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I filled up (1) 55 gal. drums w/H2O, and 4 boxes of TSP the night before a job. This was Oct.14,2013. Next morning added

 

the rest of mix not realizing the TSP was like a block of ice on the bottom. Has this ever happened to anyone else? 

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TSP needs to be mixed in hot water, let sit over nite and then added to your mix. 55 gals of TSP is quite a lot for roof cleaning. I usually mix about 5 gals of solution into 100 gals of roof mix..

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I filled up (1) 55 gal. drums w/H2O, and 4 boxes of TSP the night before a job. This was Oct.14,2013. Next morning added

 

the rest of mix not realizing the TSP was like a block of ice on the bottom. Has this ever happened to anyone else? 

Next time, use HOT Water, let it sit overnight, stir really good, then add your SH! 

Sometimes, the TSP will not all dissolve, this is expected, and no big deal! 

Just use a filter on the suction of your pump, to avoid sucking in the undissolved TSP Granules.

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garyw,

 

Maybe I worded that wrong. One (55) gallon drum, 40gals of water, 15 gals bleach and 4 boxes of TSP. I hope I said that right.

 

I didn't make 55 gals of TSP. (LOL)  I thought you used hot water in the morning before a job or put in cold water the night before

 

and let set. This was one of the BLACKEST roofs I ever did. 

 

Thanks G

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we use tsp in the asphalt cleaning mix only, cleaning strength is the same, but tsp shines the shingles right up. I didn't pay enough attention to the differences with or without it, once chris mentioned it to me i noticed the end result i was like wooooow.  Use tsp on gray shingles holy crap it looks smashing.  I wouldnt use it on painted tile though, since tsp can etch the paint. 

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we use tsp in the asphalt cleaning mix only, cleaning strength is the same, but tsp shines the shingles right up. I didn't pay enough attention to the differences with or without it, once chris mentioned it to me i noticed the end result i was like wooooow.  Use tsp on gray shingles holy crap it looks smashing.  I wouldnt use it on painted tile though, since tsp can etch the paint. 

Everyone is always looking for an "easier, softer way", and soap/water/SH is easier to use. 

But, TSP has no equal, on the right roofs.

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I agree with Richard and Chris. Asphalt shingles, specifically gray do jump right out you. I did one house with TSP and it really looks clean and bright.

The second house ( same color) without the TSP looks dull. It's clean but it doesn't jump out at you. I use it on all asphalt roofs. Good post

 

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