I have been making boat and RV cushions for the past couple of years and part of the process is finding sources for the various foam types. Here are a few I am using:
Sailrite -Their 1 1/2" flotation foam is comfortable to sit on and is Coast Guard approved for a flotation device. The 1/2" foam can be used under a 1.8 density dryfast foam if you drill holes in it so the water can drain. The 1.8 density dryfast has a tendency to bottom out and using the flotation foam really helps in the comfort area.
Bestway Foam - They sell a very firm dryfast foam that doesn't bottom out.
Demp Distributing in Denver- They also sell retail. It is worth a trip to see their operation where they take huge buns of foam and cut to whatever size you might want. Very friendly mom and pop staff.
The Foam Factory online They have some of the best prices available on a wide range of foams and free shipping on orders over $75.
Sailrite -Their 1 1/2" flotation foam is comfortable to sit on and is Coast Guard approved for a flotation device. The 1/2" foam can be used under a 1.8 density dryfast foam if you drill holes in it so the water can drain. The 1.8 density dryfast has a tendency to bottom out and using the flotation foam really helps in the comfort area.
Bestway Foam - They sell a very firm dryfast foam that doesn't bottom out.
Demp Distributing in Denver- They also sell retail. It is worth a trip to see their operation where they take huge buns of foam and cut to whatever size you might want. Very friendly mom and pop staff.
The Foam Factory online They have some of the best prices available on a wide range of foams and free shipping on orders over $75.