LiteSpan Insulated Panel Estimator
Panel count & length · indicative weight · thermal R/U · fixing & flashing checklist · Technopol SA
Roof / wall area
Run length, L
m
Width to cover, W
m
Plan area A = L × W =
600
m². “L” is the panel run (slope) length; “W” is measured across the panel cover width.
Panel selection
Profile
990 IBR — EPS roof (990 mm cover)
990 SS Standing Seam — EPS roof (990 mm cover)
StoneWool DPR roof (990 mm cover)
Flat / T&G panel (1145 mm cover)
Core
FRCel EPS — fire-retarded
StoneWool — 120 kg/m³
Technopol PIR 32 — 32 kg/m³
Core thickness
Fixing layout
Number of purlin / support lines, n
s
lines
Support lines crossed by each panel run (design span governs spacing — have an engineer confirm; min bearing 50 mm).
Steel skin thickness (PIR weight only)
mm
Used only for the indicative PIR-panel weight (2 skins + core). Roof skins 0.3–0.58 mm; StoneWool ≥0.5 mm.
1 · Panel count & linear metres
Panels across width, N
–
Linear metres of panel
–
Cover width used
–
Panel coverage area
–
2 · Indicative panel weight
Weight per m²
–
Total panel weight (as supplied)
–
3 · Thermal performance
Thermal resistance, R
–
Thermal transmittance, U
–
4 · Fixing & flashing checklist
Primary fasteners
–
Side-lap stitching screws
–
Perimeter flashing screws
–
Gutter brackets
–
Disclaimer.
Indicative estimate for early take-off and comparison only — not a construction schedule, structural design or fire rating. Panel counts assume simple runs; add for cutting waste, openings, end-laps (150 mm min) and non-rectangular geometry. Cover widths, R/U values, StoneWool panel weights and per-support fastener rules are taken from Technopol LiteSpan brochures / CAD details; EPS panel self-weight, PIR panel data and any fire-resistance rating are
not
established in those sources and are flagged above — confirm with Technopol before ordering. EPS is combustible; the only current reaction-to-fire claim on FR EPS is SANS 53501-1 Class B-s1,d0 (not a fire-resistance rating). © Technopol SA (Pty) Ltd · Leaders in EPS since 1993 · info@technopol.co.za · www.technopol.co.za · (011) 363-2780/1/2