COMMERCIAL ROOFING COST GUIDE

Commercial Roofing
Cost Guide

Understand what drives commercial roofing costs in Metro Vancouver and the Fraser Valley, from system selection (SBS, EPDM, TPO, PVC) to tear-off requirements and rooftop mechanical detailing.

COST GUIDE

How Much Does Commercial Roofing Cost?

Commercial roofing is priced based on total roof area (measured in roofing squares of 100 sq. ft.), roofing assembly specifications, existing condition, and rooftop detailing complexity. Projects typically fall into these main budgeting categories:

Simpler Commercial Projects

(Low-Slope / Good Access / Approved Go-Over System)

$3,500 – $7,500

Approved overlay over sound assembly with minimal penetrations

More Involved Commercial Projects

(Complete Tear-Off / Insulation / Multiple Drains)

$7,500 – $15,000

Full tear-off to deck, new insulation, base sheet & cap sheet

Complex or Full Assembly Replacements

(Extensive HVAC / Tapered Insulation / High Parapets)

$15,000 – $30,000+

Multi-layer tear-off, custom crickets, curbs & commercial detailing

These are estimated price ranges for planning purposes only. The final cost can only be determined after a professional inspection of your property.

KEY FACTORS

What Affects the Cost?

Roofing Membrane System Selection

System choices include 2-ply SBS torch-on, single-ply EPDM, heat-welded TPO or PVC, and standing seam commercial metal. Each system features distinct material costs, lifespans, and installation methods.

Complete Tear-Off vs. Approved Go-Over

A go-over reduces demolition and disposal costs when the existing roof is dry and code-compliant. However, wet insulation, decayed decking, or multiple existing layers demand a full tear-off.

Insulation & Tapered Drainage Systems

Flat roofs require positive drainage. Installing rigid insulation, tapered cricket systems, and sumps around internal drains or scuppers eliminates ponding water and meets energy codes.

Rooftop Equipment, Curbs & Penetrations

Commercial roofs carry HVAC units, exhaust fans, conduits, gas lines, roof hatches, and commercial skylights. Every curb and penetration requires intricate waterproofing detailing.

Parapets, Wall Flashings & Safety Access

High parapet walls require base flashing, counter flashing, and metal cap flashing. Multi-storey building heights and safety access requirements directly impact staging and labour.

What's Included in a Professional Commercial Roofing Project?

A professional commercial roof installation delivers an engineered weatherproofing assembly designed to protect your building, operations, and tenants.
OUR EXPERIENCE

Why Choose In Awe Roofing?

We’re committed to quality, safety and long-lasting results.

Experienced & Certified Team

Experienced professionals focused on quality roofing workmanship.

Premium Materials

Quality roofing materials selected for reliable performance.

Manufacturer Qualifications

Qualified to work with leading roofing manufacturers and systems.

Fully Insured & Bonded

Professional roofing services backed by appropriate insurance and protection.

Local & Trusted in the Community

Reliable roofing solutions from an experienced local roofing team.

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