I have received several estimates to install a concrete driveway roughly 90 feet long by 24 feet wide, and also replace a patio roughly
24 by 24 feet in size.2 of the estimates indicate that control joints will be "saw cut".
The third estimate does not mention saw cuts, but refers to using felt in the expansion joints.
I live in a very harsh climate with temperatures well below freezing for several months in the winter, in the high 80's/low 90's in the summer, and a lot of temperature cycling.
If have seen some driveways and patios with many small cuts, dividing the concrete every few feet, and also many which are only cut every 10 feet or so.
My 2 questions are:
1.Is felt better than saw cutting?- Should the driveway and / or patio have expansion joints every 8 feet, every 4 feet, or how often in order to avoid a lot of weather and other damage?
Thanks very much for any opinions.