A roof mount assembly mounts a structure to a roof having a rafter and a substrate supported by the rafter. The roof mount assembly includes a piece of flashing positioned on the substrate. The flashing includes a first surface, a second surface opposite the first surface and an aperture extending through the flashing. A fastener extends through the flashing aperture. A bracket is connected to the flashing via the fastener, and the bracket is sized to support at least one roof-mounted structure on the roof. A seal is positioned between the flashing aperture and the fastener. The seal is sized to form a water-tight seal with the aperture to inhibit flow of fluid through the aperture. The seal includes a first portion and a second portion, in which the first portion is positioned to abut the flashing first surface and the second portion is positioned to extend through the aperture.

A roof mount assembly mounts a structure to a roof having a rafter and a substrate supported by the rafter. The roof mount assembly includes a piece of flashing positioned on the substrate. The flashing includes a first surface, a second surface opposite the first surface and an aperture extending through the flashing. A fastener extends through the flashing aperture. A bracket is connected to the flashing via the fastener, and the bracket is sized to support at least one roof-mounted structure on the roof. A seal is positioned between the flashing aperture and the fastener. The seal is sized to form a water-tight seal with the aperture to inhibit flow of fluid through the aperture. The seal includes a first portion and a second portion, in which the first portion is positioned to abut the flashing first surface and the second portion is positioned to extend through the aperture.

A combined anchor and fastener that includes an anchor baseplate having at least one throughbore extending between a top surface and a bottom surface of the anchor baseplate. An elongated post is coupled to the anchor baseplate with an at least partially threaded, internal cylindrical bore for receipt of a mechanical fastener which extends between a first end and a second end of the post whereupon the post internal bore is in alignment and registry with the throughbore of the baseplate. The post includes a second end portion depending from the bottom surface of the anchor baseplate such that the bottom surface of the anchor baseplate is configured to abut and lie generally flush against a portion of a concrete structure apart from a portion which is covered by the post second end portion. The disclosure includes further embodiments as well as a method of anchoring and fastening an object to a concrete structure.

A metal roof flashing system includes a pipe flashing assembly including a triangular base flashing, a rubber vent support, and a lower flashing seal. The pipe flashing assembly is structured to receive a roof vent pipe and form a watertight seal around a plumbing vent stack on a roof surface or side wall of a building. The rubber vent support is flexible and contours to and around the roof vent pipe and form a seal. The pipe flashing assembly is able to be installed on a metal roof surface of a building.

A water barrier system to protect a roof surface from environmental conditions is disclosed. In one embodiment, the water barrier system includes an underlayment layer and a liquid applied coating. In use, the underlayment is coupled to the roof surface. Thereafter, the liquid coating is applied to the underlayment to form a barrier layer. The underlayment may be manufactured from a porous material so that the liquid applied coating is at least partially absorbed by the porous underlayment. In this manner, direct application of the liquid coating to the roof surface is eliminated. In one embodiment, the underlayment may be provided with a load bearing component/layer and a coating absorbing component/layer. For flat roof applications, the load bearing component/layer may be provided with increased rigidity for dimensional and installation stability. Meanwhile, for roof penetration applications, the load bearing component/layer may be provided with increased elasticity to enable the underlayment to wrap about the penetration.

A roof mount assembly mounts a structure to a roof having a rafter and a substrate supported by the rafter. The roof mount assembly includes a piece of flashing positioned on the substrate. The flashing includes a first surface, a second surface opposite the first surface and an aperture extending through the flashing. A fastener extends through the flashing aperture. A bracket is connected to the flashing via the fastener, and the bracket is sized to support at least one roof-mounted structure on the roof. A seal is positioned between the flashing aperture and the fastener. The seal is sized to form a water-tight seal with the aperture to inhibit flow of fluid through the aperture. The seal includes a first portion and a second portion, in which the first portion is positioned to abut the flashing first surface and the second portion is positioned to extend through the aperture.

A building including a roof and a rooftop mechanical unit, the rooftop mechanical unit being supported on top of the roof by at least a first roof curb and a second roof curb, a gap being provided between the roof curbs, each of the roof curbs being less than 15 feet in length; wind can blow snow through the gap and out the other side, which inhibits the buildup of a snowdrift which undesirably increases roof load.

Various roof vent adaptors are disclosed. The roof vent adaptors can be used to seal penetrations on buildings, such as vent penetrations on metal or non-metal roofs. In various embodiments, the roof vent adaptor includes a sealing member, an outer securing unit and an inner securing unit. The roof vent adaptor can be secured to the roof to provide a generally liquid-tight seal around the roof vent, thereby inhibiting or preventing water intrusion into the building.

A kit for flashing a mount of a photovoltaic assembly on a surface includes a flashing assembly. The flashing assembly includes flashing that extends across an interface of the mount and the surface when the mount is attached to the surface. The flashing includes a bottom surface and a top surface. The flashing assembly also includes tape attached to the bottom surface of the flashing. The tape includes a first attachment area and a second attachment area. The flashing assembly has a first configuration in which the first attachment area is attached to the flashing and the second attachment area is unattached, and a second configuration in which the first attachment area is attached to the flashing and the second attachment area is attached to the surface. The tape is movable with the flashing as an assembly when the flashing assembly is in the first configuration. The first attachment area and the second attachment area positioned on opposite sides of the tape such that the tape extends between the surface and the bottom surface of the flashing when the tape is in the second configuration. The kit also includes a container defining an interior space to receive the flashing assembly.

A roof mount assembly mounts a structure to a roof having a rafter and a substrate supported by the rafter. The roof mount assembly includes a piece of flashing positioned on the substrate. The flashing includes a first surface, a second surface opposite the first surface and an aperture extending through the flashing. A fastener extends through the flashing aperture. A bracket is connected to the flashing via the fastener, and the bracket is sized to support at least one roof-mounted structure on the roof. A seal is positioned between the flashing aperture and the fastener. The seal is sized to form a water-tight seal with the aperture to inhibit flow of fluid through the aperture. The seal includes a first portion and a second portion, in which the first portion is positioned to abut the flashing first surface and the second portion is positioned to extend through the aperture.