Patching in-between foundation block?

[deerminator]

On the exterior of our house, some of the cement inbetween the blocks has popped out. Should I plug it up with good old regular cement? I have a bag of fast setting post cement out in the garage or would I be better off going with some sort of patching compound. This is the first time I've had to do "masonry" work.

[Hoey]

The procedure is referred to as "tuck pointing." Clean all the loose mortar from the joint(s). Get yourself a bag of $4/80lbs block/brick mortar, not concrete mix with large gravel/stones. Get a small vee-shaped trowel for mixing and holding the mortar and a tuck point trowel (6 to 8 inches long and 1/2 inch wide) for pushing the mortor off the other trowel into the joint.

Fill the void joint and pack it in. You can use a joint finishing trowel or a dowel rod or other rounded device to smooth the new joint out. Clean any slops or spills with a stiff brush and water.

Hope this helps. Just did this to my place last week.