{"product_id":"rpi-water-cut-off-mastic-10-3-oz-tube-one-part-butyl-compression-sealant-gray","title":"RPI Water Cut Off Mastic 10.3 oz Tube, One-Part Butyl Compression Sealant, Gray","description":"\u003ch1\u003eRPI Water Cut Off Mastic 10.3 oz Tube, One-Part Butyl Compression Sealant, Gray\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eRPI Water Cut Off Mastic is a weather-resistant, one-part butyl sealant supplied in a 10.3 oz gray tube and designed to act as a compression gasket. It is used with pipe boots, termination bars and drain clamping rings per RPI specifications. It is not designed to be used as an exposed caulk.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eButyl based:\u003c\/strong\u003e A one-part butyl-based sealant formulated as a weather-resistant compression gasket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompression sealing:\u003c\/strong\u003e Functions as a compression sealant with pipe boots, termination bars, drain clamping rings and other details required by RPI specifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeather resistant:\u003c\/strong\u003e Formulated to resist weather exposure in concealed roofing details.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrade-sized tube:\u003c\/strong\u003e Comes in a 10.3 oz tube suited to cartridge application on roofing details.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot exposed caulk:\u003c\/strong\u003e Cut-off mastic is not designed to be used as an exposed caulk.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eSpecifications Table:\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRPI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSell unit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 tube, 10.3 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRPI roof system accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable colors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGray\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10.3 oz tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOne-part butyl-based sealant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish \/ texture\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGray mastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntended use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCompression gasket sealant for pipe boots, termination bars, drain clamping rings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLimitations\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot designed for use as an exposed caulk\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eIntended for use with RPI-specified roof system details such as pipe boots, termination bars and drain clamping rings. RPI Night Seal is the companion product for sealing temporary tie-ins between new roof covers and existing roof systems.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is included?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e One 10.3 oz tube of gray RPI Water Cut Off Mastic, sold per tube.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Where is it used?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e As a compression sealant with pipe boots, termination bars, drain clamping rings and other details required by RPI specifications.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I leave it exposed on the roof?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, the manufacturer states cut-off mastic is not designed to be used as an exposed caulk; keep it in compression within the detail.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What type of sealant is it?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It is a weather-resistant, one-part butyl-based sealant designed to work as a compression gasket.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What should I use for temporary tie-ins?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e RPI Night Seal is designed as a quick, reliable sealer at temporary tie-in locations between new and existing roof systems.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eUse this butyl mastic only in compressed, concealed details such as under termination bars or around clamping rings, and choose a face-seal product where a fillet must remain exposed. Apply to clean, dry substrates and bed the detail firmly so the butyl can function as a gasket. Keep tubes sealed until use so the material stays workable.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eReview the product safety information before use and apply in well-ventilated conditions with appropriate personal protection.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eStock RPI Water Cut Off Mastic for dependable compression sealing on pipe boots, termination bars and drain details.\u003c\/strong\u003e\u003c\/p\u003e","brand":"RPI","offers":[{"title":"Default Title","offer_id":53524002308463,"sku":"RPIWCT","price":10.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/ProductImage_RPIWCT.jpg?v=1790270256","url":"https:\/\/superarbor.io\/products\/rpi-water-cut-off-mastic-10-3-oz-tube-one-part-butyl-compression-sealant-gray","provider":"Super Arbor","version":"1.0","type":"link"}