Save on Labor and Eliminate Spills by Utilizing CAV-PRIME

For a faster, more efficient way to apply primer for various EPDM and TPO pressure-sensitive products, we recommend CAV-PRIME, a revolutionary new system that features Carlisle’s membrane primers packaged in a pressurized #20 cylinder. Compared to the conventional method of applying primer from a 1-gallon can, CAV-PRIME provides increased coverage rates, increased shelf life, eliminates spills from kicked over cans on the roof, reduces waste of primer curing in a pail that has been improperly sealed, and decreases prep time for pressure-sensitive products.

Like the CAV-GRIP III adhesive dispensing method, CAV-PRIME borrows the same concept and some of the same accessories, but utilizes a paint roller clamped onto the spray gun to spread the primer evenly.

To use CAV-PRIME, assemble the components of the CAV-PRIME Applicator Kit onto the 3’ long spray gun. Instructions with pictures for this assembly are included in the CAV-PRIME Applicator Kit.

To apply the primer, adjust the spray gun stop nut and trigger lock to half throttle, spray a small puddle of primer onto the surface to be primed, “wet out” the roller cover with the primer, and begin the priming application at a walking speed that allows you to maintain a controlled and straight line. Depending on how wide the primer needs to be applied, spraying back and forth may be necessary. Trigger the gun as needed to keep the roller cover wet with primer. Continue to apply the primer, making sure that there will be no dry edges once the pressure-sensitive tape product is in place.

It is worth noting that any time the spray gun is idle, the trigger lock should be engaged, and the tank valve should remain open until the contents in the tank are spent or when the hose is to be flushed with cleaner.

To clean and store CAV-PRIME, you should always keep the gun, tip, and hose clean; this is important for long-term performance. If the equipment is going to be ideal for more than a few days, flush the hose and gun with CAV-PRIME Low-VOC Hose and Gun Cleaner. Do not interchange cleaners, as other cleaners will react adversely with the primers, rendering the spray gun and hose unusable. Store cylinders in a protected, conditioned space with temperatures maintained between 60°F (15°C) and 90°F (32°C). Do not store or heat cylinders where temperatures reach 110°F or higher.

General Tips, Tricks, and Precautions:

• It is not necessary to continually trigger the gun and apply primer to the membrane surface. Trigger the gun only when the roller cover needs refreshed with primer or when dry spots appear on the membrane.
• Regulate primer flow through the gun by adjusting stop nut and trigger lock to approximately half throttle. This will reduce splashing of the primer as it is being shot onto the membrane.
• Do not use standard heat bands, as they don’t have temperature controls and therefore can overheat the cylinders.
• Adjust the CAV-PRIME applicator attachment clamps so the nozzle is just behind the roller cover by a couple of inches and shooting out over the top of the roller cover.

For complete assembly and application instructions, see the CAV-PRIME Assembly and Application Instructions sheet on the Carlisle website. If you have any further questions about CAV-PRIME, please contact your local Carlisle manufacturer's representative.