## 3 Results
### Results from the Built-In Moisture Test  
The moisture distribution of the wood frames after the humidification phase was evaluated with an additional wood frame. The wood moisture of this piece was measured after the humidification with a handheld wood moisture meter (Gann hydromette HT 75). The moisture content of the frame was 19-20 weight-% in the frame core, 21-24 weight-% 1 cm from the outer surface, and 25-34% 0.2 cm from the surface. Consequently, the moisture distribution of the frames was ascending towards the outer surface. The climate conditions during the built-in moisture test are presented in Figure 3 with the corresponding average values for the test period. In addition, Figure 3 presents measurement results from temperature and relative humidity in the structures. The measured RH varied significantly depending on the structure and measurement point. The highly insulated walls HI1-HI3 had largely equal rates of decrease in the RH values in the cold side of the wood frame. Here, the relative humidity reached a level of 60-65% in 42 days, with the HI3 wall reaching the 65% value. This result indicates that the gypsum board behind the wb-mineral wool in wall HI3 has a small retarding effect on the drying out ability of the wall. For the baseline wall the RH settled to a level of 80-85% during the first 42 days, which is probably connected to the lower thermal resistance of the gypsum board compared to the wind barrier mineral wool used in HI1-3 walls. The changes in the RH-values during the rest of the test (62 days) were minimal, indicating that most of the built-in moisture had dried from the structures. Measurements from the warm side of the wood frame showed great resemblance in the RH-curve form. \begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline \multicolumn{1}{c}{**Material**} & \multicolumn{1}{c}{**Density [kg/m\({}^{3}\)]**} & \multicolumn{5}{c}{**Relative Humidity [\%]**} \\ \hline  & & **24.5** & **39** & **57** & **72** & **93** \\ \hline  & & & & & & & \\ \hline GW & 23.7 & 1.1 & 1.3 & 1.7 & 1.6 & 2.1 \\ GW (wb) & 68.6 & 1.2 & 1.1 & 1.5 & 1.4 & 1.9 \\ SW & 30.9 & 1.3 & 1.3 & 1.3 & 1.2 & 2.1 \\ SW (wb) & 96.4 & 1.1 & 1.3 & 1.3 & 1.2 & 2.1 \\ GW coating (Sd) & - & 0.03 & 0.02 & 0.01 & 0.01 & 0.02 \\ SW coating (Sd) & - & 0.06 & 0.04 & 0.02 & 0.04 & 0.04 \\ Gypsum (wb) & 759.2 & 5.2 & 5.4 & 7.4 & 7.4 & 8,0 \\ Nordic softwood & 513.5 & 289.7 & 94.5 & 29.2 & 25.1 & 7.9 \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Calculated water vapor diffusion resistance factors (\(\upmu\)) and Sd-values of the coatings based on the measurement results from the cup-tests [12]. \begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline \multicolumn{1}{c}{**Material**} & \multicolumn{1}{c}{**Density [kg/m\({}^{3}\)]**} & \multicolumn{5}{c}{**Relative Humidity [\%]**} \\ \hline  & & **24.5** & **39** & **57** & **72** & **93** \\ \hline  & & & & & & & & \\ \hline GW & 23.7 & 1.1 & 1.3 & 1.7 & 1.6 & 2.1 \\ GW (wb) & 68.6 & 1.2 & 1.1 & 1.5 & 1.4 & 1.9 \\ SW & 30.9 & 1.3 & 1.3 & 1.3 & 1.2 & 2.1 \\ SW (wb) & 96.4 & 1.1 & 1.3 & 1.3 & 1.2 & 2.1 \\ GW coating (Sd) & - & 0.03 & 0.02 & 0.01 & 0.01 & 0.02 \\ SW coating (Sd) & - & 0.06 & 0.04 & 0.02 & 0.04 & 0.04 \\ Gypsum (wb) & 759.2 & 5.2 & 5.4 & 7.4 & 7.4 & 8,0 \\ Nordic softwood & 513.5 & 289.7 & 94.5 & 29.2 & 25.1 & 7.9 \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Hygroscopic moisture [kg/m\({}^{3}\)] as a function of relative humidity measured according to [13]. Ads stands for adsorption phase and des for desorption phase. However, the RH-level in the baseline wall was 4-20% lower during the test. This notable difference in the RH level, especially in the drying phase, is probably caused by the lower thermal resistance inside the wood frame in the BL wall compared to the HI walls. Most of the RH level change took place during the first 56 days of the test. Measurements behind the wind barrier coating in walls HI1-HI3 showed relatively similar values during the drying phase of the wood frames.