All Scotdoors styles feature a bonded composite construction comprising: 6mm hardwood veneered laminated sheeting. 0.3mm aluminium plate. 48mm insulated core.

This balanced construction gives a high degree of stability, the aluminium providing an effective moisture barrier. The insulating core provides exceptional U-value (0.84) and significantly reduces the effects of temperature differential - the most common cause of door failure.

The frame can be constructed from quality redwood or hardwood. Redwood is the standard.