Qualified RadonSeal contractors are available in many areas. RadonSeal Standard Normal strength for dry poured concrete in good condition. For basements or slabs, garages, driveways, pools, outdoor concrete. RadonSeal Plus Higher mineral content for larger pores. For cement blocks, cinderblocks, and porous, older, or wet poured concrete, or active water seepage.
Coverage depends on the concrete's porosity and composition.
Three spray applications are required on concrete blocks and for more difficult concrete, moisture, or radon problems. The typical basement needs two pails, or 2-3 pails in case of concrete block walls. Ordering and Shipping Options Orders are normally shipped the same or the next working day. For shipping express or to other states and countries, please e-mail or telephone us first. If you prefer to mail, fax, or e-mail your order, or use a money order or check, complete the Order Form .