Roofing system and method

• US 8,151,522 B2
• Filed: 06/22/2011
• Issued: 04/10/2012
• Est. Priority Date: 03/19/2010
• Status: Active Grant

• Current Assignee: Rillito River Solar LLC (Esdec B.V.)
• Original Assignee: Vermont Slate & Copper Services, Inc.
• Inventors: Stearns, Brian Cecil, Lounsbury, Douglas Timothy
• Primary Examiner(s): Katcheves, Basil
• Assistant Examiner(s): STEPHAN, BETH A
• Application Number:
  US13/166,378
• Publication Number:
  US 20110247279A1
• Time in Patent Office: 293 Days
• Field of Search: 52/58, 52/60, 52 24- 26, 526/98, 523/021, 523/026, 523/027, 521/731, 521/733, 52/97, 524/08, 527/414, 126/621, 126/623, 136/244, 248/237, 248/500, 248/505, 285/42, 285/43, 411/439, 411/542
• US Class Current: 52/58
• CPC Class Codes: E04B 1/66 Sealings damp-proof courses E04B1/644; fire-proof sealings E04B1/948; additions of anti-leak properties to plaster C04B; bituminous sealing masses C08L95/00; sealings for hydraulic engineering work in general E02B3/16; against ground humidity or ground water E02D31/02; coverings against rain or other precipitations of the atmosphere E04D; composition of material or manufacture of sealing foils, see the relevant classes for these foils
• CPC Class Codes: E04D 13/04 Roof drainage; Drainage fittings in flat roofs, balconies or the likegutter tiles E04D1/30; gutter slabs E04D3/40; vessels for collecting rainwater E03B3/03; street gullies E03F5/04
• CPC Class Codes: E04D 13/10 Snow traps ; Removing snow from roofs; Snow melters
• CPC Class Codes: E04D 13/14 Junctions of roof sheathings to chimneys or other parts extending above the roof
• CPC Class Codes: E04D 13/1407 for flat roofs
• CPC Class Codes: E04D 13/147 specially adapted for inclined roofs trays for cavity walls E04B1/70
• CPC Class Codes: F16B 43/001 for sealing or insulation
• CPC Class Codes: F16B 5/0258 using resiliently deformable sleeves, grommets or inserts F16B43/001 takes precedence
• CPC Class Codes: F24S 2025/021 Sealing means between support elements and mounting surface
• CPC Class Codes: F24S 25/61 for fixing to the ground or to building structures
• CPC Class Codes: H02S 20/23 specially adapted for roof structures
• CPC Class Codes: Y02B 10/10 Photovoltaic [PV]
• CPC Class Codes: Y02B 10/20 Solar thermal
• CPC Class Codes: Y02E 10/47 Mountings or tracking
• CPC Class Codes: Y02E 10/50 Photovoltaic [PV] energy

Abstract

A roof mounting system can include a roof substrate and flashing supportable on the substrate and including an outwardly extending projection having a concave interior side and an aperture extending through the projection between top and bottom surfaces of the flashing. A seal can extend through the aperture and contact at least a portion of the top surface and at least a portion of the bottom surface. The seal can be conformable with the concave interior side and can define a seal aperture substantially aligned with the flashing aperture. A mounting bracket can be supportable on the flashing and can define an aperture sized to receive at least a portion of each of the seal and the projection. A fastener can extend through the mounting bracket aperture, seal aperture, and flashing aperture to inhibit fluid flow through the flashing aperture.

