uPVC Doors By Greenoaks
uPVC Doors Made-To-Measure & Fitted in the UK
Greenoak Concept & Design and installs Linair uPVC doors across Essex. All of our uPVC front and rear doors are made-to-measure and available in a range of classic colours and door furniture for a fully customisable door that suits your home.
Modern uPVC doors from Greenoaks are high quality and built to be sturdy and secure. With three high performance hinges and multi-point locking incorporating steel hook bolts that engage at the top, middle and bottom of your door.
Bespoke Door Options At Greenoaks
Greenoaks uPVC doors are available in 7 different colours to complement your home, all matched to our uPVC Linair window colours. We produce duo colour doors with a choice of colour outside and white on the inside. Plus, a range of door furniture for the perfect finish.
uPVC front doors are a popular choice with a smooth and naturally weatherproof finish, making it a good all-round material that offers exceptional value. uPVC doors are virtually maintenance-free and will never rot, flake or rust. uPVC is also a naturally insulating material, designed to offer high levels of energy efficiency.
What Makes A uPVC Door Secure
To ensure your uPVC door security is the best it can be, there are a variety of measures that you can consider, such as multi-point locks, BSI standard cylinders, letter box fishing guards and more.
Did you know that 76% of burglars get into a house through the front door? Intruders are bold, experts at breaking locks and work fast. Being aware of your door security can make all the difference in keeping your home secure.
UPVC Doors are a popular choice of door and are considered to have good security features.
However, not all uPVC doors are the same. To ensure your uPVC door security is the best it can be, you must have the right euro cylinder lock and incorporate a few other add-ons that will turn an average uPVC door into a super-secure uPVC door.
Multi-Point Locks
A uPVC door will usually have a multi-point locking system. There are (at least) five points of contact from the door into the frame from top to bottom. This makes it harder to physically kick or ram the door open.
Greenoaks doors have a robust three hook and two roller multi-point system. The door benefits from five points of contact and the hooks and rollers contact in both directions to deter forced entry.
However, the weakest part of a door is the lock and less secure cylinder locks have a vulnerability.
Secure Locking
Most burglars get into the house through the door and 33% do this by forcing the lock. The cylinder or barrel that the key fits can be the weakest part of the locking and this can make the multi-point locking system redundant if the lock can be breached.
Euro-lock cylinders are vulnerable to an attack method known as ‘lock-snapping’. And intruder removes the casing around the lock to reveal the protruding cylinder and then used brute force to break the cylinder in half. A cylinder can be ‘snapped’ in as little as 5-10 seconds.
Lock snapping became such an issue that a few years ago the police raised awareness with a national campaign. They worked with Secured by Design and the BSI to advise on minimum standards for anti-snap cylinders that could replace existing vulnerable cylinders.
A Euro-lock cylinder should be upgraded to a cylinder that meets the following standards.
Frequently Asked
Questions
If you have any questions in relation to our uPVC doors, then look no further. This FAQ section answers some of the most common questions we come across. If what you had in mind is not mentioned here, please don’t hesitate to contact us and we will be happy to answer any question you may have.
You can secure a uPVC door by ensuring that the complete door is Secured by Design or has a lock with SS312 Diamond or TS007 3 Star standard.
You can also add door chain restrictors to the door for additional security.
uPVC doors have multi-point locking that should make them very secure. However, multi-point locks are not effective if you don’t have a cylinder lock that meets standards.
Some euro locks are vulnerable to lock-snapping and can be broken in 5-10 seconds by an intruder.
Yes. You can fit a standard door chain using security-rated screws and rivets, or use a door chain restrictor that bolts into the wall and loops around the handle. Lockable sash jammers can also be added to the top and bottom of the door as an extra bolt.
It’s not usually possible to fit a second cylinder lock, as this would be incompatible with the multi-point system and could invalidate your warranty.
uPVC is a naturally insulating material, so our uPVC doors offer high levels of energy efficiency alongside being virtually maintenance-free, they’ll never rot, flake or rust.
Yes. Greenoak’s Liniar uPVC doors carry Secured by Design accreditation and are backed by our insurance-backed guarantee via Certass and Homepro.
Exceptional from start to finish. From the initial quotation with Dale, to the exceptional installation team. along with regular communication from the team to let us know what was going on with our job, all the way through to completion. The install team were polite and the work was delivered to a very high standard. We are very happy with our conservatory conversion. Allowing is to get so much more from the room. It already feels so much cooler and will be a different room in the winter. Thanks to Dale and the team for your great work. I wouldn’t hesitate to recommend GreenOak and will definitely use them in the future!!!
Hardie Plank Fitted. I cannot recommend this company enough. From the start of the process to the end they have been nothing but professional. Dale explained everything & we have been kept informed throughout the whole process. We are extremely pleased with the outcome & are glad we choose Greenoaks to carry out the work.
