[Eric 951]

Checking with the brain trust here for some advice. I have a rental house in a congested area of town, which has been getting water in the basement--cleaned/repaired the gutters and downspouts, which helped. We ran an external french drain along the house, which aslo helped, but we were still getting water in the basement--decided the easiest fix was an internal drain.
We dug up an 8" deep x 1' trench along the wall where we were getting the water--after some heavy rains, the trench filled up, with no water on the floor itself, which indicates to us that this will correct the problem of water on the floor, but not of water getting in--which may be impossible due to the congested nature of the neighborhood and the topography of where the house is located(we suspect some of the neighbors' downpouts/roofs are funneling some water to the problem area, but that is neither here nor there.)

So, we are going to gravel the bottom of the trench, put in a drain and run it to a sump pump/bucket to pump out, gravel over the top--check for water, and if this works, cement over the drain leaving a 2-3" gap between the drain and wall for water to run into.

My question is, should we run the standard black flexpipe and if so, should it be the type with the perfroations/slits or without?

Any help appreciated.