Quality Windows, Doors, Bi-Fold Doors and Conservatories to the Trade, DIY and Commercial
Highseal Manufacturing Company
Low maintenance
PVC-u will never flake, peel, rust or rot and is therefore relatively maintenance free.
Benefit
Unlike wooden frames which usually require frequent treatment or re-painting. PVC-u windows will occasionally need washing down with hot soapy water.
PVC-u is also more environmentally friendly than timber as it can be recycled over and over again to produce new windows.
Thermally Efficient
Standard windows are 28mm thick insulated double-glazed units for low-e energy rating and thermal efficiency. We also supply a 36mm triple-glazed option.
Benefit
Reinforced with 100% recycled PVC-u bars for added strength and increased thermal performance.
High Durability
Glazing beads are fitted internally for extra security and opening frames are fully weather-stripped.
Benefit
Modern PVC-u frames have a smooth, consistent and reliable operation.



PVC-u Windows
Highseal offers a vast range of PVC-u products such as PVC-u windows which includes vertical sliding sash windows, tilt and turns windows, casement windows, bays and bow windows that can blend into their surroundings and enhance the character of your property.
Our products can complement every style of property; period or modern.
We can help you create bespoke designs from our impressive choice of styles and decorative options that guarantee to enhance any property, new or old.
Our PVC-u windows are competitively priced and come with the assurance of the BSI Kitemark quality guarantee.
Casement Windows
You can choose top-opening or side-opening deigns to suit the look and use of each room. The PVC-u windows come with the Green Guide A rating.
Benefit
Casement windows are quieter, safer, very secure and enegery efficient which help to reduce energy bills.
Bay Windows
Bay windows add more space and a classic style to your home.
Benefit
They are thermally efficient, have secure locking hardware and come with a range of glazing options.
Bow Windows
Built out from existing walls, a bow window will extend the space giving the feel of more room.
Benefit
Bow windows provide aesthetic appeal and superior functionality.
Vertical Sliding Sash Windows
These windows feature tilting upper and lower sashes for ease of cleaning and ventilation.
Benefit
Key features include (but are not limited to) sculptured Georgian bars, traditional run through sash horns, high quality balances, robust locking devices, travel and tilt restrictors, security bar and low maintenance.



Patio doors offer a panoramic view through large sections of glass. If you want bright, open views with the ability to let light into your rooms, then patio doors could be the ideal solution.
PVC-u Doors
Our PVC-u doors are long lasting and durable with the option to add Police approved "Secured by Design" locking hardware.
Stable doors are also available in this range. They come with an optional Part M compliant low aluminium threshold which is specifically designed to provide easy access for wheelchairs and pushchairs.
French Doors, with double inward or outward movement, provide style and convenience with an attractive slim-line appearance making them perfect for modern and traditional properties.
Flood a room with natural light with French or patio doors to offer a real sense of space; these stylish features are a positive addition to any home.





