What covers and hides surface cracks?

• A. Elastomeric coating
• B. Wood filler
• C. Primer
• D. Caulk

Answer: (A)

The concept is using a flexible coating that can bridge and hide cracks in a surface. Elastomeric coatings are thick, highly elastic films that move with the substrate as it expands and contracts. This flexibility lets the coating cover hairline cracks and create a continuous surface, sealing out moisture and hiding the cracks under the paint or color layer. Wood filler is meant for filling holes in wood, not for covering cracks on masonry or plaster surfaces. Primer helps with adhesion and sealing, but it doesn’t form a thick, protective film that hides cracks. Caulk seals gaps and joints but isn’t used as a durable, overall coating to cover a wall’s surface cracks.