Warranty service work is needed at some point on virtually every new house. The imperfections of materials and people inevitably create the need. The hundreds of different materials that make up a house don't always respond as they were designed, sometimes causing undesirable results. The human beings that build homes bring different abilities and attitudes to their work, occasionally creating unacceptable quality. Dealers, manufacturers, and general contractors work hard to prevent quality problems and avoid mistakes, but they also have created a mechanism to address them. That is the function of modular warranty service.