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Loft Insulation

Spray Foam

Spray foam insulation is applied as a liquid that expands to fill the spaces between rafters, creating a seamless, airtight insulation layer with no gaps or cold bridges. Open-cell spray foam is breathable and ideal for older properties, while closed-cell foam provides a rigid, moisture-resistant barrier. Spray foam is particularly effective in awkward loft spaces with irregular shapes, pipes, and obstructions that are difficult to insulate with boards or rolls.

Why Choose Spray Foam?

  • Expands to fill every gap — eliminates cold bridges and draughts
  • Creates an airtight seal for maximum energy efficiency
  • Ideal for irregular spaces, around pipes, and between rafters
  • Open-cell option is breathable and suitable for older properties
  • Long lifespan with no settling or degradation over time

Price Guide

£1,200–£3,000

Typical cost for a standard loft

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Frequently Asked Questions

Does spray foam insulation affect my mortgage or property sale?

Some mortgage lenders have concerns about spray foam insulation, particularly if it has been applied directly to the underside of roof tiles. We use methods and products that comply with industry standards and do not negatively affect property valuations or mortgage applications. We always discuss this with you before recommending spray foam.

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