What is the first step to take before wallpapering a room?

What is the first step to take before wallpapering a room?

• A. Caulk
• B. Prime
• C. Sand
• D. Remove trim

Answer: (A)

Gaps and seams must be sealed before hanging wallpaper. Caulk is used to fill gaps between the wall and trim, around windows and doors, and along ceiling lines, creating a smooth, continuous surface for the wallpaper to adhere to. If these gaps are left unsealed, the wallpaper edges can show through, and movement in the wall from humidity or settling can cause seams to crack or lift. After caulking, let it dry, then you’d typically do any light smoothing and proceed with priming before applying the wallpaper. This step establishes a stable, gap-free base for reliable adhesion, which is why it’s the first move in the prep work.

Gaps and seams must be sealed before hanging wallpaper. Caulk is used to fill gaps between the wall and trim, around windows and doors, and along ceiling lines, creating a smooth, continuous surface for the wallpaper to adhere to. If these gaps are left unsealed, the wallpaper edges can show through, and movement in the wall from humidity or settling can cause seams to crack or lift. After caulking, let it dry, then you’d typically do any light smoothing and proceed with priming before applying the wallpaper. This step establishes a stable, gap-free base for reliable adhesion, which is why it’s the first move in the prep work.