金山灣區華僑文教服務中心屋頂翻修工程採購內容項目item規格/材料備註1申請屋頂翻修許可Applyre-roofingpermit略向Milpitas市政府申請2清潔屋頂Priortotheplacementofmembraneunderlayment,clearthesubstrateofdebrisandforeignmaterialthatmaybeharmfultotheroofingsystem略面積約21,300平方英呎About21,300SF3填補縫細:屋頂縫細超過1/4英吋,須以適當材料填補Anycrackandgapsgreaterthan1/4",,:GAFMaterialsJohnsManvilleStevensRoofingEquivalentProducts絕緣緊固標準:依照材料商材料使用說明。InsulationFasteningCriteria::以24GAGE的鐵片、最少3吋侧邊扣過女兒牆。鐵片油漆同建築外牆。全部牆以相同方式處理。Flashingdetails:pressionedgewitha3"face(pre-paintedmetaltomatchtheexistingexteriorwallcolor)(24gage):垫高屋頂低窪的地方,保持屋頂流水坡度。RoofdrainageRepair:(含排水道)rationstoberepairedandre-,,installthecricketsintwoareaswheretheexistingroofwaspoorindraindischarge說明圖片4,
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