Heritage Door Weight Calculator

298 or Garaga base · v2.4 · trim table + strut weights + glass panes

Style

Base

Width (ft)

Height (ft)

Struts

Strut type

Windows

Window type

Glass panes

Total finished weight

—

Spring sizing weight

—

rounded up to nearest 5 lb

Component	lb
Face + sections (base)	—
Hardware (rollers/hinges/screws)	—
Struts (—)	—
Trim board (style)	—
3.5" board (— ft)	—
5.5" board (— ft)	—
Glass (—)	—
Paint	—
Seals	3.0
TOTAL	—

Parameters (editable)

3.5" lb/ft

5.5" lb/ft

OHD strut lb/ft

Garaga strut lb/ft

Garaga face +lb

Paint lb/gal

Seals lb

Garaga hw @9ft

OHD hw @9ft

Hardware lb/ft

Old flat hw backed out

Full reference table (298, no glass, standard struts)

Green = anchored on a triple-weighed door. Grey = estimated.

v2.4: Glass panes added — double pane is Garaga-only (greys out on 298) and adds 5.4 lb per M window, 6.1 lb per XL. SM glass is single-pane in both models.
v2 changes: Struts now scale with width (OHD 0.375 lb/ft, Garaga 0.6875 lb/ft). Trim table updated with confirmed measurements for all 8 widths × 4 styles × 7ft and 8ft heights. SM window added (32×11⅛", used on 14ft doors). Paint and seals included in total. Strut count corrected: 3 struts at 12ft+. OHD sections: still uses area-scaled face weight — section model under calibration. Garaga within ~5 lb on all confirmed doors.

Torsion Spring Sizing TSCW math · flat track 2.063″ arm · high-lift 2.275″ arm (drum book confirmed)

Pulled from calculator → — Weight — lb · Height — in

Track type

Weight source

Number of springs

High-point allow (in)

Moment arm CLOSED (in)

Moment arm OPEN (in)

Turns override (0=auto)

Modulus E (psi)

Inside diameter ID (in)

Target cycle life

Min length (in)

Max length (in)

Cable travel / high point (in)—

Total spring turns—

Balancing torque (in-lb)—

Required TOTAL IPPT—

Required IPPT per spring—

Max moment / spring (in-lb)—

Target max stress (% tensile)—

Recommended spring

—

Spring selection table (length at each wire size)

Wire	Tensile	Mean D	Req Len	Coils	C	Ki	Stress	%Tens	Target	Fits

Edit tensile in code / your supplier data for exact stress %. IPPT, torque, turns and length are exact.

Calibrate to your drums — average across doors you've personally balanced

Door (label)	Weight	Height in	Allow	Wire	ID	Length	#Spr	Arm (in)

Average moment arm (your verified rows)—

Drum book: flat track2.063″

Drum book: high-lift2.275″

Add doors you've balanced yourself — real measured weight + the spring that actually worked — and the arm averages across them. Drum book values: flat 2.063″, high-lift 2.275″. If your calculated average diverges significantly from these, recheck your spring measurements or weigh the door again.

Diagnose an installed spring — why a door is out of balance

Wire dia (in)

Inside dia (in)

Length (in)

# springs

IPPT per installed spring—

Total installed IPPT—

Weight these springs balance (lb)—

Imbalance vs pulled weight (lb)—

Imbalance (% of weight)—

Negative imbalance = OVER-sprung; positive = UNDER-sprung. Past ~1–2% winding can't fix it.

Anchored doors: 9×7, 8×8, 16×7, 16×8. Verify & round up when borderline.