Request for Proposals (RFP): Town Hall Basement Waterproofing, Encapsulating, Air Sealing, and Insulating

The Town of Londonderry is seeking proposals from qualified contractors to waterproof, encapsulate, insulate, and air seal the basement of the Londonderry Town Hall. The project involves installing a vapor barrier, spray foaming the rim joists and crawlspace walls, and replacing the basement hatch door. The selected contractor will be responsible for completing the work by September 30th, 2026. The proposal should include a detailed cost estimate, information on materials and equipment, and a schedule for project work. • The project requires the implementation of a waterproofing system to manage semi-consistent water entry into the basement and address humidity concerns. • The contractor will be responsible for assisting the Town in accessing available incentives for thermal envelope work. • The proposal should include information on the contractor's experience and reputation, including past performance for the Town of Londonderry. • The Town reserves the right to hire an independent third-party to conduct a post-construction blower door test to verify that basement thermal envelope improvements resulted in measurable reductions in air leakage.