Exterior doors should not only be stylish, but also durable and energy-efficient. In this article, we will discuss the different materials, thicknesses, infills and styles of exterior doors to help you make the best choice.

Exterior door materials

Wooden exterior doors

Wood is one of the most popular materials for exterior doors. Its natural appearance and excellent thermal insulation make it an ideal choice for many homes. Typically, the thickness of a wooden door ranges from 68 to 90 mm, and the infill is solid wood or layered plywood with thermal insulation. The disadvantages of wood are the need for regular maintenance and susceptibility to moisture and insects.

Steel exterior doors

Steel exterior doors are very durable and resistant to break-ins, making them an ideal choice for those who value security. The standard thickness of such doors is 45 to 70 mm, and the filling is polyurethane foam or mineral wool. Although steel can rust with a damaged protective coating, these doors require minimal maintenance.

Aluminum exterior doors

Aluminum is a lightweight and corrosion-resistant material that is often used in modern designs. Aluminum doors are typically 65 to 90 mm thick, and are filled with polyurethane foam or polystyrene. Although aluminum is more expensive and offers lower thermal insulation than wood, its modern appearance and low maintenance are significant advantages.

PVC exterior doors

PVC, is a material known for its excellent thermal insulation and moisture resistance. PVC doors are 70 to 90 mm thick and are filled with polyurethane foam, sometimes reinforced with steel inserts. Although PVC can be less durable than steel or aluminum and fade when exposed to the sun, it is an economical choice requiring minimal maintenance.

What fillings are used in exterior doors?

Polyurethane foam

Polyurethane foam is a lightweight material that provides excellent thermal and acoustic insulation. It is commonly used as an infill for exterior doors, increasing their energy efficiency.

Mineral wool

Mineral wool has very good thermal and acoustic insulation, and is also fireproof. It is an infill that offers high fire protection and is great for exterior doors.

Polystyrene (Styrofoam)

Polystyrene, also known as Styrofoam, is a lightweight material that provides good thermal insulation. It is less acoustically effective than polyurethane foam or mineral wool, but is an economical choice for exterior doors.

Exterior door thicknesses

Standard door thicknesses

The thickness of an exterior door affects its insulation and security. The most common thicknesses for different materials are:

• Wooden: 68-90 mm, the most common thicknesses are 78 mm and 88 mm.
• Steel: 45-70 mm, most commonly 50-60 mm.
• Aluminum: 65-90 mm, most often 70-80 mm.
• PVC: 70-90 mm, most often 70-80 mm.

What is the best thickness of an exterior door?

The optimal door thickness depends on the individual user’s needs and climatic conditions. Thicker doors offer better thermal and acoustic insulation and increased security.

Tips for choosing an exterior door

When choosing an exterior door, it is worth considering the style of the house, thermal and sound insulation requirements and aesthetic preferences. It is also important that the door is well protected against burglary and provides adequate thermal insulation.

Regular maintenance of exterior doors will extend their life and ensure that they will last for many years.

Summary

Choosing an exterior door is an investment for years. It is worthwhile to think carefully about your needs and possibilities in order to choose a door that is not only functional, but also aesthetically pleasing. Feel free to contact our experts to help you choose the perfect exterior door for your home.