Jul 11, 2010 0
Basement Concrete Flooring – How To Seal It
Basement floors that are made of concrete have a high chance of being corrupted by moisture. It’s because of the water in liquid or vaporous form that enters into the basement through floor resulting in mold, mildew and the accompanied unpleasant odor. Paint can’t remain in good state in humid conditions and gets peeled off or causes blisters to appear in a matter of time. As a consequence, any kind of carpeting on such floors is bound to collect moisture and get damaged in the process. But, there are ways to seal a basement floor against moisture and gas leakages.
Sodium Silicate Vapor Impermeable Concrete Sealers
It is best to use a sealer with sodium silicate for such applications, as it is impervious to vapors emanating from the interior of a concrete floor. These sealers prove to be better than surface film sealers as the latter still allow water and its vapors to penetrate thru the concrete. Water in vaporous form gets collected beneath the surface of the sealer and as the pressure continues to builds up, blisters begin to appear.
Sodium silicate penetrating sealer works better as it is capable of penetrating thru the concrete up to a depth of four inches. On entering the concrete it reacts with free elements of concrete to give a crystalline structure and seals the microscopic pores on the concrete floor. The concrete gets dense and hardened on curing. That keeps water and its vapors on the exteriors of concrete and can be wiped off or it gets evaporated on its own if there is no covering on the floor.

Gas and Vapor Transmission
When the microscopic pores of the concrete get filled, gas and vapors are unable to penetrate thru the concrete. They can no more migrate from the surrounding soil to the basement area.
Stops Efflorescence
You would have observed a chalky white material appearing on the basement floor. This is known as efflorescence. This is formed as solid salts leash out of the concrete and getting deposited on the surface of the concreter after water gets evaporated. Though a normal process, the application of penetrating concrete sealer stops it altogether.
Advantages of using Penetrating Sodium Silicate Vapor Impermeable Concrete Sealer
* Puts an end to water vapor transmission
* Eliminates water seepage
* Reduces gas and vapor migration
* Makes the surface paint worthy
* Doesn’t cause any change to appearance
* Concrete becomes hardened
Easy Application
Concrete sealers offer the easiest of application and can be applied by just using a brush or roller. However, many people prefer to do it with a pump up garden spray with a flat fan pattern spray tip. That way you get the most even coating of materials. However, you need to make sure that the basement floor is thoroughly clean and dry, devoid of any oils or grease prior to its application.










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