1/4 fanfold

docchop1

Well-known member
Apr 15, 2011
61
Southern Indiana
#1
This year I used fan fold 1/4 inch insulation as an underlayment. 30$ for 200 square feet.
http://www.menards.com/main/building-ma ... c-5778.htm
It might provide some small thermal break but I really was only concerned with it's resiliency and making the floor feel absolutely fantastic. It worked and it feels great underfoot.



[attachment=0:vnjbgguy]poolunderlay.jpg[/attachment:vnjbgguy]
 

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docchop1

Well-known member
Apr 15, 2011
61
Southern Indiana
#3
I thought of the folds too but was prepared to just deal with them. Turns out that the weight of the water has compressed the foam to a uniform thickness and I cant find the folds. I used sand last year and it felt ok but imho this feels much better. It has just a little bit of softness and doesn't leave heel and toe divots like sand can. So far so good.