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Backstop NT For Use Beneath Claddings Other Than Dryvit EIFS Specifications DS200 B. Backstop NT—Smooth 1. General: Backstop NT—Smooth is used in conjunction with Dryvit Backstop NT—Texture joint treatment and shall be applied in accordance with current, published Dryvit Backstop NT Application Instructions For Use Beneath Claddings Other Than Dryvit EIFS, DS300. 2. Backstop NT—Smooth is ready to use after an initial spin-up using a"Twister"paddle or equivalent mixing blade, powered by a 1/2 in (12.7 mm) drill,at 450—500 rpm. Do not add cement or any other additive. 3. Prior to Backstop NT—Smooth application, sheathing joints, including inside and outside corners, shall be treated with Backstop NT—Texture and Dryvit Grid Tape. All fastener heads shall also be spotted with Backstop NT—Texture. Refer to Backstop NT Application Instructions For Use Beneath Claddings Other Than Dryvit EIFS, DS300, for complete details. Allow to dry a minimum of 2 hours or until dry to the touch. Cool humid conditions will require longer drying time 4. Apply Backstop NT Smooth over the entire wall surface, including previously treated fasteners and sheathing joints. Refer to the chart on the Backstop NT Product Data Sheet For Use Beneath Claddings Other Than Dryvit EIFS, DS806, or Application Instructions For Use Beneath Claddings Other Than Dryvit EIFS, DS300,for proper tools and respective coverage. Note:Applications over OSB sheathing requires a minimum of 2 coats of Backstop NT—Smooth or Spray. Backstop NT—Texture is not recommended for the field of wall application over OSB. 5.Allow to dry a minimum of 4 hours prior to application of Dryvit AquaFlash or Dryvit Flashing Tape. Allow to dry a minimum of 24 hours prior to cladding installation. Cool damp weather will require longer drying times. During cool damp weather, Flashing Tape Surface Conditioner may be necessary for proper Flashing Tape adhesion. 6. Install the specified cladding per published installation instructions for the specific cladding being used. C. Backstop NT—Spray 1. General: Backstop NT—Spray shall be applied in accordance with current published Dryvit Backstop NT Application Instructions For Use Beneath Claddings Other Than Dryvit EIFS, DS300. 2. Backstop NT—Spray is ready to use after an initial spin-up using a"Twister"paddle or equivalent mixing blade, powered by a 1/2 in(12.7 mm)drill, at 450—500 rpm. Do not add cement or any other additive. 3.A maximum of 16 oz(473 ml) of clear potable water may be added if required to adjust workability. 4.Apply a strip of Dryvit Grid Tape over all sheathing joints, including inside and outside corners and trowel c apply a layer of Backstop NT-Texture over the Dryvit Grid Tape. 5. Backstop NT—Spray may be applied using airless spray equipment. Refer to Dryvit Backstop NT Application Instructions For Use Beneath Claddings Other Than Dryvit EIFS, DS300 for complete details. 6 Apply Backstop NT—Spray over the entire wall surface, including previously treated joints. Refer to the chart on the Backstop NT Product Data Sheet For Use Beneath Claddings Other Than Dryvit EIFS, DS806,or Application Instructions For Use Beneath Claddings Other Than Dryvit EIFS, DS300,for proper tools and respective coverage. 7.Allow to dry a minimum of 4 hours prior to application of Dryvit AquaFlash or Dryvit Flashing Tape and adhesively applied EPS insulation board or specified cladding. Cool damp weather will require longer drying times. During cool damp weather, Flashing Tape Surface Conditioner may be necessary for proper Flashing Tape adhesion. 8. Install the specified Dryvit Exterior Insulation and Finish System or specified cladding per published installation instructions for the specific system or cladding being used. 3.04 FIELD QUALITY CONTROL A. The contractor shall be responsible for the proper storage and application of the Dryvit materials. B. Dryvit assumes no responsibility for on-site inspections or application of its products. C. The contractor and general contractor shall review and follow the Backstop NT Application Instructions For UstReneath Claddings Other Than Dryvit EIFS, DS300. 3.05 CLEANING A. All excess Dryvit materials shall be removed from the job site by the Contractor in accordance with contract provisions. B.All surrounding areas,where Dryvit materials have been installed, shall be left free of debris and foreign substances resulting from the Contractor's work. ihre