Claims

1. A roof mounting system comprising:

a roof substrate;

a base member supportable on the roof substrate, the base member defines a first surface positioned substantially adjacent the roof substrate and a second surface spaced from the roof substrate, the base member defining a surface area, the base member including a frustoconical protrusion extending away from the roof substrate along an axis, the base member defining a substantially constant thickness, such that the first surface forms a frustoconical recess and the second surface forms the frustoconical protrusion, the base member defines a first aperture extending along the axis from the first surface to the second surface, the first aperture substantially centrally positioned in the frustoconical protrusion;

a flexible membrane coupled to the roof substrate and coupled to the base member, the flexible membrane positioned substantially adjacent the base member first surface, the flexible membrane defining a surface area, wherein the flexible membrane surface area is greater than the surface area of the base member, the flexible membrane is deformable to substantially conform to the frustoconical protrusion of the base member, the flexible membrane defining a second aperture extending therethrough, the second aperture is substantially aligned with the first aperture, such that the second aperture extends along the axis;

a bracket coupled to the flexible membrane, the bracket defining a first surface spaced from the flexible membrane and a second surface positioned substantially adjacent the flexible membrane, the bracket defining an aperture extending from the first surface to the second surface, the bracket aperture being tapered and defining a first aperture diameter at the first surface of the bracket and a second aperture diameter at the second surface of the bracket, wherein the second aperture diameter is greater than the first aperture diameter, the frustoconical protrusion extends at least partially into the tapered aperture, and the flexible membrane is deformed by the frustoconical protrusion, such that the flexible membrane extends into the tapered aperture, the bracket is operable to support a roof-mounted assembly, the tapered aperture is substantially aligned with the first aperture and the second aperture, such the tapered aperture extends along the axis; and

a first fastener defining a longitudinal axis, wherein the longitudinal axis is oriented along the axis, the first fastener extending through the first aperture, the second aperture and the tapered aperture to couple the base member to the flexible membrane and to the bracket,

wherein the base member, the flexible membrane and the bracket are coupled to the roof substrate by at least one of the first fastener and a second fastener,

wherein the flexible membrane is at least partially compressed to form a substantially water-tight seal between the base member and the bracket.

2. The roof mounting system of claim 1, wherein the first fastener is a bolt that extends through the first aperture of the base member, the second aperture of the flexible membrane and the tapered bracket aperture.

3. The roof mounting system of claim 2, wherein the bolt further extends through the roof substrate.

4. The roof mounting system of claim 2, further comprising a washer positioned between the bracket and the bolt, such that the washer is operable to form a substantially water-tight seal between the bracket and the bolt.

5. The roof mounting system of claim 1, wherein the base member, the flexible membrane and the bracket are coupled to the roof by the second fastener.

6. The roof mounting system of claim 1, wherein the base member is substantially circular and wherein the frustoconical protrusion is substantially centrally located on the circular base member.

7. The roof mounting system of claim 1, wherein the first fastener urges the membrane to deform to the contour of the frustoconical protrusion.

8. The roof mounting system of claim 1, wherein the bracket defines a surface area, wherein the surface area of the bracket is less than the surface area of the flexible membrane.

9. A method of mounting a roof mountable fixture to a roof, the method comprising:

positioning a base member on a roof substrate;

positioning a flexible membrane over the base member on the roof substrate;

deforming the flexible membrane across a frustoconical protrusion of the base member;

positioning a bracket on the deformed flexible membrane;

aligning a bracket aperture with a base member aperture;

inserting a fastener through the bracket aperture, the flexible membrane and the base member aperture;

tightening the fastener to compress the flexible membrane between the base member and the bracket;

forming a seal between the base member and the bracket with the flexible membrane;

securing the base member, the flexible membrane and the bracket to the roof substrate; and

securing the roof mountable fixture to the bracket.

10. The method of claim 9, wherein securing the base member, the flexible membrane and the bracket to the roof substrate includes inserting the fastener into the roof substrate.

11. The method of claim 9, wherein forming a seal between the base member and the bracket with the flexible membrane includes compressing the flexible membrane between the base member and the bracket while tightening the fastener.

