CONCRETE PILES are standard for the EXCELLENCE and PRESTIGE packages. The benefit of concrete piles is they support your pool wall and help prevent sinking and heaving over the next several decades. Manitoba goes through tough winters and the freeze-thaw cycle upheaves fences, sidewalks, pools and even houses! Piles can cost as much as $5000 extra, but we've included them and they are one of the best features in the EXCELLENCE and PRESTIGE packages!