Castle Windows install high quality Elitis patio doors in homes across Newbury, Reading, Basingstoke & Berkshire. Read more about this product below or start a sliding door quote online today.
Elitis patio doors are the perfect way to bring natural light into your home while providing a stunning connection to your garden or outdoor space. Designed with smooth sliding mechanisms and energy-efficient materials, these doors are ideal for homeowners looking to combine style, performance, and convenience. Whether you’re renovating or upgrading your home, Elitis patio doors are a versatile choice for modern living.

Double Glazing
Low Thresholds
Modern Hardware







We have our patio doors manufactured to order. In doing this, it ensures a tailored build for you as the homeowner. You’ll be getting a set of sliding doors that can unify with the rest of your Berkshire home, whether you live in something traditional or contemporary.
Our patio doors are available in an array of different colour finishes. We have woodgrains, subtle whites and even brighter reds and greens. Couple this with our authentic handles and accessories, and you can create the perfect sliding doors for your home.
Feeling safe within your home is a must. With this, we ensure that our patio doors deliver a level of home security that is on par with all of our other uPVC back door options. You won’t be making a compromise by investing in sliding doors.
We fit multipoint locking systems as standard. They minimise the number of weak spots that the patio door has, making it much harder for an unwanted intruder to break in. You also have the option to include steel reinforcement, enhancing the durability and robustness of the uPVC profile.
Our patio doors achieve excellently low U-values. This means they are retaining a superb amount of heat while letting as little cold air as possible pass into your home from outside. With this, they are fantastically energy efficient during winter.
The wide glass panels will be fitted with double glazing as standard. It works by keeping a pocket of vacuumed air between your home and the chilly outdoors. The uPVC framework that we use is internally chambered, which works to prevent your home’s natural warmth from escaping.

Reliable Patio Door Installations
You can place your complete trust in Castle Windows. We have over three decades of industry experience and are supported by FENSA, Checkatrade and Master Builder.
We know how to complete a professional and efficient fitting of a set of patio doors, implementing a process that is stress and hassle free for you as the homeowner. We take a duty of care to ensure your home or conservatory is left in the perfect condition. Our team of installers are always polite and courteous.