Can You Use Interior Door Knobs Outside?
Interior and exterior doorknobs serve different purposes and are designed to withstand different conditions. While they may appear similar, there are key differences between the two types of knobs that make using an interior doorknob outside inadvisable.
1. Durability and Weather Resistance
Exterior doorknobs are made from durable materials such as brass, stainless steel, or aluminum, which can withstand the elements like rain, snow, sun, and extreme temperatures. Interior doorknobs, on the other hand, are typically made from less durable materials like plastic or ceramic, which are not designed to withstand outdoor conditions. Exposure to moisture and extreme temperatures can cause interior doorknobs to deteriorate, rust, or become brittle.
2. Finish and Protection
Exterior doorknobs often have a protective finish or coating to prevent corrosion and rust. Interior doorknobs may not have such a finish, making them more susceptible to damage from the elements.
3. Security Features
Exterior doorknobs often incorporate security features such as deadbolts or keyed locks to prevent unauthorized entry. Interior doorknobs typically do not have these features.
4. Functional Differences
Interior and exterior doorknobs may have different functional designs. Exterior doorknobs typically have a larger diameter to accommodate gloves and have a lever or handle design that is easier to operate from the outside.
5. Installation Requirements
Exterior doorknobs require a different installation process compared to interior doorknobs. They need to be installed on a thicker door with a larger hole and may require additional hardware like weatherstripping or a strike plate.
Exceptions
While using an interior doorknob outside is generally not recommended, there are a few exceptions where it may be acceptable:
- Covered or sheltered areas: If the doorknob is protected from direct exposure to the elements, such as under a porch or awning, it may be possible to use an interior doorknob.
- Temporary use: For temporary or seasonal use, such as on a shed or garden gate, an interior doorknob may suffice.
Conclusion
Using an interior doorknob outside is generally not advisable due to its limited durability, weather resistance, security features, and functional differences. If you need a doorknob for an exterior door, it is best to choose a doorknob specifically designed for outdoor use.
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