Conservatory Conversions

In County Durham

Guardian warm roof installation

Conservatory Conversions

In County Durham


We are a small yet professional business located in Trimdon Village within County Durham, North East England. With over 25 years experience behind us and a good track record of happy customers, ATC Plastics should be your first choice for quality Windows, Doors, Conservatories and Roofline products. Our customer’s satisfaction is our main marketing strategy and your assurance. We know if our customers are happy we will win more repeat business and increase business through recommendation.

When you couple the high quality of our products, our desire to keep our customers happy and the competitive prices we offer, ATC Plastics stands head and shoulders above our competitors. Contact ATC Plastics today and benefit from our free expert advice before spending your hard earned money. From experience we may well be able to provide a more cost effective or superior solution that best suits your needs.

Installation of the month

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Conservatory Conversion on a warm sunny day

Conservatory Conversion

White full length wpvc window doors on extension

Window & Door Installations

Conservatory conversion using Guardian Warm Roof

Warm Roof

GUARDIAN WARM ROOF - Improve your living space!

At ATC Plastics we only fit quality products. We use Halo systems to guarantee a great installation that will last.


As we are so passionate about absolute quality for our customers, only the very best materials and components are used to create our products. An example is the PVCu supplied by Halo, which meets the highest quality standards. PVCu has recently achieved a Green Guide “A” Rating, which we believe reinforces this particular materials place in sustainable reconstruction. If you are looking for high quality, stylish, energy saving, and maintenance free windows, conservatories, and doors, you won’t find better choice or value. Our windows, doors and conservatories are guaranteed to make your home warmer, minimize outside noise due to the insulated frames, weather tight seals, quality double glazing and multi chambered profiles, all of which ensure heat loss is minimized.

In the unlikely event that a product fails, ATC Plastics will visit your property and after inspection if it is considered to be a failure due to the product or fitting we will arrange to put right or replace the product or part of that product. Terms and conditions apply.

Composite-Doors Price graphic

Customer in Stockton-on-Tees

Windows and composite door fitted

“Absolutely thrilled with the work done I was a lift unsure using a company not really heard of before but no worries they are fab and an excellent price will certainly recommend this company and would definitely use again. Thanks lads xxx”

Customer in Durham

New front door

“The guys arrived at the exact agreed time, they were polite and professional. The work was carried out to an exceptionally high standard and the quality of the door is excellent. I wouldn’t hesitate in recommending this company. Well done guys and thank you.”

Customer in Trimdon Station

Windows with door and canopy

“Top notch workmanship. Superb finish and they even hoovered through the house. The suggestion of a canopy in one piece between window and front door is superb. All great blokes who know the meaning of a promise i.e. To provide the service they are payed for! I would 100% endorse their work and will be using them again in the future. Thanks for a superb job at the agreed price. We defiantly got what we payed for more in my opinion. They even took away extra rubbish and carried out a few repairs for free.”

Customer in Ferryhill

New windows and door

“Work carried out to a high standard, very quick and efficient. Always kept in contact to let me know when the windows would be getting fitted. Excellent set of lads. Will be getting them back for some more work very soon.”

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