CCQ Painter Trade Qualification English Version – Graphite Practice Test

Which statement accurately describes substrate preparation before caulking?

Prepare the substrate by removing old caulk, cleaning, and drying. Apply caulk directly without prep. Only clean the joint area. Only remove old caulk.

Correct Answer:

Prepare the substrate by removing old caulk, cleaning, and drying.

Explanation:

Preparing the substrate means creating a clean, dry surface free of contaminants so the new caulk can form a strong bond. Removing old caulk eliminates compromised edges that can trap moisture and fail to bond, cleaning removes dust, oils, and residue that would prevent adhesion, and drying ensures moisture isn’t present to interfere with curing. When all three steps are done, the sealant can adhere properly to sound material and seal the joint effectively. Skipping or partial prep lets old material linger, or moisture and dirt remain, leading to poor adhesion, cracking, or mold growth.

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