Resources: Supplier, contractor and repair information for flagstone(PDF, 263KB)
What if I have flagstone sidewalks in need of repair?
Owners of single family residences and duplexes have the option of utilizing the city to 1) mudjack or relevel their flagstone and 2) replace flagstone with concrete. White or red-tinted concrete may be used to blend the concrete in with the flagstone.
Property owners who want to replace damaged flagstone with new flagstone should contact a flagstone company or supplier.
Based on input from experts and analysis by staff, Denver Public Works has adjusted its standards, reducing the thickness requirement for new flagstone from 4 inches to 2.5 inches. Based on discussions with providers, a 2.5 inch flag is more readily available and less expensive, while still providing the necessary strength.
Where appropriate, the ground beneath the flagstone (the subgrade) can be releveled and the intact flagstone put back in place. If a piece of flagstone breaks into more than two pieces upon removal, it cannot be placed back into the sidewalk.
Owners of multi-family and commercial properties will need to hire their own contractor to relevel flagstone, replace flagstone with concrete, or replace damaged flagstone with new flagstone.