Compare the installation packages
Compare fiberglass and acrylic proposals by system construction, not just finish name. Document whether each is one-piece or sectional, how the base is supported and how panels are fastened and joined. Match the plumbing and enclosure scope before comparing installation totals.
Normalize the proposals
Use the same dimensions, fixtures and enclosure features for both options, then isolate the work that differs. Mark demolition, substrate preparation, connections and finish restoration as included or excluded. Ask each contractor to identify the condition that would change the recommended assembly. This exposes a real scope difference instead of treating two product labels as a complete comparison. Where either option requires specialist fabrication, identify who measures and approves those components before ordering.
What is the delivery distinction?
A one-piece unit needs a route large enough for the whole shell; sectional systems arrive in components. Verify the chosen product's dimensions and handling needs before treating access work as identical.
The owner should confirm the proposed service scope and provider availability independently. This guidance does not identify an approved contractor, establish coverage for a specific property or guarantee acceptance of the project.