The easiest way to deal with this problem is, of course, to prevent it. By using a concrete sealer proactively, you can prevent the blocks from seeping water which can lead to extreme damage. While it is better to apply the concrete sealer as soon as possible, you can also apply it later, though you have to be sure that you properly clean the slab and remove all paint before beginning the application process.
If your basement is made up of concrete blocks, it would be best to use Siloxa-Tek 8500. Siloxa-Tek 8500 is a silane/siloxane solution that will penetrate within the concrete while simultaneously protecting the surface of the concrete with an invisible hydrophobic barrier. This dual protection will help prevent water from penetrating, all while locking out moisture and vapor from the pores and hairline cracks present within the concrete.
Siloxa-Tek 8500 is an industrial grade water-based solution offering comprehensive protection with two coats, drying within a day and providing up to 250 square feet of sealer for every gallon. This multifunctional sealer not only protects concrete blocks but also a wide variety of mineral substrates including architectural concrete, concrete block, splitface block, pavers, stucco, porous and dense brick, clay tile, exposed aggregate concrete, sandstone, and slate. This unique formula incorporates leading molecular nanotechnology; putting a permanent end to water and moisture migration through even the most porous concrete blocks.
