toilet closet flange

[CheekyMonkeyWrench]

i'm renovating a 1/2 bath, and i had to pull up the subfloor due to improper installation, flex and a high joist.

i would like to cut the pvc toilet pipe so i can get a snug fit around the waste pipe (3" i believe) with the new flooring.

i suppose you should install a new closet flange after the finished floor is down.

do you just install a coupler at the cut and then a 3" piece of pvc and then the flange?

btw, i have access below in the basement, and the riser is fairly long.

[drtyhands]

Depending on the depth of your riser out of the 90,it may be easier to coupling onto the horizontal and put a new 90 and riser.

I love raised foundation homes.a lot of homes in this area are slab on grade.