I just volunteer to clean this roof for free; its a local church and it would be good marketing material, only one thing though...roof is asbestos shingles any help would be appreciated. I have never cleaned asbestos roofs. here are some pictures. any help would be greatly appreciated.. thanks everyone...
Thanks for the input guys, I did a couple of test spots with the mix on this roof and on one I used a 50/50 mix with ammonyx lo; and on the 2nd I used straight SH with ammonyx lo; the first spot gave me some foamy reaction but no cleaning effect, very disappointing; the 2nd spot of straight SH with the am' lo gave me a foamy reaction, after foam cleared shingle was cleaned..
question is? Is the SH I'm getting too weak? or am I screwing up the mix somehow?..
I'm trying to buy my SH from a different place, but it seems like all the places in California get their SH from the same manufacturer... H.A.S.A Inc does anyone know anything about them?..
Until I find a better vendor of SH I'm forced to buy from the same place; I'll just have to increase my SH to water ratio... Half as strong available.. Good one! Lol
Looks like your SH is weak I would get it some where else your 50/50 pic should look like your 100% .If you have a strong batch you should get buy with 30 to 35% SH .
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Gordon Caldwell Central Ky Roof & Exterior Cleaning 270-849-5283 ckyroofcleaning@windstream.net www.centralkyroofcleaning.net
Jose you left out a very important ingredient esp. for asphalt shingles. Your mix of 50-50 is to strong but you left out alcohol! It does make a big difference give it a try. I just looked at your photos...the 50/50 I would maybe hit again and leave it for the rain.....try the alcohol!
This is actually asbestos; I don't know if that makes a difference..
I tried alcohol in my previous roof mix of 50/50 and it didn't seem to make a difference; this was a tile roof..
alcohol is a waste of money it does nothing but create dangerous gases. Check with the manufacture and see what percentage the sh is and make sure its atleast 10% or higher. Your test spot of 50/50 mix might need a good rain the see the final result. I still cant believe your doing that roof for no exchange not even a listing in the church bulletin.
I think its a dwell time issue.... the 100% is the best one. Need to find a way to make to 50% hang around a little longer. Are you putting any detergent in the mix to help with the dirt?
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Ray Burke
Spray Wash Exterior Cleaning
850.528.3226
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