3 percent every time, generally a 2nd coat will only be some tough spots. White roofs are the only times where it takes multiple applications. This is pertaining to asphalt shingles.
-- Edited by Zach Maynard on Friday 30th of August 2013 10:57:16 AM
Josh Scavetta said
Aug 30, 2013
for Sodium Hypoclorite i wanted to get a running tally on who is spraying 2 coats and if they are using 3% or 4%
We have been using one coat of 3% but have noticed sometimes it might require a second coat to get all the black streaks out. thinking about going to 4% for just one coat.
Any thoughts?
AC Lockyer said
Aug 30, 2013
On cedar never NEVER go above a 2% solution. Just remember that. Cedar roofs are the only ones I know that over use of bleach can actually remove natural color.
AC
John Aloisio said
Aug 31, 2013
We have not mixed a 4% for roofs yet. Depending on the severity of the stains, we use one coat and touch up with a second. Like Zach said...nasty white shingles almost always require two coats, and sometimes a third touch up coat.
Dan Dykstra said
Aug 31, 2013
So far I have never had to go above 3% here.
Tim Teed said
Aug 31, 2013
We are now 100% augmenting. 3% roof mixes unless it is really nasty.
Danny Cronauer said
Aug 31, 2013
We spray every roof with 4%, We do 1 coat, and then a touch up on the very heavy black areas. Most roofs 1 coat is all it takes, no touch ups.
As far as plants go, only burn ups we had were during the summer heat wave week.
Hank Timmermann said
Aug 31, 2013
Many(80%) of the roofs we service have extremely heavy moss and lichen due to the shade provided in this densely wooded area. We spray these roofs with a 4% plus mix. Other scenarios we spray with with 3%.
3 percent every time, generally a 2nd coat will only be some tough spots. White roofs are the only times where it takes multiple applications. This is pertaining to asphalt shingles.
-- Edited by Zach Maynard on Friday 30th of August 2013 10:57:16 AM
for Sodium Hypoclorite i wanted to get a running tally on who is spraying 2 coats and if they are using 3% or 4%
We have been using one coat of 3% but have noticed sometimes it might require a second coat to get all the black streaks out. thinking about going to 4% for just one coat.
Any thoughts?
AC
We have not mixed a 4% for roofs yet. Depending on the severity of the stains, we use one coat and touch up with a second. Like Zach said...nasty white shingles almost always require two coats, and sometimes a third touch up coat.
As far as plants go, only burn ups we had were during the summer heat wave week.
Many(80%) of the roofs we service have extremely heavy moss and lichen due to the shade provided in this densely wooded area. We spray these roofs with a 4% plus mix. Other scenarios we spray with with 3%.
Hank