Dean Designs Co. Inc. specializes in retrofitting and restoring non -reinforced masonry broken or fractured chimneys.  Steel reinforcement of chimneys for seismic activity was not a code requirement until the late 1960's and many non-reinforced chimneys  broke at the roofline during the 1989 Loma Prieta Earthquake.  We have devised a method of  reinforcing these chimneys without tearing them down.   Our process is an engineered and patented procedure where we drill to embed steel and then tie the chimney to the home with attic or rooftop  anchor.  We then fill the void between the chimney and the chimney lining with a polymer concrete mix.  Our process is approved and practiced in approximately 14 cities on the peninsula.

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