Bringing the sash window in to the modern day, the hidden spring provides a more minimal, no fuss internal finish with an impressive spring balance opening operation whilst still maintaining the character of a traditional sash window from the outside.

Much of the same information about the traditional box depth sash applies here, constructed using engineered timber, available in two box depths, and a host of furniture options, the hidden spring only differs by its operating mechanism, which removes the lead weights and cord/chain.

Without the need for lead weights, our hidden spring sash window is slightly more cost effective than the traditional box sash.

This style is the ideal window for those who are looking for a slightly sleeker internal finish which still retains all the elegance and beauty of an original sash.

Conventional Slim Box Sash Windows are the perfect solution for homes with a narrow sill but want to achieve the traditional appearance of sash windows.

The very traditional style of sash windows is synonymous with Victorian and Georgian terraced houses but with the advent of uPVC windows and double glazing, it was hard to get the windows to fit in the place where the single glazed originals came out.

We make the slimmest sash windows on the market, at around 5.5 inches in depth, these really are the answer for many period properties where the normal sized windows will not fit.