You can apply the boarding either within or overlapping
the frame. In selecting a timber type, please ensure that
the maximum permissible weight is not exceeded so as
not to impair the door action. Wood needs to be protected
from the adverse effects of the environment. It is, therefore,
essential that all timber surfaces receive further treatment
on site using a proprietary stain to protect them against
ultra-violet light, insect and fungal attack. We recommend
a good quality exterior wood stain system for coating the timber.