[MassHistPres] spira-lok

[Marcia Starkey]

Hello, 
The Franklin Co. CDC is gathering information on a product for reattaching granite facade plates thru the joints on the 1929 First National Bank & Trust Co. building in the town center. We would appreciate any experience others have had on the Blok-Lok helical wall tie called Spira-Lok, or other appropraite products. 
thank you, 
Marcia Starkey, Greenfield HC