Which statement about UF resin in manufactured boards is true?

Which statement about UF resin in manufactured boards is true?

• A. UF resin makes boards edible
• B. UF resin may include additives promoting fire retardancy
• C. UF resin reduces board strength
• D. UF resin causes boards to float

Answer: (B)

UF resin acts as a binder that holds wood fibres together in manufactured boards like particleboard and MDF, giving the panel its strength. To meet fire safety requirements in building materials, manufacturers can add fire-retardant additives to the resin formulation. That means UF resin may include additives that improve its resistance to fire, which is why this statement is true. The resin isn’t meant to be edible, and its purpose is to bond fibres, not weaken the panel—so it doesn’t reduce strength. Buoyancy or floating of the boards isn’t a property governed by the resin; density and porosity determine that, not the curing of the resin.

UF resin acts as a binder that holds wood fibres together in manufactured boards like particleboard and MDF, giving the panel its strength. To meet fire safety requirements in building materials, manufacturers can add fire-retardant additives to the resin formulation. That means UF resin may include additives that improve its resistance to fire, which is why this statement is true.

The resin isn’t meant to be edible, and its purpose is to bond fibres, not weaken the panel—so it doesn’t reduce strength. Buoyancy or floating of the boards isn’t a property governed by the resin; density and porosity determine that, not the curing of the resin.