Conservatories

Grantham’s Centre For Quality Conservatories

Professional, Friendly Service – Every Time

At our site in Grantham, we offer a range of conservatories to suit every taste. A conservatory adds light and space and our low-maintenance UPVC designs are backed by our guarantee. We offer a full 10-year guarantee on everything we sell. Choose from a classic Edwardian, Victorian, or lean-to design. We provide a total package of design, build and installation to your specification, budget and timeframe.

We also provide a range of sky lanterns, or skylights, available in a choice of artisan colours and supplied with either polycarbonate, low e-toughened, self-cleaning clear, or self-cleaning blue tint glass. We take pride in getting a beautiful job done right the first time around.

Fast

The team at Avanti Windows understands the value of installing conservatories. You can rely on our Grantham team to install your new conservatory in the quickest time possible, with the maximum respect for your home.

Helpful & Resourceful

At Avanti Windows, our team in Grantham enjoys their work and ensures our customers are happy with their new conservatories or glass work.

We can also take care of all necessary building regulations for the installation of your new conservatory with your local authority in your area.

Guttering and Roofing Options

A range of finishing options are available including:

Variety of roof finishes including glass and polycarbonate.
Artisan colour options.
Fully glazed designs with glass from floor to roofline or combinations with various dwarf wall heights
Decorative glass options for fanlights or sides
Electrics and plumbing available
Exterior building work including pathways and drainage solutions

For a FREE Quote!

Call: 01476 579058

Evie English

Tony and the team were very professional throughout the whole process. The fitters had to install all new windows and doors and have completed to a high standard. They have been very accommodating with my timescales and would highly recommend. Thank you!

Debbie Norton

A big thank you to Richard Tony and the team. Amazing service thoughout totally transformed our home! From the giles-norton family

Draylynn

Our landlord got our old/rotten windows replaced by Avanti (Due to COVID there was a long wait for em). Friendly bunch, such a good job, clean seal work, no drafts, fitted well, cleaned up after themselves (indoor and out). Absolute 'massive' difference it's made in temperature and noise. Smashin' job, thanks Gaz and co'.

Dawn Mantle

Unfortunateley we had a bit of a wait to get our conservatory roof replaced due to the Covid 19 Pandemic. But Avanti have now managed to come and get the job done. The team were brilliant on the day, courteous, professional and worked safely within the Pandemic guidelines. My husband and I are delighted with the end result, it looks amazing. Thank You Avanti. Highly reccommended!

Amanda Godber

Helpful professional service, done with an open and friendly approach and fair prices.

Robert Edwards

Very high quality doors, no nonsense quote provided, no pushy sales process. Excellent fitting service by professional team, I would highly recommend this company to anyone.

John Sheppard

Fantastic company. Conscientious fitters, work completed to a high standard and the service from start to finish was excellent. Will be recommending to friends and family.