Can You Use an Interior Door Handle on an Exterior Door?

Yes, you can use an interior door handle on an exterior door if certain conditions are met. However, it's important to understand the limitations and considerations involved. Generally, interior door handles are not designed for the harsh outdoor conditions and may not provide adequate security or durability. This article delves into the pros and cons of using an interior door handle on an exterior door.

Understanding the Limitations

There are several reasons why using an interior door handle on an exterior door is not recommended:

Durability

Interior door handles are typically made from materials that are not designed to withstand outdoor conditions such as moisture, temperature fluctuations, and UV exposure. As a result, they may rust or corrode over time, compromising the handle's functionality and appearance. This is especially true if the handle is exposed to the elements without proper protective coatings or treatments.

Security

Exterior doors require locks that provide adequate security, particularly against break-ins. Interior door handles often lack the robust locking mechanisms necessary for exterior use. A simple latch or a basic handle can be readily broken into, making your home more vulnerable to intruders. Additionally, the thinner protective coating of an interior handle may not provide the same level of weather resistance as an exterior handle, leading to quicker degradation and potential damage.

Weather Resistance

Exterior door hardware is usually treated or constructed from materials that resist weather-related wear and tear. For example, solid brass, bronze, or stainless steel are commonly used for outdoor hardware because they have better resistance to moisture, temperature changes, and corrosion. Interior handles, on the other hand, may not have these protective measures, making them less suitable for outdoor use.

Building Codes

Depending on local building codes, using an interior handle on an exterior door may not meet safety and security regulations. Building codes often require specific types of locks and hardware to ensure that doors are properly secured and protect against unauthorized entry. Using an interior handle on an exterior door may not comply with these regulations, potentially putting your home at risk of not meeting legal standards.

Alternatives to Consider

If you need to replace an exterior door handle, it is best to use hardware specifically designed for outdoor use. This ensures durability, security, and compliance with building codes. When choosing alternative hardware for exterior doors:

Weather Resistance: Opt for solid brass, bronze, or stainless steel materials. These materials are more resistant to weather-related wear and tear and can withstand outdoor conditions better than plated steel. Durability: Choose hardware with robust locking mechanisms, such as deadbolts or multiple-point locks, to ensure that your door is secure and less likely to be forced open. Security Features: Ensure that the handle you choose is compatible with additional security features like touchpad deadbolts or keyless entry systems, which can enhance the overall security of your door.

Common Issues and Concerns

There are some common issues and concerns associated with using interior door handles on exterior doors:

Latch Design

Exterior doors are often thicker than interior doors, and some latches are not designed for thicker exterior doors. Using an interior door handle with a latch that is not suitable for an exterior door can lead to inadequate security and potential damage to the door.

Material Compatibility

Possibly the most significant issue is the material compatibility. Plated steel interior door handles may not hold up to the elements as well as solid brass, bronze, or stainless steel exterior handles. The thicker protective coating of an exterior handle can help it withstand weather conditions much better.

TouchPad Deadbolts

Touchpad deadbolts are often chosen by homeowners for their convenience. However, this convenience can also be a security risk. If the handle and deadbolt system are only secured by a code, there is a higher risk of unauthorized access. It is essential to ensure that the system includes additional security measures, such as key strikes or keyless entry systems, to prevent this.

Conclusion

While it is technically possible to use an interior door handle on an exterior door, it is strongly recommended to use specific hardware designed for outdoor use. This will ensure that your door is both secure and compliant with local building codes. Remember to consider factors such as durability, weather resistance, and the specific requirements of your outdoor environment to select the right hardware for your doors.