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Old 12-03-2007, 07:10 PM   #21
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Re: Subflooring question!

I think the long screws through the insulation and all are probably fine. I just get paranoid about putting them in shear like that should they take any sort of load. I think I've just had a few too many screws break on me in the past.

If nothing else I think a guy could just put furring strips where he intends to build the walls. Sure, it's a little more cutting on the insulation, but that really isn't that big of a deal.

I should note too that I put furring strips under where my couch sits in addition to the regular grid work. If I move the couch off those points I can tell that the floor is flexing with just the plywood and insulation under it. Just some food for thought.
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Old 12-03-2007, 09:37 PM   #22
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Re: Subflooring question!

when we pulled the floor out of our bus it was carpet on top of the silver insulation blanket on top of tar paper on top of 1x8 cedar on top of more tar paper the 1x6 was screwed to the steel floor my thought was to lay down the felt vapor barrier that is used when installing laminate flooring on top of concrete then screwing half inch plywood down. the origional idea was a hidden mess!
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Old 12-03-2007, 10:38 PM   #23
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Re: Subflooring question!

BAH! I can't make up my mind. I think what I'm going to do now, is get the 3/4" pink insulation. The white stuff is only a few cents cheaper per sheet, and doesn't look as good. I'm also going to use some 1x2" firring strips. They are 3/4" like somebody else said. I even compared the strips to the insulation and they are exactly the same. I'm not sure how much support the sub flooring will need from the firring strips. The firring strips are 99 cents each. I figure that 25 of them ought to do it. What do you guys think about my LATEST plan?
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Old 12-04-2007, 01:29 AM   #24
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Re: Subflooring question!

Okay, I've been thinking about it! Tomorrow, I'm going to buy 7 sheets of that 3/4" pink insulation. That's enough to do my whole bus. I'm going to get a bunch of firring strips too! I think I'm going to skip the felt paper. Instead, I might lay down a little spray glue on the floor and hopefully, that will help with any squeaking. I have several cans already.
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Old 12-04-2007, 03:46 PM   #25
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Re: Subflooring question!

Well, I went to Home Depot today and picked up the 3/4" pink insulation, and about 25ea 1x2" firring strips! I looked at the 1x4" firring strips, but they all looked really bad. I might go to Lowe's later and see if I can find some. The only place I really want to use the 1x4's are where the sub flooring pieces will butt up against each other. I am also planning to pre-drill the wood and metal, and then re-drill the wood so that the screws hold the wood down to the floor. I'm sure it's going to be a bigger pain in the butt than I'm anticipating. I'm going to lay firring strips down first and then put the insulation in between. Then lay my sub-flooring on top. I am figuring that by the time my floor is totally done, I will have added about 1-3/8" to it. I'll still have a couple inches over the top of my head.
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Old 12-04-2007, 09:30 PM   #26
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Re: Subflooring question!

that sounds like it will come out nice pink is much better than white are you using half inch plywood? which way are the plywood joints to be? a good day and a dozen!
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Old 12-05-2007, 12:56 AM   #27
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Re: Subflooring question!

Quote:
Originally Posted by timbuk
that sounds like it will come out nice pink is much better than white are you using half inch plywood? which way are the plywood joints to be? a good day and a dozen!
The firring strips and the pink insulation are 3/4" thick. The sub-flooring sheets are 7/16" thick. I am laying them side to side with the joint running perpendicular to the length of the bus. Basically, I'll just cut my 96" long sheets down to 92" and lay them in there. Actually, I think it's 91.5", but I'll measure it again when I get ready to start cutting.
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Old 12-05-2007, 10:05 AM   #28
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Re: Subflooring question!

Wow! Your bus was 92" wide. I am jealous. Mine is 86". Mine is short on hight and thin. At least it is long.

Your floor is going to be very good.
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Old 12-05-2007, 02:54 PM   #29
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Re: Subflooring question!

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Wow! Your bus was 92" wide. I am jealous. Mine is 86". Mine is short on hight and thin. At least it is long.

Your floor is going to be very good.
Yeah, mine is long AND I have girth!
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Old 12-06-2007, 05:14 PM   #30
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Re: Subflooring question!

Man, this flooring is really kicking my butt. I'm trying to attach the firring strips to the floor. I'm laying the firring strip in place and drilling through the wood and metal flooring. I then redrill the wood so the screw falls through the wood, but not the metal. I'm using some drywall screws that are meant to screw into metal studs. But I keep breaking drill bits! ARGH! I've broken a few screws too. Maybe I should be using some TEK screws? I'm guessing that I could get them to sink into the wood far enough that they wouldn't stick up. What do you guys think?
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