Skip to main content
Triple 1Building Services

Loft insulation and ventilation

A lot of the heat in a home can be lost through the roof. Good loft insulation helps keep that heat in. The right airflow stops damp and condensation building up in the loft.

Thick rolls of loft insulation laid between the joists in a loft

What's included

  • Checking the loft and the insulation you have now
  • Laying new insulation or topping up what is there
  • Keeping air moving through the loft so it stays dry

Who it's for

  • Homes with thin or old loft insulation
  • Rooms upstairs that feel cold in winter
  • Lofts with damp patches, mould or condensation
  • Anyone planning to make their home cheaper to heat

How your loft insulation & ventilation project works

  1. Survey

    We look in your loft and check the insulation and airflow.

  2. Quote

    We send you a quote that sets out the work.

  3. Install

    We fit the insulation and make sure air can still move through the loft.

  4. Sign-off

    We check the finished loft with you.

Our loft insulation & ventilation work

  • Insulation boards fitted between new roof timbers on an extension
  • Worker sealing insulation boards between roof timbers
  • Insulation boards between timber joists on a flat roof
See all our projects

Questions people ask

Why does my loft need ventilation as well as insulation?

Warm, damp air from your home rises into the loft. If it cannot escape, it can turn into condensation on the cold roof timbers. That can lead to damp and mould. Insulation and airflow need to work together.

How do I know if my loft insulation is good enough?

If your insulation looks thin, squashed or patchy, or the rooms upstairs feel cold, it is worth having it checked. We can look at it for you.

How long does it take?

Every project is different. The time it takes depends on the size of the job, where it is and other things. We give you a timeline with your quote. We are flexible and put your timeline first.

Do I need to clear my loft first?

It depends on the size of your loft and how easy it is to get into. We will tell you when we visit.

Ready to talk about your loft insulation & ventilation project?

Tell us what you want to build. We'll get back to you about a survey and a quote.