Frequently Asked Questions
We have brought together the questions we are most often asked by homeowners across Surrey and South London, giving you clear guidance on your new Sash Windows.
The price of a new double-glazed wooden sash window typically starts from £2,550 + VAT for a fully finished, fully fitted window.
However, costs can vary depending on the size of the window, the timber you choose, glazing options, and any specialist detailing (such as glazing bars, shaped heads, or bespoke architraves).
At Novells Sash Windows, every quote is completely transparent, no hidden extras, no surprise add-ons, so you’ll always know exactly what you’re paying for before any work begins.
Every new sash window from Novells includes everything needed for a complete, long lasting installation, with no hidden extras.
Your price covers:
- A fully handcrafted double-glazed box sash window
- Premium architraves and bullnose window board
- A factory-spray finish in a durable microporous paint system
- Full installation, including the safe removal and disposal of your old windows
- FENSA certification for Building Regulations compliance
- An insurance-backed guarantee for complete peace of mind
With Novells, the price you see is the price you pay. Fully finished, fully fitted, and built to last.
In most cases, if you own a house, you won’t need planning permission to replace your wooden sash windows like-for-like in a conservation area; however, rules vary by borough for replacing windows in a flat or apartment.
If your home is in an Article 4 area or the building is listed, the rules can be stricter.
The good news is that all our double-glazed wooden sash windows are designed to be conservation area-friendly and heritage accurate, so they usually meet the requirements for conservation areas.
If you're unsure, we can check your property’s status for you and guide you on exactly what’s allowed.
Replacement UPVC windows are definitely not allowed for front elevations in conservation areas, or at all in listed or article 4 properties.
In most cases, if you own a house, you won’t need planning permission to replace your wooden sash windows like-for-like in a conservation area; however, rules vary by borough for replacing windows in a flat or apartment.
If your home is in an Article 4 area or the building is listed, the rules can be stricter.
The good news is that all our double-glazed wooden sash windows are designed to be conservation area-friendly and heritage accurate, so they usually meet the requirements for conservation areas.
If you're unsure, we can check your property’s status for you and guide you on exactly what’s allowed.
Replacement UPVC windows are definitely not allowed for front elevations in conservation areas, or at all in listed or article 4 properties.
Yes, every sash window we supply and fit comes fully spray finished in the workshop using a high-performance microporous paint system.
This gives you a smooth, durable, weather-resistant finish the moment your window is installed.
There’s no on-site priming or undercoating, no extra painting costs, and no unfinished timber.
Your windows arrive beautifully finished and ready to enjoy from day one.
Our typical lead time is 8 - 12 weeks from the point of deposit and final measurements.
This can occasionally be shorter or longer depending on workshop capacity and the time of year, but we’ll always give you an accurate timeframe before you place your order, and keep you updated throughout.
A typical sash window installation takes around a day per window, but exact timings can vary based on access, room layout, and any additional finishing work required.
We always ensure the window is secure at the end of the day. If you’re having multiple windows fitted, we’ll provide a clear schedule so you know exactly what to expect.
No, you will never be left without a window.
We first carry out final measurements, then your new windows are built in the workshop while your existing windows remain in place.
Once they’re ready, we bring the new sash windows to your home and complete the installation on the same day we remove the old ones.
Your home stays secure, weather-tight, and comfortable throughout the entire process.
No, you will never be left without a secure, weather-tight window overnight.
Each window is removed and replaced the same day, and we only take out the windows we are actively working on.
We may work in more than one room at the same time, but even if a window is not fully finished aesthetically, it will always be installed, sealed, and fully secure before we leave.
Your home remains protected, private and safe at every stage of the installation.
Most sash window installations do not require scaffolding.
However, for properties with difficult access, like loft conversions or dormer windows, scaffolding may be needed to ensure the work is carried out safely and to the highest standard. If scaffolding is required, we’ll let you know upfront during the survey, so there are no surprises and no hidden extras.
Yes, we remove and responsibly dispose of your old windows as part of every installation.
There’s no extra charge and nothing for you to organise.
We handle everything from start to finish, so your home is left clean, tidy, and ready to enjoy.
We take great care to minimise disruption, but we believe in being completely transparent. When removing old windows, there can sometimes be minor damage to the surrounding plaster, especially if the existing frame has been affected by damp, rot, or water ingress.
If this happens, we will make good to a basic level, usually applying one base coat of bonding or filler to stabilise and tidy any minor areas. This prepares the surface for finishing, but isn’t a full plastering or decorating service.
If further work is required for a perfect finish, we can recommend a professional decorator who understands the standard of finish our customers expect and can complete the final stages for you.
Our aim is always a clean, secure, long-lasting installation with clear expectations from start to finish.