Nail the Red Seal Carpenter Test 2026 – Build Your Dream Career!

Friction fit insulation should be installed tightly enough to fill the gaps and hold itself in place. Option A is incorrect because while a snug fit is important, it is not necessary to completely prevent convection. Option B is incorrect because insulation should be distributed evenly throughout the wall, not just in the inner third. Option C is incorrect because leaving one third of the wall cavity empty can result in air gaps and reduced effectiveness of the insulation. Therefore, option D is the most appropriate and effective way to install friction fit insulation.