Window Fitter

Job Description:

Window fitters install windows, conservatories and glazed curtain walls in homes and businesses.

Job Category:
Engineering & Construction

What you will do:

In this job, you would:

  • measure up where new glazed units will go
  • remove old windows, doors and panels, using hand and power tools
  • fix new windows, doors and glazed panels into place
  • readjust surrounding timber or brickwork to make sure fittings are secure
  • seal fitted units to make them weatherproof
  • add trims or special finishes
  • clear away leftover building materials
  • issue a work completion certificate to the property owner


You’ll need:

  • knowledge of building and construction
  • knowledge of maths
  • the ability to operate and control equipment
  • to be able to carry out basic tasks on a computer or hand-held device

As well as:

  • to be thorough and pay attention to detail (organisational skills)
  • the ability to work well with others (teamwork skills)
  • the ability to work well with your hands
  • customer service skills
  • physical fitness and endurance
Illustration of employee looking at workspace

Entry Requirements:

To become a window fitter, you typically don’t need specific GCSE subjects. However, certain subjects can be helpful in preparing you for a career in this field and making you a more attractive candidate to potential employers. Some relevant subjects might include:

  1. Mathematics: A good understanding of basic math is essential for measurements, calculations, and ensuring windows fit correctly.
  2. Design and Technology: This subject can provide you with practical skills related to construction and working with tools, which are valuable in window fitting.
  3. Science: While not directly related, a basic understanding of physics and materials can be helpful when working with different types of windows and frames.
  4. Construction or Engineering: If available, courses in construction, engineering, or related subjects can give you a strong foundation for this career.
  5. Business Studies: Some window fitters may eventually run their own businesses, so understanding business principles can be beneficial.

Post School

You can get into this job through:

  • a college course
  • an apprenticeship
  • working towards the role
  • applying directly


You could start by taking a college course in construction or joinery. These courses would teach you some of the skills you need in this job and may help you when looking for a trainee position with a glazing company.

In the UK, for example, courses include:

  • Certificate in Construction Skills
  • Award in Carpentry and Joinery


You can get into this job by doing a fenestration installer intermediate apprenticeship.


You could be taken on by a glazing company as a fitter’s assistant or ‘mate’ and learn on the job by working with an experienced fitter.

Direct Application

You can apply directly to become a window fitter. There are no set entry requirements, though you’ll need maths skills to measure and work out dimensions.

Experience in carpentry and joinery may be helpful.


You’ll need a Construction Skills Certification Scheme (CSCS) card (in the UK) or equivalent to train and work on a construction site

Working Hours and Environment:

A typical week consists of 43-45 hours of work. You could be required to work evenings/weekends on shifts.

You could work at a client’s home or on a construction site. Your working environment may be outdoors some of the time and at height. You may need to wear safety clothing and use safety equipment.

Career Path & Progression:

You could become a site supervisor, window surveyor or estimator, or move into glazing sales and marketing.

You could also set up your own business or take up a window fitting franchise.