Profiles, gauges, finishes, coverage math, fasteners, flashing/closures, gutters, penetrations, and maintenance — the details that make a building tight and sharp. Confirm your site’s Loads & Codes first to align spans, gauges, and edge zones, or run CodeSmart™ for local criteria.
The workhorse roof/wall panel for PEMBs. Good strength-to-cost, widely available accessories, and predictable performance.
Use on roofs and walls in most regions when detailed correctly — see Cold-Formed vs Rigid Frame for structural context, and verify end/side-lap closure details per manufacturer.
Cleaner appearance for façades and higher-visibility walls. Often used vertically with concealed or minimized fasteners (system-dependent).
Tip: Plan crisp corners and openings by coordinating trim terminations early.
Higher rib for stiffness and wind resistance; great for long spans or accent walls. Fewer supports may be needed — confirm deflection against chosen framing in Cold-Formed vs Rigid Frame.
Premium roof system with concealed clips allowing thermal movement. Excellent for low-slope roofs and long life when installed to spec.
Follow clip spacing tables and seamer requirements (check with CodeSmart™). Underlayment/ice-barrier are climate-dependent — see moisture basics in Insulation 101.
Numbers vary by manufacturer — confirm spans/loads (frame type comparison at Cold-Formed vs Rigid Frame).
Lay panels so wind blows over, not into, the side-lap; confirm which edge leads. Use coverage width for takeoffs and add waste for cuts/damage — align wall lengths with slab layout so trim lands clean.
Durable metallic coating for roofs; high reflectivity, low maintenance. Expect a metallic patina; pair with proper underlayment noted in Insulation 101 for condensation control.
SMP balances cost/performance; PVDF (Kynar®) gives top-tier color retention and chalk resistance.
Use PVDF for dark/saturated colors and coastal UV; match trim coil to panel finish to avoid sheen mismatch.
Use corrosion-appropriate screws with integral washers compatible with your finish and climate. Stainless or long-life coated fasteners in coastal/industrial zones.
| Location | Concept Spacing | Notes |
|---|---|---|
| PBR to purlin/girt | Every rib at supports | Edge zones may require tighter spacing. |
| Side-laps | 12"–24" o.c. | Per manufacturer and wind zone. |
| End-laps | At each rib + sealant | Use butyl tape per spec. |
Follow stamped drawings and manufacturer manuals for exact counts/spacing — verify loads with CodeSmart™ if uncertain.
Order extras: a couple spare lengths keep terminations clean — reference manufacturer profiles.
Use butyl tape at end-laps and critical seams; compatible sealants at penetrations and trims. Don’t stretch butyl; compress evenly for a uniform seal (see moisture guidance in Insulation 101).
Size gutters for local rainfall intensity; maintain continuous slope to outlets. Provide adequate downspouts and drain away from slab edges — coordinate with Concrete Foundations 101.
Coordinate eave trim, gutter straps, and liner panels. Seal at corners and end-caps. Debris screens help where trees shed leaves/needles.
Route MEP to minimize roof penetrations; where needed, use curb kits and boots rated for your profile/slope. Flash to panel ribs per manual and maintain vapor continuity — details in Insulation 101.
Frame openings per drawings; use proper jamb/head trims, backer plates if required, and seal at fasteners. Confirm clearances against slab/grade elevations before ordering doors.
SIG200 (SMP) is cost-balanced; SIG300 (PVDF/Kynar®) offers superior fade/chalk resistance — especially for dark/saturated colors and coastal UV. Consider finish alongside condensation strategy in Insulation 101.
Note: Color names/availability vary by manufacturer. On-screen swatches are approximations — always confirm with physical chips.
Tip: For dark roofs/walls, prefer SIG300 to minimize long-term fade/chalk; for light/neutral colors inland, SIG200 is often sufficient.
Inspect sealants annually at penetrations/trim laps; re-apply compatible products. Use manufacturer-approved touch-up paint sparingly, especially on PVDF finishes.
Mixing finish systems (SMP trim with PVDF panels) or gauges without re-checking spans/loads can void warranties or cause performance issues — quick-check loads with CodeSmart™.
Both work. Vertical sheds water and hides laps; horizontal can align with architectural lines. Follow manufacturer guidance for support spacing and trim detailing.
Many systems require synthetic underlayment and ice-barrier by code/climate. Standing seam with clips often mandates specific underlayment (see framing differences in Cold-Formed vs Rigid Frame).
Disclaimer: Educational guidance only. Verify final loads, details, and energy/moisture requirements with the engineer of record and your local building department.
