If your base is old wallpaper adhesive or another moisture-sensitive surface like wallpaper paste – you've probably already seen new filler or paint simply peeling off.
Here's the solution: Zinsser GARDZ – the stabilizing primer that professionals worldwide use when they want things done right, without making a mess of it...
Zinsser GARDZ penetrates, hardens weak substrates, and creates a waterproof film that prevents moisture from the filler or paint from reaching the problematic surface beneath the primer.
The result? A stable and strong base, ready for filling, painting, or wallpapering – with no risk of it falling off later.
If you want a professional result, use what professionals worldwide use – Zinsser GARDZ.