So, we had some time yesterday for three gens (Pop, my eldest son and me) to knock out an entire roof re-coating. We had all our equipment setup and ready at 8am (hard to get the teens up early). Knock out worked like this:
1) Set the forklift (16 ft rise) with a people carrier to shuttle us all the way around cleaning, laying tape and plastic.
2) Getting rid of major blisters with floor scraper.
3) 20% TSP solution - broom wash loose dirt and bird poop.
4) Fire up the Landa 3500psi pressure washer with hot-pot. Any places that showed a de-lamination or scrapped blister were hit hard (1" off surface). You can see my son was digging into one spot in the picture. I would do the outside, he would do the center (uninterested in urgent care visit). You can see the white shift from clean to dirty. Having a heater (hot-pot) on a pressure washer made that possible. It just literally would cut through all of it, but if it could hang on with 2-4" away, it's solid.
5) Let it dry with help of a leaf blower, which is invaluable for getting the flaked paint off. I suggest having a metric butt-load of microfiber towels for spot dry, cleaning hose trash off, etc.
6) Painting Henry 887 Tropicool, per instruction (front to back first coat, sideways painting from the people carrier on the forklift front side to side on second) Was able to get back on the second coat in 2 hours, no lifting/pulling of the base coat. I think we *might* be a little thin, but I don't see how anyone puts it on thicker on that roof with a 3/4 nap roller. Used 80% of one 5 gallon bucket in two coats.
7) Shot at 4:10pm when done with second coat (low with shadow from building).
8) Pulled off all the tape and plastic with forklift. This was one of the hardest things we did. That 3M blue did NOT want to come off the paint. It was crazy. It took easily 45 minutes, and almost 15 min longer than putting it up!
9) Rolled her back in the warehouse to sit overnight with the heaters on. Those kind of silane/silicone don't like to cure cold even though they say they can paint down to 35F, letting her cure indoors at 55+ degree F helps.
She was right as rain this AM, last two photos are front and back views. Film from the Henry is SIGNIFICANTLY thicker than test subject.
All in all, couldn't ask for a better day - we killed it (and I'm paying for it today!)
Roof in a Day!
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