Fathead decals are primarily designed for indoor use, as they are made with materials that adhere best to interior walls and surfaces. While some customers may choose to apply their Fathead decals to outdoor surfaces, it is important to note that these products may not withstand harsh weather conditions such as heavy rain, extreme temperature fluctuations, or prolonged exposure to sunlight. This can lead to peeling, fading, or damage to the decal over time. If you are considering using a Fathead product outdoors, it is advisable to seek out specific outdoor-rated wall decals or stickers that are made for such environments. Additionally, Fathead may provide information on their website regarding the best practices for their products and any potential limitations. For accurate guidelines or recommendations, checking the latest details on the current web page might be beneficial.