My newly poured floor is about 2 months old, and 572 sq ft. They used fiberglass or similar in the concrete, and I had many hairs sticking up, or laying flat on, or just under the surface. I power washed the floor, then did a acid etch with muriatic acid. Hosed the floor down well, and swept it out. Let dry overnight. Next day The fiberglass hairs were still there. I Tried to burn them off, and that did work great on the ones sticking up, but that wouldn’t do anything for the ones laying flat, just under the surface. Took some 80 grit sandpaper to the floor, and noticed this cleaned up the surface very well. So I decided to go rent a floor buffer from Home Depot. They recommended a 60 grit sandpaper disk. I sanded the floor down, then swept and washed the floor down. I acid etched the floor a second time, hosed down, swept, and power washed again.
Waited a week for the floor to dry properly. Swept and blew the floor clean. I used 18" rollers to roll the Hellfire down. Did three coats, waiting about 3 hours between coats. I used a brush on the stem walls, and expansion grooves. The Hellfire is pretty thin, and goes on pretty easy. Fumes weren't too bad.
I didn't have spike shoes, so I was lucky I only did about half the floor. The floor was very tacky after 3 hours, and couldn't really walk on it in shoes. I was able to reach everywhere with a long pole on the roller, on the second and third coat.
As UPS separated my shipment of 6 gallons, I only had 4 gallons. I coated about 1/2 the floor, and used about 2-1/2 gallons. I predict needing 5 of the 6 gallons I purchased.
Before and after pictures attached. Second 1/2 this weekend.
Waited a week for the floor to dry properly. Swept and blew the floor clean. I used 18" rollers to roll the Hellfire down. Did three coats, waiting about 3 hours between coats. I used a brush on the stem walls, and expansion grooves. The Hellfire is pretty thin, and goes on pretty easy. Fumes weren't too bad.
I didn't have spike shoes, so I was lucky I only did about half the floor. The floor was very tacky after 3 hours, and couldn't really walk on it in shoes. I was able to reach everywhere with a long pole on the roller, on the second and third coat.
As UPS separated my shipment of 6 gallons, I only had 4 gallons. I coated about 1/2 the floor, and used about 2-1/2 gallons. I predict needing 5 of the 6 gallons I purchased.
Before and after pictures attached. Second 1/2 this weekend.
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