Replacement Windows
Replacement uPVC and aluminium windows, with styles to suit period properties and modern homes.
Essex's local home improvement specialists
Replacement Windows, Doors, Conservatories & Home Extensions in Essex
Transform your home with Spectrum Glazing.
Family-run installers of replacement uPVC and aluminium windows, secure entrance doors, new conservatories and beautifully designed home extensions across Colchester, Brightlingsea and Essex.
CERTASS Registered
Federation of Master Builders
0% finance available*
10-year insurance-backed guarantee on qualifying installations
More space. Brighter living.
What Are You Looking For?
New Conservatories
Plan a new space for dining, relaxing and enjoying your garden, designed around your home.
Home Extensions
Create space for kitchen-dining, a home office or family living with a considered extension design.
0% Finance Available Over 12 Months
Windows. Doors. Conservatories. Extensions.
0% over 12 months is available on qualifying installations. Ask which finance options apply to your project; approval is subject to status and eligibility.
£3,000 financed
£250 × 12
12 equal monthly repayments
£6,000 financed
£500 × 12
12 equal monthly repayments
£12,000 financed
£1,000 × 12
12 equal monthly repayments
£30,000 financed
£2,500 × 12
12 equal monthly repayments
Illustrative finance calculations only, not product prices or a credit offer. Examples assume the full amount shown is financed at 0% over 12 months; total repayment equals the amount financed. Qualifying projects and terms apply.
Spectrum Glazing Ltd is an introducer appointed representative of Ideal Sales Solutions Ltd T/A Ideal4Finance. Ideal Sales Solutions is a credit broker and not a lender (FRN 703401). Finance available subject to status. The rate offered is always provisional and will depend upon your personal circumstances, the loan amount and term.
FEATURED PRODUCT · COMP DOOR
Comp Door Composite Front Doors
Make your entrance your own. Explore Comp Door composite front doors with Spectrum, then use our online door designer to bring your ideas together.
Design a door around your home
Try different door styles, colours, glazing and finishing touches in the designer. Compare your ideas with the character of your property, then speak to our team about your preferred design and installation.
Prefer to see doors in person? Visit our Brightlingsea showroom to compare displays and discuss your options, or start your door design online.
Featured Products
Explore the ranges, then talk through the options for your home.
Comp Door Composite Doors
Entrance styles, glazing and hardware choices.
hup! Home Extensions
A different way to create your next room.
VEKA / uPVC Windows
Casement and flush styles for your home.
Origin Aluminium
Explore aluminium windows and doors.
SILKA Entrance Doors
Discover the Karben aluminium entrance range.
Conservatory Roof Systems
Compare glass, hybrid and tiled roof routes.
Real Homes. Real Spectrum Projects.
Explore installations and building projects from across Essex.
Replacement Windows in Essex
Replacing your windows starts with how you want your home to look and feel. Spectrum Glazing installs replacement windows across Colchester, Brightlingsea and Essex, helping you compare uPVC and aluminium frames, opening styles and glazing choices. Choose familiar casement windows, a flush finish for clean lines, timber-look designs for traditional character, or sliding sash windows to complement a period property. We can discuss colours, handles, ventilation and the specification suited to each room. If you are comparing double glazing in Essex, bring your priorities and existing window details to the showroom. A survey then confirms measurements, installation requirements and the options included in your quotation.
Find Your New Front Door
Your entrance sets the tone for your home. Explore composite doors for a wide choice of designs, premium aluminium entrance doors for a contemporary finish, or practical uPVC front and back doors. Compare colours, glazing, handles and the complete security specification with our team. We will help you choose a door that suits your property and the way you use it.
New Conservatories
Create an additional room with a new conservatory designed for your property. From a practical lean-to to a traditional Victorian or a bright gable-fronted design, start with the space you need for dining, relaxing or family time. We can discuss the layout, frames, glazing and roof together, with the survey and required permissions considered before installation.
Already have a conservatory? Explore replacement roof options separately.
Conservatory roof replacement →hup! Home Extensions
Make room for a kitchen-diner, a dedicated home office or open-plan family living. The hup! system offers a route to a home extension that can be tailored to the way you want to use your space. Discuss the layout, glazing, roof and external finish with Spectrum, and explore genuine local projects to see different approaches. The survey confirms what is suitable for your property.
See genuine hup! projects →From Idea to Finished Room
01
Design
Talk through your ideas, priorities and how you want to use the space.
02
Survey & Specification
Confirm dimensions, materials, glazing and the details of your quotation.
03
Planning & Building Regulations
Identify permissions and approvals where required, and agree who will arrange them.
04
Installation
Your agreed work is scheduled and carried out to the confirmed specification.
05
Finished Home
Review the completed work and receive the relevant handover information.
Visit Our Brightlingsea Showroom
See finishes and displays in person, compare your options and get advice from the Spectrum team.
18 High Street, Brightlingsea, Colchester, Essex CO7 0AE
Planning a visit for a particular product? Contact us to check the displays and samples available.
Why Homeowners Choose Spectrum
Family-run Essex business
CERTASS Registered
Federation of Master Builders
Finance options for qualifying projects
10-year insurance-backed guarantee on qualifying installations
Brightlingsea showroom
Windows, doors and complete projects
What Our Customers Say
Short excerpts from genuine customer reviews already displayed on Spectrum’s website.
“We are extremely happy with our new windows.”
Cecile Morales · Windows
“Everything was smooth and easy”
Sayuri Holman · Doors
“…thrilled with the results.”
Maxine Long · Extension / garden room
Areas We Cover
Windows, doors, new conservatories and home extensions across Essex, with our showroom in Brightlingsea.
Ready to Make More of Your Home?
Whether you are replacing windows, choosing a new front door or planning more living space, start with a conversation about your home.
