Can Interior Paint Be Used Outside?

When building or renovating a house, choosing the right type of paint is crucial. One frequently asked question is: can interior paint be used on the exterior of the house? The short answer is: it's not recommended. Why is that?

Consider the following explanation to avoid choosing the wrong paint and end up wasting money.

Differences Between Interior and Exterior Paint
Interior and exterior paints have different chemical compositions because they are designed to withstand different environmental conditions.

1. Interior Paint
Designed for indoor spaces

Does not contain protective ingredients against UV rays, rain, or extreme temperature changes

Generally smoother and less scratch- or moisture-resistant

Safer for indoor spaces due to minimal odor and VOCs (volatile organic compounds)

2. Exterior Paint
Highly resistant to weather, sunlight, rainwater, mold, and mildew

Contains additional protective ingredients such as anti-UV, anti-fungal, and waterproofing

The formula is stronger and more elastic to adapt to the movement of exterior walls due to heat and cold

What are the Risks of Using Interior Paint on Exteriors?
Using interior paint on the exterior of the house can cause:

Colors to fade quickly in direct sunlight

Peeling or cracking due to rain and heat

Mold and moss growth due to its inability to withstand moisture

Reduces aesthetics and accelerates surface damage to the wall

So, even though it may seem cheaper, interior paint is not suitable for outdoor use because it lacks the required durability.

When Can Interior Paint Be Used?
Use interior paint only for indoor walls, such as:

Bedroom

Living room

Kitchen (with good circulation)

Family room

For semi-open areas such as terraces, garages, or balconies, it's best to stick with exterior paint for longer durability.

Use Paint According to Its Purpose for Maximum Results
PT Intisumber Bajasakti provides interior and exterior paint from trusted brands used in various residential and commercial projects. A wide selection of colors and types are available to suit your needs.

📞 Contact us: +6221 66675999
🌐 Official website: www.intisumberbajasakti.com

Back to List