What does a roll-setter use to ensure a tight bond of the felt?

What does a roll-setter use to ensure a tight bond of the felt?

• A. Hammer
• B. Broom
• C. Roller
• D. Brush

Answer: (B)

Brooming the felt is used to ensure a tight bond. After the roll is laid onto the tack coat, a stiff roofing broom is used to press the felt into the adhesive, seating it firmly against the substrate. This action pushes out air pockets and smooths wrinkles, promoting full contact and a uniform bond along the length and across the width. The broom’s stiff bristles help the felt bite into the tack coat without tearing, which is exactly what you want for a durable, continuous bond. Using a hammer would risk damaging the felt, a roller can help smooth but may not consistently seat the material into the adhesive on all areas, and a brush is more for applying or combing adhesive rather than pressing the felt into place.

Brooming the felt is used to ensure a tight bond. After the roll is laid onto the tack coat, a stiff roofing broom is used to press the felt into the adhesive, seating it firmly against the substrate. This action pushes out air pockets and smooths wrinkles, promoting full contact and a uniform bond along the length and across the width. The broom’s stiff bristles help the felt bite into the tack coat without tearing, which is exactly what you want for a durable, continuous bond. Using a hammer would risk damaging the felt, a roller can help smooth but may not consistently seat the material into the adhesive on all areas, and a brush is more for applying or combing adhesive rather than pressing the felt into place.