Installation of roof insulation at rafter level or between and over ceiling joists. Improves thermal performance and reduces heat loss to meet building regulation requirements.
Typical cost
£1,200 — £2,500
Typical duration
2-3 days
Scope type
flexible
Typical tasks
Assess current insulation depth and specification
Install between-rafter insulation to depth required
Fit counter batten to maintain ventilation gap
Add insulation over joists to meet U-value
Ensure all edges and junctions are fully filled
Extras & additional works
Based on a standard 50m² roof area. Costs may increase if additional insulation or structural work is required.
Common questions Stainesai
The cost is influenced by the size of the roof, type of insulation used, access, and any additional work required to comply with Building Regulations. This is especially relevant where insulation upgrades affect ventilation, fire safety, thermal performance, or structural elements. Always confirm with your roofer before work begins.
Yes, roof insulation must comply with UK Building Regulations to ensure adequate thermal performance and safety.
For a standard-sized roof, installation usually takes 2-3 days, depending on the complexity and existing roof condition.
Common types include mineral wool, rigid foam boards, and reflective foil, each offering different thermal properties.
Generally, you can stay in your home, but there may be some disruption due to noise and access requirements. Always confirm with your tradesperson before work begins.
Ready to post a roof insulation installation job?
Describe what you need. Stainesai structures it into a proper scope. Your first job post is free.