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Old 02-01-2018, 09:34 PM   #1
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Quick floor sealing question

Been lurking for a bit, getting into the thick of a 98 BB TC2000 conversion. I pulled the seats and floor, cleaned and treated, put down primer and paint, and last weekend hit the holes with PU sealant. Current state of things:



I also picked up a roll of this and have started covering the sealed holes with 1" squares of it. ~100 square inches in and I'm questioning myself. It's taking forever and making the floor awful lumpy (material is ~1/16" thick) which will complicate things a bit when insulation goes down. Should I scrap the tape and rely on the sealant? Or soldier on, finish as planned, and deal with the lumpyness when insulating. FWIW, insulation plan is 1/2" polyiso between ~4.5" sleepers, then 3/4" subfloor, then vinyl flooring.
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Old 02-01-2018, 09:50 PM   #2
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Originally Posted by gl21133 View Post
Been lurking for a bit, getting into the thick of a 98 BB TC2000 conversion. I pulled the seats and floor, cleaned and treated, put down primer and paint, and last weekend hit the holes with PU sealant. Current state of things:



I also picked up a roll of this and have started covering the sealed holes with 1" squares of it. ~100 square inches in and I'm questioning myself. It's taking forever and making the floor awful lumpy (material is ~1/16" thick) which will complicate things a bit when insulation goes down. Should I scrap the tape and rely on the sealant? Or soldier on, finish as planned, and deal with the lumpyness when insulating. FWIW, insulation plan is 1/2" polyiso between ~4.5" sleepers, then 3/4" subfloor, then vinyl flooring.
The tape won't be a issue...my opinion

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Old 02-01-2018, 10:19 PM   #3
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The tape won't be a issue...my opinion

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So carry on with the taping you think?
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Old 02-01-2018, 10:23 PM   #4
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So carry on with the taping you think?
You can, but I don't think the sealant you put in is subject to any wear, so you might not need the tape.

On the other hand, if you want to add the tape what you don't want is to spend the next 10 years wondering if you should have
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Old 02-01-2018, 10:38 PM   #5
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So carry on with the taping you think?
I say go for it...

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Old 02-01-2018, 11:00 PM   #6
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Most of us believe the insulation will form over any irregularities in the floor. Lots of people have used pennies to cover the holes and they aren't very flat either.
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Old 02-01-2018, 11:44 PM   #7
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Most of us believe the insulation will form over any irregularities in the floor. Lots of people have used pennies to cover the holes and they aren't very flat either.
It's the wood between the insulation that I'm worried about, I was planning on 4.5" strips of plywood with 24" of insulation between, which means 4 boards and 3 insulation pieces across the width. That puts lots of tape pieces under wood. Bonus air gap I suppose?
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Old 02-02-2018, 12:26 AM   #8
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It's the wood between the insulation that I'm worried about, I was planning on 4.5" strips of plywood with 24" of insulation between, which means 4 boards and 3 insulation pieces across the width. That puts lots of tape pieces under wood. Bonus air gap I suppose?
The tape thickness is insignificant...and probably a bit compressible...apply and forget

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Old 02-02-2018, 09:22 AM   #9
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Sounds unanimous. WE TAPE!
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Old 02-17-2018, 04:57 AM   #10
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Quote:
Originally Posted by gl21133 View Post
Been lurking for a bit, getting into the thick of a 98 BB TC2000 conversion. I pulled the seats and floor, cleaned and treated, put down primer and paint, and last weekend hit the holes with PU sealant. Current state of things:



I also picked up a roll of this and have started covering the sealed holes with 1" squares of it. ~100 square inches in and I'm questioning myself. It's taking forever and making the floor awful lumpy (material is ~1/16" thick) which will complicate things a bit when insulation goes down. Should I scrap the tape and rely on the sealant? Or soldier on, finish as planned, and deal with the lumpyness when insulating. FWIW, insulation plan is 1/2" polyiso between ~4.5" sleepers, then 3/4" subfloor, then vinyl flooring.
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The tape thickness is insignificant...and probably a bit compressible...apply and forget

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What happens if you don't cover the holes and just install.the insulation over all of it?

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Old 02-17-2018, 04:59 AM   #11
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What happens if you don't cover the holes and just install.the insulation over all of it?

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And what's pu sealant? What tape? duct tape?

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Old 02-17-2018, 09:16 AM   #12
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What happens if you don't cover the holes and just install.the insulation over all of it?

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Water can get in and get trapped...and every hole invites bugs

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Old 02-17-2018, 11:35 AM   #13
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And what's pu sealant? What tape? duct tape?

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PU, PolyUrethane sealer. Metal duct tape
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