Timber window frames are not used very often in the housing industry with aluminium taking over for various reasons.
Initial costs of the aluminium framed windows is less and no need for painting or staining. We now use very few timber framed windows on our projects with the odd exception. However we do tend to use timber framed windows for our front facade details for a sense of warmth and blending with the timber look panel lift garage doors.
Timber window frames
Mark Bryson - Thursday, January 29, 2015