Recent content by blackjack21

I've done a couple of patios where the cream color washes right off the concrete w the surface cleaner. Any suggestions? I just did one and the surface cleaner marks are still there-any way to fix it? thx as always, Blackjack

Get a 90 or 95 degree fan tip-no pressure, no worries about breaking screens Blackjack

I just cleaned a roof recently and there was a big black stain where a false chimney came out. The guy said he had a deisel burning furnice. Chlorine didn't work; I wonder if a good dereaser might do it! Any suggestions? Thanks as always. Blackjack

jb, What was the brand name of the sodium hydroxide (sh) cleaner that you used or did you mix it yourself? More importantly, where did you get the info that sh dissolves asphault; this sounds interesting? Thank you

Thanks Celeste. I'll definately give you a call.

Thanks again Delam; I'll check that out. I currently pay $55 for 50lbs of oxalic (powder). I will definately look into sodium precarb tho.

point well taken; thank you. i normally use sodium hypochlorite but i like to offer the other for people who insist on not using bleach. most of the other products i have seen are sodium hydroxide and or potassium hydroxide. you have a point in that it's best to pay someone who knows and...

Maybe the manager was just lowballing you; he could just be full of #$@!. If someone is doing it that cheap...so what. There will always be someone willing to pay you what your worth, it's up to you to convince them of your worth. Never give up. regards, blackjack

delam yes it's black. usually you will see streaks under the vents where the roof remains clean. i think it's due to the copper or some other metal in the vents. i thought about charging people to install copper strips after cleaning but i'm not sure how effective they are or how long they...

Thank you Henry for your reply.16 years in the biz; I'm sure you've seen enough to know. It's good to know that what I'm pitching is comletely valid. Do you think roof sealants work or are they bs? What's the easiest way to qualify myself to spot leaks and repair shingles? thanks again...

I've read that the mold on roofs eats at the granules on the shingles shortening their life span. Of course I've read this on pw companies web sites. 3M (shingle manufacturer) claims that the mold will not damage shingles and that it's strictly an aesthetic problem. It stands to reason that the...

I have seen a few roof cleaning products that are sodium hydroxide based. Does anyone know what to mix sodium hydroxide with if I buy the raw material. I'm assuming I can dilute it with water but how much? I saw Pressure Pros recommend sodium hydroxide and butyl(for concrete I believe)...

Anyway to clean green algae off screen enclosures besides bleach? The frame looks clean when its wet and then dries with agae still present. I'm sure bleach can't be good for the metal.???? thx in advance

thx everyone for your answers to my question. HOT WATER is it

Could somebody please tell me the best way to remove gum from walkways without a hot water machine. thx in advance