What Spray Foam Does
Spray foam expands as it is applied to a building surface. The product matters because different foams have different properties and instructions. Your estimate should name the material and identify where it would be installed. That turns a general idea about using foam into a description you can review for your property, including the amount specified and the preparation needed for that particular job.
Think about the space you're trying to insulate before choosing the material. A wall and an attic roofline have different roles in a building, and that affects where insulation belongs. A drawing or a photo can help you follow the recommendation. Ask the estimator to show the proposed area and explain how it connects with the rest of the space, including any equipment or ventilation details that need attention.
Open Cell and Closed Cell
For spray foam insulation in Sarasota, ask the project team to identify the thermal boundary: the part of the building separating the intended conditioned space from the outside or another space. Marking that boundary on the plans makes the location question concrete. It also gives the people discussing ventilation, equipment, and insulation a common reference. A material choice belongs within that building plan, with the relevant design decisions settled before the installation scope is approved.
Open cell and closed cell are different categories of spray foam, with different properties and application requirements. The choice should be based on the proposed assembly and the selected product. Ask why one is being recommended for your space, how much material the specification calls for, and what manufacturer instructions apply. A label by itself leaves too much of the project unexplained.
If you are comparing proposals that specify different foam products, ask each contractor to describe the reason for the choice. The answer should address your building and the application, with the required preparation and related work included in the explanation. Keep both written specifications so you can compare the work rather than trying to compare every foam option from memory.