{"product_id":"nomaco-closed-cell-backer-rod-4-in-diameter-x-6-ft-construction-foam","title":"Nomaco Closed Cell Backer Rod, 4 in. Diameter x 6 ft. Construction Foam","description":"\u003ch1\u003eNomaco Closed Cell Backer Rod, 4 in. Diameter x 6 ft. Construction Foam\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eThis Nomaco closed cell backer rod is a 4 in. diameter, 6 ft. long construction foam filler for concrete expansion and contraction joints. Engineered for commercial, residential, municipal, civil, and industrial projects, it backs up sealant joints in nearly any concrete structure. One piece per order.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosed cell foam:\u003c\/strong\u003e Closed cell construction foam serves as a filler for concrete expansion and contraction joints.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge diameter:\u003c\/strong\u003e 4 in. diameter rod sized for wide horizontal and vertical joints.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6 ft. length:\u003c\/strong\u003e Each piece measures 6 ft. long.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-market use:\u003c\/strong\u003e Designed for commercial, residential, municipal, civil, and industrial projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile filler:\u003c\/strong\u003e Can also be used as a concrete form almost anywhere concrete is used.\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\u003eNomaco\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 piece, 4 in. x 6 ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNomaco construction foam materials\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClosed cell foam\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 in. x 6 ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6 ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntended use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFiller for concrete expansion and contraction joints; concrete forms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCommercial, residential, municipal, civil, and industrial projects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch2\u003eCoverage \u0026amp; How Much You Need:\u003c\/h2\u003e\u003cp\u003eOne 6 ft. piece fills 6 linear feet of 4 in. wide joint when sized per standard practice at roughly 25% joint-width compression. Order pieces by dividing total joint length by 6 ft. and allowing for splices.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eUse behind compatible joint sealants in concrete expansion and contraction joints. Diameter should be oversized roughly 25% relative to joint width for proper compression fit.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is included in one order?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e One 6 ft. piece of 4 in. diameter closed cell backer rod.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How much joint does one piece fill?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e One piece covers 6 linear feet of joint at 4 in. diameter; order by total joint length with allowance for splices.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Where is this rod used?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It fills concrete expansion and contraction joints and can serve as a concrete form in commercial, residential, municipal, civil, and industrial work.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Why closed cell?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Closed cell foam resists absorbing moisture and gases, which helps control sealant bubbling in horizontal joints.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What size joint does this fit?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Backer rod is typically installed compressed about 25%, so a 4 in. rod suits roughly a 3 in. wide joint; confirm with your sealant spec.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eOn wide expansion joints, correct backer rod diameter is as important as the sealant itself: undersized rod lets the sealant sink and tear, while oversize rod is difficult to seat. This 4 in. closed cell rod suits large civil and industrial joints. Insert it with a roller to reach the specified depth before tooling the sealant.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eFollow sealant manufacturer safety guidance and wear gloves and eye protection when cutting and installing backer rod.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eGet the Nomaco closed cell backer rod sized right for your expansion joints.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Nomaco","offers":[{"title":"Default Title","offer_id":53522927485295,"sku":"NOM3379140001","price":16.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/NOM3379140001_0.jpg?v=1790234004","url":"https:\/\/superarbor.io\/products\/nomaco-closed-cell-backer-rod-4-in-diameter-x-6-ft-construction-foam","provider":"Super Arbor","version":"1.0","type":"link"}