A soffit panel attachment device includes a central portion, an attachment surface, a plurality of flanges, and a plurality of openings extending through the central portion. The attachment surface extends perpendicularly from the central portion at a first end of the central portion. First and second flanges extend parallel to the central portion to form a U-shaped channel sized and shaped to receive a soffit covering material. Two soffit panel attachment devices may be installed in opposing configurations such that the U-shaped channels are positioned to support opposite ends of a soffit panel material. The plurality of openings may be a grid of hexagonal or circular openings that provide airflow paths across the soffit panel material such as from an exterior space into an attic space above the soffit.

A soffit panel attachment device includes a central portion, an attachment surface, a plurality of flanges, and a plurality of openings extending through the central portion. The attachment surface extends perpendicularly from the central portion at a first end of the central portion. First and second flanges extend parallel to the central portion to form a U-shaped channel sized and shaped to receive a soffit covering material. Two soffit panel attachment devices may be installed in opposing configurations such that the U-shaped channels are positioned to support opposite ends of a soffit panel material. The plurality of openings may be a grid of hexagonal or circular openings that provide airflow paths across the soffit panel material such as from an exterior space into an attic space above the soffit.

An exterior elevated assembly with a walking surface is described which has features for facilitating inspection of the interior support frame of the assembly. The assembly includes a support frame for the walking surface, which defines an interior space and a soffit covering an underside of the support frame. The soffit provided with an opening. A vent panel is provided for covering the opening and a vent panel retention mechanism is provided for reversibly holding the vent panel in place over the opening. Methods and kits for installing a vent panel in a soffit of an exterior elevated assembly with a walking surface are also described.

An exterior elevated assembly with a walking surface is described which has features for facilitating inspection of the interior support frame of the assembly. The assembly includes a support frame for the walking surface, which defines an interior space and a soffit covering an underside of the support frame. The soffit provided with an opening. A vent panel is provided for covering the opening and a vent panel retention mechanism is provided for reversibly holding the vent panel in place over the opening. Methods and kits for installing a vent panel in a soffit of an exterior elevated assembly with a walking surface are also described.

A ventilation screed with an upper attachment flange having a top portion and a bottom portion and at least one opening in the top portion; a drip edge protruding from the bottom portion and a return leg that protrudes back from the drip edge and extends beyond the bottom portion; a drainage cavity protrusion protruding from the bottom portion above the drip edge, wherein the drainage cavity protrusion has an L-shaped drainage trough portion having at least one drainage opening in a bottom portion and a substantially vertical portion with a top end and a bottom end in communication with the bottom portion, an upper ground portion in communication with the top end of the substantially vertical portion of the L-shaped drainage trough portion extending outward from the substantially vertical portion and a drainage cavity shroud extending substantially downward from the upper ground portion.

A ventilation screed with an upper attachment flange having a top portion and a bottom portion and at least one opening in the top portion; a drip edge protruding from the bottom portion and a return leg that protrudes back from the drip edge and extends beyond the bottom portion; a drainage cavity protrusion protruding from the bottom portion above the drip edge, wherein the drainage cavity protrusion has an L-shaped drainage trough portion having at least one drainage opening in a bottom portion and a substantially vertical portion with a top end and a bottom end in communication with the bottom portion, an upper ground portion in communication with the top end of the substantially vertical portion of the L-shaped drainage trough portion extending outward from the substantially vertical portion and a drainage cavity shroud extending substantially downward from the upper ground portion.

A perforated eave trim and system for roofs is described. New shingles are typically installed on wooden strapping attached to an old or existing roof. The cavity between the old roof and the shingles is prone to build up of moisture if the cavity is inadequately ventilated. Moisture build up can lead to mold, ice buildup and damage to the roof and strapping. The perforated eave trim, and embodiments thereof disclosed herein, in conjunction with conventional roof vents provides an improved system for venting roofs.

A perforated eave trim and system for roofs is described. New shingles are typically installed on wooden strapping attached to an old or existing roof. The cavity between the old roof and the shingles is prone to build up of moisture if the cavity is inadequately ventilated. Moisture build up can lead to mold, ice buildup and damage to the roof and strapping. The perforated eave trim, and embodiments thereof disclosed herein, in conjunction with conventional roof vents provides an improved system for venting roofs.

An intumescent mesh has a flexible grid with a plurality of strands that form a series of openings in the flexible grid, and an intumescent coating applied to the flexible grid. The intumescent coating is made of an expandable graphite and a polymer-based carrier as ingredients and having an activation temperature above which the intumescent coating swells. The grid is sized such that the intumescent coating permits airflow through the flexible grid until the intumescent coating is exposed to temperatures at or above the activation temperature, whereupon the intumescent coating swells to seal the openings and prevent air flow through the flexible grid.

An intumescent mesh has a flexible grid with a plurality of strands that form a series of openings in the flexible grid, and an intumescent coating applied to the flexible grid. The intumescent coating is made of an expandable graphite and a polymer-based carrier as ingredients and having an activation temperature above which the intumescent coating swells. The grid is sized such that the intumescent coating permits airflow through the flexible grid until the intumescent coating is exposed to temperatures at or above the activation temperature, whereupon the intumescent coating swells to seal the openings and prevent air flow through the flexible grid.