How to Lay Subflooring | This Old House

[Music] you like your engineered lumber i mean you get the benefit of the fact that it is strong that it is straight and true right and you can do a lot with it i mean this is equal to it's actually just a little bit bigger than a conventional 2 by 10. yeah all right it's a little wider and it's a little higher now you think about this as a 3 8 piece of core if this core is higher or the flanges are further apart that means the distance that they can spend is greater okay all right now you have a lot of flexibility with this material you can drill big holes in this for running plumbing we don't worry about that here but we have a floor that we know is going to be straight when we're framing with conventional lumber you take the lumber and you eyeball down here to see if there's a crown in it so you flip it up the right way so the crown always goes up with this material here we don't have to deal with that we know it's straight no matter how we look at it straight we set it in hangers and so as i look over there you can see the hangers going in so uh there's a hanger right here a little different than a traditional hanger yeah this sits on the top of let's say the the beam that we have on the other side that sits on top like that so if you're gonna frame 16 on center you mark it off 16 on center you take the joist hanger just lay it down like that and you'd put it up tight on the top of the beam right here you line it up and these little pieces of steel that stick out like that you tack it down and that holds it on the line here you eyeball it on this side you tack this down there okay so once those two little tabs are in that holds the hanger into position then you would drive some hanger nails or hanger screws in place once you have those fastened to the beam you take your eye joist and you drop it into the hanger now if you notice right here on each side these little clips you'd bang that down hard with a hammer that would snap into place those little clips stop the floor joists from coming up and lessen the squeaking okay all right now we're getting the adhesive on there and we actually have a limited time before we can get this sheet down because the adhesive will skin over now not only putting it on top of the joist but you need to put a little bit of a bead right in the groove of the tongue and groove system because well that does two things it allows the sheets to go together easier but it also stops the floor from squeaking okay all right now we got a good b down here where the two pieces are going to come together and we want to keep a gap at this connection here on the end about an eighth of an inch drop it down put your foot on top so it doesn't bounce up all right let it go all right now we're gonna tap it over to me just to here so we're gonna use a block so we don't damage that groove you're gonna tap it in gently till we get it in tap that right in a little more tap it give it a little go ahead go ahead one more yeah you get about lit just give it one more so you got about a 16 to an eighth inch gap there all right so now you're ready to nail and you see how these marks line up with those joists all the way down so you're going to start on this side here and you're going to nail into those marks right like that all the way down a lot of people don't know that the nail gun won't pull the material down it will just hold it there you want to make sure that the material is tight to the joist so what you want to do is stand on each side of the joist right here pushing down then you nail it working with it if you reach out it won't go tight [Music] how do you feel about that it looks pretty good so stand on each side and nail away [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: 109,449

Rating: 4.9132743 out of 5

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, Cape Ann, Season 41, subfloor, floor, Tom Silva, Kevin O'Connor, 4-6 minutes

Id: kV0oNf4Wj_Y

Length: 4min 25sec (265 seconds)

Published: Sun Sep 27 2020