Double Glazing Hertfordshire | Window Installers | Window Wise
What We Offer
Why Choose Us

20 Years Experience

If you’re looking for a window or door installation company with experience, call Window Wise. We have over 20 years of installing windows and doors in the area.


We offer quality & affordable service. We believe in providing top-notch customer service and work hard to ensure all of our clients are happy.

Fully Guaranteed

We are confident that you will be happy with our window installation services, but if for any reason you are not satisfied, we'll take care of it. All our work is guaranteed!

Window & Door Fitters in Hertfordshire

Home owners

Enhancing the value, character or living interior of a new build, a self-build or an older home begins with bespoke windows. Windows are the eyes of a home — to widen your views, bring in the light, letting you look on life outside. Think of WindowWise as your house’s optician.

Home builders

Giving your clients the house or the home extension to delight them is your priority.

Giving you the means to do it is ours. We have the range of styles, materials, colours and fittings and fixtures to create distinguishing homes for discerning homeowners.

Lifestyle or statement

Windows, entrance doors, conservatories — we design, manufacture and install. Come to our factory and showroom, minutes off the M25. We’ll show you what we can do for you.

For 15 years we have helped:

  • Homeowners
  • Self builders
  • House purchasers
  • House builders
  • Property developer

Start your online free quote today

Get the product you love, and spread the cost


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Why aluminium doors are the wise choice for your home?
23 June, 2022

There are many factors to consider when choosing doors for your home. Among the most important are security, durability, and energy efficiency. Aluminium doors offer all of these benefits and more. If you’re looking for a door that will give you peace of mind and keep your family safe, an aluminium door is the way […]

How To Clean And Maintain Your Timber Doors And Windows
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The level of maintenance that your timber doors and windows will require will depend on the types of treatment and protection applied at the factory, as well as the specific timber type. It is best to contact your supplier if you are unsure of how best to maintain your timber windows and doors. They will […]

What Are Composite Windows?
24 January, 2022

With the ever-developing housing market for better aesthetics, energy efficiency and increased thermal performance and Governments commitment for the UK to reach net-zero carbon emissions by 2050. A new breed of double glazed window and door product is emerging in the architectural glazing industry. Commonly referred to as composite windows and doors, these products offer […]

What our customers say
Window Wise Trade
Based on 16 reviews
powered by Google
Gareth MilesGareth Miles
18:24 22 Jul 21
Very nice office lady who even helped us load our van!!
12:50 16 Jun 21
Ray and his team did a Excellent job in replacing our Windows.Would highly recommend this company for the quality of their Windows and there Workmanship was First Class .Thanks Charles&David
Steven HawkinsSteven Hawkins
16:22 14 Apr 21
I only know them by delivering there. They are all always friendly and helpful
Emlyn ParryEmlyn Parry
13:56 28 Jan 21
Excellent service from them after I was left with the embarrassing situation of having lost our window lock keys.They also fitted new windows for us; very clean, courteous and polite tradesman.Overall our vote is excellent.
High-quality products with a reliable service

We are the members of CERTASS Trade Association and hold a number of other quality accreditations.