12. A roof mounting system comprising:

a roof substrate;

a flashing defining a first surface adjacent the roof substrate and a second surface spaced from the roof substrate, the flashing including a frustoconical protrusion extending away from the roof substrate, the flashing defining a substantially constant thickness, such that the first surface forms a frustoconical recess and the second surface forms the frustoconical protrusion, the flashing defines a first aperture extending along an axis from the first surface to the second surface, the first aperture substantially centrally positioned in the frustoconical protrusion;

a flexible membrane coupled to the roof substrate and coupled to the flashing, the flexible membrane positioned substantially adjacent the flashing second surface, the flexible membrane is deformable to substantially conform to the frustoconical protrusion of the flashing, the flexible membrane defining a second aperture extending therethrough, the second aperture is substantially aligned with the first aperture, such that the second aperture extends along the axis;

a bracket coupled to the flexible membrane and to the flashing, the bracket defining a first surface spaced from the flexible membrane and a second surface adjacent the flexible membrane, the bracket defining an aperture extending from the first surface of the bracket to the second surface of the bracket, the bracket aperture being tapered and defining a first aperture diameter at the first surface of the bracket and a second aperture diameter at the second surface of the bracket, wherein the second aperture diameter is greater than the first aperture diameter, the frustoconical protrusion extends at least partially into the tapered aperture, and the flexible membrane is deformed by the frustoconical protrusion, such that the flexible membrane extends into the tapered aperture, the bracket is operable to support a roof-mounted assembly, the tapered aperture is substantially aligned with the first aperture and the second aperture, such the tapered aperture extends along the axis; and

a fastener defining a longitudinal axis, wherein the longitudinal axis is oriented along the axis, the fastener extending through the first aperture, the second aperture and the tapered aperture to couple the flashing to the flexible membrane and to the bracket,

wherein the flashing, the flexible membrane and the bracket are coupled to the roof substrate by at least one of the fastener and a second fastener,

wherein the flexible membrane is at least partially compressed to form a substantially water-tight seal between the flashing and the bracket.

13. The roof mounting system of claim 12, wherein the fastener is a bolt extending through the first aperture, the second aperture and the bracket aperture.

14. The roof mounting system of claim 13, wherein the bolt further extends through the roof substrate.

15. The roof mounting system of claim 13, further comprising a washer positioned between the bracket and the bolt, such that the washer is operable to form a substantially water-tight seal between the bracket and the bolt.

16. The roof mounting system of claim 12, wherein the flashing defines a surface area and the flexible membrane defines a surface area, wherein the flashing surface area is greater than the flexible membrane surface area.

17. The roof mounting system of claim 12, wherein the membrane is substantially circular and defines a diameter, and wherein the membrane diameter is greater than the first aperture diameter and greater than the second aperture diameter.

18. The roof mounting system of claim 12, wherein the fastener urges the membrane to deform to the contour of the frustoconical protrusion.

19. A method of mounting a roof mountable fixture to a roof, the method comprising:

positioning a flashing on a roof substrate;

positioning a flexible membrane on a bracket, such that the flexible membrane covers a bracket aperture;

coupling the flexible membrane to the bracket, wherein the flexible membrane covers the bracket aperture;

positioning the bracket and the flexible membrane on the flashing;

aligning the bracket aperture with a flashing aperture, wherein the bracket aperture is tapered and the flashing aperture extends through a frustoconical protrusion;

inserting the frustoconical protrusion of the flashing into the tapered aperture of the bracket;

deforming the flexible membrane over the frustoconical protrusion of the flashing, such that the flexible membrane at least partially abuts the tapered aperture of the bracket;

inserting a fastener through the bracket aperture, the flexible membrane and the flashing aperture;

tightening the fastener to compress the flexible membrane between the flashing and the bracket;

forming a seal between the flashing and the bracket with the flexible membrane;

securing the flashing, the flexible membrane and the bracket to the roof substrate; and

securing the roof mountable fixture to the bracket.

20. The method of claim 19, wherein securing the flashing, the flexible membrane and the bracket to the roof substrate includes inserting the fastener into the roof substrate.

21. The method of claim 19, wherein forming a seal between the flashing and the bracket with the flexible membrane includes compressing the flexible membrane between the flashing and the bracket while tightening the fastener.

