The cost varies considerably depending on window size, style, glazing specification, and the number of windows in the project.

A standard casement window starts from a few hundred pounds, including fitting, with larger or more complex styles priced higher.

The best way to get an accurate figure is to request a free, no-obligation quote.

We’ll visit your property, measure every opening, and give you a clear price for the exact specification you want, with no vague estimates or additions later.

We also offer finance options to spread the cost of new windows — ask us about this when you enquire.

In most cases, replacing windows with like-for-like uPVC falls under permitted development in England, meaning no planning permission is required.

This applies to the majority of standard residential properties in Boston.

However, there are exceptions.

If your property is in a conservation area, is a listed building, or is subject to specific planning conditions, restrictions may apply.

Parts of Boston town centre (for example) may have requirements around window style, colour, or material.

If you’re unsure, we can advise based on your property and location, and recommend checking with Boston Borough Council if there’s any doubt before proceeding.

Window energy ratings in the UK are calculated by the British Fenestration Rating Council (BFRC), taking into account thermal transmittance (U-value), solar heat gain, and air leakage.

The scale runs from G (worst) to A+ (best).

A-rated windows provide excellent thermal performance and represent the minimum we’d recommend for any new installation.

A+-rated windows go further, achieving even lower U-values through higher-specification glazing units and optimised frame profiles.

For most Boston homes, A-rated double glazing is the ideal balance of performance and cost.

For properties with larger windows, exposed elevations, or where maximum energy efficiency is a priority, A+ or triple glazing is well worth considering.

Quality uPVC window frames will typically last 25–35 years with minimal maintenance. The frames themselves rarely fail.

What tends to require attention over time are the sealed glazing units (which can mist if the seal breaks), the rubber gaskets, and hardware such as handles and hinges.

We use quality profiles and hardware because we know the longevity of your windows depends directly on the materials fitted.

Cheaper options may be available, but they typically show signs of discolouration, distortion, or hardware failure much sooner.

Many of Boston’s uPVC windows from the 1990s and early 2000s are now reaching the end of their natural lifespan.

If your windows are 20+ years old and showing signs of draughts, misting, or stiff operation, it’s likely time to consider replacement.

Yes.

If your window frames are structurally sound but the sealed units have misted, we can often replace just the glazing unit rather than the entire window.

This is considerably more cost-effective when the frame is still sealing and operating correctly.

We offer a dedicated replacement glass unit service for Boston homeowners.

We’ll assess whether your frames are suitable for unit-only replacement and advise honestly… If the frames are deteriorating, we’ll tell you rather than fitting new units into a frame that’ll need full replacement shortly anyway.

See our Replacement Glass Units page for more information.

Yes.

Modern uPVC profiles have improved significantly in recent years and are available in styles designed specifically for period properties.

Our sliding sash and flush sash ranges replicate the authentic proportions of Victorian and Edwardian windows convincingly.

Available in heritage colours including cream, woodgrain oak, anthracite, and black, these windows suit period properties while delivering modern thermal and security performance that timber frames can’t match without significant ongoing investment.

If your property is in a conservation area or is listed, check the relevant planning constraints before proceeding.

In some cases, timber may be required.

We’re happy to advise on what’s likely to be appropriate for your specific property and location.

Yes.

All our uPVC window installations are guaranteed on both materials and workmanship.

We’ll confirm the specific terms when providing your quote, as these can vary depending on the products specified.

We’re a local business operating entirely within our own community.

Our reputation depends on standing behind the work we do.

If anything isn’t right after installation, we’ll come back and put it right.

No arguments, no excuses.

Yes.

We offer finance options to help spread the cost of new windows.

This can make a significant difference to affordability, particularly for larger properties or full-house replacements.

Visit our Finance page for more information, or ask us about the available options when you request your quote.

One of the biggest advantages of uPVC over timber is how little maintenance it needs.

Here’s all you need to do to keep your windows in excellent condition long-term:

Frames: Wipe down with a mild soap solution and a soft cloth a couple of times a year. Avoid abrasive cleaners or solvents, which can dull the surface over time.

Hardware: Apply a small amount of light machine oil or WD-40 to hinges and moving parts once or twice a year to keep everything operating smoothly.

Rubber seals & gaskets: Check these periodically and apply a silicone-based dressing to keep them supple. Hard, cracked gaskets allow draughts and can be replaced affordably if needed.

Drainage channels: Check that any drainage holes in the bottom rail are clear of debris; blocked drainage can cause water to pool in the frame over time.