The information on this page was researched and compiled by Historic Denver volunteer and sandstone enthusiast, Diane Travis. She has worked with contractors and the city to repair the flagstone (made out of sandstone) sidewalks in front of her 126-year-old Victorian, located in Denver’s Uptown neighborhood.
See Diane’s flagstone sidewalk slide presentation.
See her list of recommended resources, including contractors and sources of information.
The city of Denver is sending out inspectors to review the condition of sidewalks in central Denver. They will check the condition of the public sidewalk in front of your home. (They will not check the walk leading up to your home, or the paving from the sidewalk to the curb; they are only interested in the public sidewalk.) Inspectors are looking for sloped, broken, uneven or misaligned slabs of sidewalk.
If any portion of your sidewalk is lifted more than ¾” from one slab to the adjacent slab, this is considered a “tripping hazard” and the stones need to be re-leveled. If a slab of stone is shattered into several pieces, it is deemed beyond repair and the slab will need to be replaced.
Note: Flagstones refer to the shape of the stone. Most of the flagstone sidewalks in Denver are made out of sandstone, sourced mainly from Lyons, Colorado.