
Our uPVC casement windows are manufactured using Liniar Energy Plus profiles, delivering slim, modern sightlines alongside excellent thermal efficiency. Fully lead-free, these profiles provide a safe, sustainable solution for residential properties.
We understand that every project comes with its own requirements. That’s why Knockout Joine
Our uPVC casement windows are manufactured using Liniar Energy Plus profiles, delivering slim, modern sightlines alongside excellent thermal efficiency. Fully lead-free, these profiles provide a safe, sustainable solution for residential properties.
We understand that every project comes with its own requirements. That’s why Knockout Joinery offers a wide choice of colour finishes, as well as multiple lock, handle, and hinge options—allowing each uPVC casement window to be customised to your exact specifications

The Liniar Resurgence uPVC flush sash window combines traditional styling with modern performance and is available in a selection of our most popular stock colours.
For customers looking to make a statement, we also offer bespoke options, including colour spraying and specialist foil finishes, giving you even greater design flexibility.
Our
The Liniar Resurgence uPVC flush sash window combines traditional styling with modern performance and is available in a selection of our most popular stock colours.
For customers looking to make a statement, we also offer bespoke options, including colour spraying and specialist foil finishes, giving you even greater design flexibility.
Our flush sash windows are engineered with mechanically jointed outer frames and precision-welded sashes. A double-rebated seal eliminates the need for visible gaskets, ensuring a clean, authentic appearance. For a refined finish, a vented head drip can be specified, providing discreet ventilation while removing the need for an external trickle vent.

Knockout Joinery offers a comprehensive range of uPVC door solutions to suit a wide variety of customer needs. From French and stable doors to residential front and rear doors, there’s an option for every style of property. The Liniar door range also includes sculptured profiles in striking foiled finishes such as red, blue, and green—pro
Knockout Joinery offers a comprehensive range of uPVC door solutions to suit a wide variety of customer needs. From French and stable doors to residential front and rear doors, there’s an option for every style of property. The Liniar door range also includes sculptured profiles in striking foiled finishes such as red, blue, and green—providing a stylish alternative to composite doors.
We design our PVCu doors with installers in mind. A broad selection of hinge options and pre-supplied bridging packers help make fitting and glazing straightforward, saving time on site and ensuring a smooth installation process.

The Liniar ModLok™ uPVC patio door, supplied by Knockout Joinery, is an ideal choice for customers seeking enhanced security without sacrificing style.
Designed with protection at its core, the ModLok™ patio door features four bi-directional locking clusters and eight mushroom-head locking points, all contained within a robust aluminium b
The Liniar ModLok™ uPVC patio door, supplied by Knockout Joinery, is an ideal choice for customers seeking enhanced security without sacrificing style.
Designed with protection at its core, the ModLok™ patio door features four bi-directional locking clusters and eight mushroom-head locking points, all contained within a robust aluminium box section. Clean, slim sightlines and concealed crash stops give the door a refined appearance, while a heavy-duty rolling system ensures exceptionally smooth and reliable operation.

Enhance the appearance of your home with a striking new Composite front door from Knockout Joinery. Choose from a wide selection of designs, from traditional solid styles to sleek, contemporary glazed options.
With a door to suit every type of property, each design can be fully personalised with your choice of colour, decorative glazing, a
Enhance the appearance of your home with a striking new Composite front door from Knockout Joinery. Choose from a wide selection of designs, from traditional solid styles to sleek, contemporary glazed options.
With a door to suit every type of property, each design can be fully personalised with your choice of colour, decorative glazing, and hardware—allowing you to create an entrance that’s truly your own.

Knockout Joinery offers a stylish and cost-effective uPVC bifold door solution, providing a high-quality alternative to aluminium bifold systems without compromising on performance or appearance.
The Liniar ModLok uPVC bifold door features ultra-slim frame profiles, allowing for larger glazed areas and a brighter, more open feel. A range
Knockout Joinery offers a stylish and cost-effective uPVC bifold door solution, providing a high-quality alternative to aluminium bifold systems without compromising on performance or appearance.
The Liniar ModLok uPVC bifold door features ultra-slim frame profiles, allowing for larger glazed areas and a brighter, more open feel. A range of intelligent design features are built in to enhance both usability and aesthetics.
A uniquely designed sprung D-handle makes operation effortless, enabling the panels to fold back neatly and smoothly. The system runs on a robust four-roller aluminium track, delivering a light, controlled glide every time.
Combining excellent thermal efficiency with strength, security, and long-term durability, our uPVC bifold doors are the perfect complement to Knockout Joinery’s uPVC window range—giving you a complete, cohesive offering for your customers.
Composite Door Brochure (pdf)
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