I'm repairing a three season room. I took it down to the studs, put in new sill plates and sliding glass doors.
For the sill I put down Protecto wrap, latex caulk, a pressure treated 2x4 and secured to the pad with tap con concrete screws. I used a latex caulk on the outside of the 2x4 after it was secured.
Water is getting through during heavy rain in two places. It appears to come from under the sill, at the center post and the door on the right.
The latex caulk appears to be cracked.
There's no gutter so all the rain water ends up at the edge of the pad. But it is on a hill so the water should be draining away fairly quickly.
I still have to put the bottom trim on, under the door frame, in front of the sill.
Should I make sure there are no leaks before putting the trim on? Or, will the trim make it water tight?
With the latex caulk cracked, can I go over it with a silicone all weather caulk?