LITTLE KNOWN FACTS ABOUT SASH WINDOWS.

The glass in previous windows is usually the quite early 'plate' or 'wide' glass to 'crown' or 'cylinder'.[five] Aged glass is recognised by its imperfections ('ream') which lead to optical distortion.Besides boosting the structural integrity of windows, sashes generate an airtight seal to protect properties from drafts and dampness.For anyone who