13007268 - Laserfiche WebLink

Home Browse Search

Application Instructions For Backstop NT For Use Beneath Claddings Other Than Dryvit EIFS DS300 D Usage Application Chart: Backstop NT(BSNT}-Texture, Smooth,and Spray Beege1Ap, n Chart Approx.Coverage Approx.Coverage Per Per Pail Drum Exterior Grade GYPSUM Sheathing Joints' BSNT-Texture Trowel 300 lin.ft(91 m) Trowel,FoamPRO#58 Roller° 250-00 ft2(23-28 m2) BSNT-Texture or Texture Sprayer Face BSNT-Smooth`a 1/2 In(12.7 ram)Nap Roller 500 ft2(46 m2) or Texture Sprayer BSNT-Spray' Airless Spray 500-600 ft2(46-56 m2) 5,000-6,000 ft2(465-557 m2) FiberglassPaced Exterior Gypsum Sheathing, ^ % Joints' BSNT-Texture Trowel 300 lin.ft(91 m) Trowel or Texture Sprayer 250300 ft2(23-28 m2) BSNT-Texture [includes joints] Face` BSNT-Smooth`,a 3/4 in(19 mm)Nap Roller 400(t2(37 m2) or Texture Sprayer BSNT-Spray° Airless Spray 500-600 ft2(46-56 m2) 5,000.6,000 ft2(465-557 m2) Exposure 1,Exterior Grade,and Fire Retardant Treated Plywood,and ExtorterEminent Bawd Joints' BSNT-Texture Trowel 300 lin.ft(91 m) Trowel,FoamPRO#58 Roller° 250-300 ft2(23-28 m2) BSNT-Texture or Texture Sprayer Face BSNT-Smooth`11 1/2 in(12.7 mm)Nap Roller 400 ft2(37 m2) or Texture Sprayer BSNT-Sprays Airless Spray 500500 ft2(46-56 m2) 5,0005,000 ft2(465-557 m2) �r APA Exposure 1 Rated Oriented Strand Board(OSB) Joints' BSNT-Texture Trowel 300 lin.ft(91 m) BSNT-Smooths 1/2 in(12.7 mm)Nap Roller 350400 ft2(33-37 m2), Face or Texture Sprayer applied in 2 coats, BSNT-Sprayr Airless Spray backrolled 3,500-4,000 ft2(325-372 m2) Concrete and Masonryes 200-250 ft2(19-23 m2)' BSNT-Texture Trowel' applied in 1 coat 200-250 ft2(19-23 m2)' Face BSNT-Texture FoamPRO#58 Roller applied in 2 coats, or Texture Sprayer backrolled BSNT-Sprays Airless Spray 300-500 tI(28d6 m2) 3,000-5,000 ft(279d65 m2) °Tape the joints with Dryvit Grid Tape prior to application of Backstop NT-Texture at joints and screw heads. b Up to 1 pint(16 oz)of water may be added to a 60 lb pall of Backstop NT-Texture for roller or spray applications only.The FoamPRO a58 roller cover(FoamPRO Mfg.,Inc.,www.foampromfg.com)Is available at home supply stores. °Because of application methodology and absorptive surface differences,two coats may be required to obtain this coverage. °Due to variations in types of concrete/masonry,apply a 6 ft x 6 ft test area with coverage as indicated In the chart,before proceeding with the entire job. If there are voids in the substrate,particularly at the mortar joints,the job should be parged with Genesis®,24 hours prior to BSNT-Texture application. Backstop NT shall NOT be used as a skim coat for earning CMU joints or heavy textured units. °Backstop NT-Texture(with up to 1 pint water addition per 60 lb.pall)or Smooth may be sprayed and backtrowelledlbackrolled. Coverage may vary depending on the texture and porosity of the substrate. Coverage assumes a smooth,dense surface. 9 Backstop NT should be applied at the recommended coverage rates to form a continuous film free of voids,pinholes or other discontinuities. The following approximate mil thicknesses are recommended: Backstop NT Texture 12 DFT 20'WFT Backstop NT Smooth 12 DFT 20'WFT Backstop NT Spray 9 DFT 15'WFT *Based on volume solids Refer to Product Data Sheets for Complete Mixing and Application Instructions 5