Choose the right profile
Spectus offers a bevelled frame shape or a softer ovolo profile. We will confirm the frame and opening arrangement available for your project.
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Spectus
uPVC Windows
Buy uPVC windows online from PVC Windows Online. Spectus casement windows are made to the sizes and finish you specify, supplied without installation and delivered throughout England and Wales.
Versatile casement windows for replacement glazing, extensions and new openings. uPVC frames offer a practical, low-maintenance alternative to painted timber. Tell us your opening sizes, preferred opening arrangement and finish so your quotation reflects your project.
THE RANGE
Designed around the opening.
Spectus casement windows use impact-resistant uPVC and multi-chambered frames. Choose fixed and outward-opening panes, top-hung or side-hung, to suit the opening and ventilation you need.
Tell us the appearance, operation and practical priorities for your project. We will confirm which available system and configuration is appropriate before you order.
Manufacturer information: Spectus casement windows ↗PHOTO GALLERY
uPVC Windows in detail.
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Images are illustrative of the product type. The exact style, colour and glazing are confirmed with your quotation.
Comfort and security
Spectus describes multi-chambered profiles for insulation, permanently bonded weather gaskets and multipoint locking. The final thermal and security specification depends on the configuration quoted.
Made for your opening
Share manufacturing sizes, opening directions, glass requirements and colour choices. Every quotation is prepared around the combination required for your project.
ENERGY PERFORMANCE
Energy ratings explained.
Casement windows are the most commonly energy-rated product we supply. The rating and U-value achieved come from the combination of frame system and glass unit, not the frame alone.
Window Energy Ratings
Windows in England and Wales are commonly compared using the BFRC Window Energy Rating scale, which runs from A++ down to E. The rating achieved depends on the frame system, glass specification, spacer bar and the size of the unit, so it is confirmed per configuration rather than per range.
U-values
Building Regulations work to U-values (W/m²K) — the lower the figure, the less heat is lost. The figure for Spectus frames depends on the window or door system, glazing and overall specification.
What affects your result
Glass coatings, argon fill, spacer type, frame depth, the number of opening sashes and the overall size all change the final figure. Tell us your target rating and we will quote a specification to suit.
COLOURS & FINISHES
Choose the finish.
Spectus frames are available in white and a selection of coloured and woodgrain foiled finishes. The exact finish and any dual-colour option depend on the chosen system.
White
Cream
Anthracite Grey
Agate Grey
Black
Chartwell Green
Golden Oak
Irish Oak
Rosewood
Colour availability, lead times and any surcharge for non-stock finishes are confirmed with your quotation.
WHAT WE NEED
A quotation built from your plans.
For accurate pricing, provide manufacturing sizes or drawings, quantity, preferred colour, glazing requirements, opening directions and your delivery postcode. Confirm all final sizes with your installer.
01Opening sizes and quantities
02Frame colour and glass requirements
03Opening styles and hardware choices
04Delivery postcode and site access
DELIVERY ACROSS ENGLAND & WALES
Free within 100 miles of Gloucester.
Free delivery applies to orders of £600 or more within 100 miles of Gloucester. For projects more than 100 miles away, a minimum order of £1,500 applies. We confirm delivery arrangements with every quotation.
MORE RANGES
Other windows and doors online.
uPVC DoorsSPECTUS
Sliding Patio DoorsSPECTUS
uPVC French DoorsSPECTUS
Composite DoorsHALLMARKTechnical information for this system is published by the manufacturer: Spectus official website.
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