A flagstone patio will always look amazing, but installing one can be an investment. In this expert-approved guide, we're breaking down everything you need to know about how to design a flagstone ...

The future plan is to bring in fill to correct some of these leveling issues. Normally one would dig out soil, then add a crushed stone base to create a flagstone patio.

4. To fill between the joints use polymeric joint sand. You want to be sure you get a type that is suitable for larger joints (as opposed to small paver joints of 1/4" or less).

After several days, you can fill the joints with grout or with sand to match the rest of your extended patio. Make some forms with two-by-fours around the perimeter of the new extended area.

Pry out the loose parts and fill in the holes with sand-topping mix. ... Two sides of our house are surrounded by large flagstone patios, probably 20 to 30 years old and maybe even older.

A Denver area carpentry client of mine was looking at a replacing an old deck. Years and years of weather and a slack maintenance plan had put this deck into a state of ugliness and decay. Its ...