Flat Roof Options — Simplified

Flat Roof Options: Compare Five Plans

Compare the owner-supplied roof plans by materials, proposed warranty and included services. Confirm the approved assembly, current price, warranty eligibility, inspection term and start date in your written proposal. A product rating is not a guarantee for every roof or storm.

Five-plan comparison

Materials, tradeoffs, warranties & price

Compare the complete membrane system, total thickness, liquid-flashed detailing, warranty coverage, included service protections and exact price change from the Protector base.

Complete comparison of the five Perkins flat roof plans
PlanFlat-roof systemProsConsPrice
01 Penny Not recommended Lower-cost plan with fewer included services

Single-ply TPO membrane — only 60 mils thick

  • Lowest listed Perkins plan price
  • Only 2-yr contractor warranty (vs. 7–12 yr Perkins on other plans)
  • Single-ply TPO — only 60 mils vs. Protector’s 240-mil two-ply system
  • No urethane liquid-flashed detailing (Protector uses Polyflash 1C)
  • Wind-mitigation report not included; ask your insurer about documentation and eligibility
  • Driveway cleaning and dedicated project manager not included
Base −$25 to −$75/SQSavings vary by roof details
02 Protector Our full-service starting point

Two-ply Polyglass — Elastobase base + SA V (80-mil) interply, heat-welded cap (240-mil min.)

  • Full Perkins Protection Plan bundle included
  • 240-mil minimum listed assembly; thickness alone does not compare performance across different systems
  • Urethane liquid-flashed details (Polyflash 1C) at every penetration
  • 7-yr Perkins / 20-yr Polyglass warranty
  • Commercial 20-yr System Warranty is an additional $2,800–$3,500/building*
Base Price
04 Premium Energy-rated + thickest system

Energy-rated deluxe three-ply — dual SA V Plus (100-mil ea.) + Bright White EnergyStar cap (360-mil min.)

  • 360-mil listed assembly; confirm the complete system specification
  • EnergyStar Bright White cap sheet reflects heat
  • 12-yr Perkins / 30-yr Polyglass warranty
  • Adds cost over Protector base price
Base +$315/SQ
05 Coastal Optional add-on for coastal homes

Add-on upgrades all metals to Aluminum — stackable with any package above

  • Corrosion-resistant aluminum metals
  • Can be added to Protector, Preferred, or Premium
  • Recommended within 1,500 ft of salt or brackish water
  • No flat per-SQ price — final cost depends on roof terminations, drains & penetrations*
Custom QuoteVaries by roof details