Many so-called "garden rooms" are really just glorified summer houses. A true year-round garden room requires careful design and quality materials.
What Makes a Garden Room Year-Round?
The key factors are:
- High-performance insulation throughout
- Quality double or triple glazing
- Proper ventilation systems
- Efficient heating solutions
- Airtight construction
Winter Considerations
To stay warm in winter, your garden room needs:
- Adequate insulation in walls, floor, and roof
- Draught-free windows and doors
- Efficient heating (electric radiators, underfloor heating, or air source heat pumps)
- Thermal mass to retain warmth
Summer Comfort
Overheating is often overlooked. Consider:
- Opening windows for cross-ventilation
- Solar control glass to reduce heat gain
- Roof overhangs or external shading
- Air conditioning for hot days
Heating Options
Electric Radiators
Simple, cost-effective, and easy to install. Modern electric radiators are efficient and controllable via smart thermostats.
Underfloor Heating
Provides even warmth and frees up wall space. Works brilliantly with insulated floors.
Air Conditioning Units
Heat and cool your space efficiently. Modern units are quiet, energy-efficient, and can be controlled remotely.
Ventilation
Good ventilation prevents:
- Condensation and damp
- Stale air and odours
- Overheating in summer
- Health issues from poor air quality
The LouMil Difference
Every LouMil garden room is designed for year-round use as standard. We don't compromise on insulation, and we ensure proper heating and ventilation from the design stage.



