The vast majority of faculty applications I've made explicitly require the candidate to submit both a research statement and a teaching statement, and the institution usually describes the expected length and topics to be covered. However, a few institutions don't ask for any such statements, even though the position is described as one that involves both research and teaching. That is, neither the job posting itself, nor the application instructions accompanying the online form, make any mention whatsoever of a research or teaching statement, even though they may specifically enumerate other documents to be submitted (cover letter, CV, list of references, writing samples, etc.). In such cases, the application form usually does allow one to submit one or more arbitrary attachments, so it would certainly be possible to submit research and teaching statements. My question is, should I use this functionality to submit research and teaching statements? Or does the conspicuous absence of a research/teaching statement requirement in the application instructions mean that the search committee doesn't want them at this stage in the application process? (For all I know, they prefer to get a brief overview of the candidate's research and teaching qualifications from the cover letter and CV, and then ask for further details if the candidate makes it to an interview.)
I usually spend a lot of time customizing my statements (by mentioning how I'd fit or expand the institution's research profile, opportunities for collaboration with local colleagues, which existing courses I could teach, how I could further develop the curriculum, etc.) but I don't want to do all this if the statements are going to be ignored. Conversely, if any statements I submit are going to be read, then I don't want to submit generic ones for fear that I'd come across as lazy, uninformed, or taking a shotgun approach to applications.
For further context, all of the positions I've had this dilemma with have been at UK universities (and relatively highly ranked ones at that).
Also, I understand that the best course of action for any given case may be to write to the contact person listed on the job ad, though I'm still interested in hearing from the Academia SE community whether these sorts of postings really don't want research/teaching statements, and what happens to any statements that get submitted anyway.