Worried that your steel door gets hot under the sun? Learn how it affects indoor temperature and discover the best door options for hot climates.
Do Steel Doors Get Hot?
Yes — like all metal surfaces, steel doors can get hot when exposed to direct sunlight. This is especially true if:
- The door faces the sun for many hours
- The color of the door is dark (like black or dark brown)
- There is no shade or cover in front of the door
But the big question is — does that heat affect the temperature inside your home or building?
Will a Hot Steel Door Heat Up Your Room?
Not really — if you choose the right door.
Here’s why:
1. Insulation Helps Block Heat
Most modern steel doors are made with a built-in insulated core, usually polyurethane or polystyrene.
This material slows down heat transfer and helps keep the indoor space cooler, even when the sun is strong outside.
2. The Heat Stays Outside
Even if the outer surface feels hot, the inside part of the door stays much cooler.
Think of it like a coffee thermos — the outside may be hot, but the inside stays stable.
3. Minimal Impact on Indoor Temperature
If the door is properly insulated and sealed, it won’t raise the temperature inside your room.
So even during summer, a quality steel door won’t make your space feel hotter.
Tips to Keep Steel Doors Cooler
To reduce heat buildup on your door, consider these easy tips:
✅ Pick a light color — white or light grey reflects sunlight better
✅ Install a small awning or roof above the door
✅ Use UV-resistant coating or paint
These small choices can make a big difference in comfort and energy savings.
Best Option for Hot Regions: Ventilated Steel Doors
If you live in a very hot or humid area, another smart choice is a ventilated steel door.
These doors come with built-in louvers or vent panels that allow air to flow through.
Steel doors can get hot in the sun — but that doesn’t mean they will make your home or room hotter.
With proper insulation and smart design, a steel door remains energy-efficient and comfortable even in high temperatures.
And if you need extra airflow, ventilated steel doors are a perfect solution.
Need Help Choosing the Right Door?
We offer a wide range of insulated and ventilated steel doors.
Contact us today for expert advice and a free quote!
