Mark Horton Architecture designed a private residence with a standing seam roof system that clads its sloped roof and continues down vertical walls. Moreover, a metal-clad upper level rotates on a masonry, solid-looking lower level.
“On a relatively modest and odd-shaped parcel skewed to the street, a single-family home moderates between organizing axes by shifting the building grid between levels,” says Mark Horton, principal at Mark Horton Architecture. “A central interior helical staircase set at a rotation point of an orthogonal structure of the house allows a shift to work seamlessly. A three-story staircase atrium acts as the central element through which all the circulation feeds, allowing a spinoff at this point to feel comfortable, effortless, and almost invisible.”
Horton says the specification of the standing seam roof system had several purposes. “Most important, the metal cladding was selected to contrast and juxtapose with the exterior material of the main floor below, and to reinforce the geometric shift of the upper level. The color, texture, and materiality of the metal cladding all play a role in this. As well, the upper floor is to be read as a lighter mass that rotates on the solid lower-level construction, something the metal siding reinforces.”
On the house’s second level, Custom Copper and Sheet Metal Roofing Inc. installed AEP Span’s Design Span hp structural standing seam roof system coated in Dura Tech 5000 Coal Black Rawhide.
“Color, texture, and materiality all played roles in the selection of the metal siding used in this project,” says Horton. “In particular, the use of the specific AEP Span product, which is a matte flat, non-reflective material, was key to the aesthetics of this project. A standard metal roofing system with a smooth, reflective surface was not wanted.
“The finish of this project works well with the stone finish of the first floor. The metal finish conditions of tight corners, taut skin, and dark appearance also work well with the window system installed, particularly where windows wrap the building corners.”
General contractor: Buildhome Construction Inc., Campbell, Calif., buildhomeconstruction.com
Architect: Mark Horton Architecture, San Francisco, Calif., mh-a.com
Installer: Custom Copper and Sheet Metal Roofing Inc., Burlingame, Calif., ccsmr.com
Metal roof/wall panels: AEP Span, a division of ASC Profiles LLC, Tacoma, Wash., aepspan.com
