Specifying manufacturer and installer/applicator experience is an attempt to ensure quality. The assumption is that a manufacturer or installer/applicator with a certain number of years of experience or certain amount of successful installations/applications will do a better job. It probably helps ensure quality.
However, it’s not foolproof and it can be discriminatory.
It’s conceivable that a manufacturer or installer/applicator has had many years of experience doing mediocre or marginal quality work. They’re cheap and keep getting work.
Or, a highly reputable manufacturer or installer/applicator has had an ownership change and does not produce the same quality as that on which their reputation has been built.
Checking the financial status of manufacturers and installers/applicators? That’s a lot of investigative work if it’s done thoroughly and before bidding.
I see in many master specifications typical paragraphs specifying a certain minimum experience level. The text is included in almost all Sections but there’s no guide about how many years of experience are sufficient. Should all manufactures and installers/applicators have three or five or twenty-five years of experience? Does the experience need to be in the same products as specified? What about new products and new technologies? We all can think of examples of manufacturers with decades or experience producing new products that have performed poorly (especially in the roofing industry).
I wonder, how does a new business compete, especially on projects with very competitive pricing requirements? At the same time, why should an Owner and Architect/Engineer take risk on unproven manufacturers and installers/applicators? This is business and not charity, right?
Another caution is putting too much emphasis on experience for one product and then in another Section not specifying any experience requirements. Does that mean the Contractor can use inexperienced manufacturers or installers/applicators unless the spec says otherwise?
I think it comes down to the specifier’s judgment. If the specifier thinks it’s important to specify experience and the consequences are worth the cost and hassle, then do so. If the purpose is to exclude or restrict competition (i.e., copying text from a manufacturer’s self-serving specification), then that’s not a good idea.
Perhaps the focus should be on describing the attributes of the end result and not trying to control those results by prescribing the process (those means, methods, techniques and sequences of construction that the General Conditions of the Contract say are solely the Contractor’s responsibility).
Perhaps much of what is desired to ensure the capability of the manufacturer and installer/applicator can be achieved not by specifying experience but by specifying mock-ups and sample installations.