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Metal roofing material and roofing method

  • US 10,724,242 B2
  • Filed: 07/11/2016
  • Issued: 07/28/2020
  • Est. Priority Date: 10/02/2015
  • Status: Active Grant
First Claim
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1. A metal roofing material that is arranged on an eave-side metal roofing material in an eave-ridge direction of a roof so as to overlap with the eave-side metal roofing material, the metal roofing material being configured to be arranged so that a depth direction of the metal roofing material is along the eave-ridge direction of the roof and a width direction of the metal roofing material is along an eave direction of the roof, the metal roofing material comprising:

  • a front substrate made of a metal sheet and comprising a body portion formed in a box shape;

    a back substrate arranged on the back side of the front substrate so as to cover an opening of the body portion;

    a core material filled between the body portion and the back substrate; and

    at least one plate reinforcing member that is embedded in the core material at a position closer to the back substrate than a top plate of the body portion or that is disposed in contact with the outer surface of the back substrate,wherein the at least one plate reinforcing member includes a base portion extending along the depth direction and the width direction, a plurality of burring holes each comprising a hole opening and a vertical wall portion extending from the base portion in a height direction of the body portion and standing from an edge of the hole opening, the vertical wall portion being in contact with a back surface of the front substrate.

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