About Advance Windows

Making the Thames Valley Shine since 1979

Who we are

We're a family-run glazing company based in Tilehurst, Reading. Ian Harper leads a small team of experienced fitters who take pride in every job — residential or commercial, big or small.

What we do

Complete window and door solutions. Design, supply, installation. We're one of the most established REHAU installers in the Reading area, and we handle soffits, fascias and guttering too.

How we work

No commission sales. When we quote, you get honest advice — not a pitch designed to close you on the spot. We measure up, talk through your options, give you a clear price, and leave you to decide.

No third-party reliance either. We control the whole process from production to installation, which means better quality and accountability.

Why it matters

A satisfied customer is our best advertisement. A large part of our business comes from referrals and repeat customers. We don't underestimate word of mouth.

Advance Windows team at work

Our Credentials

FENSA Registered

Reg 15655. All our work complies with Building Regulations. You get certification, we handle the paperwork.

REHAU Approved

Premium UPVC systems with guarantees of quality, durability and performance.

Pilkington Glass

High-performance glazing for better energy ratings and lower bills.

10 Year Insurance Backed Guarantee

All double glazed windows and doors. Parts and labour. If something goes wrong, we fix it.

What Our Customers Say

“Both my wife and I would like to say how delighted we are with the finished product which has exceeded our expectations. Your fitters were extremely professional and courteous.”

Mr Callum Oxfordshire

“Please convey our thanks to Ian and his team for their professionalism and helpfulness in working around my staff. I will not hesitate to recommend your firm.”

Milman Road Health Centre Reading

“Should we need any help in the future I will call you straight away and recommend you to anyone I can.”

Mr Brown Goring

Questions? Want a quote?

Get in touch and let's discuss your project.