A protective barrier that will typically be installed beneath ceilings during construction work being performed on ceilings or roofs of buildings. The protective barrier can be comprised entirely of one material or of different materials connected by seams. Some or all of these materials can be designed to fail when contacted by water via dissolution, melting or through some other destructive process initiated by contact with water. Some or all of the materials comprising the protective barrier can be designed to fail at a certain temperature. This failure can create access points from the ceiling through the protective barrier to the area being protected by the barrier, which can allow water from a fire suppression system to reach a fire located below the protective barrier.

A protective barrier that will typically be installed beneath ceilings during construction work being performed on ceilings or roofs of buildings. The protective barrier can be comprised entirely of one material or of different materials connected by seams. Some or all of these materials can be designed to fail when contacted by water via dissolution, melting or through some other destructive process initiated by contact with water. Some or all of the materials comprising the protective barrier can be designed to fail at a certain temperature. This failure can create access points from the ceiling through the protective barrier to the area being protected by the barrier, which can allow water from a fire suppression system to reach a fire located below the protective barrier.

The invention relates to a sheet (10) for protecting a form-work surface, intended to surround a construction material. According to the invention, the sheet (10) comprises at least: a front layer, including at least one polymer material and provided to be in contact with the construction material so as to reduce wear and the formation of grooves on the framework surface and to limit adhesion of the construction material during removal of the formwork; and a rear adhesive layer, provided to be positioned against the formwork surface and rigidly connect the sheet (10) to the formwork surface before the construction material is introduced. The invention also relates to a formwork installation (1) equipped with at least one such sheet (10). The invention further relates to a method of producing and a method of using a sheet (10) of this type.

The invention relates to a sheet (10) for protecting a form-work surface, intended to surround a construction material. According to the invention, the sheet (10) comprises at least: a front layer, including at least one polymer material and provided to be in contact with the construction material so as to reduce wear and the formation of grooves on the framework surface and to limit adhesion of the construction material during removal of the formwork; and a rear adhesive layer, provided to be positioned against the formwork surface and rigidly connect the sheet (10) to the formwork surface before the construction material is introduced. The invention also relates to a formwork installation (1) equipped with at least one such sheet (10). The invention further relates to a method of producing and a method of using a sheet (10) of this type.

System for plugging an opening, including: a plug element designed to cover said opening, a frame made up of at least four rails (1′) designed to be positioned inside the opening and including a first groove (22) formed on a front wall of each rail, and a seal (29),
said first groove (22) being designed to accommodate a substantially peripheral part (27) of the plug element, said seal (29) being designed to be accommodated with a tight fit in retaining means (34) inserted in said groove (22) and retaining said plug element on the frame.

A stair protection device includes a protection sheet having a first riser protection portion, a tread protection portion, and a second riser protection portion. The protection sheet also has at least one slit in the tread protection portion, a first score in the protection sheet between the first riser protection portion and the tread protection portion, and a second score in the protection sheet between the second riser protection portion and the tread protection portion. The protection sheet can be secured to a stair by adhering tape on a top of the tread protection portion over the at least one slit such that at least a portion of the tape passes through the at least one slit and adheres to a tread of the stair.

A stair protection device includes a protection sheet having a first riser protection portion, a tread protection portion, and a second riser protection portion. The protection sheet also has at least one slit in the tread protection portion, a first score in the protection sheet between the first riser protection portion and the tread protection portion, and a second score in the protection sheet between the second riser protection portion and the tread protection portion. The protection sheet can be secured to a stair by adhering tape on a top of the tread protection portion over the at least one slit such that at least a portion of the tape passes through the at least one slit and adheres to a tread of the stair.

A construction method for protecting a surface of a structure is provided to protect interior and exterior surfaces of the structure before construction starts. The construction method is executed by laying a soft base material on the surfaces of the structure and covering the base material with a quick setting cement material to form a leveled cement plate with great wear resistance and pressure resistance whereby the surfaces are not damaged by any improper force derived from the construction. Thus, the construction efficiency is increased. The base material on which the quick setting cement material is laid can be easily removed from the surfaces of the structure without tools because the base material is not adhered to the surfaces. The base material can also be reused after being separated from the quick setting cement material to prevent the occurrence of environmental pollution and reduce the cost of construction.

A wraparound cover for a step or a seat includes rods on opposed ends beneath the step and tie wraps engaging the rods through holes in the opposed ends to secure the cover to the step. Each opposed end may be bifurcated into two parts to accommodate a riser supporting the step. In such configuration, a rod and holes are formed at each of the parts to accommodate tie wraps for drawing the rods in opposed parts of the opposed ends toward one another to secure the wraparound cover about the step or the seat.

A wraparound cover for a step or a seat includes rods on opposed ends beneath the step and tie wraps engaging the rods through holes in the opposed ends to secure the cover to the step. Each opposed end may be bifurcated into two parts to accommodate a riser supporting the step. In such configuration, a rod and holes are formed at each of the parts to accommodate tie wraps for drawing the rods in opposed parts of the opposed ends toward one another to secure the wraparound cover about the step or the seat.