Zinsser Rust-Oleum Corporation Available Rust Oleum 02304 Problem Surface Sealer, 1-Quart, Clear, 32 Fl Oz

Excelente sellador de humedad. Me ayudo mucho con humedad que tenía en el baño. Lo súper recomiendo.

I used Zinsser Gardz on a wall that had been damaged by wallpaper removal, and I was blown away by the results. This stuff penetrates and seals porous, chalky, or damaged drywall like a dream. It dries clear and hard, creating a solid base for paint or wallpaper adhesive. The application was easy—just brush or roll it on. It’s low odor, water-based, and dries quickly. I noticed it locked down residual adhesive and prevented bubbling when I painted over it. It also helped even out the surface texture, which saved me from having to skim coat the whole wall. If you’re dealing with peeling paint, torn drywall, or old wallpaper glue, Gardz is a must-have. It’s not flashy, but it’s incredibly effective. I’ll definitely keep a quart on hand for future projects.

Excellent product for sealing up damaged drywall. I used it to help repair the wall after removing the tile backsplash in the kitchen. It sealed up the exposed paper and gypsum without causing it to soak in and lift away. Highly recommend for this type of repair.

I was not able to find this at the local Lowes or Home Depot, which really surprised me. Had to get it here. After viewing several YouTube videos this sealer was suggested by the majority of the painters. I removed a chair rail and when I was removing it from the wall, the paint came with it and tore the sheetrock paper in several areas. Sheetrock is covered by about 6 or 8 layers of brown paper before you get to the actual "chalk" like gypsum core. and you have to seal it to keep it from blistering. Moisture from joint compound (Mud) gets trapped behind the tape or paper surface, causing it to separate from the gypsum. It is easy to apply, I used a small paint brush. It has the consistentcy of watery glue so be careful when applying it or you will have it all over. It covered the areas easy. If you can buy the quart size I recommend it, a little goes a long way. I let it dry over night and came back the next day with the "mud" to cover the torn paper areas. It worked great, I had no "blisters" come up on any of the paper at all. And I had never "mudded" before , ( I was scared to death to try) but found out it is easier that it looks(always use a metal drywall knife or trowel that is at least 4 to 6 inches wide. Plastic trowels don't work as well. I got a quart of the ready made mud and it turned out great. Walls are smooth and paint went on super easy. (24 hours for the joint compound to dry)

This is truly a miracle surface sealer. I had badly crumbled drywall, with the paper gone in patches. Was unwilling to re-drywall so I followed instructions, sanded it down and painted it. You'd never know the problem area was there.