Roof Coating Renovation

2026-11-03

• Prep old / existing roof as needed and install foam and silicone roof application . • Remove and / or vacuum rock and ballast off roof and prep for foam . This step will need to be done during off hours for the school . Evenings , weekends , etc . • Power wash existing membrane to remove all loose debris as needed • It is assumed that the existing steel roof decking is generally in serviceable condition and suitable to receive the new roofing system . Minor areas of deteriorated decking may exist . • Removal and replacement of roof decking is not included in the base bid . • Provide a unit price per square foot for removal and replacement of deteriorated steel roof decking discovered during ballast removal and roof prep . • Contractor shall field verify existing deck type , depth , gauge , and structural conditions prior to ordering replacement materials . • Replacement decking shall be of equal or greater current structural capacity and shall comply with applicable building code requirements . • Unit price shall include removal and disposal of existing deck , temporary weather protection , furnishing and installation of new deck , fastening to existing structural framing , cutting and fitting at penetrations , and full coordination and integration with the new roofing system . • For purposes of unit price compensation , deteriorated roof decking shall be defined as decking exhibiting excessive corrosion , perforation , structural deformation , or other conditions resulting in a reduction of structural load - carrying capacity . Surface oxidation , minor rusting , staining , or cosmetic corrosion that does not impair structural performance shall not be considered deteriorated decking and shall not qualify for replacement under the unit price . • Contractor shall notify BAPS immediately upon discovery of deteriorated decking . Final quantity of roof decking and proposed materials must be inspected and approved by BAPS prior to installation . BAPS will approve the final quantities installed and replaced and these findings will be used to determine any necessary change orders . • Apply one and a half inch ( 1 ½ ”) of VFI or equivalent product type , closed cell polyurethane foam per factory specifications to entire roof area . • Apply 32 mils of one of the following silicone systems to entire surface area of foam : ( A ) VFI Sealguard 990 white silicone , ( B ) GacoFlex S20 series silicone coating , or ( C ) Everfoam silicone / SPF renovation system . Contractor shall specify which product will be used in the bid . Note : Consideration of alternative product types must be preapproved prior to bid opening and shall be accompanied by manufacturer specifications . • Broadcast silicone granules into top coating at 25 lbs per square . • Avoid spraying gas lines , conduit and AC drain lines . Special care to seal and coat around all penetrations , pitch pans and edge treatments • Apply roofing materials only when ambient temperatures are above 60 degrees and below 110 degrees , or as otherwise recommended by the manufacturer .

Oklahoma

2026-04-08