Superfoil Insulation
Multi-layer reflective insulation for roofs, walls & floors. Thin but highly effective
Get Free Quotes from InstallersWhat is Superfoil Insulation?
Superfoil (also called multifoil or reflective insulation) is a thin, multi-layered insulation material that works by reflecting heat back into your home. It typically consists of layers of reflective foil separated by wadding or foam, creating an effective thermal barrier in a much thinner profile than traditional insulation.
Superfoil is ideal where space is limited - in loft conversions, shallow walls, or under floors. While thinner than traditional insulation, it can achieve similar thermal performance when installed correctly with proper air gaps. It's often used alongside other insulation for maximum effectiveness.
Key Benefits
Ultra Thin
Just 20-40mm thick vs 200-300mm for traditional insulation
Versatile
Works in roofs, walls, floors - anywhere space is limited
Quick Install
Lightweight and easy to fit - faster than traditional insulation
Vapor Barrier
Built-in moisture protection - reduces condensation risk
Reflects Heat
Reflects up to 95% of radiant heat back into rooms
Good Value
Cost-effective solution where traditional insulation won't fit
Superfoil Insulation Costs
Typical Project Costs
Loft: £800-£1,500 | Walls: £1,500-£3,000 | Underfloor: £1,200-£2,500
Installation Critical
Must have 25mm air gap each side to achieve stated performance - professional installation recommended
Is Superfoil Right for You?
✓ Ideal For:
- • Loft conversions with limited headroom
- • Shallow cavity walls or where cavity is filled
- • Under suspended floors with limited joist depth
- • Extensions and outbuildings
- • Roof insulation where rafter depth is limited
⚠ Important Notes:
- • Requires 25mm air gap each side to work effectively
- • Not suitable as sole insulation in very cold climates
- • Performance depends heavily on correct installation
- • Often used alongside traditional insulation for best results
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