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Draughtproofing

Window insulation is an essential part of a window renovation project. Our sash and casement window expertise will help fill the gaps.
Window insulation is an essential part of a window renovation project. Our sash and casement window expertise will help fill the gaps.

Draughtproofing isn’t just about keeping the cold out. Our expert window restorers add insulation via hidden, rebated sealing strips in key places around the window, putting a stop to rattles too.

As a result, air leakage is reduced by up to 50%, and the sash opens and closes smoothly with minimum effort.

And with better insulation comes better thermal performance, as well as fewer occurrences of dirt, dust and rain ingress. That’s complete insulation from cold, leaks, and premature timber decay and damage.

Our comprehensive draughtproofing ticks all the boxes (and fills all the gaps).

Benefits

Solves draughts and rattling

Reduces dirt, dust and rain ingress

Hidden, rebated seals, not surface-mounted

Tested for water permeability, air tightness and wind resistance

Smoother, easier window operation

Installed by our expert window restorers

Where we apply draughtproofing for sash windows

01

The staff bead, on the bottom rail of the lower sash (also known as the sash stop).

02

The meeting rail, where the two sashes overlap across the centre of the window.

03

The parting bead, at the top of the upper sash, in the centre of the frame.
Side

Why we use the Draftfix sealing system

We use the brand of sash window draughtproofing for a few reasons. First and foremost is the quality of the product, as it’s comprehensively tested for air tightness, water permeability and air resistance. We’ve found that Draftfix is particularly suited to our restoration projects, and the happiness of our customers is top of our list.

Need some tech details? The Draftfix system typically uses a Weatherpile with central fin fixed into a plastic carrier, which is rebated into the bead. The Weatherpile prevents dust and dirt ingress, and the central fin contributes to air tightness. All the seals are rebated into the beading, which means no unsightly, protruding, face-fixed seals.

We know lots about this, so please ask if you need more spec!

More information

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