Washington Weather Shield will install a new 60-mil GAF TPO roofing system over the existing roof surface including new fanfold insulation flashing components parapet metal scuppers and waterproofing details designed to improve drainage weather protection and overall roof performance. Work also includes heat-welded seams new penetration flashings walk pad protection around the roof hatch and complete removal of project-related debris upon completion.City of Seattle · 2026
Washington Weather Shield will install a new fully adhered GAF 60mil white TPO roofing system over the existing roof. The purpose of this project is to restore the roof's waterproofing integrity improve drainage and ensure long-term performance and energy efficiency. All work will be completed in accordance with GAF manufacturer specifications local building codes and Washington Weather Shield's quality standards.City of Seattle · 2026
SCOPE OF WORK:Remove and properly dispose of two (2) layers of existing roofing materials to fully expose the roof structure.Remove all existing plywood roof decking to allow for installation of new structural decking.Furnish and install new 5/8" CDX plywood roof decking across all roof surfaces to create a clean and structurally sound substrate for the new roofing system. This estimate includes 100 sheets of plywood. Any plywood sheets purchased but not used will be credited back to theCity of Seattle · 2026
We will remove 1 layer of existing torch down roofing install synthetic underlayment tapered EPS insulation 60mil grey Versico TPO roofing membrane new drains roof vents pipe flashings and edge metal.City of Seattle · 2025
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