UPVC Window Installers in Market Rasen
Tired of Cold Drafts, High Bills, and Tired-Looking Windows?
Old, single-glazed or poorly fitted windows are more than just unsightly, they’re one of the biggest causes of heat loss, draughts, condensation, and sky-high energy bills. They can also let in unwanted noise, stick when opening, and ruin the look of your home from the outside.
That’s why so many homeowners are switching to modern uPVC double glazing. Built for insulation, noise reduction and durability, it’s the smart way to improve comfort, reduce heating costs, and instantly update your home’s appearance.
A Simple, Long-Lasting Solution That Works
uPVC windows are designed to solve the problems traditional frames can’t. Made from weather-resistant, low-maintenance materials, they won’t warp, peel or rot, no matter how tough the weather gets.
Our A++ rated glazing options dramatically improve thermal performance, helping to keep warmth in and cold out. Triple glazing is also available for homes in noisier or colder areas, adding an extra layer of protection and peace of mind.
Tel: 01724 845449
Mob: 07970 693698
Built Around Your Style, Not Just Performance
You don’t have to sacrifice looks for practicality. With today’s advanced finishes, uPVC windows come in a wide range of colours and styles to suit any home, from clean modern lines to traditional timber-look designs.
Popular colour options include white, cream, black, grey, brown, and a choice of woodgrain finishes. Want something specific? We also offer RAL colour matching to blend perfectly with your existing home or front door.
Problems We Solve Every Day
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Drafty rooms and rising heating bills?
uPVC frames and A++ glazing (option) create an insulated barrier against the cold. -
Peeling, rotting old frames?
Our uPVC profiles stay looking their best without any painting needed – minimal upkeep only is required. -
Sticky, stiff-to-open windows?
Modern systems glide open with ease and are fully tested for functionality. -
Ugly mismatched windows and doors?
Choose finishes and frames that complement each other beautifully.
Installed with Care. No Mess, No Fuss
Replacing your windows shouldn’t mean a week of disruption. That’s why installations are handled efficiently and cleanly.
The process includes:
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Assessing each opening to check for damage and ensure a perfect fit
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Removing old window units and clearing the space
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Fitting and sealing the new uPVC windows to prevent draughts or water ingress
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Adding trims and finishes for a seamless interior and exterior look
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Testing each unit to ensure smooth operation, airtightness, and long-term performance
It’s everything you’d expect from a professional installation, without the mess or stress.
A Long-Term Investment in Comfort and Peace of Mind
These aren’t just windows—they’re upgrades. With reinforced frames, multi-point locking options, and weather-resistant seals, every window is designed to perform for the long haul.
You also get
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A 10-year manufacturer’s guarantee on all windows
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A full 12-month workmanship warranty on installation
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Installations that meet all relevant building standards
FAQs – uPVC Double Glazing Explained
What problems do uPVC windows solve?
They help eliminate cold draughts, high energy bills, outside noise, and frame maintenance issues. They’re ideal for homes with outdated, inefficient windows.
Are uPVC windows energy-efficient?
Yes—especially with A++ rated glass (option). They improve insulation, reduce heat loss, and can noticeably lower your heating bills.
How long do uPVC windows last?
Most uPVC windows last 20 to 30 years or more, with very little maintenance required.
Can I customise the look of my new windows?
Absolutely. Choose from multiple frame styles, colours, finishes, and glazing options—including RAL colour matching.
Do they improve soundproofing?
Yes. uPVC frames with double or triple A++ glazing can significantly reduce outside noise, making your home quieter and more comfortable.
How disruptive is installation?
Minimal. Most windows are fitted in a day or two, and the process is clean and tidy from start to finish.
Are installations guaranteed?
Yes – We offer a 10 year product guarantee complete with an insurance-backed warranty.
Get a Fast, No-Pressure Quote Today
Explore your options, get expert advice, and see what’s possible. Whether you’re replacing one window or the whole house, you’ll get clear answers and honest recommendations, without the pushy sales pitch.
Related Services
UPVC WIndows
Client Comment
Market Rasen
Melissa Forbes
UPVC WIndows
Client Comment
Market Rasen
Composite Doors fitted new white uPVC windows for our whole house. Jason did the job over two days and was efficient, friendly, and very tidy.
The difference in heat retention is incredible, and the house looks far more updated from the outside. All windows open and close smoothly, and the seals are tight. Excellent job and well worth the cost.
