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Division 15

SEC. 91.1511. REROOFING.

Los Angeles Building Code — LAMC Chapter IX · 2026-08 edition · updated 2026-09-09 · Los Angeles

(Amended by Ord. No. 187,719, Eff. 1/23/23.)

Section 1511 of the CBC is adopted by reference, except CBC Sections 1512.2.1 and 1512.3 are not adopted and, in lieu, Los Angeles Municipal Code Subsections 91.1512.2.1 and 91.1512.3 are added.

  • 91.1512.2.1. Roof Recover. The installation of a new roof covering over an existing roof covering shall be permitted where any of the following conditions occur:

  1. Where the new roof covering is installed in accordance with the roof covering manufacturer’s approved instructions.

  2. Complete and separate roofing systems, such as standing-seam metal roof panel systems, that are designed to transmit the roof loads directly to the building’s structural system and that do not rely on existing roofs and roof coverings for support, shall not require the removal of existing roof coverings.

  3. The application of a new protective coating over an existing spray polyurethane foam roofing system shall be permitted without tear off of existing roof coverings.

  • 91.1512.3. Roof Recovering. Roof covering may be applied over existing roofing in accordance to Los Angeles Municipal Code Table 1512.1.

TABLE 1512.1

ALLOWABLE REROOFS OVER EXISTING ROOFING

EXISTING
ROOFING		 NEW OVERLA
 Y ROOFING
BUILT UP ASPHALT
SHINGLE		 TILE ROOF METAL
ROOF		 MODIFIED
BITUMEN		 SPRAY POLY-
URETHANE
FORM
EXISTING
ROOFING		 NEW OVERLA
 Y ROOFING
BUILT UP ASPHALT
SHINGLE		 TILE ROOF METAL
ROOF		 MODIFIED
BITUMEN		 SPRAY POLY-
URETHANE
FORM
Built Up Yes Yes
(2:12)		 Yes
(2.5:12)		 Yes Yes Yes
Asphalt Shingle NP Yes Yes
(2.5:12)		 Yes Yes NP
Asphalt over
Asphalt		 NP Yes Yes Yes Yes NP
Tile
Roof		 NP NP NP NP NP NP
Metal
Roof		 NP NP NP Yes NP NP
Modified
Bitumen		 Yes Yes Yes
(2.5:12)		 Yes Yes NP

NP = Not Permitted.

Note: (Minimum Roof Slope)

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▸Contents — Los Angeles Building Code — LAMC Chapter IX
Los Angeles Building Code — LAMC Chapter IX
  1. Chapter IX
  2. Chapter IX — BUILDING REGULATIONS
  3. Division 1
  4. Division 2
  5. Division 3
  6. Division 4
  7. Division 5
  8. Division 6
  9. Division 7
  10. Division 8
  11. Division 9
  12. Division 10
  13. Division 11
  14. Division 12
  15. Division 13
  16. Division 14
  17. ▸Division 15
    Overview
    1. SEC. 91.1500. BASIC PROVISIONS.
    2. SEC. 91.1505. FIRE CLASSIFICATION.
    3. SEC. 91.1507. REQUIREMENTS FOR ROOF COVERINGS.
    4. SEC. 91.1511. REROOFING.
  18. Division 16
  19. Division 17
  20. Division 18
  21. Division 19
  22. Division 20
  23. Division 21
  24. Division 22
  25. Division 23
  26. Division 24
  27. Division 25
  28. Division 26
  29. Division 27
  30. Division 28
  31. Division 29
  32. Division 30
  33. Division 31
  34. Division 32
  35. Division 33
  36. Division 34
  37. Division 35
  38. Division 61
  39. Division 62
  40. Division 63
  41. Division 67
  42. Division 70
  43. Division 71
  44. Division 72
  45. Division 82
  46. Division 83
  47. Division 85
  48. Division 88
  49. Division 89
  50. Division 90
  51. Division 91
  52. Division 92
  53. Division 93
  54. Division 94
  55. Division 95
  56. Division 96
  57. Division 5 — REGISTRATION
  58. Division 16A
  59. Division 17
  60. Division 18
  61. Division 19
  62. Division 20
  63. Division 21
  64. Division 17
  65. Division 18
  66. Division C
  67. Division D

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