Let us help you turn your home into a thermal efficient haven, cheaper to run and lovely to look at. 

Get the home improvements you’ve been dreaming of with the help of your friendly local company 

We cover the whole of Lincolnshire

Are you finding your conservatory too hot in the summer and too cold in the winter?  Would you like to consider insulating your conservatory roof so that you can use it 365 days of the year?  A thermal efficient insulated ceiling or a solid tiled roof will make all the difference and you will release the space your conservatory can give and extend your home without lifting a brick!  

Maybe your existing conservatory is a little dated and you fancy sprucing it up or renewing it completely.  It can become a much used and inviting living space expanding your home in an instant.  

Do you want to extend your living space, but don’t fancy the prospect of the lengthy planning process and building an extension with all the mess and cost that that entails?  Talk to us about our 21st century conservatories – completely useable living spaces to be enjoyed all year round that are also energy price rise friendly with their insulated roofs and A-rated windows and doors.   

Do you want to achieve maximum thermal efficiency with new A-rated double or triple-glazed windows and doors in your home or your conservatory?  A good idea now with the price rises on our energy bills.  

Do you fancy a smart, energy efficient, super safe composite front door that offers a warm welcome to visitors?  You might simply have some misted up window units that need replacing.     

Whatever your home improvement requirement, pop in to see us in our showroom in Horncastle, or give us a call and we can arrange to visit you.  Totally non-pressurised with no obligation we will just give you good, sound advice and quote you a sensible price for an exceptional quality product. 

Why ThermoGreen?

You want to use your conservatory ALL YEAR ROUND

You want to create new living space in your home with a 21st centrury conservatory

Your conservatory is looking tired and has some problems

You fancy a modern, security conscious new front door

You are thinking about replacing your windows

You have misted up windows and need the units replacing

You have some home improvements to do and don't know who to ask

You want to use a family-run, friendly local company with bags of experience

You want to be treated with respect and professionalism throughout

You value honest advice

Peace of Mind

ThermoGreen, a local family run business, have been in the Home Improvement industry for over 40 years. We are proud members of the Guild of Master Craftsmen, are CERTASS registered and have full public liability insurance. We offer Installsure insurance backed guarantees along with our own company guarantees and all our work is carried out in a professional, caring manner with an appreciation that we are working in your home. 

All estimates are provided free of charge with no obligation and no post contact.  

No pressurised selling

Here at ThermoGreen we don’t believe in pressurised selling. From the moment you contact us we are friendly, knowledgable and helpful. If you would like us to visit you at home, we will simply turn up at an agreed day and time, chat to you about the product you are interested in, answer any questions you may have, take approximate measurements where necessary and then either give you the price there and then or tell you that we will put your quotation on email or in the post within the next couple of days.

It is entirely up to you when, or if, you come back to us. There is absolutely no hard sell.

We have a lovely showroom open at Wharf Road, Horncastle, Lincs, LN9 5HL where a warm welcome awaits.  Pop in for a chat and have a look at our windows, doors, conservatories and insulated conservatory roof options and see for yourself the quality of the products we offer.  

Our Products

ThermoSave Insulated Conservatory Ceiling
equinox® Insulated Conservatory Roof
Thermal Insulated Infill Panels
Conservatory Upgrade
Windows & Doors
Roofline & Cladding

Our Google reviews


  • Avatar Anthony Fell ★★★★★ a month ago
    Great team, friendly, hardworking. All completely within time frame. Work finished to a high standard. All ready feeling the benefit with this warm weather. Conservatory much more usable and cosy. Thoroughly recommend ThermoGreen. … More
  • Avatar Paul Irving ★★★★★ 4 months ago
    Just had all windows fitted by thermogreen, what an excellent company, from start to finish very professional, excellent product the fitters were very courteous, tidy but above all superb job, cannot fault the company or … More the installation and would highly recommend. One very satisfied customer, thankyou.
  • Avatar Anne Austin ★★★★★ 7 months ago
    We had our conservatory roof upgraded by Thermogreen a couple of years ago. Best thing we ever did. It's currently -2 and we are relaxing in the conservatory. It's cool on hot summer days too. There was no pushy … More salesman. The fitter was efficient and friendly. The price was extremely reasonable. No regrets whatsoever, except that we should have done this years ago.
  • Avatar barry walters ★★★★★ 8 months ago
    Thermogreen are a top class company. We had all of our conservatory cladded for heat insulation today and it was a seamless experience. From the initial quotation to the polite and happy ladies in the office and the guys … More installing it today it was a worry free journey. We have had some real shocking workmen over time but these guys are at the top of their game. Highly highly recommended thanks Thermogreen
  • Avatar kim dear ★★★★★ 10 months ago
    Whole experience from start to finish was very professional. Was told it would take 9 days and it took 9 days. All of the staff were very polite and tidy. Very pleased with my new conservatory roof. Would highly recommend. … More
  • Avatar linda mellows ★★★★★ a year ago
    Very happy with our windows/doors. Salesman was very helpful but not 'pushy'. Window fitters were punctual, polite, very tidy and respectful of our property. End result was great. Thanks 🙂 we would def recommend … More this company 🙂