Sarnacol® 2175 membrane adhesive is a spray applied, canister adhesive used to bond Sarnafil® or Sikaplan® bareback membranes to approved substrates.
UsageUsed to adhere Sarnafil and Sikaplan bareback membranes. AREAS OF APPLICATION Approved Substrates
- Concrete Block
- Polyisocyanurate Insulations
- High Density Polyisocyanurate Roof Boards
- Gypsum Cover Boards
Advantages▪ Compatible with Sarnafil and Sikaplan membranes ▪ Self-contained, portable spray system for fast application and minimal cleanup ▪ Quick drying ▪ Low VOC
Canister in carton, 40 lbs (18.14 kg), 36 cartons per pallet
APPROVALS / STANDARDS
- FM Global
- ASTM E108 Class A
- ICC Code Compliant - ERS 1157
12 months if stored properly in original unopened, sealed and undamaged packaging.
Store canisters between 60°F (16°C) and 90°F (32°C). Do not store in direct sunlight. Contents are flammable. Store in accordance with local, state, and federal regulations.
Volatile organic compound (VOC) content
Typical coverage rate for a canister is 400 – 600 ft2 (37– 55 m2) of bonded membrane. Application rate may vary depending on spray pattern, surface roughness and porosity.
Apply Sarnacol 2175 in ambient temperatures of 40°F (4°C) and rising provided the canister temperature is above 65°F (18°C) during application. The spray pattern will become inconsistent and begin to spit rather than spray when the adhesive temperature drops below 65°F (18°C).
Utilize power-heated blankets or hot boxes when necessary to keep the canisters warm. Power-heated blankets will keep the canisters warm but are not intended to heat cold canisters. Never use band heaters or any device capable of heating the canisters above 100°F (38°C) as these devices may cause explosion or personal injury.
Always keep the canister in an upright position. The dip tube inside the canister extends to the bottom of the canister. Attempting to dispense the adhesive when the canister is on its side or upside down will release only the propellant. The loss of propellant will significantly reduce the spray pattern, coverage rates and overall yield.
Protect the membrane and adjacent surfaces from overspray.
The following accessories are sold separately.
Sarnacol 2175 Spray Gun – Part #679513 (includes 2 ft spray wand and spray tip)
Sarnacol 2175 Spray Hose – Part #679516 (12 ft), #679515 (18 ft)
Sarnacol 2175 Spray Tips – Part #679514 (9502E)
Sarnacol 2175 Cleaner – Part #679512
All surfaces must be clean, dry, and free of dirt, grease, oil, or other contaminants or particulates.
- Shake the canister to agitate contents that may have settled. Keep the canister in the carton so it remains stable during application.
- Close the adjustment wheel behind the spray gun trigger to prevent accidental spray.
- Connect the spray hose to the spray gun.
- Connect the other end of the spray hose to the canister valve outlet. Use caution not to strip threads or overtighten the connection.
- Open the canister valve to pressurize the spray hose and keep the adhesive in a fluid state, during the workday. At the end of the workday, it is recommended to close the canister valve and clean the spray hose and spray gun with Sarnacol 2175 Cleaner. Refer to the Sarnacol 2175 Cleaner product data sheet for instructions.
- With the canister in the carton and in an upright position, open the adjustment wheel behind the spray gun trigger. Hold the spray gun approximately 12" (30.5 cm) from and perpendicular (90 degrees) to the substrate. Press the spray gun trigger and spray the adhesive onto the membrane and substrate in a continuous, uniform pattern with a 50% overlap avoiding any globs or puddles.
- Orient the membrane spray pattern so it is perpendicular (90 degrees) to the substrate spray pattern. Adjust the width of the spray pattern by opening or closing the adjustment wheel behind the spray gun trigger. Porous substrates may require an additional pass of adhesive to provide enough “layup” on the surface to properly bond to the membrane to the substrate.
- Do not apply the adhesive to the membrane seam areas. Immediately clean any overspray in the lap area with Sarnacol 2175 Cleaner or acetone.
- Allow the coated surfaces to dry. The adhesive typically dries in 3-5 minutes. The adhesive is dry when there is no wet transfer of adhesive and the adhesive is not tacky. The maximum open time after the adhesive has dried is 30 minutes. After 30 minutes, reapply a light coat of adhesive to the surfaces following Steps 6 through 8 above.
- Set the membrane to the substrate as soon as the adhesive is dry. The longer the coated surfaces are open after drying, the more pressure is required to achieve adequate bonds. Smooth the membrane to ensure there are no wrinkles or air pockets. Press the bonded sheet firmly in place with a minimum 75 lb (34 kg) steel roller by rolling in two directions. Use a hand roller on vertical flashings. Any area that does not receive adequate pressure may yield a false bond.
- Check the adhesion of the membrane to the substrate by peeling back the edge of the membrane. The adhesive should not release from either surface. An acceptable initial bond will exhibit ‘legging’ or ‘stringing’ of adhesive from both surfaces.
- When the canister is empty, close the canister valve and press the spray gun trigger to relieve pressure from the spray hose. Disconnect the spray hose from the canister and quickly connect it to a new canister. Repeat Steps 5 through 11 above.
Clean the spray hose and spray gun with Sarnacol 2175 Cleaner. Refer to the Sarnacol 2175 Cleaner product data sheet for instructions.
Spray tips can be soaked separately in Sarnacol 2175 Cleaner, MEK, MEK Substitute or acetone. Use a small gauge wire or torch clean-out tool to remove clogs.
DISPOSAL OF EMPTY CANISTER
- When the canister is empty, close the canister valve and press the spray gun trigger to relieve pressure from the spray hose.
- Disconnect the spray hose from the canister.
- Place the canister in an upright position and point the canister valve into a suitable waste container. Slowly open the canister valve to exhaust any remaining propellant and adhesive.
- Mark the canister “empty”. Keep the canister valve open and allow it to sit in an upright position for at least one hour to fully exhaust the pressure.
- Puncture the rupture disc on the side of the canister using a brass punch and hammer.
- Recycle or dispose the empty canister in accordance with all applicable local, state, and federal regulations.