Windows, doors & extensions across Essex · Brightlingsea showroom
Slim aluminium frames, a generous choice of opening styles and the freedom to make every room your own.
ALITHERM 400 · BROCHURE INSPIRATION
Choose fixed lights, side-hung or top-hung casements, with a separate tilt-and-turn option available by quotation. Alitherm 400 uses a thermally broken aluminium construction and a 70 mm frame. Its range of sash profiles lets you coordinate windows across an extension and the existing house.
Compare layouts, then choose colours, glass and hardware in the designer.
One opening light, one fixed light.
Brochure inspiration photo, not an exact layout match.
Two opening lights with a central fixed light.
Brochure inspiration photo, not an exact layout match.
A two-light design with decorative glazing bars.
Brochure inspiration photo, not an exact layout match.
A fixed pane can give a simple view, while a side-hung casement adds an opening where you need ventilation. Start with the two-pane or three-pane example, then discuss any top-hung fanlights or larger combinations with us. The visualiser is a starting point; it does not cover every possible configuration.
Overall dimensions, the number of opening lights, glazing specification, decorative bars and colour combinations all affect the quotation. Installation access, the condition of the opening and the extent of making good also need to be checked.
Use our estimate to compare design preferences. Send the selected design with photographs and the number of windows required for a more useful first discussion.
Design your Alitherm 400 window ↗Explore the details and get an indicative fitted price for your chosen design.
Schematic preview, not a product photograph. Glass appearance, frame proportions, bars and hardware are indicative.
Screen colours are approximate. Special finishes shown as a £125 illustrative allowance; exact finish pricing and availability require confirmation.
Budget estimate only, not a confirmed Spectrum price. Final specification and cost subject to survey.
Enquire about this design ↗Estimates assume one standard-access replacement window, installation, removal of the existing frame and basic making good. Scaffolding, structural alterations, specialist glazing and decoration are excluded. Glass and hardware compatibility must be checked before ordering.
Go bold, blend in, or choose a different finish for each side of your windows.
Textured finishes with a tactile surface. These selected shades offer alternatives to a smooth RAL finish.
Metallic-inspired powder-coated finishes with the character of an anodised appearance.
Soft, traditional shades for cottage and period-inspired designs. Planning approval remains a separate consideration.
Everyday neutrals and deeper architectural colours, including textured options within the wider collection.
Selected colours from Smart’s collections, all selectable in the window visualiser. Swatches approximate colour only, not texture or metallic sheen. View Smart’s complete colour guide ↗
Explore RAL colours alongside Smart’s Sensations textured finishes, Alchemy metallics, Naturals and Cotswold palettes. Ask us about the finishes available for your chosen profiles.
On-screen colours are approximate. View a physical sample before ordering. Special finishes and dual colours can affect lead times and price.
Compare modern lever and traditional-style handles, then choose a finish that suits the frame. We’ll check locking, restrictors, ventilation and escape requirements as part of your specification.
The visualiser shows possible design preferences; not every combination is available on every window.
Explore photography and product details from Smart’s brochures. Select an image to view it larger.
Images © Smart Systems and credited photographers. Brochure photographs are inspiration; some show suitable project types rather than a verified installation of the selected system.
Short, silent brochure image tours. Play here or expand to full screen.
Brochure photo tour · not installation footage
Brochure photo tour · not installation footage
Brochure photo tour · not installation footage
0% finance over 12 months is available on qualifying projects. Talk to us about eligibility and the deposit required for your installation.
Window finance options ↗*Illustration: £3,000 borrowed, 12 payments of £250, £3,000 total loan repayment, £0 interest. Any deposit is additional. Not a credit offer. Finance is subject to status, eligibility and lender terms; confirm current terms with Spectrum.
Spectrum Glazing introduces finance through Ideal4Finance (Ideal Sales Solutions Ltd, a credit broker, not a lender; FRN 703401). Ask for the current finance disclosures before applying.
Smart aluminium windows are available to view at our showroom. Feel the finish, try the handles and talk through the right style for your home with our family-run team.
18 High Street, Brightlingsea
Colchester, Essex CO7 0AE
Visiting for a particular range, colour or handle? Call ahead so we can confirm the displays and samples available.
Replacing one tired window or planning a whole-house transformation? We’ll help you balance appearance, ventilation, privacy and budget.
Alitherm 400 is a useful starting point for replacement aluminium windows and new extensions. Compare fixed lights with opening casements to balance the view, ventilation and access for cleaning. Your survey confirms which configuration works in each room.
This preview starts at an illustrative £895 including VAT for a 1200 × 1200 mm two-pane window, based on the installation assumptions shown in the visualiser. It is a budget example, not an approved Spectrum quotation. Sizes, glass, access and finishes change the final price.
Yes. The Flush page here covers the Alitherm 400 flush-sash option. Compare it with the standard sash before choosing the external appearance; the quotation should identify the precise frame and sash specification.
Yes, select white inside in the designer to preview a dual-colour window. The display switches to the internal view. Final finish availability and the price allowance are confirmed with your quotation.
Our Brightlingsea showroom is a place to compare Smart windows in person before deciding on your home. We discuss projects in Colchester, Clacton-on-Sea, Chelmsford, Maldon, Wivenhoe and the surrounding Essex area.
For exposed or coastal homes, tell us about the location so the finish, hardware and care requirements can be considered in the specification. Call 01206 258056 to discuss your property and the displays available.
Visit our Brightlingsea window showroom ↗Considering alternatives? Compare Spectrum’s aluminium window ranges.
Tell us a little about your project and include your window design. We’ll help you take the next step towards a measured quotation.
01206 258056
sales@spectrumglazing.co.uk
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