The colours you choose for your doors can make a big difference to the impact of your project. All products also have the option of dual colour where one colour is chosen for the outside and one for the inside.
Lift & slide doors
Our lift and slide doors are an excellent solution for large openings. Typically designed to have 2 sections with one sliding and one fixed. Our sliding section is to the inside which has multiple benefits. It means the door can slide fully behind the fixed unit as the handle is not in the way, this creates a great aesthetic when fully opened. This also means that the track in which the door slides is on the inside, so is not exposed to the weather and possible build up of dirt and debris which can affect the seals and functionality of a sliding door. Despite the hefty weight of a sliding door it can be easily slid with very little force due to the lift and slide system, please see one of our videos or try it for yourself in one of our showrooms.
Suited to
Low and ultra-low energy projects
U value
from 0.73 W/m2K
Discover our triple-glazed windows, available to make unique to you.
We offer a range of glazing options to give you the flexibility you need.
From obscure to transparent, we can offer plenty of choice for window and door glazing. Make your project unique with our various glazing options and glass finishes.
FAQs
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Approved Document Q of the Building Regulations for England became mandatory for all new dwellings on 1 October 2016. This means that windows and doors in new dwellings, where Part Q is applicable, will need to be security tested to PAS 24, or equivalent standard.
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Either a window or doorway, any part of which is within 2m vertically of an accessible level surface such as the ground or basement level, or an access balcony, or a window within 2m vertically of a flat or sloping roof (with a pitch of less than 30°) that is within 3.5m of ground level.
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21 Degrees windows & doors are all made from timber. Our ranges are made from FSC® certified Redwood. Modern timber finishes are now so durable that, for most applications, we recommend them over aluminium cladding or UPVC.
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U-Values measure how well heat is transferred by the entire window/ door – the frame, sash and glass – either into or out of the building. The lower the U-Value number, the better the window or door will keep heat inside a building on a cold day.
Download our lift & slide doors technical information
Download our technical drawings and UKCA declarations regarding our lift & slide doors.
Download now
Lift & slide doors
Take a look at our lift & slide doors for low energy & Passivhaus projects. With low U values and aluminium-clad doors available too, these doors can really enhance the style and design of your project with standard and contemporary designs.
Low U values
Argon-filled triple glazing as standard for comfort and great thermal performance
High security
Multipoint locking tested to Secure by Design standard
Be inspired
See our lift& slide doors for our clients within our case studies.
Certified and quality tested
All of our products are thoroughly tested and quality assured.
FSC Certified Wood
Secured by design
How can we help?
Visit the showrooms
Windows are a big investment, so come and visit our showrooms in Huddersfield and Swindon or catch us at exhibitions around the UK to see our products for yourself.
