What are the pros and cons of interlocking?

PROS:

• Interlocking is a rigid surface that remains flexible and allows disbursement of heavy loads.
• It provides the strength of poured concrete without the problem of cracking.
• It has many design options.
• It is aesthetically appealing.

CONS:

• It is a more costly option.
• Weed and moss maintenance are required.
• There is shifting due to subsoil movement.