Hi-Tech Premium Rubberized Undercoat Spray – Rust Prevention, Moisture & Gravel Resistant – Paintable, Deep Black Finish – 19.4 oz Aerosol – VOC Compliant

I came up with an idea for a solution to "hair-line" settlement cracks on exterior stucco and window sill lentals. Sprayed and fanned it out like I was painting bodywork. Waited 2 hours and shot the areas a second time. Let it get full sun light over 2 days. (The imperfections were gone with the 1st coat applied) I bought the exact original Sherwin paint and gave it 2 coats. I was BLOWN AWAY with the sealing factor! At any angle and source of light, the house looked as if it was just completed again 9 years before! My IDEA for its use was an absolutely flawless and sealing repair. These were "hair-line" and in any particular pattern. Can't say how long it will present that way, but the rubberized material and the actual body color paint of the house has the same strong rubberized properties and showed no blotch or shadows under it. A really great product to say the least for a different kind of application! Again, these were only "hair-line" cracks and not "step-cracks" in the mortar joints of the concrete block. I would consider trying it for that clean sealing finish as a test. This is not a substitute repair for any ongoing stuctural underlying support defect/problem . If not, consider a foundation repair evaluation for obvious safety reasons.

Supreme quality paintable very low toxicity, 100% pleasure to use I guarantee you I will do use this product from here on out as a matter of fact I'm going to subscribe if I can LOL

tried to use on driveway cracks, did ok

Sprayed my frame on my truck just to cover the surface rust. It gives a great even coat an it’s been durable so far an it looks great!

I used this to help seal/repel water on a door frame. It was made from some type of fiber board. When this 'wood product' gets wet, it swells. A lot!! I was unable to rebuild the frame right away and it was swelling such that I would be unable to close the door soon. So I sprayed polyurethane and this stuff on it and it appears to be sealed-hopefully until spring when I can rebuild the frame.

Horrible product.. After shaking the recently deliverd spray can for over 8 minutes the product came out in chunks. No even spray was ever witnessed. Spray can nozzle is too small for the material to pass thru.. the nozzle had to be cleaned off several times before I gave up using it. I live in Florida, so the day time temperature was in the mid 80's and dry.

Excelente

Used this to strengthen and seal interior shower wall of rv shower we remodeled after having water damage. Insulated over sprayed area before sealing walls with bathroom shower panel