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Master Builders Solutions by BASF www.master-builders-soluflons.bast.us Yield LINEAR FEET PER GALLON' JOINT DEPTH, JOINT WIDTH pNCHES) pNCHES) t/a %8 %2 5/a 3/a '/e 1 1 Yz 2 3 '�4 308 205 154 122 — — — — — — 1/8 — — — 82 68 58 51 — — — 1�2 — — — — 51 44 38 26 19 12 METERS PER LITER JOINT DEPTH, JOINT WIDTH(MM) (MM) 6 10 13 16 19 22 25 38 50 75 6 24.8 16.5 12.4 9.8 — — — — — — 10 — — — 6.6 5.5 4.7 4.1 — — — 13 — — — — 4.1 3.5 3.0 2.2 1.5 0.7 HOW TO APPLY SURFACE PREPARATION PRIMING JOINT PREPARATION Substrates must be structurally sound,fully 1.MasterSeal NP 1 is considered a non-priming 1.The product may be used in sealant joints cured,dry,and clean.Substrates should always sealant,but special circumstances or substrates designed in accordance with SWR Institute's be free of the following:dirt,loose particles, may require a primer.it is the user's responsibility Sealants-The Professional's Guide. oil,grease,asphalt,tar,paint,wax,rust, to check the adhesion of the cured sealant on 2.In optimal conditions,the depth of the sealant waterproofing or curing and parting compounds, typical test joints at the project site before and should be h the width of the joint.The sealant membrane materials and sealant residue. during application.Refer to product data sheet joint depth(measured at the center)should CONCRETE,STONE AND OTHER MASONRY on MasterSeal P 173 or MasterSeal P 176,and always fall between the maximum depth of h" consult Technical Service for additional information. and the minimum depth of 1/ to expos".Refer to Table 1, Clean expose a sound surface free of contamination grinding,sandblasting or wire brushing 2 For immersion applications,MasterSeal P 173 3.In deep joints,the sealant depth must be must be used. controlled by closed cell backer rod or soft and laitance. 3,Apply primer full strength with a brush or clean backer rod.Where the joint depth does not WOOD cloth.A light,uniform coating is sufficient for permit the use of backer rod,a bond breaker New and weathered wood must be clean,dry most surfaces.Porous surfaces require more (polyethylene strip)must be used to prevent and sound.Scrape away loose paint to bare primer;however,do not over-apply. three-point bonding. wood.Any coatings on wood must be tested to 4.Allow primer to dry before applying MasterSeal NP 45o maintain the recommended sealant depth, verify adhesion of sealant or to determine an 1.Depending on temperature and humidity,primer install backer rod by compressing and rolling appropriate primer. will be tack-free in 15-120 minutes.Priming and it into the joint channel without stretching it METAL sealing must be done on the same day. lengthwise.Closed cell backer rod should be Remove scale,rust and loose coatings from about Y8"(3 mm)larger in diameter than the APPLICATION metal to expose a bright white surface.Any width of the joint to allow for compression.Soft coatings on metal must be tested to verity 1.MasterSeal NP 1 comes ready to use.Apply backer rod should be approximately 25%larger adhesion n sealant or to determine an using professional grade caulking gun.Do In diameter than the joint width.The sealant appropriate primer. not open cartridges,ProPaks or pails until does not adhere to it,and no separate bond preparatory work has been completed. breaker is required.Do not prime or puncture 2.Fill joints from the deepest point to the surface by the backer-rod. holding an appropriately sized nozzle against the back of the joint.