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Priming

Primers enhance material bonding performance. Techsil supply a variety of primers to compliment our range of adhesives and sealants.

Primers enhance material bonding performance. Techsil supply a variety of primers to compliment our range of adhesives and sealants.

The area that will be primed with adhesive primer should be ready to go before the primer is applied to the substrate. This means that the area to be primed, the primer, and the adhesive should be kept at or above 65°F (18.3°C) for at least 48 hours before and 48 hours after the primer and adhesive are installed. This will ensure that the primer dries evenly, and that the adhesive itself will dry correctly. Warm materials bond to adhesive more readily than do cold materials. That is why the surface must be acclimated as well.

Before adhesive primer is applied, the user should be sure the substrate is clean. This means that it is free of any kind of surface contaminants that will prevent the adhesive primer from working at its ideal level. Any dust, dirt, wax, polish, paint, oil, grease, or other contaminants that will interfere with effective material bonding should be removed. The substrate must also be in good, usable condition, and be relatively smooth and dry.

The amount of coverage that will be provided with a given amount of adhesive primer will vary depending on the porosity and the smoothness of the substrate. Rougher substrates should be smoothed as much as possible with a patching and levelling compound. The compound should be dried and cured according to the manufacturer’s recommendations before adhesive primer is applied.

When applying adhesive primer, a short nap paint roller or a coarse fibre brush should be used. If puddles form during application, they should be rolled or brushed through so they will not become a bonding issue when the adhesive is applied. Adhesive primer should be used at full strength, and tools can be cleaned with warm water.

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