Thanks to your engineer for fitting the new window into our office room. we are very pleased with the end result and would recommend your services again
I can’t praise the work carried out on my property. It transformed a very tired and scruffy frontage to a very modern looking property. The work was carried out on time by professionals who were very helpful. When completed all rubbish was removed and the surrounding area swept and cleaned. I have had several compliments from family and neighbours.
I recently had a window looking out into the garden converted into an external door with Greenoak Concept and Design. The customer service I found to be excellent throughout the process and the installation was incredibly professional with a great final product, finished to a high standard. Would happily and already have recommended this company.
I walked in to the showroom in January and was immediately helped by Dale. Information was supported by documents I could take away and peruse and questions answered on subsequent visits. There was no pressure to sign up and I appreciated Dales honesty and business values. The procedure from start to finish was clearly outlined and ran like clockwork. My conservatory roof was replaced to plan and the interaction of the team working together was exceptional. I have already benefited from the changes with this recent heatwave! So much cooler and to have additional space that is usable all year can only be a bonus and add value to my property. Its a technical and involved process, and the guarantees standing behind the completed product are reassuring. I cannot recommend Greenoak and their team highly enough (in fact my neighbours have already signed up on my recommendation!!)
I recently had new windows, a front door, and Hardie Plank cladding installed by Greenoak Concept & Design. From the outset, communication was clear and professional, and the whole process felt well-organised and stress-free. A big shout-out to Ed and Stewart, the team who carried out the work—they were not only skilled and efficient, but also incredibly polite, friendly, and considerate throughout. They took great care to ensure everything was completed to a high standard, and I really appreciated their patience and understanding whenever I had questions or needed time to make decisions. Greenoak weren’t the cheapest quote I received, but I believe the quality of service and workmanship absolutely justified the price—plus, I was given a fair discount for having all the work done together. Highly recommend if you're looking for a reliable company that genuinely cares about doing a great job!
We recently have had a new super lite roof completed on our conservatory after it being a room we couldn’t use as was either too hot or too cold. It is amazing. The difference it has made is unbelievable. The team at Greenoaks were all so efficient, punctual and hardworking. We couldn’t find fault in the service and work carried out and would highly recommend them to anyone.
We approached Greenoaks for their help in fully cladding our bungalow, from the very start Dale eased all of our concerns regarding the project. All of the reviews we had previously read were 5 star, so we were confident we had chosen the best company. Dale and his office team along with Stu and Ed our installers fully matched up to all the outstanding reviews, and we are exceptionally pleased with the finished work. They were professional and knowledgeable throughout the process and we would not hesitate to recommend this company for any home improvement you may have.
We had Greenoak Concept & Design carry out installation of Hardie Plank cladding to the front of our house and the renewal of our front door recently. From the initial visit right through to the completion of the work, Dale and his team were fantastic. They told us exactly what was going to happen, and when. Everything ran as Dale advised. Communication is key work like this and Greenoak were exemplary. As well as Dale, Mark their surveyor and the fitters Ed and Stu all did fantastic jobs. We are so pleased with the finished works. We would definitely recommend.
Really happy with the service from Greenoaks and great value for money. Wonderful communication and the quality of work. They installed three windows and a door to the garage.
Greenoak replaced some old timber cladding for us on the top part of the house and dormer windows with HardiePlank. They didn't try and push us into anything we didn't want, and did a great job. The work is fantastic, and the people were friendly and professional. I'm sure it's possible to find cheaper work if you want cowboys and squeaky plastic cladding, but we'd rather have someone who knows what they are doing.
Highly professional company. Contractors arrived on time, great workmanship, and left the site perfectly clean on leaving. From placing order to completion, amazing - well done !
We had our conservatory roof removed and a tiled roof added. The whole job was done very professionally. All trades persons arrived when they were supposed to and were very clean.Highly recommend this company
Very professional, very high standard of work. Really please from the first meeting to the final sign off of the extension. Would highly recommend.
If any company deserves a 5 star review it’s Greenoaks, from the first visit from Dale, to the installation of our fascias and soffits and the fantastic silicon render job done by Dave, Ray and Harry. Everyone at Greenoaks should be proud of what they do and I highly recommend this company to anyone looking to transform their home.
So pleased with our new front & back doors. Excellent communication throughout the whole process of design, survey and installation. Cannot recommend enough 👍👍
Good original consultation with Dale, general advice without being pushy. Survey efficient and quote broken down and understandable. Very good team from Greenoak, work done as per schedule, clean and tidy. Very considerate when one of us was unwell, kept the noise down. Problem with garage door investigated and rectified very quickly. Really pleased with final result, completely transformed external appearance of house. Thanks to whole team inc Tom Jay Mike Dave Callum Ed and esp Mark and Tegan.
Amazing service from start to finish. Wouldn't go anywhere else, highly recommend to anyone.
Our team are
ready and waiting
to help you...
Greenoak Concept & Design have been raising the standards for more than 14 years.
More about us: We’re an independent Essex-based specialists in high quality UPVC Windows, Doors, Tiled Conservatory Roofing, Wall Cladding, and Fascias, Soffits and Guttering.























