Obtaining the proper mix design is very important. The quality of your final mix depends heavily on the quality of your materials, and the reliability of your supplier. We recommend that you only use coal tar that meets or exceeds the federal specification ASTMD- 5727. Your supplier should have an on site laboratory for testing to insure that he is within the specification at all times. Should you doubt that your supplier is meeting ASTMD- 5727, obtain a sample of coal tar emulsion and contact Neal Mfg.
We can direct you to a lab that will test the material. The proportions of each element in your mix depends on the mix design you choose to use. Some may choose not to use sand, while some may see the need for liability purposes. Sealer with no sand can be slippery when wet. Without sand you may encounter people slipping, on the parking lot and cars sliding. A good, quality sealer will suspend sand (up to 5 lbs per gallon) without the assistance of latex additive. To insure that the higher sand loads (5-6 lbs) is suspended properly, a latex ineeded.
