Standing-seam roof assembly bracket
A bracket for use in retro-fitting metal clad buildings to facilitate attachment of new roof or wall panels of any desired profile, directly over existing ribbed or fluted panels of various configurations. Commonly known in the trades as a sub purlin or sub girt. Generally a one piece Z shaped metal bracket with a substantially vertical web between opposed top and bottom flanges in a parallel plane. The bottom flange and adjacent lower portion of the web contain a series of notches that allow the bracket to nest onto and over existing ribbed roof or wall panels. The top flange is automatically in position, lying flat and continuous, to receive and attach the new panels thereto. An ant-roll tab further connects the web to the existing roof panel. The solid portion of lower flange is preferred to be positioned directly above the underlying substructural support system members of the existing building to assure a structurally sound attachment of bracket to the building. Pre-punched holes in the solid portion of lower flange dictate required location, number and size of fasteners to be inserted through lower rib surface of existing panel into substructural system members.
1. A bracket comprising:
a web portion having upper and lower edges and a side-facing wall;
a top flange extending outward, at least substantially, along the length of the upper edge of the web portion;
a plurality of pre-defined, downwardly open, recesses formed in the lower edge and side-facing wall of the web portion;
a plurality of bottom flanges connected to, and extending outward from, the lower edges of the web portion between the plurality of pre-defined voids;
at least one securing arm extending from the side-facing wall of the web portion within the recess and between two adjacent bottom flanges.
2. The bracket of claim 1 , wherein the web portion is substantially vertical.
3. The bracket of claim 1 , wherein the top and bottom flanges are substantially parallel.
4. The bracket of claim 1 , wherein the securing arm is integrally formed with the wall of the web portion between the upper and lower edges thereof.
5. The bracket of claim 4 , wherein the securing arm further comprises:
a proximate end adjacent the web and a distal end;
a first slot in the proximate end thereof;
a second slot near the distal end thereof; and
an aperture for receiving a mechanical fastener between the second slot and the distal end thereof.
6. The bracket of claim 1 , wherein the securing arm is attached to the web by a mechanical fastener.
7. A method of retrofitting a standing-seam roof, comprising:
providing at least one bracket comprising:
i. a web portion having upper and lower edges and a substantially side-facing wall,
ii. a top flange extending outward along substantially the length of the upper edge of the web portion;
iii. a plurality of pre-defined, downwardly open, recesses formed in the lower edge and wall of the web portion;
iv. a plurality of bottom flanges connected to, and extending outward from, the lower edges of the web portion between the plurality of pre-defined voids;
v. at least one securing arm, having a proximate end connected to the side-facing wall of the web within the recess and a distal end extending outwardly from the side-facing wall and between two adjacent bottom flanges;
positioning the at least one bracket on an existing roof panel, having a base surface connected by raised ribs to a top surface, by nesting the predefined voids of the web portion over the raised ribs and top surface of the existing roof panel;
placing the distal end of the securing arm in contact with the raised rib or top surface of the existing roof panel by bending the securing arm near its proximate end;
affixing the distal end of the securing arm to the raised ribs and top surface of the existing roof panel; positioning at least one new roofing panel on the top flange of the at least one bracket; and securing at least one new building panel to the bracket.
8. The method of claim 7 , wherein the bracket is substantially Z-shaped.
9. The method of claim 7 , further comprising disposing a layer of insulative material between the at least one existing building panel and the at least one new building panel.
10. A bracket comprising:
a web portion having an upper edge, a lower edge and a side-facing wall;
a top flange extending outward, at least substantially, along the length of the upper edge of the web portion;
a plurality of pre-defined, downwardly open, voids formed in the lower edge and side-facing wall of the web portion;
a plurality of bottom flanges connected to, and extending outward from, the lower edges of the web portion between the plurality of pre-defined voids;
at least one securing arm extending from the side-facing wall of the web portion adjacent at least one of the plurality of pre-defined voids; and
the at least one securing arm having a proximate end connected to the side-facing wall of the web at a periphery of one of the predefined voids, and a distal end extending outwardly from the side-facing wall above and between, the adjacent bottom flanges on either side of at least one of the predefined voids when viewed from the top.
11. The bracket of claim 10 , wherein the securing arm further comprises:
a proximate end adjacent the web and a distal end;
a first slot in the proximate end thereof;
a second slot near the distal end thereof; and
an aperture for receiving a mechanical fastener between the second slot and the distal end thereof.
12. The bracket of claim 10 , wherein the securing arm extends from, and is coplanar with, the side-facing wall of the web portion into the predefined void.
13. The bracket of claim 10 , wherein the securing arm extends from the side-facing wall of the web portion in substantially the opposite direction as the top flange.
14. The bracket of claim 1 , wherein the at least one securing arm extends outwardly from the side-facing wall within at least one of the predefined voids above and between, the adjacent bottom flanges on either side of at least one of the predefined voids when viewed from the top.