ABSTRACT
This paper presents some selected findings of an investigation of moisture response to different climate parameters using statistical analysis of measurements of moisture in ventilated wooden cladding with two-stage tightening. The statistical approach described is intended to provide a broader basis for analyses of the potential risk for decay in different climates. The work is a first attempt towards a cladding moisture exposure decay risk index, allowing for simple differentiation of the need for protective action through preservative treatment or architectural design. Differences in yearly average moisture content and time with moisture content above 20% between west and east facing facades were attributed to differences in wind driven rain on the two facades. Through regression analyses, air temperature, global radiation and wind speed were found to contribute the most to measured variations in moisture content in the claddings.
