If you're willing to work lengthy hours in tough climates on a slippery slope, then a profession in the construction trade could be for you. Advantages of membership include legislative advocacy, newsletters, industry and regulatory info, and links to different California roofing contractors. For the everyday American home, the roof amounts to about a third of the noticeable space of your property when seen by a passerby from the street. There are various things to consider when selecting a roof construction materials.