PEB Roofing & Wall Cladding

PEB roofing and wall cladding is the metal envelope of an industrial building: single-skin sheeting or PIR and rock wool insulated panels, with skylights, ventilators, flashings and gutters. Single-skin versus insulated panel sets the heat gain, while most roof leaks come from fasteners, laps and penetrations rather than the sheet itself.

By Dhruv Agarwal · · 1 min read

What we deliver

Roof and wall sheeting, insulated sandwich panels, skylights, ventilators, flashings and gutters for PEB and industrial buildings — the envelope that decides how hot the building runs and whether it stays dry.

On an industrial building the envelope is most of the building's surface area, and the roof takes the most sun. Its specification sets the inside temperature, the lighting load and the running cost for as long as the building stands.

Scope of works

ElementWhat we deliver
Roof sheetingSingle-skin or insulated panel, fixed to purlins
Wall claddingSheeting or insulated panel on girts
InsulationPIR or rock wool panels where specified
DaylightingPolycarbonate or FRP skylight sheets
VentilationTurbo ventilators, ridge vents, louvres
RainwaterGutters, downpipes, valley details
FlashingsRidges, eaves, corners, penetrations

Where projects go wrong

  • Fastener spacing uniform across the roof. Edges and corners need closer spacing for wind uplift.
  • Laps not sealed or too short. The most common cause of industrial roof leaks.
  • Penetrations poorly flashed. Every ventilator and pipe is a potential leak.
  • Skylights without insulation strategy. They bring daylight and heat.
  • Gutters undersized. A large roof sheds a great deal of water quickly.

Why Hagerstone

Envelope experience across industrial and commercial work — our Director – Facade has led PIR panel and rock wool panel envelope projects, including 6,500 sq. m. at the Anygraphics factory in Noida — so roofing is detailed by people who handle insulated envelopes, not only sheeting.

In-house fitters and a 53-member site team, under ISO 9001 / 14001 / 45001 and 79+ quality checkpoints.

Standards referenced

Wind loading on roof and wall cladding to IS 875 (Part 3). Galvanised steel sheet to IS 277. Roof and wall assembly performance under ECBC 2017.

Standards referenced

  • IS 875 (Part 3) — Wind loads — roof and wall cladding (Bureau of Indian Standards)
  • IS 277 — Galvanised steel sheets (Bureau of Indian Standards)
  • ECBC 2017 — Building envelope — roof and wall assembly (Bureau of Energy Efficiency)

Frequently asked

Single-skin metal sheeting is the economical choice for storage sheds where temperature does not matter much. Insulated sandwich panels — PIR or rock wool between two metal skins — cost more but cut heat gain dramatically, which matters for any building with people working inside, temperature-sensitive goods, or air conditioning. The roof takes the most sun, so it is usually the first place to insulate.

Mostly at fasteners, laps and penetrations rather than through the sheet itself. Over-tightened or under-tightened screws, side laps not sealed, end laps too short for the roof slope, and poorly flashed penetrations for ventilators and pipes account for most leaks. They are installation issues, and they are avoided by detailing and supervision rather than a better sheet.

Yes. Large roofs see significant suction under wind, especially at edges, corners and ridges, and roofing failures in storms usually start there. Fastener spacing has to be closer in those zones than across the middle of the roof, based on the wind loading for the site under IS 875 Part 3.

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