22. A roof mounting system comprising:

a roof substrate;

a flashing defining a first surface adjacent the roof substrate and a second surface spaced from the roof substrate, the flashing defining a substantially constant thickness, the flashing defines a flashing aperture extending along an axis from the first surface to the second surface;

a bracket coupled to the flashing, the bracket defining a first surface spaced from the flashing and a second surface adjacent the flashing, the bracket defining a bracket aperture extending from the first surface of the bracket to the second surface of the bracket, the bracket aperture being tapered and defining a first aperture diameter at the first surface of the bracket and a second aperture diameter at the second surface of the bracket, wherein the second aperture diameter is greater than the first aperture diameter, the bracket aperture defining a height between the first surface of the bracket and the second surface of the bracket, the bracket is operable to support a roof-mounted assembly, the tapered aperture is substantially aligned with the flashing aperture, such the tapered aperture extends along the axis;

a seal coupled to the flashing adjacent the flashing aperture, the seal defining a seal aperture extending therethrough, the seal aperture is substantially aligned with the flashing aperture and the tapered aperture, such that the seal aperture extends along the axis, the seal defining a first surface adjacent the flashing and a second surface adjacent the bracket, the seal abutting the flashing adjacent the first surface of the seal, such that the seal forms a substantially water-tight seal with the flashing, the seal abutting the tapered bracket aperture adjacent the second surface of the seal, such that the seal forms a substantially water-tight seal with the tapered bracket aperture, wherein the seal abuts the tapered bracket aperture over a length, wherein the length is greater than the height of the bracket aperture; and

a fastener defining a longitudinal axis, wherein the longitudinal axis is oriented along the axis, the fastener extending through the flashing aperture, the seal aperture and the tapered aperture to couple the flashing to the seal and to the bracket,

wherein the flashing, the flexible membrane and the bracket are coupled to the roof substrate by at least one of the fastener and a second fastener, and

wherein the seal is at least partially compressed to form a substantially water-tight seal between the flashing and the bracket.

23. The roof mounting system of claim 22, wherein the flashing including a frustoconical protrusion extending away from the roof substrate, such that the first surface of the flashing forms a frustoconical recess and the second surface of the flashing forms the frustoconical protrusion, wherein the flashing aperture is substantially centrally positioned in the frustoconical protrusion.

24. The roof mounting system of claim 23, wherein the frustoconical protrusion extends at least partially into the tapered aperture, and wherein the seal is compressed between the frustoconical protrusion and the tapered aperture.

25. The roof mounting system of claim 23, wherein the fastener urges the seal to deform to the contour of the frustoconical protrusion.

26. The roof mounting system of claim 22, wherein the fastener is a bolt extending through the flashing aperture, the seal aperture and the bracket aperture.

27. The roof mounting system of claim 26, wherein the bolt further extends through the roof substrate.

28. The roof mounting system of claim 26, further comprising a washer positioned between the bracket and the bolt, such that the washer is operable to form a substantially water-tight seal between the bracket and the bolt.

29. The roof mounting system of claim 22, wherein the flashing defines a surface area and the first surface of the seal defines a surface area, wherein the flashing surface area is greater than the surface area of the first surface of the seal.

30. The roof mounting system of claim 22, wherein the second surface of the seal is substantially circular and defines a diameter, and wherein the seal second surface diameter is greater than the bracket first aperture diameter and greater than the bracket second aperture diameter.

31. A method of mounting a roof mountable fixture to a roof, the method comprising:

positioning a flashing on a roof substrate;

positioning a seal on the flashing;

aligning a flashing aperture with a seal aperture;

positioning a bracket on the seal and the flashing;

aligning a tapered bracket aperture with the flashing aperture and the seal aperture;

abutting the seal against the tapered bracket aperture;

inserting a fastener through the tapered bracket aperture, the seal and the flashing aperture;

tightening the fastener to compress the seal between the flashing and the bracket;

forming a seal between the flashing and the bracket with the seal;

securing the flashing, the flexible membrane and the bracket to the roof substrate; and

securing the roof mountable fixture to the bracket.

32. The method of claim 31, wherein securing the flashing, the seal and the bracket to the roof substrate includes inserting the fastener into the roof substrate.

33. The method of claim 31, wherein forming a seal between the flashing and the bracket with the seal includes compressing the seal between the flashing and the bracket while tightening the fastener.