Metal Buildings

Napoli Construction can adapt almost any concept into a metal building and save time and money in design and construction.

Building Basics

Designed in-house and furnished/installed for developers, contractors & clients worldwide. Metal buildings provide tremendous flexibility while accepting conventional finishes.

What is a pre-engineered building?

A pre-engineered building (PEB, pre-engineered metal building, PEMB or metal building) is a custom-built, structural steel system designed to support the wall and roof elements of a building shell or enclosure and often includes the roof and wall cladding itself.

Can a metal building have curb appeal?

Absolutely! A metal build can be designed to accept any conventional wall finish such as: exterior insulation finish systems (EFIS or Dryvit), masonry block or brick, architectural flat panels (car dealership panels), cultured stone, concrete “tilt-up” panels, glass curtain wall systems. They can also include roof extensions, soffits, canopies, mansards, parapets and vestibules.

What type of roof systems do metal buildings have?

Although metal buildings can accept conventional roofs such as TPO, PVC and EPDM, standing seem metal roofs are industry standard and can last 2 to 3 times longer!

If metal buildings are so great, why doesn’t everyone use them?

Metal buildings are great for buildings with 90 degree corners, however they are not good for curved buildings, buildings with very low roofs (< 10’) or residential structures. Until recently, they also weren’t good for highly insulated buildings, but new technology and requirements has remedied that.

What industries use metal buildings?

Industrial facilities, warehouses and distribution centers, retail stores, shopping centers, motels, auto dealerships, office complexes, airplane hangars, sports and entertainment arenas, schools, libraries, churches, medical facilities and government buildings.

What makes a metal building more economical than conventional buildings?

A few things: metal buildings can provide wide open spaces with clear spans up to 300 feet. Since there are no (or limited) interior columns, those concrete foundations are eliminated.

The flanges and webs of each column and rafter are built up from plate steel to match the required stresses at each point which is why they are tapered. Conventional steel must be design for the worst case stress.

Metal buildings are assembled much quicker and without welding which greatly reduces labor costs. Installation is by one contractor and not multiple trades (iron workers, roofers, insulators, siding companies, window and door trades, etc.).

What elements make up a metal building?

A metal building consists of primary framing (columns and rafters), secondary framing (wall girts and roof purlins), wind bracing (rod, cables, portal frames, struts). Framed openings (for doors, overhead doors, louvers, fans, etc.) and usually wall and roof panels and insulation systems… plus other accessories such as mezzanines, windows, doors, fans, vents, canopies.

The Process

It’s very simple, metal buildings are complicated! Don’t be fooled by online companies giving you a fast quote and looking for a large deposit.

Call, email or, preferably, come into our West Deptford, New Jersey office and let us help you understand the elements of metal buildings, the options available and how those options affect cost.

Because we design in-house, you’ll walk out with a 3D rendering at no cost.

Elements of a Metal Building

Design & Loading

  • Shape: length, width, height
  • Live and dead loads
  • Wind, snow and seismic loads
  • Geographic location
  • Heated, unheated, or above freezing
  • Collateral loads for HVAC, sprinklers, etc.
  • Deflection criteria/allowance
  • Connections to the foundation
  • Existing soil conditions

Drawings & Warranties

  • Column Reactions
  • Anchor Bolt Plans
  • Approval Drawings
  • Signed / Sealed Permit Drawings
  • Construction Drawings
  • Material & Workmanship Warranties
  • Weathertightness Warranties
  • Finish Coating Warranties

Wall & Roof Finishes

  • Insulated Metal Panels
  • Wall Panels
  • Interior Wall Liner Panels
  • Roof Standing Seam Panels


  • Facings / Vapor Barriers
  • Traditional / “Sag & Bag”
  • Long Tab Banded
  • Liner Systems


  • Cable / Rod Bracing
  • Portal Frames
  • Wind Struts
  • Flange bracing at columns & rafters

Curb Appeal

  • EFiS
  • Cultured Stone
  • CMU
  • Brick
  • Architectural Panels
  • Storefront

Main Frames

  • Rigid Frames
  • Tapered Columns
  • Straight Columns
  • Hybrid Columns (Supermarket / Porkchop)
  • Expandable Frames
  • Bearing Frames

Secondary Framing

  • Purlins / Eave Struts
  • Bar joists
  • Girts
  • Bypass
  • Flush
  • Inset
  • Framed Openings
  • 3-sided
  • 4-sided
  • Jamb extensions


  • Mezzanines
  • Cranes
  • Windows & Doors
  • Overhead Doors
  • Personnel Door Canopies
  • Snow Retention
  • Exhaust vents
  • Roof flashings
  • Roof Curbs
  • Skylights
  • Cupolas

Architectural Details

  • Roof extensions(with soffits)
  • Eave extensions (with soffits)
  • Canopies
  • Mansards
  • Parapets
  • Symmetrically Sloped (Gable) Roofs
  • Asymmetrical Sloped Roofs
  • Single Sloped Roofs
  • Hipped Roof
  • Dormers

We are a dealership of both
CECO Buildings and American Buildings.