Best Mortar for a Stone Patio: Type N vs Type S
A stone patio should feel solid, not crunchy, cracked, or wobbly. Yet around Huntsville, I keep seeing the same story: the joints look fine at first, then they split, turn sandy, and the stones start to rock. Next, someone says, “Use stronger mortar.” However, that move often backfires. The wrong mortar can crack faster and even chip stone edges, especially after wet weeks and a quick freeze. First, make sure you’re fixing the right kind of patio Before you pick a mortar, look at your joints up close. If your joints feel hard like cement, you likely have a mortar-set patio. In that case, Type N vs Type S matters. On the other hand, if the joint looks grainy like sand (and weeds pop up easily), your patio may use sand or polymeric sand. Then mortar won’t solve the core issue. Instead, you’ll want the right joint sand and proper joint depth. That quick check saves you from patching a system that doesn’t even use mortar. Three fast tests that tell you what’s failing You don’t need fancy ...