← Roof (Google Solar)

Quote e85179be

Generated 6/24/2026, 11:02:37 PM · locked to RÜFI's current engineering standards

View proposal
Big three — confirm before you bid
Membrane
270,695.25 SF
2,707 squares
Insulation
0 SF
0 squares
Edge metal
3,010 LF
perimeter

Membrane, insulation, and edge metal are the cost drivers that win or lose the job — confirm these first. Insulation is sold by the square (100 SF): a per-SF price × 100 = the per-square price.

Cost summary (engine base)
Materials$454,862.60
Labor$836,381.73
Non-permit expenses$110,318.33
Base cost$1,401,562.66
Permits (circular)$41,222.43
Total cost$1,442,785.09
Contract value$2,061,121.56
Gross profit$618,336.47
GP %30%
Benchmarks
Cost / SF$5.60
Sell / SF$7.99
Billable rate ($/MH)$209.47
Combined rate ($/MH)$131.23
Labor hours9839.79
Crew size / days5 / 245.99
Comparative pricing

Selling price at every gross-profit margin, from this quote's own cost stack. The highlighted row is the current bid — price up or down without re-running the estimate.

GP marginSelling price$ / SFBillable $/MH
25%$1,919,948.85$7.45$195.12
30% · this bid$2,061,121.56$7.99$209.47
35%$2,224,702.63$8.63$226.09
40%$2,416,487.34$9.37$245.58
45%$2,644,457.85$10.26$268.75
50%$2,919,922.21$11.33$296.75
Materials — $454,862.60
DescriptionQtyUnitUnit costTotalVarianceOverride
New 60-mil mechanically attached EPDM membrane
show math
rule: epdm-v1.field.membrane
{
  "areaSf": 257805,
  "wasteFactor": 1.05
}
270695.25SF$0.80$216,556.20—
Plates and fasteners
show math
rule: epdm-v1.field.fasteners
{
  "areaSf": 257805
}
257805SF$0.18$46,404.90—
0.5" HD cover board
show math
rule: epdm-v1.install.cover-board
{
  "areaSf": 257805,
  "thicknessIn": 0.5
}
257805SF$0.70$180,463.50—
Edge metal w/ cleat and fasteners
show math
rule: epdm-v1.object.edge.metal
{
  "linearFt": 3010
}
3010LF$3.80$11,438.00—
Labor — $836,381.73
DescriptionQtyUnitUnit costTotalVarianceOverride
Install field membrane (257805 SF @ 1.6 MH/100 SF)
show math
rule: epdm-v1.field.lay-labor
{
  "areaSf": 257805,
  "mhPer100Sf": 1.6
}
4124.88HR$85.00$350,614.80—
Install cover board (257805 SF @ 0.6 MH/100 SF)
show math
rule: epdm-v1.install.cover-board-labor
{
  "areaSf": 257805,
  "mhPer100Sf": 0.6
}
1546.83HR$85.00$131,480.55—
Tear off existing roof (257805 SF @ 1.5 MH/100 SF)
show math
rule: epdm-v1.existing.tearoff-labor
{
  "areaSf": 257805,
  "mhPer100Sf": 1.5
}
3867.08HR$85.00$328,701.38—
Install edge metal (3010 LF @ 0.1 hr/LF)
show math
rule: epdm-v1.object.edge.install-labor
{
  "hrPerLf": 0.1,
  "linearFt": 3010
}
301HR$85.00$25,585.00—
Expenses — $151,540.76
DescriptionQtyUnitUnit costTotalVarianceOverride
Freight (3% of material cost)
show math
rule: epdm-v1.expense.freight
{
  "rate": 0.03,
  "materialCost": 454862.6
}
1LS$13,645.88$13,645.88—
Refuse (52 x 30yd dumpster)
show math
rule: epdm-v1.expense.refuse
{
  "dumpsters": 52,
  "tearOffSf": 257805,
  "perDumpster": 450,
  "sfPerDumpster": 5000
}
1LS$23,400.00$23,400.00—
20-year manufacturer warranty ($0.07/SF)
show math
rule: epdm-v1.expense.warranty
{
  "perSf": 0.07,
  "areaSf": 257805
}
1LS$18,046.35$18,046.35—
Small tools (3% of labor cost)
show math
rule: epdm-v1.expense.small-tools
{
  "rate": 0.03,
  "laborCost": 836381.73
}
1LS$25,091.45$25,091.45—
Sales tax on materials (6.625%)
show math
rule: epdm-v1.expense.tax
{
  "taxRate": 0.06625,
  "materialCost": 454862.6
}
1LS$30,134.65$30,134.65—
Permits (2% of contract value, solved algebraically)
show math
rule: epdm-v1.expense.permits
{
  "baseCost": 1401562.66,
  "targetGp": 0.3,
  "permitRate": 0.02,
  "contractValue": 2061121.56
}
1LS$41,222.43$41,222.43—