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.
You can fit a standard door chain to a uPVC door if you use the right security rated screws and rivets.
The other option is to use a door chain restrictor that bolts into the wall at the side of the door frame and loops around the uPVC door handle.
If your cylinder lock on a uPVC door is anti-snap and approved by Secured by Design or meets the ratings of SS312 Diamond or TS007 3 star then your door should be secure.
It’s not usually possible to add another cylinder lock in the door as it wouldn’t be compatible with the multi-point locking system. Making changes to the door might invalidate any warranty or guarantee for the door.
As an extra measure, you can also add lockable sash jammers to the top and bottom of the door that acts like an additional bolt across the back of the uPVC door.
Greenoaks Liniar uPVC doors have Secured by Design accreditation and offer the best security for an entrance door. Review our selection of doors and talk to us about a made-to-measure doorset for your home.


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.

This my second time using Greenoaks Conecept and design , I cannot vouch for them enough ! Dale and the team completed a very a high standard of work throughout on a few properties for me and would highly recommend to anyone looking .

Highly recommend this company. Had our conservatory roof done and they did a fantastic job. They kept us informed every step of the way of what would be happening. Cleaned up at the end of each day and was very hardworking, polite and friendly.

Dale has been a star. From his first visit to give me a price, to completion of the works. Punctuality and communication of the Greenoak team (Dave/Ray/Callum) was excellent.I am so pleased with the job that Green Oak have completed for me. They were professional, tidy and worked so hard. The job is finished to a high standard and I will 100% use them again. Would highly recommend.

Job was done in the hours I was told. Very efficient and happy with my new conservatory roof. Thank you and would happily recommend Greenoak

We recently had relacement windows and doors by Greenoak Concept. Many thanks to Dale and all the team,they are very professional, punctual, polite and leave the job in a clean and tidy condition. Very pleased with the outcome, many thanks to all at Greenoak.

Dale and the Greenoak team are fantastic; having delivered 2 large projects on our house, both on-time and on-budget (and with a laugh & smile!) we can’t recommend them enough! Thank you!

So far very happy with the installation . Our tired old conservatory has been totally transformed by the team at Greenoaks. They worked cleanly and efficiently whilst navigating our day today running if the house. We’re actually looking forward to the heat of summer and cold of winter!!

Dale, you and your team, thank you so much for your time and dedication. Our new composite Rock door looks and feels fantastic. It feels really good using a local company that cares about their customer from start to finish. Thank you

We have had a solid roof put on our conservatory by Green Oak. We were very impressed from the outset. Dale took time to explain every aspect of the build bringing a model of the roof so we could see the construction. Then he left us think about it and there was no hard sell. The workmen were very pleasant, friendly and worked extremely hard. Despite being one man down the other chap worked late into the evening to make sure the construction was finished on time ( rather than have to come back for a couple of hours the following day), as did the man doing the plaster boarding. Every evening the site was left tidy and all rubbish taken away once the work was finished. The plasterer and electrician also did a brilliant job and all works was finished on time. We are really happy with the end result and couldn’t recommend the firm more highly. John & Rita Dobinson

Dale was very professional in giving us sound advice and explained the whole process from start to finish. The job commenced on time, Mike and Mark treated our home with respect and were very knowledgeable and kept us informed all the way along. The quality of work is excellent and we would recommend them.

We needed 11 new windows of various sizes so we spent some time searching reviews for a highly rated but local Double Glazing window installer. Greenoak came out top of our search results, We reached out and Dale responded quickly followed by a visit a few days after. The resultant quote was very competitive versus other quotes we had received. It was an easy decision to go with Greenoak. Dale came across as very knowledgeable, friendly and genuinely customer focussed. He invited us to the showroom in Leigh where he took us through the detail to ensure we were fully aligned on requirements and expectations. We were very impressed with him and his business and by his overall professionalism. The installation took place on 20th Feb 2023 and took 4 days in total. The whole process was exemplary, we could not fault the team in any way. They were tidy, considerate and very thorough. We have had windows fitted before by various other company's but the quality of fit and finish from the Greenoak fitters was far superior. The guys worked solidly and clearly did not skimp on anything, ensuring that the windows were not only properly fitted but sealed professionally too. They did an outstanding job including clearing all of the old windows and rubbish Overall we'd rate Greenoak at 10/10. We felt reassured by their high standards of work ethics, integrity and customer satisfaction. We honestly doubt there is anyone better out there for this type of work. We therefore wholeheartedly recommend them Ian and Jenny

Fantastic job done by Greenoak, the guys were professional, friendly and a pleasure to have in my home. I couldn’t be happier with the job they did. Highly recommended.

Brilliant company, very friendly and easy to work with. Very pleased with the finished cladding on our office wall - excellent quality and good value

Replacement Conservatory Roof. Fantastic company and service from the whole team! Dale is great and gave me a quote for my new lightweight roof, great bloke and not pushy, loved the fact he gave a all in price rather than start low and add extras. The fitting team are fantastic!, Mike, Mark and Casper treated my home like their own, , great attention to detail and did everything I asked to get the perfect finish, I honestly cant find 1 fault and I am fussy! I could not be more happier with my roof!! Take my advice, Don't look anywhere else ,I cant rate them highly enough. Greenoak are the BEST!

Following our initial discussions with Dale, our expectations were already set high when it came around to installation. Some truly awful weather right at the start of the installation virtually wiped out the first two days work, and the anticipated seven day build seemed to be in jeopardy right from the start. But Mike and his crew - supplemented by two and sometimes three others, working in still inclement weather, brought the build back on schedule by the end of day five, and the plastering and electrical second fix over days six and seven meant the whole project was delivered to time, and budget meaning that our initial high expectations had even been exceeded. I have nothing but the highest regard for their workmanship and scheduling - and not forgetting Dione in the office who kept me informed throughout and efficiently managed the stage payments. In my experience it is unusual to receive a great sales pitch and then to have that exceeded by the installation teams - I couldn't recommend Greenoak's services more highly.
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.