in most cases not provided, it is relatively easy to install special ventilation grilles with acoustic
sound attenuation which, if correctly installed, can greatly reduce moisture and condensation problems.
Author : Paul Draaijer, Architect
Mendez Nunez 8,2 E-43004 Tarragona
T. + 34. 977.227.214