3 Common Reasons Why Your timber sash windows replacement Isn't Working (And How To Fix It)
http://grafiky.co.uk/The-7-Greatest-Edwardian-Sash-Windows-Mistakes-You-Can-Easily-Avoid.html
Traditional new sash windows made from timber do not have to be high maintenance. Accoya wood can be reused and recycled. Timber frames tend to be expensive, need regular maintenance and can be difficult to replace.