dktool
Well-known member
- Joined
- Apr 3, 2015
- Posts
- 316
After 3 years of saying I was going to do it, I finally did.
My roof had been coated with who knows what before I bought it 9+ years ago, then I coated it with a product that had catalist to mix in. Don't recall the name now but it was terrible to apply and did not last !
The 887 was very easy to work with.
I started with a super pressure wash with a gas powered unit with a spinning turbo nozzle, then a strub with TSP original formula from the 80's and a second pressure wash.
I went back and forth with multiple emails to a guy at Henry's tech support to get straight on factors of using the 887, I was starting to lean toward using the 687 instead, he convinced me it was not advised for rv's. And also to use 885 for patching and crack filling which I had quite a bit to do.
I did 2 coates 48 hrs. apart using a total of just over 2-3/4 gallons on 160 square feet which works out to more per sq. ft. (58) than Henry's spec of 1 gallon per 67 sq. ft.
Here's some pics, before, after 885 patch and after 2 coates of 887.
My roof was 10 miles of very bad road, some very rough !
My roof had been coated with who knows what before I bought it 9+ years ago, then I coated it with a product that had catalist to mix in. Don't recall the name now but it was terrible to apply and did not last !
The 887 was very easy to work with.
I started with a super pressure wash with a gas powered unit with a spinning turbo nozzle, then a strub with TSP original formula from the 80's and a second pressure wash.
I went back and forth with multiple emails to a guy at Henry's tech support to get straight on factors of using the 887, I was starting to lean toward using the 687 instead, he convinced me it was not advised for rv's. And also to use 885 for patching and crack filling which I had quite a bit to do.
I did 2 coates 48 hrs. apart using a total of just over 2-3/4 gallons on 160 square feet which works out to more per sq. ft. (58) than Henry's spec of 1 gallon per 67 sq. ft.
Here's some pics, before, after 885 patch and after 2 coates of 887.
My roof was 10 miles of very bad road, some very rough !
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