Sealant for stucco exterior

I am interested in sealing the stucco exterior of my home which currently approximately 80 years old and is porous. I have discussed this with a number of exterior specialists who have provided differing proposals as to the best method of sealing the exterior. These are the different proposals that I received. 1. 2 coats of Thoroseal 2. 2 coats of Thorocoat 3. 1 coat of Thorocoat (on bottom) and 1 coat of Thorolastic (on top) Does anyone have any experience/knowledge as to what the proper treatment/sealant is for my stucco exterior (i.e. What type of sealant should be used? How many coats? Whether the cost of the sealants varies significantly?) Thank you for your help All of the Thoro products are good and proven. They have been specified by architects for years for use on architectural concrete and precast. Thoroseal seal is a great waterproofer for basements. I feel it is far superior to Drylok type products. The claims for the Thoro products seem to be understated and not flashy. All of the materials you mentioned are very similar. I believe the differences are in the additives such as bonding agents. The bond to and become part of the concrete. Thoroseal is the basic product. Often Thorcoat is used as coating on Thoroseal. I am not familiar with the details of Thorolastic. It is interesting that the specialists all recommended similar products from the same company. Check out the Thoroseal site to find the differences between these products. Dick I have always used elastromeric paint to seal stucco. If unpainted - prime with a slightly thinned coat of ext latex and then a full coat of elastromeric. If already painted - skip the prime coat.

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