John Orr
Member
I will admit up-front that I have never tried HD-80.
Last year, I used Remove from SunBrite and was very pleased with the results, though it didn't do a very good job of stripping the tougher finishes.
This year, I ordered SunBrite's new Severe Strip and it is truly an amazing product. I can't say what I am able to strip because the homeowners usually don't know, but I did a pressure treated deck the other day that had at least 4 coats of redwood stain...and it took 98% off the first pass - using about 500 psi/4 gpm!
I use oxalic acid from The Chemistry Store for neutralizing/brightening...also for rust stains and concrete brightening.
For roofs, I use Roof Brite, also from SunBrite, and I am able to rinse with about 300 psi and they look great.
Last year, I used Remove from SunBrite and was very pleased with the results, though it didn't do a very good job of stripping the tougher finishes.
This year, I ordered SunBrite's new Severe Strip and it is truly an amazing product. I can't say what I am able to strip because the homeowners usually don't know, but I did a pressure treated deck the other day that had at least 4 coats of redwood stain...and it took 98% off the first pass - using about 500 psi/4 gpm!
I use oxalic acid from The Chemistry Store for neutralizing/brightening...also for rust stains and concrete brightening.
For roofs, I use Roof Brite, also from SunBrite, and I am able to rinse with about 300 psi and they look great.