Insulation: The Foundation Of Energy Savings
Better insulation = heat pump works smarter, your bills drop lower. Government grants available.
Without proper insulation, even the best heat pump has to work harder. Insulation is the foundation that makes everything else perform better.
Flowing Energy into the Future
The Problem
A highly efficient heat pump is wasted in a poorly insulated home. It works harder and longer to maintain temperature.
Result: Lower savings, slower ROI, higher running costs.
The Solution
Proper insulation (internal walls, loft, pipes) lets your heat pump do its job efficiently.
Internal Wall Insulation (IWI)
Loft Insulation
Pipe Lagging
Government grants available
The Result
Savings: £200-600/year on heating
Efficiency: Heat pump works smarter
Cost: Often zero with grants
Find out what insulation upgrades your home needs — free audit.
Get Free Home Energy AuditInternal Wall Insulation
Solid-wall properties lose up to 35% of their heat through uninsulated walls. Internal Wall Insulation (IWI) is the most effective upgrade for these homes — insulated boards fitted to the inside of external walls dramatically reduce heat loss, lower energy bills, and make your heat pump work smarter, not harder.
Insulation In Action
Internal Wall Insulation (IWI)
Insulated boards fitted to the inside of solid external walls. Our specialist service for solid-wall properties. Reduces heat loss by up to 35%.
Loft Insulation
Rolls of mineral wool laid across your loft floor. Quick to install with immediate impact on heat retention.
Pipe Lagging
Foam insulation wrapped around hot water pipes to prevent heat loss. Keeps water hotter and reduces heat pump workload.
Insulation Types & Grants
Internal Wall Insulation (IWI)
Our specialist insulation service for solid-wall properties
What It Is:
Insulated boards or panels fitted to the inside of solid external walls. Adds a thermal barrier without altering the exterior of your property.
Where It Works:
- ✓ Solid-wall properties (pre-1920s, Victorian, Edwardian)
- ✓ Homes without cavity walls
- ✓ Properties built before cavity construction
- ✓ Can be retrofitted room by room
Installation:
- ✓ Fix insulated boards to internal wall surface
- ✓ Plaster finish for a seamless look
- ✓ Typically 1-2 weeks per room
- ✓ Minimal external disruption
- ✓ Professional installation by our team
Savings:
- ✓ Annual energy saving: £200-400
- ✓ Reduced heat loss by up to 35%
- ✓ Improved comfort (warmer walls, fewer draughts)
Grant Coverage:
- Boiler Upgrade Scheme: Can include
- ECO4 Scheme: Full cost coverage
Loft Insulation
What We Install:
- ✓ Mineral wool rolls (most common)
- ✓ Blown-in insulation (for difficult spaces)
- ✓ Rigid boards (for additional performance)
- ✓ Typical depth: 200-300mm
Installation:
- ✓ Access via loft hatch
- ✓ Lay insulation between joists
- ✓ Seal gaps around pipes/wires
- ✓ Takes 1 day
- ✓ Clean process
Savings:
- ✓ Annual energy saving: £400-600
- ✓ 25% heat loss reduction
- ✓ Improved summer comfort (keeps cool air in)
Grant Coverage:
- Boiler Upgrade Scheme: Can include
- ECO4 Scheme: Full cost coverage
Pipe Lagging
What It Is:
Foam insulation wrapped around hot water pipes to prevent heat loss.
Why It Matters:
Hot water loses heat as it travels through pipes. Lagging keeps water hotter, reduces heat pump workload, saves energy.
Installation:
- ✓ Simple wrap-around application
- ✓ Takes few hours
- ✓ Can DIY but we offer professional fitting
Savings:
- ✓ Annual energy saving: £100-200
- ✓ Improves system efficiency by 5-10%
- ✓ Often included free with heat pump installs
Bonus:
Often included FREE with heat pump installations
Government Grant Options For Insulation
Boiler Upgrade Scheme
£7,500
Can Include:
- ✓ Heat pump (primary measure)
- ✓ Internal wall insulation / IWI (secondary)
- ✓ Loft insulation (secondary)
- ✓ Pipe lagging (free addition)
ECO4 Scheme
Full Funding
Coverage:
- ✓ Full insulation cost for eligible households
- ✓ No upfront payment
- ✓ Fully funded installations
Measures Covered: Internal wall insulation (IWI), loft insulation, heating measures, smart controls
Insulation + Heat Pump Synergy
The Math:
Heat Pump Alone (Poorly Insulated Home)
- Estimated savings: £300-500/year
- ROI: 10-12 years
Heat Pump + Internal Wall Insulation (IWI)
- Estimated savings: £500-700/year
- ROI: 8-10 years
- Payback improved by 20%
Heat Pump + IWI + Loft Insulation
- Estimated savings: £700-1,000/year
- ROI: 6-8 years
- Heat pump working at peak efficiency
Heat Pump + All Insulation + Solar
- Estimated savings: £1,200-1,800/year
- Complete energy independence
- Multiple grants leverage
Complete Your Home Energy Upgrade
Insulation is often the most cost-effective first step. Combined with government grants, many customers get insulation improvements at zero cost. Add a heat pump and you unlock maximum savings potential.
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