What is the recommended ambient temperature range for applying latex paint to exterior surfaces?
Correct Answer
B) 50°F to 85°F
Most latex paints should be applied when ambient temperatures are between 50°F and 85°F for proper curing and adhesion. Temperatures outside this range can cause application and performance problems.
Why This Is the Correct Answer
The 50°F to 85°F temperature range is the industry standard for latex paint application because it ensures proper film formation and curing. Below 50°F, the latex polymers don't coalesce properly, leading to poor adhesion and durability. Above 85°F, the paint dries too quickly, preventing proper leveling and potentially causing brush marks, lap marks, and reduced adhesion to the substrate.
Why the Other Options Are Wrong
Option A: 45°F to 90°F
While 45°F is close, it's still below the recommended minimum of 50°F, and the upper limit of 90°F is too high, causing the paint to dry too rapidly and creating application problems.
Option C: 55°F to 95°F
Both the lower limit of 55°F and upper limit of 95°F are outside the optimal range - 55°F is unnecessarily restrictive, and 95°F is too hot, causing rapid drying and application issues.
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