Can you replace windows in winter? Why you don’t need to wait until spring

5 min read Windows
Published 21st October 2026 Last updated 28th October 2026

It’s one of the questions we hear most as the nights draw in. Can you replace windows in winter, or should you wait until spring? The short answer is yes, you can. Our fitters install windows all year round, and for many homeowners winter is actually the best time to upgrade.

If draughty frames, misted glass or chilly rooms are already bothering you, there’s no need to put up with them until April. Here’s how winter window installation in Surrey works, how we keep your home warm and secure while we’re with you, and why upgrading before the coldest months makes sense.

The myth: windows can only be fitted in warm weather

It’s easy to see where the worry comes from. Taking a window out in December sounds like an open invitation to the cold. In practice, a modern installation is far more controlled than most people imagine.

Today’s frames, sealants and fixings are made to perform in the British climate, cold snaps included. Our team plans each job around the forecast, so a crisp, dry winter’s day is often just as good for fitting as a mild one in May.

home in winter

How a winter window installation works

We never strip out every window at once. Instead, our fitters work one window at a time.

  1. Protect the room. Dust sheets go down and furniture near the window is covered or moved out of the way.
  2. Remove the old window. The old frame comes out carefully, with as little disturbance to the surrounding brickwork and plaster as possible.
  3. Fit the new window straight away. The new frame goes in and is fixed, levelled and sealed before the team moves on.
  4. Finish and tidy. Trims are fitted, the area is cleaned and the room is ready to use again.

Because each opening is filled before the next one is touched, only one small part of your home is ever open to the air, and only for a short time.

How your home stays warm

Keeping the heat in is something our fitters think about all day. A few simple steps make a real difference.

  • Internal doors stay closed, so the room being worked on is the only one affected.
  • Your heating can stay on throughout, keeping the rest of the house comfortable.
  • Each opening is left clear for as short a time as possible.

Once a new window is in, it starts working straight away. The room warms up again quickly, and from then on it holds its heat far better than before.

Your home stays secure

Security matters just as much in winter, when it gets dark early. Because we fit one window at a time and finish each opening before moving on, your home is never left with a gap overnight. Before the team leaves, every new window is checked, closed and locked.

Clean, tidy and respectful of your home

Winter often means wet, muddy ground outside, so we take extra care indoors. Dust sheets protect your floors and furniture, and the team clears away old frames and packaging at the end of the job. You’re left with new windows, not a mess to sort out.

The benefits of upgrading before the coldest months

Waiting until spring means spending the hardest part of the year with the windows you already want to replace. Upgrading now brings some clear advantages.

  • A warmer home sooner. New windows keep heat in right through January and February, when you need it most.
  • Fewer draughts. Modern double glazing seals out the cold air that sneaks in around tired, worn frames.
  • Less condensation. A warmer inner pane means less of the moisture that runs down cold glass on winter mornings.
  • Less heat lost. Well insulated windows help your heating do its job, rather than warming the street outside.
  • A cosier festive season. Book early and you could be enjoying the holidays in a warmer, quieter home.
  • A clearer picture of the problem. Winter shows you exactly where the draughts are, so your survey can focus on the windows that need it most.

Why homeowners across Surrey choose Sheerwater Glass

We’re a family run company, and we’ve been fitting windows and doors across Surrey and Berkshire since 1972. In that time we’ve installed more than 100,000 products and built a reputation for careful work and straight advice.

We’re a Which? Trusted Trader, FENSA registered and TrustMark approved, and our customers rate us 4.8 from 3,514 reviews. When you call, you’ll speak to a real person, not a call centre. There’s no pushy sales, just honest advice about what your home needs.

Ready for a warmer home this winter?

There’s no need to wait until spring. Book your free survey today. Call 01932 344 415, or visit our showroom at Unit B5, Moorfield Point, Slyfield Industrial Estate, Guildford.

payment payment

Get A Quote

One of our team would be happy to have a chat with you about your requirements, answer any unanswered questions and measure up at a time that suits you to provide you a free, no obligation quote.

Get A Quote
feedback feedback

Our customers say

“It is no wonder that Sheerwater Glass are one of the oldest and most trusted companies in the Woking area.”John Coleman
More reviews on Checkatrade
location location

Areas we cover

Sheerwater Glass provides window installation and repairs throughout Surrey and the surrounding areas of our new Guildford showroom as well as Woking. If you’re interested in our services, we encourage you to check if we serve customers in your area by simply typing in your postcode.

If you check and find that we don’t serve customers in your area, in some cases, we may be able to help. Please call us to find out more.

Check your postcode