The use of many products will create a competitive environment and allows the owner the best value possible. Specs need to stipulate performance requirements in regards to traffic flow and level of use and abuse to which the area will be subjected . Volume must also be taken into accounts. Size, color, and style must be written into the specifications. Once you have the codes, styling, and performance issues covered, next are budget and reliability.
Price is almost always a consideration when specs are written.
You must include product lines that fall within budget constraints. Maintenance and service must also be part of the selection process. Not only does the product need to function but the manufacturer's quality, reputation, and warranties must be evaluated. This brings to question the best specification writer for the job. As building requirements become more complicated, the job of specification writing has become more time consuming in a world that has become time intolerant.