Chlorine on Asphalt Roofs

[Tim Smith]

Does anyone use chlorine to clean asphalt roofs?

 

[Tim Smith]

I do - it works great.

I use about two gallons of chlorine, cup of soap, 3oz of TSP -- add 3 gallons of water.

Hit bad spots with pump-up sprayer and spray entire roof with XJet. Let set about twenty minutes and rinse with the XJet.

Sometimes, I don't even get on the roofs. Spray and rinse from the ground.


WORKS GREAT. Chemicals for an average roof: $10.00

 

[Mike Hughes]

I dont do roofs, or I would comment........

 

[Mike Smith]

Chlorine works very well cleaning roofs. I apply with a shur flow pump on roofs I can walk. I mix it up around 30% with a higher percentage for really bad staining or lighter roofs. I mix it with some dawn for added cling. I just got my x jet and plan on cleaning a roof with it as soon as the weather gets up to 50 degrees or better.

 

[Tim Smith]

Mike

The xjet is great for roofs - there is a lot of overspray, so you really have to wet things down.

Some times, I will walk a roof that is in pretty bad shape and rinse with the x jet.

For the most part, direct pressure is not needed when using chlorine.

 

[Mike Smith]

Thanks Tim. I can't wait to try it out I know its a great tool for house washing. If it can improve cleaning roofs also I will be very happy.

 

[apw]

my roof mix is 1:1 6% bleach. most roofs come clean first application. this past week i had a roof that was black, but the shigles were tan. i sat down on the top of the roof and wondered why it didnt come completly clean after two applications of 1:1 bleach. i was frustrated with it but i thought about the problem. after years of the fungus living and dying it had made a carbon build up that was so thick it covered the granules. i had to hit it 3 times to get it clean. you can loose like this because i figured the chem cost in on the bid. turns out i used 3 times more but it was the final lesson on the question of roof mixes.