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Application Instructions For Backstop NT For Use Beneath Claddings Other Than Dryvit EIFS DS300 d. Spray/Back-rolling Application 1)Apply Dryvit Grid Tape as described in Section IV.E.1 above. Mix the material as described in Section I and using a stainless steel trowel or spatula, apply a layer of Backstop NT-Texture over the grid tape and spot all fastener heads. Allow to dry for a minimum of 2 hours or until dry to the touch. 2) Because of the absorption characteristics, plywood substrates may require a second pass to fill any voids at the sheathing joints. After the first pass has dried,check the joints and spot any voids that may be present with additional Backstop NT-Texture material and allow to dry. 3) Using a hand held hopper gun or other suitable texture spray equipment, spray a layer of Backstop NT-Texture onto the wall surface. Using a coarse, open-cell foam roller cover with a 3/8 in (9.5 mm)foam nap(FoamPRO#58 roller), roll the material to create a smooth continuous film. NOTE: If the roller pulls material back out of the sheathing joints, it indicates that the joint material is not sufficiently dry. 4)While Backstop NT-Texture is still wet, using a trowel or spatula,smooth out the Backstop NT- Texture around all window and door perimeters and other areas that will later receive Dryvit Flashing Tape—Figure 3. 5)Backstop NT-Texture material should be applied in a uniform, continuous film at the recommended coverage rate. NOTE: Substrates with a surface texture or high porosity will require additional material. 3. Backstop NT-Smooth Application a. General: Dryvit Backstop NT-Smooth can be applied using a roller or sprayed and back-rolled over the acceptable sheathing substrates. NOTE:OSB sheathing requires that joints and fasteners be treated with Backstop NT-Texture.A minimum of two(2)coats of Backstop NT-Smooth or Backstop NT-Spray are required for the field of the wall. Backstop NT-Texture is not recommended for application in the field of the board. b. Sheathing Substrates:All fastener heads shall be spotted and joints treated with Backstop NT-Texture and Dryvit Grid Tape in accordance with Section IV.E.1 prior to Backstop NT-Smooth application. c. Roller Application 1) Using the appropriate nap roller(see Usage Application Chart), apply the Backstop NT- Smooth over the entire wall surface, including previously treated joints. NOTE: If the roller pulls material back out of the sheathing joints, it indicates that the joint material is not sufficiently dry. 2) Backstop NT-Smooth material should be applied in a uniform,continuous film at the recommended coverage rate—Figure 4. NOTE:Sheathing substrates with a surface texture or high porosity will require additional material. Backstop NT- Texture topNT- Smoo Smooth Figure 4 d. Spray/Back-rolling Application 1) Backstop NT-Smooth may be applied to the wall using a hopper gun or texture spray equipment and back-rolled using the appropriate nap roller(see Usage Application Chart). 2)Allow the Backstop NT-Smooth to completely dry, check the wall to ensure that the Backstop NT- Smooth is continuous and touch up any visible voids with additional Backstop NT-Smooth material. e.Allow the Backstop NT-Smooth to completely dry prior to installation of the specified cladding. 8