Why sealing and painting do not eliminate odors

The property you are considering buying has the potential to make you a lot of money. Only he has a major problem, and this problem is why you are able to buy this property at such a bargain. The problem is the smell, the smell left by a crowd of pets.

Should you seal or paint floors and walls to trap odors? Will this solve the problem for you? Unfortunately, the answer is no.

Sealants are designed to prevent stains on walls from spilling and staining new paint applied to a wall. They are not designed to seal or block gases (odors) from escaping or getting through. Some paints, but not most, produce a continuous membrane finish that is not gas permeable. Consider, however, that one of the many sides of an object such as a piece of drywall or flooring is painted, this approach offers limited control of odors and success.

Fire and tobacco smoke are exceptions. But even long-term contamination of walls and ceilings with tobacco smoke can be sealed only after most tobacco tar has been washed away with Trisodium Phosphate (TSP). The smell of remaining tobacco smoke can be eliminated with chlorine dioxide gas. It is a small package of powders that, when exposed to water vapor, produces a gas called chlorine dioxide. This gas oxidizes smoke residues and completely eliminates odors in as little as 24 to 48 hours.

The sealing of urine odors in floors can work on plywood floors, but careful analysis reveals serious flaws. Sealing sheet flooring actually reduces the amount of water and water vapor that reaches the urea salt (produced by the urinary residue), so the salt does not emit mercaptan odor

. However, due to small surface movements caused by occupant traffic and furniture, the sealers will crack and let escape water vapor and mercaptan gas. The cracks are large enough to allow water vapor and mercaptan gas to escape, but they are too small to allow this liquid and liquid water to enter the salt. # 39; urea. In addition, the floorboards have six sides. Sealing one side is not enough to solve the problem.

Using sealants or paint to seal concrete floors is more effective, but most sealants and paint are gas permeable. In addition, scratches and wear points in the sealer or paint will cause the mercaptan to flee again, creating the problem mentioned above.

The floor of heavily contaminated wood and concrete poses another problem. When the urea salt is wet because of water drawn from the wood or concrete, it expands, lifts the sealers and scours the floor. When these blisters burst, the smell comes back.

So, if the seal and the paint do not work, what's going on?

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