March 16, 2011
Waterproofing is the method of absolutely preventing water from entering a basement or crawlspace, and must be done from the exterior of the structure. Interior drainage systems should not be confused with waterproofing. Sealing a wall on the inside alone traps water within the wall and actually speeds up the deterioration of the wall. Exterior waterproofing entails digging to the footer, replacing footer drain tiles and applying a waterproof seal on the foundation. The important difference is in the materials used to waterproof the walls. Many companies are using the same sealant that was being used twenty years ago… tar. Applying tar is not waterproofing, it is damp proofing. Tar cannot expand and bridge future cracking. Very quickly tar loses its elasticity and cracks. With the seal compromised, the whole process of dampness leading to water penetration and structural deterioration begins anew. Waterproofing must also be accompanied by proper pressure relief foundation drainage or it is destined to fail, and not all foundation drainage systems are equal, especially interior systems. Give us a call and we can explain the differences in the systems available today and leave you with a clear understanding of what is best for you.
For more information on why exterior waterproofing is the only solution, please visit www.nvbws.com. If you have a waterproofing need, please contact NoVa Barrier Waterproofing Systems at 703-866-0535.
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