Re: Refurbishment of sash widows › Flat Chat Strata Forum › Common Property › Refurbishment of sash widows › Current Page 17/12/2016 at 9:41 am #26015 Lady PenelopeStrataguru Fairgo – Balcony walls are different from external walls. The comment that you cut and pasted was referring to a balcony wall. Are the wooden sash windows located in a balcony wall or are they located in an exterior wall that is NOT a balcony wall?