Ada Windows Ltd are North London’s fastest growing company in the field of new double glazing uPVC and aluminium windows, doors, bifold and conservatories. As manufacturers and FENSA approved installers providing a 10 year guarantee, we take pride in carrying out the replacement of your windows and doors. Our aim is to  deliver installation projects above and beyond the regulation standards. We cover most parts of London, however also operate in Hertfordshire, Essex and Kent.

Production success throughout 2018


Windows Manufactured


Bifold doors installed


Conservatories installed

Benefits of using Ada Windows Ltd

Energy efficient windows

Energy efficient

Multi-chambered and reinforced windows and doors can maximise heat retention and minimise heat loss

Quality WIndows

Quality Products

Regular inspections mean that our installations guarantee at least the minimum industry requirement

Price match guarantee

Price match

If you find the same product cheaper elsewhere we’ll price-match.

interest free finance

Interest free finance

Straight-forward interest-free finance available for upto 10 months.

Sound reduction acoustic glazing

Acoustic glazing

Enhance the sound performance of your windows with certificated acoustic glazing options.

expert professional window fitters

Expert installers

Fitters undergo regular in-house training while also being overlooked by FENSA to ensure installations meet industry standards.

environment friendly recycled windows

Environmental friendly

We use recycled material to manufacture our PVCu Windows and doors. In addition, we recycle any offcuts so they can be used again.

multipoint lock mechanism

Multi point locking

Windows and doors that come with locking mechanism that features multipoint locking system for security and therefore peace of mind.

48 hour window door production

Quick lead time

Control is in our hands. As a result priority fabrication options are available for your urgent requirements.

10 year guarantee

10 Year guarantee

You get 10 year guarantee on windows, doors and conservatories when you order from us.

internal beading

Internal glazing

As standard, our windows and doors are Internal beading to prevent removal to make difficult unwanted entry, hence a secure home to live in.

refer a friend

Referral voucher

If you refer a relative or friend we’ll provide you with a “thank you” gift.

Fensa homepro fairtrades Trustmark CE