Insulative metallic channel and construction assembly

1. A method of constructing an acoustically dampening construction assembly, comprising:

determining that a construction assembly will need to provide some amount of acoustic dampening;

choosing a metallic channel both for providing structural support to the construction assembly and for dampening sound passing through the construction assembly, the metallic channel comprising:

an elongated web,

at least one elongated flange extending transversely from the web, the at least one elongated flange comprising first and second continuous ridges along the length of the at least one elongated flange, the at least one elongated flange further comprising an offset portion laterally spaced inwardly from the first and second ridges, the offset portion bordered by the first and second continuous ridges and spanning approximately the entire width of the at least one elongated flange along the length of the metallic channel, and

an insulative material disposed on the offset portion of the at least one elongated flange, wherein the insulative material has an outer surface which is substantially flush with the first and second ridges and wherein the insulative material substantially fills the area between the outer surface and the offset portion, and wherein the insulative material comprises at least one material of the group consisting of foam, foam tape, spray-in insulation, expanded insulation, fibrous insulation, polystyrene, polyurethane, polyisocyanurate, aerogel, ceramic insulation, and porous foam insulation; and

causing the metallic channel to be installed in the construction assembly such that the first and second ridges contact an inner edge of a planar construction component with the offset portion laterally spaced apart from the planar construction component.

2. The method of claim 1 , wherein the construction assembly is a wall.

3. The method of claim 1 , wherein the construction assembly is a ceiling.

4. The method of claim 1 , wherein the metallic channel further comprises:

an insulative material covering the offset portion of the at least one elongated flange.

5. The method of claim 1 , wherein the offset portion has a cross-sectional shape selected from the group consisting of: triangular, trapezoidal, arcuate, and U-shaped.

6. The method of claim 1 , wherein the insulative material is configured to resist deformation of a wall component when the wall component is in contact with at least one of the first and second ridges.

7. An insulative structural metallic channel, comprising:

an elongated web;

at least one elongated flange extending transversely from the web, the at least one elongated flange comprising first and second ridges along the length of the at least one elongated flange, the at least one elongated flange further comprising an offset portion laterally spaced inwardly from the first and second ridges, the offset portion bordered by the first and second ridges and spanning approximately the entire width of the at least one elongated flange along the length of the metallic channel; and

an insulative material disposed on and substantially covering the offset portion of the at least one elongated flange, wherein the insulative material has an outer surface which is substantially flush with the first and second ridges and wherein the insulative material substantially fills the area between the outer surface and the offset portion, and wherein the insulative material comprises at least one material of the group consisting of foam, foam tape, spray-in insulation, expanded insulation, fibrous insulation, polystyrene, polyurethane, polyisocyanurate, aerogel, ceramic insulation, and porous foam insulation.

8. The insulative metallic channel of claim 7 , wherein the insulative material comprises at least one material of the group consisting of foam and foam tape.

9. The insulative metallic channel of claim 7 , wherein the insulative material comprises spray-in insulation.

10. The insulative metallic channel of claim 7 , wherein the insulative material comprises at least one material of the group consisting of expanded insulation and fibrous insulation.

11. The insulative metallic channel of claim 7 , wherein the insulative material comprises at least one material of the group consisting of polystyrene, polyurethane, polyisocyanurate, and aerogel

12. The insulative metallic channel of claim 7 , wherein the elongated web and the at least one elongated flange comprises a material selected from the group consisting of: galvanized strip steel, uncoated steel, stainless steel, and aluminum.

13. The insulative metallic channel of claim 7 , wherein the elongated web and the at least one elongated flange are formed from a single integral piece of metal.

14. The insulative metallic channel of claim 7 , wherein the offset portion has a cross-sectional triangular shape.

15. The insulative metallic channel of claim 7 , wherein the offset portion has a cross-sectional trapezoidal shape.

16. The insulative metallic channel of claim 7 , wherein the offset portion has a cross-sectional arcuate shape.

17. The insulative metallic channel of claim 7 , wherein the offset portion has a cross-sectional U shape.

18. The insulative structural metallic channel of claim 7 , wherein the insulative material is configured to resist deformation of a wall component when the wall component is in contact with at least one of the first and second ridges.

19. A construction assembly, comprising:

a first planar construction component;

a first metallic channel comprising:

an elongated web,

at least one elongated flange extending transversely from the web, the at least one elongated flange comprising first and second continuous ridges along the length of the at least one elongated flange, the at least one elongated flange further comprising an offset portion laterally spaced inwardly from the first and second ridges, the offset portion bordered by the first and second ridges and spanning approximately the entire width of the at least one elongated flange along the length of the first metallic channel, and

an insulative material disposed on the offset portion of the at least one elongated flange, wherein the insulative material has an outer surface which is substantially flush with the first and second ridges and wherein the insulative material substantially fills the area between the outer surface and the offset portion, and wherein the insulative material comprises at least one material of the group consisting of foam, foam tape, spray-in insulation, expanded insulation, fibrous insulation, polystyrene, polyurethane, polyisocyanurate, aerogel, ceramic insulation, and porous foam insulation; and

a fastener connecting the first planar construction component against the first and second ridges of the at least one elongated flange of the first metallic channel, the fastener extending through the first planar construction component, through the insulative material, and through the at least one elongated flange to connect the first planar construction component to the at least one elongated flange.

20. The construction assembly of claim 19 , further comprising:

a bottom metallic runner having a substantially flat face and at least one substantially flat flange extending transversely from the flat face, wherein the first metallic channel is disposed transverse to the bottom metallic runner.

21. The construction assembly of claim 19 , wherein the insulative material substantially fills the space between the offset portion and the first planar construction component.

22. The construction assembly of claim 19 , further comprising:

a second planar construction component connected to a second elongated flange of the first metallic channel; and

a second metallic channel connected to the first and second planar construction components, wherein the first and second metallic channels are spaced apart from each other.

23. The construction assembly of claim 22 , further comprising:

an insulative material substantially filling the space bounded by the first and second metallic channels and the first and second planar construction components.

24. The construction assembly of claim 22 , further comprising:

an insulative material substantially filling the space between an offset portion of the second elongated flange and the second planar construction component.

25. The construction assembly of claim 19 , wherein the insulative material is configured to resist deformation of a wall component when the wall component is in contact with at least one of the first and second ridges.