We have purchased a house which has a pool about 20 years old. The area around the pool is covered with concrete with joints that are about 1 inch wide and 5 inches deep. Originally there was wood inbetween with a sikaflex top. The wood has long rotted and needs to be replaced.
We cleaned the joints out and were looking for something to fill the joint area.
A silly question why not use mortor cement with a sikaflex seal on top? The cement has cured and the mortor will last a very long time? Articles I read talk about polyuretha etc because the concrete has not cured but the concrete is 20+ years old and not moving. The heat/cold contraction appears to be very mimimal.
Philip.