"Very pleased with the new UPVC windows. The work was carried out to a high standard and I would happily recommend Gemini to anyone."
3,000+
Happy Customers
35
Years Experience
10
Year Guarantee*
FENSA
Registered Installer
Fast
Trustworthy Quotes
Meet Mick
Clear advice, fair pricing and tidy workmanship.
With over 35 years of experience in the window and door industry, Mick prides himself on delivering excellent service and fitting to a high standard.
As a family-run company, Gemini understands the trust involved when work is being carried out in your home. You get a friendly, straightforward service from quote to installation.
WhatsApp GeminiLocal double glazing company
Trusted window and door installers based in Whetstone.
Gemini Windows and Doors is a trusted, family-run double glazing company based in Whetstone, Leicestershire, with over 35 years of experience in the industry.
We specialise in the supply and installation of high-quality uPVC windows and doors, helping local homeowners improve warmth, security, kerb appeal and long-term value.
As a FENSA-registered installer, Gemini provides a professional window installation service, home improvement support and practical home window advice across Leicester and Leicestershire.
Why Choose Us
Why Homeowners Choose Gemini Windows and Doors
Gemini is a local window installation service, home improvement company and home window service with long-standing experience across Leicester and Leicestershire.
With Gemini
The competition
A trusted, family-run double glazing company based in Whetstone, Leicestershire.
A national or sales-led company where you may not deal directly with the person responsible for the work.
Over 35 years of experience supplying and fitting high-quality uPVC windows and doors.
Less proven installation experience or advice that feels generic rather than tailored to your home.
FENSA registered for replacement window and door installations.
Unclear certification, paperwork or Building Regulations compliance after the installation.
A practical local service built around careful fitting, clear communication and tidy workmanship.
Pressure selling, vague timescales or a finish that does not match what was promised.
Low-maintenance uPVC windows and doors with clear guarantee guidance.
Shorter guarantees or cheaper specifications that may need more attention later.
A local reputation built across Leicester and Leicestershire through recommendations and repeat work.
A less personal service where local accountability can be harder to pin down.
Areas We Cover
Local Window and Door Installations Across Leicester
Gemini Windows and Doors fits replacement windows and doors across Whetstone, Leicester and the wider Leicestershire area.
AnsteyBarwellBroughton AstleyBurbageClaybrook MagnaClaybrook ParvaCoalvilleCroftCountesthorpeEarl ShiltonEnderbyFrolesworthHinckleyHuncoteIbstockKirby MuxloeKirkby MalloryLeicesterLutterworthNarboroughNewbold VerdonSapcoteSharnfordStapletonStoke GoldingStoney StantonWhetstoneWolvey
Customer feedback over the years
What Our Customers Say
Reliable fitting, careful finishing and helpful advice from first call to final clean-up.
"Absolutely thrilled with my new room and the overall finish. Gemini were kind, understanding, and the workmanship is first class."
Molly H
January 2010"Very professional service throughout. The new windows have made a big difference and the team were a pleasure to deal with."
J Carr
December 2013"Excellent installation of our new conservatory. The work was carried out professionally with no mess left behind and the finished result is immaculate."
D & M Graham
November 2019"We have always used Gemini for replacing windows and doors. The workmanship is consistently of a very high standard and we would definitely recommend."
Customer (Leicester)
April 2026"Used Gemini for multiple windows and a new front door. They were prompt, professional, and gave honest advice, only recommending work that was genuinely needed."
Customer (Leicester)
April 2026"Very professional with high quality workmanship. Always delivered on the agreed date and I would highly recommend to family and friends."
Sandra Rogers
April 2026"Amazing service from survey to completion. Great communication, completed on time, no mess left behind, and excellent value for money."
Martin Renfrey
April 2026FAQs
Common Questions About Gemini
Most window and door installations are completed within 1-2 days, depending on the size of the project and the number of frames being replaced.
Yes, Gemini Windows and Doors is FENSA registered, helping ensure replacement window and door installations meet current Building Regulations.
Yes. Gemini provides a 10 year guarantee on uPVC frames, with local aftercare if you need help later.
Gemini can fit REHAU casement windows, bay windows, bow windows, fixed panes, top openers, side openers, flush fit windows and decorative glazing layouts.
Yes. Standard windows are A energy rated as standard, with options depending on the product, glazing and specification chosen for your property.
Modern glazing and well-fitted frames can help reduce condensation, draughts and outside noise compared with older window units.
Yes, Gemini supplies and fits composite doors across Leicester and Leicestershire, including Solidor options, secure hardware, colours and glazing choices.
Yes. Door colour, glass style, handles, letterplates, knockers and other hardware can all be discussed during your quote.
Modern composite and uPVC doors are designed around strength, weather resistance and secure locking. Correct measuring and fitting are key to getting the best result.
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Ready to transform your home? Speak directly with Gemini.