Insulation
Request quotes for loft, cavity wall, solid wall and floor insulation, spray foam and soundproofing. Choose your job and describe it in a few short steps.
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Overview
Insulation and soundproofing
This page covers insulating a home: lofts, roof rafters and joists, flat roofs, cavity walls, solid walls inside or out, suspended and solid floors, spray foam and soundproofing, plus removing old cavity wall or spray foam insulation.
Pick the nearest job from the list in the form. If yours isn't there, choose the closest and explain what you need in the description.
Jobs you can request
Typical insulation jobs
Choose one of these in the form, or pick the closest and describe what you need.
Loft Insulation
Insulation laid between and over the joists of a loft floor.
Cavity Wall Insulation
Insulation blown into the gap between the inner and outer leaves of a wall.
External Solid Wall Insulation
Insulation boards fixed to the outside of a solid wall, then rendered or clad.
Internal Solid Wall Insulation
Insulated boards or a stud wall fitted to the inside face of a solid wall.
Spray Foam Insulation Removal
Spray foam insulation removed from the underside of a roof.
Sound Proofing
Walls, floors or ceilings insulated to reduce noise between rooms or homes.
Worth knowing
Worth checking before work starts
A few rules and checks that apply to this kind of work.
Cavity walls
In England, cavity wall insulation is notifiable building work. Check that your installer will either self-certify it through a competent person scheme or submit a building notice.
Spray foam in the roof
RICS, the surveyors' body, says spray foam in a roof could affect a surveyor's opinion of a home's value. It advises checking with your mortgage lender and insurer first.
Loft ventilation
Ask how the installer will keep the loft ventilated. Insulation that blocks the vents at the eaves can lead to condensation in the roof.
Questions
Insulation questions
My job isn't in the list. What should I choose?
Choose the closest job, then explain what you need in the description step.
What jobs can I request quotes for here?
Loft, roof and flat roof insulation, cavity and solid wall insulation, floor insulation, spray foam, soundproofing and insulation removal. The full list is in the form's first step.
Do I need planning permission for insulation?
In England, not normally, unless it changes how the outside of your home looks, as external wall insulation can. If your home is listed or in a conservation area, ask your council first.
What paperwork should I get after spray foam is fitted?
RICS recommends getting the installation contract, the calculations, details of any work to the roof, any warranty, and any independent test certificate, such as a BBA or Kiwa certificate.
How much does loft insulation cost?
It depends on the size of the loft, how much insulation is there already, how easy it is to get in, and whether boards or stored things need moving first. Ask each installer to quote for the same depth of insulation, so the quotes compare.
What is the best loft insulation?
It depends on how you use the loft. Rolls laid between and over the joists suit a loft you don't use. If you want to store things, ask about boards on raised supports, so the insulation isn't squashed.
Ready to describe your job?
Four short steps: the job, when you'd like it done, a description and your details.