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.

Yes, you can apply peel-and-stick wallpaper over wood paneling, but it requires significant preparation for a good result. Peel-and-stick wallpaper has a weaker adhesive than traditional wallpaper and works best on smooth, non-textured surfaces like painted or primed drywall. Because wood paneling is often textured with grooves, any flaws in the underlying surface will likely be visible after application. To prepare the paneling, you must ensure the surface is free of cracks, holes, and protrusions by filling any indentations and sanding rough spots to create a smooth surface. An alternative is to remove the paneling and apply the wallpaper directly to the underlying drywall or plaster, provided it is in good condition.

Hiring a professional wallpaper hanger is usually a worthwhile idea because, while the application of wallpaper itself is easy, getting the finished product to look good is complicated and takes a lot of practice and patience. A professional wallpaper hanger will not only be able to hang your wallpaper seamlessly, but they will also get an even application of wallpaper paste to avoid bubbling and imperfections immediately and over time. Plus, they can provide their professional opinion on whether to remove or wallpaper over an existing layer of wallpaper.

The average cost to install or hang wallpaper is around $575 per room or project, with typical prices ranging from $200 to $1,500. Costs can be higher for custom or luxury products. Since project size varies, it's often helpful to estimate labor costs per square foot, which generally fall between $1 and $7, with an average of $4 per square foot. The total cost depends on several factors, including the quality and type of wallpaper, the size and type of the room, and whether old wallpaper must be removed first. Opting for less expensive materials like peel-and-stick wallpaper or choosing to do the installation yourself can lower the overall cost. For the most accurate estimate, it is best to have a professional inspect the space and provide a quote.