Not everything in your new remodel or new home construction has to be a complicated decision. Some solutions are so easy and give such great benefits. If building with concrete block, you can increase the warmth and comfort of your new home very easily by specifying the addition of expanded polystyrene foam insulation blocks. The foam blocks are designed to fit easily into the cavities of the concrete block to increase the R-value (the measure of insulation) by up to 12 times. An easy, low-cost, lightweight solution to make your home warmer and more economical to heat.