Spring and fall are the best seasons to apply wallpaper because excessively hot or cold temperatures can cause issues with the paste used to attach the paper to the wall. A professional wallpaper hanger can help you decide if your home is too hot, cold, humid, or dry for the wallpaper to stick properly.

In most cases, it is not recommended to wallpaper over existing wallpaper, as the success depends on the type of paper already on the wall. While you might be able to cover non-coated wallpaper, you should never apply new wallpaper over a vinyl-coated one, which is more common. Doing so can lead to poor adhesion, resulting in bubbles, imperfections, and peeling. It can also trap moisture, potentially causing hazardous mold growth between the layers.

Even if the existing wallpaper is suitable, experts recommend applying only one new layer. Adding multiple layers (more than two total) can cause significant adhesion problems, leading to warping and bubbling. For the best results, the recommended approach is to remove the old wallpaper and all paste residue before hanging the new paper. If you are unsure about your wallpaper type, consider consulting a professional.

While many types of peel-and-stick wallpaper can be used in bathrooms, they may not adhere as well in humid environments as traditional wallpaper. For best results, choose a vinyl or polyester-based wallpaper, as these materials are more durable and water-resistant. Good ventilation is also crucial to reduce humidity from steamy showers. In bathrooms with high moisture and inadequate ventilation, even high-quality peel-and-stick wallpaper is likely to peel over time.

It is less costly to paint than wallpaper when you only consider the upfront cost. Wallpaper costs $320 to $820 when applied by a pro, while paint only costs $200 to $700 per room. However, when comparing wallpaper versus paint, consider the long-term as well. Wallpaper can save you money over time since it has a much longer life span than paint.