Fig. 7From: Improving durability of cross laminated timber (CLT) with borate treatmentShear strength of untreated, borate-treated, and commercially dip-treated (CT) Douglas-fir samples bonded with PU and EPI adhesives. The borate retention of the CLT sample was obtained at 2.76 kg/m3. Means with the same letters are not significantly different at the 0.05 confidence interval (p values < 0.05)Back to article page