Start with the building problem
Before choosing foam type or thickness, identify the reason for the work: cold rooms, drafts, condensation, high energy bills, shop comfort, code requirements, noise, moisture control, or a remodel schedule.
Ask for specific scope notes
A useful quote should explain foam type, approximate depth, prep work, masking, removal of old material, ventilation, curing/re-entry guidance, ignition-barrier considerations, and whether any moisture or ventilation corrections are needed first.
Use related pages to narrow the request
The strongest requests link the main problem to a specific area such as attic, crawl space, rim joist, metal building, garage, shop, pole barn, or commercial space.