Building panels provided with a mechanical locking system including a tongue, at an edge of a first panel, cooperating with a tongue groove, at an edge of an adjacent second panel, for vertical locking of the building panels. The edge of the first panel is provided with a displacement groove, which is downwardly open, and includes an inner wall, an outer wall, and an upper wall. The tongue is formed out of the edge of the first panel. A resilient and displaceable and part of the tongue is displaceable into the displacement groove.

Building panels provided with a mechanical locking system including a tongue, at an edge of a first panel, cooperating with a tongue groove, at an edge of an adjacent second panel, for vertical locking of the building panels. The edge of the first panel is provided with a displacement groove, which is downwardly open, and includes an inner wall, an outer wall, and an upper wall. The tongue is formed out of the edge of the first panel. A resilient and displaceable and part of the tongue is displaceable into the displacement groove.

A method of remediating a water-damaged masonry structure without removing any masonry from the building, and simultaneously providing water proofing to the structure. The method involves installing a parging coat of a reliner to the pest control wire over cleaned weep holes in masonry and to a water damaged interior portions of an installed masonry exterior wall. The reliner is cured. The method involves caulking a sill plate with gasket to a foundation of the water damaged masonry structure with a silicon sealant after installing the reliner. Next each wag panel is connected to the water damaged studs forming a continuous seamless structure in the remediated structure that prevents water incursion into the structure after remediation of at least 95% and without removing the masonry.

A method of remediating a water-damaged masonry structure without removing any masonry from the building, and simultaneously providing water proofing to the structure. The method involves installing a parging coat of a reliner to the pest control wire over cleaned weep holes in masonry and to a water damaged interior portions of an installed masonry exterior wall. The reliner is cured. The method involves caulking a sill plate with gasket to a foundation of the water damaged masonry structure with a silicon sealant after installing the reliner. Next each wag panel is connected to the water damaged studs forming a continuous seamless structure in the remediated structure that prevents water incursion into the structure after remediation of at least 95% and without removing the masonry.

An expandable panel, constructed such that the expandable panel can at least expand in at least one direction, includes a panel having a front face and rear face bordered by side edges, end edges and a thickness dimension extending between the front and rear faces and includes discretely spaced cuts extending from the front face to the rear face or rear to front face. The cuts form bridging members between living hinges and are elongate and extend in a spaced longitudinal manner including at least one cut forming a side of the expandable panel located on one side of the cut, and at least two cuts located on a side of the expandable panel. The at least one cut on side and the other cuts on side together forming at least one pair of lines being substantially parallel, offset mirror images of each other and being intermeshed but not touching.

An expandable panel, constructed such that the expandable panel can at least expand in at least one direction, includes a panel having a front face and rear face bordered by side edges, end edges and a thickness dimension extending between the front and rear faces and includes discretely spaced cuts extending from the front face to the rear face or rear to front face. The cuts form bridging members between living hinges and are elongate and extend in a spaced longitudinal manner including at least one cut forming a side of the expandable panel located on one side of the cut, and at least two cuts located on a side of the expandable panel. The at least one cut on side and the other cuts on side together forming at least one pair of lines being substantially parallel, offset mirror images of each other and being intermeshed but not touching.

Covering comprising a structure formed by a plurality of panels provided on their lower face with at least one guide formed by a groove giving access to a cavity and longitudinal profiles perpendicular to said grooves on the panels, said profiles having, in turn, a guide and clips housed simultaneously in the cavities of both guides of the panel and the profile, the clips having a resilient body that is housed, in the expanded position, in the corresponding cavity, said body comprising at least two legs, each leg having, in turn, a shoulder area intended to make contact with the wall of the cavity immediately adjacent to the groove.

Covering comprising a structure formed by a plurality of panels provided on their lower face with at least one guide formed by a groove giving access to a cavity and longitudinal profiles perpendicular to said grooves on the panels, said profiles having, in turn, a guide and clips housed simultaneously in the cavities of both guides of the panel and the profile, the clips having a resilient body that is housed, in the expanded position, in the corresponding cavity, said body comprising at least two legs, each leg having, in turn, a shoulder area intended to make contact with the wall of the cavity immediately adjacent to the groove.

Building panels 1, 1 provided with a mechanical locking system including a tongue 30, at an edge of a first panel 1, cooperating with a tongue groove 20, at an edge of an adjacent second panel 1, for vertical locking of the building panels. The edge of the first panel is provided with a displacement groove 60, which is downwardly open, and includes an inner wall 61, an outer wall 62, and an upper wall 67. The tongue 30 is formed out of the edge of the first panel. A resilient and displaceable and part 66 of the tongue 30 is displaceable into the displacement groove 60.

Building panels 1, 1 provided with a mechanical locking system including a tongue 30, at an edge of a first panel 1, cooperating with a tongue groove 20, at an edge of an adjacent second panel 1, for vertical locking of the building panels. The edge of the first panel is provided with a displacement groove 60, which is downwardly open, and includes an inner wall 61, an outer wall 62, and an upper wall 67. The tongue 30 is formed out of the edge of the first panel. A resilient and displaceable and part 66 of the tongue 30 is displaceable into the displacement groove 60.