Flat metal plaster base is Type which letter?

Flat metal plaster base is Type which letter?

• A. A
• B. F
• C. SF
• D. E

Answer: (B)

The type classification is keyed to the form of the metal lath used as the plaster base. A flat metal plaster base is designated as Type F because it refers to a flat sheet metal lath that provides a smooth, even plane for the plaster to bond to. This flat substrate helps achieve a uniform finish and is chosen when a true, flat surface is needed, as opposed to textured or ribbed lath forms that create more keying or roughness. In practice, you’d select this type when the project calls for a smooth plaster finish over a flat backing, knowing that other designs (like expanded or reinforced forms) fall under different designations.

The type classification is keyed to the form of the metal lath used as the plaster base. A flat metal plaster base is designated as Type F because it refers to a flat sheet metal lath that provides a smooth, even plane for the plaster to bond to. This flat substrate helps achieve a uniform finish and is chosen when a true, flat surface is needed, as opposed to textured or ribbed lath forms that create more keying or roughness. In practice, you’d select this type when the project calls for a smooth plaster finish over a flat backing, knowing that other designs (like expanded or reinforced forms) fall under different designations.