Dave, I use the Ninja and purchased a 1600 psi pressure washer for the needed pressure. I like this system because it is quick, efficent and gets outstanding results providing there are not excessive permanent stains, or old grout.
If I remember correctly, We all have signed contracts with corporate that said: We will use only there equipment and supplies!!!!!!!!!!!!!! Kind of like Mcdonalds, with using only there food products.
Realize, and you will when you start scrubbing the grout, that it is a loooootttttttt more work than carpet. Go with .50 to .85 cents psf. We are researching other competitors prices and the average is .70 cents psf. You will probably come to find that not many companies provide this service. Not where I am at anyways.
Mike, Does your price of .70 cents a sq ft include a sealer ? We charge
.75 cents to clean Only. Sealer is an additional charge of.25 to .50 a sq foot.
I would go .85 to 1.00 for the inclusion of the sealer. Call other cleaners in your area and you will get an idea. Just don’t make it obvious what you do.