Dominic Preece
UPVC WIndows
Client Comment
Market Rasen
Had two new uPVC windows installed last week—immediate improvement in warmth and no more condensation.
James Hutton
UPVC WIndows
Client Comment
Market Rasen
The old timber windows had started to rot and leaked cold air constantly. These new uPVC ones from Composite Doors are much better.
Jay worked quickly and carefully, and the locking systems feel really solid. Definitely feels like a proper upgrade.
Amber Stokes
UPVC WIndows
Client Comment
Market Rasen
Getting our windows replaced felt like a huge job, but Composite Doors made it painless. Jason was on time, well-prepared, and professional throughout.
We chose triple-glazed uPVC for the road-facing rooms and the difference is remarkable. The windows look smart, open easily, and seal tight. Everything’s more energy efficient and the house is far quieter. Excellent experience from start to finish.
Louise Garrett
UPVC WIndows
Client Comment
Market Rasen
Our house backs onto a railway line and the old windows were useless for noise. Composite Doors fitted triple-glazed units last week and it’s made a huge difference.
Jason was efficient and took time to make sure everything was sealed perfectly. Really impressed with both the product and the service.
Elliot Moss
UPVC WIndows
Client Comment
Market Rasen
We had condensation issues and a lot of external noise. Since having the new windows installed by Composite Doors, the place is quieter and much warmer.
Jason was meticulous with the installation and made sure everything was level and sealed. The windows are easy to clean and open effortlessly. Genuinely pleased with the quality and service throughout.
Jayden Thomas
UPVC WIndows
Client Comment
Market Rasen
I didn’t think windows would make this much of a difference, but they absolutely do. We had uPVC fitted throughout by Jason from Composite Doors and it’s been a fantastic upgrade.
They’re easy to use, reduce outside noise, and have made the whole house feel warmer and brighter. The install was neat and smooth with zero disruption.
Lucy Weller
UPVC WIndows
Client Comment
Market Rasen
The new windows look amazing and feel solid and secure. We were having problems with heat loss and outside noise, both of which have been massively improved.
Jason installed everything efficiently and took time to explain how the locking mechanisms worked. Composite Doors made the whole process smooth from start to finish. Worth every penny.
Zoe Mather
UPVC WIndows
Client Comment
Market Rasen
I can’t speak highly enough of the experience we had with Composite Doors. We replaced nine windows across two floors and Jason made the whole installation process stress-free.
He was polite, tidy, and clearly very experienced. The new uPVC windows are warm, secure, and incredibly easy to use. It’s made the house feel like new again. The rooms hold heat better, and we’ve already noticed a drop in energy use.
Eleanor Preston
UPVC WIndows
Client Comment
Market Rasen
We’ve been renovating our home and decided to get the windows sorted too. Composite Doors replaced every unit quickly, and it’s made a massive difference in warmth and outside noise.
Jason worked like a machine—neat, polite, and clearly knew what he was doing. Can’t believe how much better it all looks and feels.
Katie Dales
UPVC WIndows
Client Comment
Market Rasen
Went with double glazing throughout and can already feel the benefit. Noise from the road has dropped a lot.
Jason worked hard and didn’t cut corners. Composite Doors made the whole process feel easy and stress-free, which was a big help.
Lloyd Turner
UPVC WIndows
Client Comment
Market Rasen
We live on a busy road and the new uPVC windows have significantly reduced outside noise. They open smoothly and look really smart too.
Olivia Burton
UPVC WIndows
Client Comment
Market Rasen
We had been planning this upgrade for ages and Composite Doors made the whole thing easy. Jason turned up when he said he would, installed everything quickly, and left the site spotless.
The new uPVC windows are a game changer—less noise, no cold air, and they look sharp. Our heating bills are already going down and the entire house just feels better.
Noah Bennett
UPVC WIndows
Client Comment
Market Rasen
We’ve just had all front-facing windows replaced and couldn’t be more pleased. The grey frames look stylish and match the front door perfectly.
No more condensation inside and it’s already warmer. Jay from Composite Doors was brilliant—friendly, knowledgeable, and neat. Very happy with the work done.
Stephanie Hughes





Very happy with our choice to go with Composite Doors. The house used to get icy cold in winter, especially near the windows, but that’s gone now.
Jay worked through the install like a pro—neat, respectful, and thorough. He made sure everything locked and sealed properly before finishing up. Great job all round.