MyWarm
home.co.uk
Insulation is a heat retainer not maker.
Understanding why insulation, airtightness, moisture, and ventilation must work together.
Insulation doesn’t make heat.
It slows heat escaping from your home.
Think of an Insulation as a heat retainer, not a heat maker.Without insulation, heat leaks out through walls, roofs, and floors. Insulation acts like a warm coat around your house, keeping the heat you’ve paid for inside for longer.
How insulation keeps your home warm.
- Your heating system warms the air and surfaces inside your home.
- Insulation slows heat trying to escape through walls, lofts, and floors.
- The house stays warm for longer, even when the heating is off.
- Your heating system doesn’t have to work as hard to maintain comfort.
Insulation slows heat transfer by trapping air in materials, reducing conduction, convection, and radiation, keeping heat inside in winter and outside in summer, improving energy efficiency and comfort.
How to “run” insulation (yes, there is a right way)
Insulation works best when it’s:
- Matched to the building (solid walls ≠ cavity walls)
- Continuous (no gaps or missing sections)
- Correctly installed (compressed insulation doesn’t work properly as we are squeezing the trapped air that is needed.)
- Paired with ventilation to manage moisture



What makes insulation different from heating.
| Heating | Insulation |
|---|---|
| Produces heat | Keeps heat in |
| Uses energy | Uses none |
| Ongoing running costs | One-time improvement |
| Temporary warmth | Lasting comfort |
| Mechanical system | Passive protection |
Think of an Insulation as a heat retainer, not a heat maker.Without insulation, heat leaks out through walls, roofs, and floors. Insulation acts like a warm coat around your house, keeping the heat you’ve paid for inside for longer.
Unlike heating systems, insulation is always working 24/7, silently, with zero energy use.
Why insulation changes how homes feel.
A well-insulated home:
- Feels comfortable at lower thermostat settings.
- Warms up faster.
- Cools down slower.
- Has fewer cold spots and draughts.

Remember! Energy Upgrades and Ventilation Must Work Together
Before insulation or airtightness upgrades:
- Check extractor fans are working correctly and achieving suitable extraction rates
- Ensure vents and air bricks are not blocked
- Confirm adequate airflow exists in loft spaces
- Address any existing damp or mould problems
- Ensure air can move properly around the property
It’s the difference between heating the air and heating the space.
Unlike heating systems, insulation is always working 24/7, silently, with zero energy use.
How insulation keeps your home warm.
- Your heating system warms the air and surfaces inside your home.
- Insulation slows heat trying to escape through walls, lofts, and floors.
- The house stays warm for longer, even when the heating is off
- Your heating system doesn’t have to work as hard to maintain comfort.
Insulation slows heat transfer by trapping air in materials, reducing conduction, convection, and radiation, keeping heat inside in winter and outside in summer, improving energy efficiency and comfort.
Types of Insulation.
Internal Wall Insulation* (Coming Soon)
Room In Roof Insulation* (Coming Soon)
Underfloor Insulation* (Coming Soon)
Flat Roof Insulation* (Coming Soon)
Pipe Insulation* (Coming Soon)
Draught Proofing* (Coming Soon)
*coming soon.
Insulation reduces the amount of heat you require. whatever heating system you use.
Why insulation matters even more with heat pumps.
Heat pumps deliver heat gently and efficiently so Insulation,
- Keeps that gentle heat inside
- Reduces heat pump size and running costs
- Improves comfort and system lifespan
- Makes low-temperature heating actually work
In simple terms:
Insulation improves every heating system, especially heat pumps.