Rehau Casement Windows
Home Improvements

Areas We Cover

Best Glaze is a local company based in St Columb, Cornwall. We supply & install quality windows & doors, conservatories throughout the whole of Cornwall & Devon.

  • Family Run Business
  • 20 Years Experience
  • Fensa Registered
  • Insurance Backed
Bestglaze dark logo
Best Glaze conservatories Cornwall Plymouth

Window & Door Conservatory Installers In Cornwall

Best Glaze LTD cover the whole of Cornwall, supplying and installing uPVC windows, doors and Conservatories, replacement conservatory roofs, orangeries, and modular extensions.

As a family-run business, we strive to achieve 100% customer satisfaction with every installation no matter how big or small. We have built up a reputation for outstanding attention to detail and amazing service in the areas we cover.

Areas we cover

Anthracite Windows, Doors and Conservatories Cornwall



  • Redruth
  • Helston



Local companies in cornwall

Local family run business in Cornwall

When we put our name to something, we like to ensure that it the best quality product that has been installed to the very highest standards. Our work is our advert which is why we strive to achieve no less than 100% customer satisfaction with every installation in the areas we cover in Cornwall.

We will only supply and install the very best home improvement products such as Residence Collection Windows, Ultraframe replacement conservatory roofs, and Durabase modular base systems. We only use the best sealants, fixings, and trims, when you choose Best Glaze for your installations you are choosing the very best quality.

Total Peace Of Mind

Federation of Master Builders logo

Master Builders

When we take on a home improvement project in the areas we cover, we want our customers to have total peace of mind that they have chosen a company that they can rely on, that is why we are Federation of Master Builder vetted. We follow a strict code of conduct to remain part of the Federation of Master Builders (FMB), this gives our customers absolute confidence that they are in good hands.

trustmark trading standards approved

TrustMark Endorsed

Our TrustMark Government endorsement also lets our customers know that they are choosing a legitimate company that carries out work to the highest standards. TrustMark is the only Government Endorsed Quality Scheme that covers any works that a consumer chooses has carried out in or around their home by one of their members. Best Glaze is a TrustMark Registered Business, which means we have been thoroughly vetted to meet the required standards, we are also committed to outstanding customer service.

fensa registered installers

FENSA Installers

Best Glaze are FENSA registered, FENSA is a government-authorised scheme that regurarly assesses its members to make sure they adhere to building regulation compliance when replacing windows and doors.The certificate is proof that your installation complies with Building Regulations, is registered with the local council and is backed by guarantee insurance for peace of mind.

Frequently asked questions:

Do you cover areas not listed on this page?

We cover the whole of Cornwall and most of Devon, if you can’t see your actual town listed, dont worry, chances are we cover that area, but to be sure just give us a call or use the contact us page.

Do you provide all services in the areas you cover or are they limited?

We supply and install windows, doors, conservatories, replacement conservatory roofs, and cladding throughout all of the areas we cover. If in any doubt please get in touch.

Do you cover the whole of Cornwall?

We do cover the whole of Cornwall, we supply and install uPVC windows, doors, and Conservatories in every town in Cornwall.

Can I put a replacement conservatory roof on my old conservatory?

We would need to inspect the existing conservatory to make sure that the frames are reinforced and that the base and footings are adequate to take the extra weight of a replacement conservatory roof, but it’s usually fine in the majority of cases. We take the old roof off completely and install one of our replacement conservatory roofs.

How long is the warrenty on a Durabase base and walls?

The Durabase base and walls system comes with a manufacturers 25 year guarantee.

Can I put tiles on my existing conservatory roof?

The short answer to this is no! Under no circumstances should you put anything on a conservatory roof other than a like for like replacement. When conservatory roofs are engineered, they are made to be lightweight constructions with a weather loading tolerance, even adding insulation to an existing conservatory roof is dangerous and could result in serious injury or worse.