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Re: Protective Coatings on Precast Concrete

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Although there may be some exceptions, elastomeric products tend not to work well on vertical surfaces of existing buildings - they tend to peel and don't always adhere well.

It is also difficult to find someone who can do a good job on the application.  

A cementitious coating will have a higher first time cost then either a penetrating sealer or an elastomeric but will last longer.

Gail Kelley, P.E.