Composite Doors
Although Liniar doesn't manufacture composite door slabs (panels), composite doors can be supplied with a Liniar 70mm uPVC frame - ask your Liniar supplier for the choices available.
A stunning entrance
A
perfect frame
Liniar composite doors are manufactured by specialist nationwide fabricators, which means they have access to a huge range of door slabs from different specialist composite door companies – all surrounded by a PVCu frame made from Liniar’s
superb insulation
You have a world of choices when it comes to colour, style, glazing, security and optional extras - and the frames themselves contain all of Liniar’s design features for a superb seal and thermal performance.
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Use our comparison tool to compare up to three product types. You can compare products by clicking this button to add them to your comparison basket. When you are ready to compare, click the ‘Compare’ button in the toolbar and you will be shown your selected products one screen.Inherently thermally efficient, Liniar composite door frames work to keep homes and businesses more comfortable through the colder months. Due to their exceptional design, when combined with an energy efficient composite door, the frames can achieve A+ standards.
70mm Composite Door FAQs
What's the difference between a composite door and a uPVC residential door?
The main difference is in the door slab itself - the opening part. A composite slab is made of a number of different materials compressed together under high pressure, giving it high insulation properties. Due to the processes involved in their manufacture, composite doors tend to have a higher price point than uPVC doors, but offer a superior level of durability, security, and aesthetic appeal.
With uPVC residential doors, both the frame and the slab are made from uPVC. With Liniar profiles, this means the multi-chambered nature of the profiles offers a highly energy efficient alternative to a composite door at a lower price. uPVC residential doors can be foiled to look like timber or aluminium and glazed panels can be added for a traditional or contemporary design. It can be difficult to spot the difference between a composite door and a uPVC door with a foiled finish.
Is a composite door more energy efficient than a uPVC door?
Not necessarily - this depends on the type and style of door in both cases. Although composite doors are often promoted as more energy efficient, a Liniar 70mm uPVC residential door can achieve a U-value as low as 0.99 with triple glazed panels, with similar styles of composite door coming in at around 1.6. The individual U-value rating is determined by the span of glass included, whether it is double or triple glazed, the materials used in the door frame and slab and other factors, so ensure you check with your Liniar supplier to get the right rating for your home.
What materials make up a composite door slab (sometimes called a 'panel' too)?
Each composite door slab is made of different materials that are compressed together under high pressure. These materials can include uPVC, wood, insulating foam and glass reinforced plastic (GRP), resulting in a strong and secure front door.
Does Liniar make composite doors?
No. Liniar designs and manufactures the lengths of multi-chambered uPVC profile that make up the frame around a composite door, including its threshold. Specialist independent fabricators cut and weld these lengths into bespoke sizes for your door and add the opening door slab which they have sourced from a separate composite door brand. Once hinges, handles, glass and other accessories such as a letter box are added, the finished door can be fitted into your home.
What threshold options are available for Liniar composite door?
Liniar composite doors offer a range of diverse threshold options , including a Part M-compliant low threshold (with a 48mm slab) - scroll up to find out the details of every threshold option available.
Liniar designs and tests products, extrudes the PVCu profiles and delivers them to independent specialist manufacturers and resellers all over the UK. You can find your nearest with a simple postcode search.
It’s easy to get in touch with Liniar. Fill in a quick form and your enquiry will be directed to the correct department. Note our office hours are Monday-Friday, 8:30am to 5pm and we endeavour to respond within 24 hours.
Product information
- Liniar suppliers offer a wide variety of composite doors in all styles and colours
- 70mm composite doors are highly secure, with specific door slabs capable of PAS24 accreditation
- Up to six times the insulation of a timber door
- Choosing a composite door from a Liniar supplier means a perfect match for your windows
- Choose standard or EnergyPlus 70mm profiles, with sculptured or chamfered detailing
- Up to 8 different threshold options (48mm slab), including a Part M compliant low threshold
- 44mm door slab can achieve Fire Door rating of FD30 - ideal for commercial use (check supplier availability)
- The uPVC frame includes Liniar design features and is compatible with other Liniar products
- Side screens and top lights can be added for a stunning appearance
- Optional extras include letter boxes and a wide choice of handles and hardware
BS EN 12608
BS EN 6375
ISO 9001