Without proper drainage under your pavers, you risk damage to your home's foundation as well as to any plants in the vicinity ...
Add 10% to allow for wastage. Joints can be as wide as 1/2-inch. Or you may choose to press the pavers tightly against each other. The pavers will create micro-joints nearly invisible to the eye ...
Weeds have a way of sprouting up through the tiniest of cracks, making it difficult to keep them out of the gaps between ...
Just be careful when pressure washing the joints, as you could dislodge ... and use pressure washers on brick and concrete ...