Prior to the internal architrave being fixed to the window linings, we will need to fill any gaps with can foam to complete the insulation and avoid any air gaps etc.
After allowing the foam a day to expand, any excess is cut off and then the architrave can be fitted. With Architraves, you either use the same material as the logs, or something that is noticeably different so that it does not look like a poor attempt at a match. We have settled on American Oak to go round the windows and doors as it will take the knocks better than Western Red Cedar.
