How to Install a Perimeter Drain | This Old House

[Music] before we get to the framing kevin we got to do the uh exterior perimeter drain the insulation and the backfill all right well let's get to that yep after we took the forms off we waterproofed this that's that black coating right there right we're gonna get a lot of water in this area with all the ledge we took out right so the last thing we want is to get the basement be wet i mean you're gonna have a lot of water running off of the roof during a rainstorm but like you say this ledge i mean you guys basically dug yourself a swimming pool we did we did so we have to take extra precautions to make sure we don't have a wet basement so waterproofing on the foundation i see that i see a pipe here so this is the perimeter drain we're working on yeah it's a perforated pipe it's got holes all the way around it okay and what's the formula here the recipe so basically we lay down a bed of crush stone we lay that pipe on top on top of that pipe we put some more crushed stone and landscape fabric so when we backfill that dirt doesn't clog those holes beautiful so we got a nice clear channel for the water to run into the pipe obviously you got to get it away where does it go well the grating we have on this property we're able to run it to daylight that that end of that drain is going to be 20 to 30 feet past this foundation so can we finish laying this yeah let's do it all right so kevin we're going to have some stone drop down into this foundation we're going to spread it around and get that pipe blade out sounds good i'm gonna drop this right here let's back off a little bit so what do we got like three four inches of stone on the bottom here yeah roughly three or four we just want to keep that water and give it a good place to go four inch pipe yep perforated all the way around i'm just gonna bring it right around the corner yep just roll this right out through here gravel below and on top of the pipe allows for easy access for the water to enter through the perforated holes gravity will then take the water around to the back of the house looks like we're ready for the next bucket got enough around that corner yeah this is good here let's spread this stone kevin and then i can have you go get some insulation we can start installing that all right we're ready for installation [Music] all right so rigid boards they're just going to lay them in there you got to secure them or anything just going to lay them in there the back fill is going to hold them in place and what are you getting for an r value off of these so these are r10 they're rigid insulated panels nice code requires us to have a certain insulation for the concrete concrete makes up for some and then we put the pink r10 one layer on the outside before backfilling get you some more [Music] take that other one for me got it [Music] you want this one in you want to cut first let's hold off on that one we'll lay the fabric down now all right we want to grab that end of the landscape fabric we'll lay this down over the pipe so the reason we're laying this fabric down is when we go to backfill we want to make sure none of the dirt or anything clogs up these holes that we've got down here in our perimeter drain so we're going to lay this down prior to backfill so we'll get proper drainage when this all gets filled in nice [Music] kevin it looks like we're all set here we're ready to backfill all right [Music] [Applause] kevin as you can see we've taken out two areas here in the footing that we've run that perimeter drain through right so that gets us through that and we get it what 10 15 feet away from the main foundation it's not the daylight yet but this is far enough so you can keep working yeah we'll determine the length on this when we come up with final grading but we're ready to go on this garage foundation [Music] thanks for watching this whole house has got a video for just about every home improvement project so be sure to check out the others and if you like what you see click on the subscribe button make sure that you get our newest videos right in your feed

Channel: This Old House

Views: 163,720

Keywords: This Old House, Ask This Old House, DIY, Home Improvement, DIY Ideas, Renovation, Renovation Ideas, How To Fix, How To Install, How To Build, Kevin O'Connor, foundation, drainage

Id: QKEenuoYFDQ

Length: 5min 7sec (307 seconds)

Published: Mon Mar 22 2021