We take pride in delivering exceptional service and high-quality installations. But don’t just take our word for it—here’s what our happy customers have to say:
Choosing the right home improvement company can be overwhelming, but at KJM Group, we’ve been making it easy for homeowners since 1982. With over 40 years of experience, we specialise in crafting and installing high-performance windows, doors, and conservatories tailored to your needs.
Our success isn’t built on flashy sales tactics or pushy consultations—instead, we rely on honest advice, transparent pricing, and superior craftsmanship. That’s why over 80% of our business comes from recommendations and repeat customers.
Whether you’re replacing a single window, upgrading to energy-efficient doors, or adding a bespoke conservatory, we ensure a seamless and stress-free process.
Expert guidance from non-commissioned professionals
Top-quality materials, including uPVC, aluminium, and timber
10-year warranty for long-term protection and peace of mind
Flexible quote options, including remote estimates based on photos
Widely accredited and trusted by major institutions – Including approvals from Which?, Checkatrade, and FENSA.
KJM Group offers a full range of premium windows, doors, and bespoke conservatories designed to enhance your home’s comfort, style, and efficiency. Whether you’re replacing a single window or planning a full home transformation, we provide high-quality installations backed by a 10-year warranty and delivered with a no-pressure approach.
Upgrade your home with high-performance windows that enhance security, insulation, and aesthetics. Choose from a variety of styles, including uPVC, timber, aluminium, sash, and casement windows—all expertly installed and built to last. Reduce energy bills, increase comfort, and add value to your home with our premium window solutions.
Enhance your home’s security, style, and efficiency with our range of high-quality doors. From composite front doors to sleek bifold and patio doors, we offer durable, weather-resistant options to suit every style.
Whether you’re looking for a traditional timber door or a modern aluminium design, we have the perfect fit for your home.
Create a stunning year-round living space with our beautifully designed conservatories and extensions. Whether you prefer a classic Edwardian or Victorian conservatory, a modern glass extension, or a fully insulated tiled-roof option, we provide bespoke solutions tailored to your home.
Expertly built for comfort, style, and efficiency.
Discover how KJM Group transforms homes with high-performance windows, beautifully crafted doors, and bespoke conservatories. Whether you're looking to boost energy efficiency, enhance curb appeal, or create a stunning new space, our portfolio of projects highlights our commitment to quality and attention to detail.
At KJM Group, we take pride in delivering high-quality, expertly installed windows, doors, and conservatories. Our commitment to excellence is backed by leading industry accreditations, ensuring you receive the best service, materials, and workmanship. We are proud to be approved by:
At KJM Group, we provide expert window, door, and conservatory installations throughout Hampshire and neighbouring counties. We focus on delivering exceptional service, covering key areas such as:
Winchester: Historic homes enhanced with modern, energy-efficient upgrades.
Southampton: Stylish windows and doors for coastal living.
Basingstoke: Seamless home improvements with a focus on quality.
Andover: Trusted locally for 40+ years of craftsmanship.
Salisbury: Bespoke conservatories and home extensions tailored to you.
We know home improvement projects come with a lot of questions. That’s why we’ve compiled answers to some of the most common questions our customers ask.
We understand that home improvements are a big decision, and the last thing you want is a pushy salesperson in your home. Our no-pressure promise ensures that you’ll receive expert advice and a written quotation without any hard-sell tactics. Unlike many companies, our staff are salaried, not commission-based, meaning their goal is to help you find the right solution, not to close a deal. If you’re not ready to decide, that’s fine—we’ll give you the time and space you need.
Getting a quote is simple and hassle-free. You can either schedule an on-site consultation, where we’ll visit your home, or opt for a remote quote. For remote quotes, all you need to do is send us photos of the area, along with any measurements or specifications. Our team will assess your needs and provide a detailed written quote. This option is especially popular with customers looking for convenience and flexibility.
Our comprehensive 10-year warranty covers all products and installations, ensuring your windows, doors, and conservatories are protected against defects in materials or workmanship. Should any issues arise during the warranty period, we will repair or replace the affected product free of charge. This gives you peace of mind knowing that your investment is secure. Our team is always available to address warranty claims quickly and efficiently.
The duration of the installation varies depending on the scope of your project. For single window or door replacements, installations typically take 1-2 days. Larger projects, such as conservatories or whole-house installations, can take several weeks. Before we begin, we’ll provide you with a detailed timeline so you know what to expect. We pride ourselves on efficient, clean, and professional installations, ensuring minimal disruption to your home.
We offer a wide range of styles and materials to suit any home. Our windows include uPVC, timber, aluminium, casement, sash, tilt & turn, and triple glazing options. For doors, we provide composite front doors, aluminium bifold doors, patio doors, back doors, and timber doors. Each option can be customised to fit your style, budget, and energy efficiency needs. Our experts will guide you through the selection process to ensure you choose the best fit for your home.
Yes! Many homeowners find that their old conservatories become too hot in the summer and too cold in the winter due to poor insulation. We offer replacement conservatory roofs, including glass, tiled, and solid roof options. These modern upgrades improve insulation, making your conservatory a comfortable space to use all year round. Our team can help you choose the best roof type based on your needs and budget.
If you encounter any issues after installation, our team is here to help. With our 10-year warranty, you’re fully covered for repairs related to materials or workmanship. Simply contact us, and we’ll inspect the problem and arrange for any necessary repairs or replacements. We prioritise quick resolutions and strive for complete customer satisfaction. Even outside the warranty period, we’re happy to provide assistance and advice.
Proudly serving Hampshire homeowners since 1982 with expert craftsmanship, honest advice, and no-pressure service. Trusted for quality you can count on.
Phone: 01264 359355
Email: [email protected]