Radon In Minnesota Homes
Seal Your Concrete Against Radon: www.radonseal.com
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Radon In Minnesota Homes
Seal Your Concrete Against Radon: www.radonseal.com
Waterproofing A Retaining Wall - Lightweight Concrete Blocks ------------------------------------------ There are many different types of concrete blocks that vary widely among regions and manufacturers. Although RadonSeal can seal almost all concrete blocks, the result cannot be guaranteed across the board because blocks with little Portland cement or with enlarged pores can be quite difficult to seal with RadonSeal alone. Tough to seal blocks include: lightweight blocks or CMU's (much lighter than the 38 lbs. of standard concrete blocks), decorative split face blocks, haydite blocks, dry-pressed blocks, or "popcorn blocks" made with a very course aggregate which have large toothpick-size holes. Try the RadonSeal method below for sealing "unsealable" block walls. RADONSEAL METHOD 1. Apply 4 applications of RadonSeal Plus:http://www.radonseal.com/radonseal-mitigation.htm 2. Hose and lightly scrub the surface of the blocks a 2-3 hours after the 4th applications of RadonSeal Plus (so that there is no residue plugging up the pores on the surface.) 3. Purchase a good-quality plain thinset mortar (without vinyl) available in the tile section of home improvement centers. We recommend Mapei "Keraset Professional Grade Dry-Set Mortar", which is inexpensive (about $20 for a 50-lb. bag), spreads easily, adheres very well, and does not shrink. 4. Wet the surface and apply the mortar on the blocks with a 3/16" notched trowel just like tile adhesive. Then, using the smooth edge of the trowel and holding it at a 45° angle, push the mortar very hard into the surface. The purpose is to push the thinset into the pores. You will end up with basically no layer on the blocks and lots of droppings on the ground. You can finish it off neatly by going over the mortar joints with a round tucking tool and make it look like a brand new block wall. If you prefer the look of a poured concrete wall, leave a smooth layer (say 1/8") on the surface. 4. Let it dry out for at least 4 days then, seal it with our Ion-Bond Armor in two successive applications about 20 minutes apart. Ion-Bond penetrates through the thinset, bonds with RadonSeal inside the blocks, and permanently seals both the blocks and the mortar:http://www.radonseal.com/concrete-sealers/siloxanes.htm
EPA has designated January as National Radon Action Month: http://www.epa.gov/radon/
Radon is an invisible and odorless radioactive gas. Elevated levels of radon have been found in homes all across the country. Any home in any state may have a radon problem: new and old homes, well-sealed and drafty homes, and homes with or without basements. Radon gas gets into all types of buildings, including office buildings and schools.
You and your family receive the greatest radiation dose in your home. That's where you spend most time - 70 to 75 percent, more for small children. The average person receives each year more radiation from radon than from all other natural or man-made sources combined. Over the years, the accumulated radiation exposure may exceed the exposure of uranium miners.
Protect Your Family From Radon