Cavity insulation installer

loft insulation installer insulator

Career outlook for cavity insulation installer

Figures and forecasts for roles at the same level, which require similar skills and qualifications.

Average UK salary


Currently employed in Scotland


Average UK salary


Currently employed in Scotland


"LMI for All" supplies our salary and employment status information. "Oxford Economics" supplies job forecasts and employment figures.

Due to COVID-19 the jobs market is constantly changing. Some of the information may not reflect the current situation.

What's it like?

You would inject insulation materials into the space in walls, roofs and lofts so people’s homes and other buildings are warmer and cheaper to heat.

You’d make the buildings more fuel-efficient so they’d use less energy and meet latest energy efficiency standards.

You’d do a survey before the installation to work out which methods and materials to use. You’d write a report for the customer and your manager.

You’d work out the volume of space that needs to be filled and calculate how much insulation will be needed.

In the building, you would:

  • Mark the ventilation, wiring and pipework ducts in walls
  • Seal up openings such as air vents
  • Drill a pattern of holes into the walls
  • Inject insulation materials into the spaces in the walls through the holes
  • Fill the holes and re-point the mortar, so it matches the original colour of the walls
  • Check that all the airbricks and flues are clear

You need to make sure that the materials and methods you and the team use meet building regulations.

You’d use special tools including hand-held electric and pneumatic drills, and injection pumps. You’d often work from a ladder, scaffolding or cradle equipment, so you’d need to follow health and safety rules.

You might also fit soundproofing materials in a building or sometimes remove insulation materials, for example for a demolition job.

Working conditions


You would work up to 45 hours a week, which may include weekends.


The job is physically demanding at times and you may be required to work in cramped conditions, for example when laying loft insulation.


A driving licence may be needed as you would travel from job to job.

UK employment status





Self employed


Here are some of the skills needed for this job. Sign in to see how your skills match up.

  • Verbal communication
  • Resourceful
  • Working with numbers
  • Attention to detail
  • Developing a plan
  • Implementing ideas
  • Managing resources
  • Time management

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Getting in

Entry requirements for courses can change. Always contact the college, university or training provider to check exactly what you’ll need.


No formal qualifications are required.

You could get into this role after completing a construction Modern Apprenticeship or completing a general construction course at college in: 

  • Building crafts
  • Construction and building
  • Practical construction skills

Useful subjects

  • English
  • Maths
  • Practical technologies subjects

Helpful to have

Qualifications that show an understanding of the industry, ability with power tools and knowledge of basic brickwork such as Skills for Work Construction (SCQF level 4/5).

A general construction or pre-employment course may be helpful.