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Old 05-30-2017, 08:01 PM   #21
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Name: mary
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so it would be from bottom to top:
fiberglass, plywood, foam, plywood, vinyl.
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Old 05-30-2017, 08:19 PM   #22
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Since I've already purchased and installed and when I say installed I mean interlock the pieces and cut to fit, does it matter if I just leave the plywood in, have the foam and can I add another piece of plywood, if so how thick, and then proceed with my vinyl?
You can add more plywood but: it adds weight and reduces your head space.
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Old 05-30-2017, 08:21 PM   #23
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Since I've already purchased and installed and when I say installed I mean interlock the pieces and cut to fit, does it matter if I just leave the plywood in, have the foam and can I add another piece of plywood, if so how thick, and then proceed with my vinyl?
If you want to keep the plywood and foam already installed, then you could add a very thin plywood subfloor (as thin as you can find) then add vinyl.
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Old 05-30-2017, 08:23 PM   #24
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and would I just secure by screwing some sort of trim around the edges?
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Old 05-30-2017, 08:46 PM   #25
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and would I just secure by screwing some sort of trim around the edges?
Good question, but i would secure it well with screws or glue otherwise your the plywood will move and the vinyl will not stay together properly Cut round holes in the foam (the diameter of the washers) where you want to screw down the plywood. Stack washers (or another spacer of some kind) the thickness of the foam, then screw down. This will prevent compressing the foam.
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Old 05-30-2017, 08:49 PM   #26
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Good question, but i would secure it well with screws or glue otherwise your the plywood will move and the vinyl will not stay together properly Cut round holes in the foam (the diameter of the washers) where you want to screw down the plywood. Stack washers (or another spacer of some kind) the thickness of the foam, then screw down. This will prevent compressing the foam.
Countersink the screws so they do not protrude. Then fill screw head with filler. Then install vinyl.
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Old 05-30-2017, 08:55 PM   #27
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Great Tip! When you screwed down your plywood after using the reflectix did you need to add spacers of any kind or was it thin enough not to require them?
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Old 05-30-2017, 10:16 PM   #28
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Great Tip! When you screwed down your plywood after using the reflectix did you need to add spacers of any kind or was it thin enough not to require them?
It was thin enough no spacers required.
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Old 05-30-2017, 10:16 PM   #29
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It was thin enough no spacers required.
Good luck email anytime about anything
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Old 05-31-2017, 03:55 AM   #30
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I have learned in the 30+ years in the building trades that the only way that insulation works efficiently is not to compress it. The air spaces in the product, no mater what it is, foam, fiberglass (Pink Stuff) or bubbles, is the insulateing factor and makes it work.
I think if the 1/2 inch thick foam pads are used, one would have to support the plywood with 1/2 inch spacers, to allow the insulateing air bubbles in the foam to work. If compressed...it wouldn't be any more then putting a sheet of rubber down for insulation.
I have insulated water-lines in a campground, New Hampshire, that were only down 15 inches with just straw. The trick is to fluff this straw up over it to allow air-space...
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