Reviews for LP SmartSide are overall very favorable on HomeDepot.com, where 93 percent of customers recommend the product. A small number of reviewers rate their purchase negatively. Positive reviews mention that the home siding product is easy to install, holds paint well and offers a new look at an economical price. Others complain that the product is not durable, does not hold up well with excess rain or moisture, and that it's just average.
As of November 2015, Gardenweb.com, a forum of Houzz, has both positive and negative reviews of LP SmartSide. Buyers point out that the product offers a solid warranty, is reasonably priced and comes highly recommended by many builders. One reviewer notes that it performed well in a series of home tests when submerged in water and exposed to varying temperatures, but that he ultimately purchased a competitor's product. Other consumers similarly note that they considered SmartSide, but purchased alternative products because competitors offered a better warranty and a broader range of finishes.
In the 1990s, LP faced a series of class-action lawsuits connected to premature rotting, molding and discoloring of their siding products. The LP SmartSide product line has since been reworked to address these problems.