How long does a flat roof replacement take?

For a typical 10,000–30,000 sq ft commercial roof, expect 2–4 weeks of on-site work once mobilized, weather permitting. Larger or more complex roofs can take longer.

Should I get a roof condition report first?

If you're unsure whether you need replacement or just repair, a paid roof condition report from an independent consultant (not a bidder) is usually $1,500–$4,000 well-spent.

Is this template legally binding?

No. This is a scoping template to help you get apples-to-apples bids. Your final contract should be reviewed by your lawyer and ideally use a standard CCDC short-form for clarity.

Roofing · RFP template

Flat Roof Replacement RFP Template

Tear-off + new single-ply membrane on a commercial or multi-unit building.

Use this template Download PDF Don’t have an account? Sign up free →

Pre-filled scope + requirements

Tagged to /trades/roofing

5-phase timeline

When to use this template

Your existing flat roof is past 75% of its expected life, you've had repeat leaks, or your reserve study has flagged replacement in the next 12–24 months. Works for commercial buildings, mid-rise residential, and multi-unit properties with low-slope membrane roofs (TPO, EPDM, modified bitumen, BUR).

Sample RFP title & summary

What auto-fills when you click “Use this template” — you can edit anything.

Title

Flat Roof Replacement — [Property Name / Address]

Summary

Tear-off and replacement of the existing low-slope membrane roof on our [size] sq ft commercial property. Looking for a 20+ year warranty and a certified installer.

Scope of work

Scope of work:
- Tear-off and disposal of existing roof system down to deck (estimated [X] sq ft).
- Inspect and report on deck condition; quote allowance for deck repair as separate line item.
- Install new tapered insulation to current code R-value and positive drainage.
- Install new single-ply membrane system (vendor to specify: TPO, EPDM, or modified bitumen) with manufacturer-certified installation.
- All flashings, edge metal, drains, and penetrations included.
- Daily site cleanup; final disposal manifest provided.
- Final manufacturer inspection and issuance of NDL warranty.

Out of scope unless quoted as add-alternates:
- Structural deck replacement beyond [X]% of total area.
- Roof access modifications (ladders, hatches).
- HVAC unit reset / re-curbing.

Standard requirements

- $5M general liability insurance with PMRFP / building owner named as additional insured (certificate required before mobilization).
- WSIB clearance certificate in good standing.
- Manufacturer-certified installer for the membrane system being bid.
- Three references for similar projects (size + membrane type) completed in the last 24 months.
- Roofer must hold a current certification with the membrane manufacturer being bid.
- Project manager assigned to the job with site contact info.

Suggested timeline

1
RFP open
21 days for trades to express interest and submit pricing.
2
Shortlist + site walk-throughs
Top 3 invited to walk the roof and finalize quote.
3
Award + contract
Decision within 1 week of site walks; standard CCDC short-form contract.
4
Mobilization
Within 4 weeks of award (weather permitting).
5
Project completion
Typically 2–4 weeks once started, depending on roof size and weather.

Site access & logistics

Roof access via interior stairwell + roof hatch. Crane staging area available in north parking lot (limited, must coordinate). Work hours 7am–6pm weekdays; weekend work requires advance approval.

Questions every bidder should answer

Ask all bidders the same questions so you get apples-to-apples responses.

Which membrane system are you proposing and why (vs. alternatives)?
What manufacturer NDL warranty length and coverage do you offer?
How will you protect the building interior from leaks during tear-off?
What's your protocol if you discover wet insulation or rotted deck mid-job?
Per-square-foot rate for additional deck repair (T&M allowance)?
What's the projected timeline from mobilization to final inspection?

Evaluation criteria

How you’ll weigh bids when you receive them.

1.Total cost (including disclosed add-alternates).
2.Membrane and warranty quality.
3.References — comparable size + scope completed in last 24 months.
4.Project timeline and ability to meet our desired completion window.
5.Quality of submission and clarity of scope.

Pair with the cost guide

How much does commercial roof replacement cost in Canada

Read what a typical roofing job runs in Canada before you post — so you know the budget range to expect.

See the cost guide

Trades who match this work

Once you post, these are the kind of vendors who’ll see your RFP and express interest.

Browse Roofing companies Full directory

Common questions

PMRFP is a vendor discovery and RFP visibility platform. We do not guarantee project availability, bid success, contract awards, property manager response, or revenue. Members are responsible for their own due diligence, qualifications, insurance, licensing, pricing, and agreements.