Sash Window Horns

What Are Sash Window Horns?

Sash window horns point down from each side of the base of the upper sash window frame, & were originally used in timber sash windows to strengthen its structure.

Sash horns are a traditional feature which make sash windows look more authentic. Now mostly just for decoration they were originally put in place to reinforce the joints and stop the sash windows from opening too far. 

Original Sash Window Horns

Original sash horns in period properties, may still be important to the structure of the window and therefore should not be removed.

Clip-on Or “False” Sash Window Horns

You can purchase clip-on sash window horns for UPVC or timber sash windows top create the mock visual appeal of an original horn.

Run-Through Sash Window Horns

“Run-Through” or “Continuous”,  are working sash window horns fitted with flush fitting end caps to close the chamber mechanisms. So they are part of the structure of the window itself and look much more authentic.

Which type is better ?

This pretty much comes down to cost obviously as clip-on or stick on sash window horns can provide an authentic-looking appearance from a distance, but if authenticity is a consideration, then a run through horn is not a wise design choice.

If you would like to talk to us about a sash window installation in London project please get in touch.

London Sash Window Company
1432a Clock Tower Rd, Isleworth London TW7 6DT

“We’ve recently had 12 large sash windows fully refurbished and have been extremely impressed by the quality of the workmanship, attention to detail and customer service.”


Mr C Smith, London

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