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marshmallow

INSULATING FISH HOUSE FLOOR??

9 posts in this topic

I PICKED UP AN 8x8 PERM. FISH HOUSE THIS FALL.. I NEED TO FABRICATE A NEW FLOOR.. I ALREADY PURCHASED 2 "1/2" SHEETS OF PLYWOOD.. NEED A FEW IDEAS ON EASIEST WAY TO INSULATE THE FLOOR IF I DECIDE TO.. IT WILL BE CARPETED LOW PILE TYPE.. THANK YOU..

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Basically you build the floor like you normally would. Then you frame it in like a wall sort of. I would just say 24" centers on the studs for support of the upper layer of the floor. fill in the open spaces with the pink foam. Then add a top layer of plywood on top. Kink of like a sandwich so to speak. I strongly recommend treated plywood, and 3/4".

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A friend of mine put the 3/4" floor down as normal, then glued pink insulation under the floor between the frame spaces (w/PLl400). He has run this for about 2 years w/no problems so far. You wanted easy.

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We glued the pink insulation under the floor last year, and it helped keep the floor warm and did not fall off.

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After gluing the pink foam to the bottom of the floor use a can of expanding foam to fill in any gaps and you'll be toasty.

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I would recommend using some Mechanical fasteners as well as glue. I used glue on mine, but the foam pulled away and the glue held. I put some thin strips of wood and screwed them into 3/4 plywood in addition to glue. Large plastic washers may work as well. It is a little extra work, but you won't loose your insulation going down the road. The wood sandwich seems like it is the best, but it would not work on my house.

Good Luck!!!

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marshmallow, When I built my house I wanted the warmest floor I could get. On the top of my frame, I put 1/2" treated ply, the bottom side is coated with mobile home roof sealant (silver),prior to installation. Then I PL300 1 1/2" Pink Foam and PL300 that together. On top of that, I have another layer (different direction)of 1/2" treated and sealed plywood and then indoor/outdoor carpet. My house is also a 6.5'X16' toy-hauler so the floor DOES get wet, the furnace does a good job of drying it out and I generally fish wearing my slippers. Start with a good foundation, and go from there. Phred52

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I would frame in the floor with 2 x 4's but lay them flat then 1 1/2 thick foam works well. I would also frame around the holes and save the pieces you cut out for covers. The underneath side definately needs to be treated. 1/2 or even 7/16 is thick enough. You may want to give some thought to what you are going to use for skids before starting. It will be very warm.

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