Prefabricated non-load-bearing studs come in different web designs and cross-sectional shapes to suit interior partition needs. They may have solid webs, which provide a uniform, sturdy nail and screw surface. They may have perforated webs, which reduce weight and make it easier to route electrical cables or other services through the wall cavity. They may be produced in more than one shape, offering various profiles to match different framing and attachment requirements. Because of these variations, all of these features can be found in prefabricated non-load-bearing studs.

End laps in metal lath are overlaps where one piece extends over the end of the next, creating a continuous, anchored skeleton for the plaster. The overlap distance must be enough to hold the lath firmly in place and to transfer the plaster load evenly across joints, preventing gaps, tearing, or movement as plaster is applied and as the wall experiences movement with drying, curing, or temperature changes. The minimum end lap distance for metal lath is one foot. That amount provides sufficient surface area for the lath to grip the adjacent sheet and for the plaster to bond across the joint, reducing the risk of cracking or loosening at the lap. Shorter overlaps—such as six inches or three inches—can allow gaps or pull-out under plastering stresses, while a two-foot overlap is more than necessary for standard practice.

Lead acts as a radiation shield, so lead-backed lath is laminated on one side to place the shielding directly in the path of the X-ray beam toward the protected space. This single-sided backing provides the necessary attenuation while keeping weight and cost reasonable. Adding lead to both sides adds unnecessary weight and expense, and placing it in the middle wouldn’t position the shield effectively in the beam path. Not using any lead would fail to block X-ray transmission.

Plastering work creates several hazards at once—wet material can splatter, dust from dry plaster can irritate the lungs, tools can injure eyes or skin, and working on scaffolds or ladders brings a fall risk. The best protection is a full set of personal protective equipment that covers these risks: eye protection to guard against splashes and dust, gloves to protect hands from caustic materials and rough textures, a dust mask or respirator to filter particulates, hearing protection where noisy tools are used, protective clothing to keep skin and clothes clean and resist splashes, and fall protection when working at height. Sunscreen alone won’t address these hazards, and opting for no PPE or only one item (like safety shoes) leaves many risks unprotected. This comprehensive approach keeps eyes, skin, lungs, ears, and bodies safe on plastering jobs.