Investigation Of The Hygrothermal Performance
Of Wooden Beam Ends Embedded In Inside
Insulated Outside Walls
Author(s)
H. Stopp & P. Strangfeld
Abstract
The inside insulation has been investigated in the past by means of scientific
institutions as a necessary method in connection with the thermal improvement
of worth-preserving facades of architectonic heritage. In the case of fair faced
brickwork it is established on homogenous areas of the wall, for instance as a
variant of capillary active systems or as a classical version with a
humid-dependent vapor barrier. With regard to the insulation of special details,
e.g. embedded wooden beam ends within areas of outside walls, the opinion of
experts differs considerably. Both the total ventilation of the beam ends and
complete air tightness are proposed. In line with the new European directive on
the energy efficiency of buildings, innovative ideas should also be developed in
the field of building physics in order to realize the restrictions without damage to
building envelope parts. The main point of this paper is the investigation of the
hygrothermal situation of embedded beam ends in inside insulated outside walls,
dependent on time and climate boundary conditions. The topics are treated by
means of in situ measurements in two test houses in the eastern part of Germany
under condition of use and by experiments in connection with an erected test
stand. A comprehensive numerical simulation of the coupled heat- and mass
transfer supports the measurements to reduce the experimental work. In principle
there are several options to avoid the effects of the hygrothermal deficiencies of
the structure caused or intensified by inside insulation. Hygrothermal effects are
quantified and solutions are found for workmanship without damage.
Keywords: wooden beam ends, worth-preserving facades, heating energy
saving, hygrothermal performance, damages to structures.
Keywords
wooden beam ends, worth-preserving facades, heating energy
saving, hygrothermal performance, damages to structures.
Related Book
Other papers in this volume
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