Membrane, Insulation & Sheet Metal Takeoffs
The roof is your building's first defense. We deliver forensic takeoffs for single-ply membranes, tapered insulation, flashing, and sheet metal — eliminating costly re-orders and field-fit delays.
Technical Precision in Roofing Estimating
Welcome to F&K Estimatings, your precision partner for roofing estimating services. Roofing systems represent one of the largest single-trade cost centers in commercial construction, and errors in membrane or insulation quantities can lead to expensive restocking fees, project delays, and water intrusion liability. We provide the measurement accuracy needed to order once and install with confidence.
Our roofing estimators are experienced across all major roofing systems and manufacturers. We digitize roof plans to extract exact square footage for membrane, insulation board counts by thickness, and complete flashing and sheet metal profiles. Each takeoff is organized by roof area, slope direction, and system type for seamless procurement and field installation.
Single-Ply & Built-Up Membrane Systems
We provide exact square footage for TPO, PVC, EPDM, modified bitumen, and BUR systems, separated by membrane thickness and color. Our takeoffs account for membrane seams, overlap allowances, and termination bars at perimeters and penetrations. For fully adhered, mechanically attached, and ballasted systems, we adjust fastener patterns and plate counts accordingly per FM Global and UL wind uplift classifications.
For steep-slope residential roofing, we quantify asphalt shingles by bundle (with hip and ridge cap separation), synthetic underlayment by square, ice and water shield at eaves and valleys, and all starter strip, drip edge, and venting requirements.
Tapered Insulation & Drainage Design
Proper drainage is critical for roof longevity and warranty compliance. We calculate tapered insulation quantities by panel thickness, slope direction, and cricket location per the roofing design drawings. Our team identifies low-point scuppers, internal drains, and overflow drain locations, ensuring the insulation takeoff matches the positive drainage plan exactly.
The Roofing Precision Advantage:
- Membrane Measurement by Area: Every roof plane measured individually, not averaged, with separate quantities for field, perimeter, and corner zones.
- Insulation Board Optimization: Cover board and polyiso counts calculated to minimize cut waste while maintaining positive drainage slopes.
- Complete Flashing Coverage: All counterflashings, base flashings, copings, gravel stops, and expansion joints quantified by linear foot and material gauge.
Sheet Metal & Flashing Detailing
A roofing estimate is incomplete without thorough sheet metal quantification. We itemize all copings, counterflashings, base flashings, gravel stops, drip edges, gutter liners, downspouts, scupper boxes, and expansion joint covers. Each component is measured by linear foot, material type (galvanized steel, aluminum, copper, stainless), and gauge, with all necessary cleats, sealants, and fasteners included.
Roof Accessories & Penetrations
Every penetration through the roof membrane is a potential leak point. We identify and quantify all rooftop penetrations — HVAC curbs, plumbing stacks, conduits, skylights, smoke hatches, equipment supports, and pipe flashings — including the required curb adapters, flashing boots, counterflashings, and sealant per manufacturer specifications.
The Roofing Precision Protocol
A rigorous, code-compliant approach to roofing quantity surveying — designed to deliver watertight accuracy on every bid.
Roof Plan Audit
Review of all roof plan sheets, details, and specifications to identify membrane type, insulation thickness, and edge metal requirements.
Area Measurement
Digital tracing of every roof plane by slope, including parapet upstand heights and perimeter edge conditions for membrane termination.
Insulation Modeling
Calculation of tapered insulation panel quantities by thickness zone, cricket location, and drainage slope direction.
Flashing Extraction
Quantification of all sheet metal components — copings, counterflashings, gravel stops — by linear foot, material, and gauge.
Professional Roofing Deliverables
Our reports give roofing contractors the forensic detail required for membrane procurement and roof system verification.
Membrane & Insulation Schedules
Excel reports listing membrane square footage by area, insulation board counts by thickness, and cover board quantities by R-value zone.
Sheet Metal Lineal Schedule
Complete flashing, coping, and edge metal quantities by profile, gauge, and material type for accurate shop drawing and procurement.
Color-Coded Roof Plans
Visual PDF overlays distinguishing membrane systems, insulation zones, and penetration locations for field installation crews.
Watertight Bids
Roofing Cost Drivers
Insulation R-Value
Energy code minimum R-values vary by climate zone. A Chicago roof requires 2-3x the insulation thickness of a Miami installation, directly affecting board and fastener counts.
Wind Uplift Rating
FM Class 1-135 roofs require denser fastener patterns and heavier membrane reinforcement than non-rated assemblies, increasing both material and labor costs.
Roof Complexity
Multiple roof levels, parapet conditions, skylights, and equipment curbs increase flashing linear footage and penetration counts per square foot.
Building Height
High-rise roofing requires crane staging, material hoisting, and safety netting that add significant cost beyond the roof system itself.
Roofing Specialties
System-level estimates for every roofing scope.
Low-Slope Membrane
TPO, PVC, EPDM, and modified bitumen roofing with insulation, cover board, and fastener pattern per FM uplift class.
Steep-Slope / Shingle
Asphalt shingles, tile, metal standing seam, and slate with underlayment, ice shield, and venting per manufacturer specs.
Sheet Metal Flashing
Custom copings, counterflashings, gravel stops, expansion joints, gutter, and downspouts by profile and gauge.
Roof Restoration
Coating-based roof restoration systems with surface preparation, primer, and elastomeric topcoat for existing roof renewal.
Roofing Estimating FAQ
What roofing materials do you include in your takeoffs?
Do you calculate tapered insulation for positive drainage?
Can you estimate metal flashing and sheet metal accessories?
How do you handle roof penetrations and curb counts?
What is the turnaround for a commercial roofing estimate?
Do you include ice/water shield and underlayment in residential takeoffs?
Stop Bidding Blind. Protect Your Margins.
Whether it's an RFI catch, a constructability review, or a massive scope gap, our preconstruction team finds the risks before you sign the contract.
NDA Protected & Confidential