Guides, advice and news from Wandsworth Sash Windows, covering timber sash windows, casement windows and doors for London period homes: repair or replacement, draught-proofing, glazing options, costs and planning permission in conservation areas.
Double glazed and vacuum glazed sash windows: your options and what to expect Last updated: October 2026 Yes, sash windows can be double glazed, but not usually by putting double glazing into the sashes you already have. Original sashes are too slim to hold a standard double glazed unit. Your realistic options are new double…
Sash Window Draught Proofing London | Costs & How It Works Original sash windows are a beautiful feature of London period properties but also can be very draughty which increases your heating bills. Draught proofing sash windows is one of the simplest ways to make a period home feel warmer, quieter and more secure without…
Repair or replace? How to decide what is best for your London sash windows London homeowners often contact us knowing that they need to have work done to their sash windows, but are unsure if they need to repair or replace sash windows. Often both options are possible so the question becomes which is the…
Sash windows are a standout feature in London’s wealth of period properties. An elegant architectural asset, they deserve the very best when it comes to window dressing. To weigh up your options and help you make an informed decision, we’ve partnered with window dressing specialists, Hillarys. Their made-to-measure curtains, blinds, and shutters are renowned…
If you’re thinking about enlarging a window, shrinking an opening, or turning a window into French doors, this is the moment to pause and check first. These are structural alterations to openings, not routine window work, and they sit in a higher-risk category for approvals, costs, and timescales. What follows is a practical guide to…
Traditional sash windows have a well-earned reputation for elegance, light, and airflow – but homeowners often ask the same two questions: are sash windows safe, and are sash windows secure? The reassuring answer is yes… when they’re correctly fitted, properly maintained, and paired with the right hardware and habits. This isn’t about turning your home…
As 2026 rolls in, the conversation around windows is getting smarter. Homeowners, architects and specifiers are weighing sustainability, longevity and lifetime maintenance alongside looks and price. A big driver behind this shift is protective finishing: modern, water-borne coating systems that safeguard timber, stretch maintenance cycles, and improve indoor air quality. In this article, we gather…
If you’re pricing up work on a period property, it’s normal to feel a little stuck at the starting line. One company quotes £1,200, another says £3,000, and suddenly you’re wondering if you’ve missed something obvious. So, how much do timber sash windows cost in real life, for real homes, and what’s actually sitting behind…
As sash window experts, we are well placed to explain this unique type of window to our customers. People often want to know about the different components that make up a sash window, and to understand where it gets its name. We are regularly asked the question, “What exactly is a window sash”? So to…
Sash windows are a favourite in so many character and period homes across the UK, but they can sometimes be prone to allowing in some frigid winter air. If you’re wondering how to insulate sash windows to improve comfort and energy efficiency all year round, you’re in the right place. Whether you’re battling icy winter…