Airtightness of masonry walls.

This paper presents results of air leakage measurements on brick walls and concrete block walls, used as outer or inner leaf of a cavity wall. The results are obtained using a pressure box on a series of test walls. The variable parameters that are examined: workmanship, pointing of the joints andplastering of the inner leaf. Out of the results can be concluded that, in general, only a plastered wall can guarantee a sufficient airtightness.

Wall insulation.

   

Controlling condensation risk.

Effect of an exterior air infiltration barrier on moisture condensation and accumulation within insulated frame wall cavities.

A series of laboratory tests for moisture problems were conducted on an air infiltration barrier. One series involved the condition where warm and moist indoor air circulates through wall cavities. 

Thermal insulation and ventilation of walls and roofs. Warmte-isolatie en ventilatie van muren en daken.

With correct application of vapour barriers the ventilation of building structures is in general not necessary, unless such barriers prevent the escape of trapped moisture from moisture-sensitive - especially organic - materials. Indoor and outd

Formaldehyde release from building products

During the last fifteen years Urea-Formaldehyde (UF) bonded particle board, medium density fiberboard and plywood have replaced whole wood as a construction material for flooring, wall panelling cabinet work and furniture. At the same time,

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