Sash window sill replacement or repairs are one of the most common problem areas on timber sash windows. External sills, in particular, bear the brunt of the British weather – and when wood becomes exposed due to cracked or flaking paintwork, rainwater is easily absorbed. And that’s when rot can set in.
Repairing a rotten sill, however, is not as easy as simply replacing the timber. Affixing new timber to a vulnerable sill corner will leave you with the potential for the same problem to happen again. Sill repair is a complex job that requires the expertise of specialists, like the team at Ventrolla.
So, what method do we use to do the job thoroughly?
2. We replace everything we remove with new timber so all joints are new, sturdy and solid.
3. New joints are sealed to prevent water ingress, and because they are higher up the frame, they are less susceptible to future problems caused by water running down and pooling.
FACT: By replacing the lower box frame as well as the sill, we retain the strength and structural integrity of the entire sash box. Removing the bottom of the box also ensures that any rot in the outer cheeks or pulley stiles is also removed.
Any timber windows, especially those that have been poorly maintained are vulnerable to sill damage. A common misconception is that north-facing windows are the worst affected because of the lack of sun. In fact, the opposite can be true. In general, south-facing windows are where early deterioration occurs due to sunlight cracking the paint, allowing moisture to penetrate the sill.
Keeping on top of the maintenance and paintwork is the best way to protect your timber sash windows and sills. They include having a regular painting schedule, where you also keep an eye on the condition of the wood and act as soon as you see signs of rot. A survey from window experts can check this for you if you’re not sure.
If you are suffering from rotten sills and would like us to quote for repairs, or if would like your windows surveyed, don’t hesitate to contact us today.