How to finance a new roof in Canada: contractor plans, HELOCs and loans compared

The cheapest way to pay for a roof is usually cash you already have; after that, a secured home equity line of credit (HELOC) or adding the cost to a mortgage at renewal is usually the lowest-rate borrowing, and contractor financing plans, personal loans and unsecured lines of credit cost more, sometimes much more. Promotional "no interest" offers can be good value if the balance is fully repaid on time, but some charge deferred interest or high rates after the promotion ends. Always compare the total cost of each option, not the monthly payment, and be careful about any financing that registers a security interest against your home.

This guide is part of how to compare roofing quotes. Rates in the examples are illustrative, not current offers.

Options compared

Option	Typical structure	Pros	Watch for
Savings	Pay from cash	No interest	Keep an emergency buffer
HELOC	Revolving credit secured on the home, variable rate	Usually lowest borrowing rate; flexible	Interest-only minimums; variable rates; uses home equity
Mortgage refinance or renewal top-up	Add to mortgage balance	Low rate, long amortization	Prepayment penalties if mid-term; long amortization raises total interest
Unsecured line of credit	Revolving, variable rate	Flexible	Higher rate than HELOC
Personal instalment loan	Fixed term and payment	Predictable	Rate depends on credit; fees
Contractor or third-party financing plan	Arranged by the contractor through a lender	Convenient, promotions	Rate after promotion; deferred interest; security registered on title
Credit card	Revolving	Possible chargeback protection	Very high rates if not repaid quickly

Worked example: $15,000 three ways

Using the roof financing calculator with illustrative rates:

Option	Rate	Term	Monthly payment	Total interest
HELOC, repaid on a fixed schedule	7.0%	5 years	about $297	about $2,821
Personal loan	9.99%	5 years	about $319	about $4,118
Contractor plan after promotion	19.99%	5 years	about $397	about $8,840

The difference between the first and last option is about $6,000 of interest on the same roof. Monthly payment formula: payment = P × r ÷ (1 − (1 + r)^−n), where P is the amount, r the monthly rate and n the number of months. For the personal loan: r = 0.0999 ÷ 12 = 0.008325, n = 60, payment ≈ $318.62.

A HELOC only costs that little if you actually repay it on a schedule; paying only the interest leaves the $15,000 owing indefinitely.

Promotional financing: read the terms

"No payments for 12 months" or "0% for 18 months" offers vary:

True 0%: no interest during the promotion; regular rate only on the balance left afterwards.
Deferred interest: interest accrues from day one at a high rate and is charged in full if the balance is not paid off by the deadline.
Fees: setup or administration fees can be added to the balance.

Ask for the annual percentage rate and the total cost of borrowing in writing. Federally regulated lenders must disclose the cost of borrowing, and provinces have their own cost-of-credit disclosure rules for other lenders. Since 1 January 2025, the Criminal Code's criminal interest rate is an annual percentage rate above 35%, but legal rates up to that level can still be very expensive.

Security on title: be careful

Some home improvement financing, particularly for equipment such as furnaces and water heaters, has involved registering a security interest or notice against the home. That can make selling or refinancing harder until it is discharged. Roofing financed by a lender may also be secured. Before signing, ask:

Will anything be registered against my property or in the personal property registry?
What does it cost to pay off early?
Who is the lender, and how do I contact them directly?

If you are unsure, have a lawyer, or a notary in Quebec, review the documents.

Mortgage renewal timing

If your mortgage renews soon, adding the roof cost at renewal can avoid prepayment penalties and secure a lower rate. Over a long amortization, though, the total interest on $15,000 can exceed that of a five-year loan, so consider keeping the payment higher or making prepayments.

Illustrative comparison: $15,000 added to a mortgage at 4.5% over 25 years costs about $83 a month and about $9,900 of total interest over the full term if it is never prepaid, compared with about $2,800 on the 7% HELOC repaid over five years. The low rate does not mean low total cost.

Insurance money and financing

If part of the roof is covered by an insurance claim, the insurer may pay in stages (for example the actual cash value first and the rest after completion). You may need short-term financing to bridge the gap. See home insurance roof claims.

Paying the contractor when you finance

Financing does not change the lien act rules. If a lender pays the contractor directly, make sure the holdback is still respected and that the lender does not release money before work is done. See holdbacks under provincial lien acts and keep payments in step with the asphalt re-roof example.

FAQ

Is contractor financing a bad idea?

Not always. A true 0% promotion repaid on time can be the cheapest option. The risk is in high post-promotion rates, deferred interest and security registrations.

Who regulates lenders?

The Financial Consumer Agency of Canada oversees federally regulated financial institutions such as banks. Provincial consumer protection offices regulate many other lenders and credit agreements.

Can I deduct roof financing interest?

For your own home, generally not. For a rental property, interest on money borrowed for the property may be deductible; ask an accountant.

Sources

Financial Consumer Agency of Canada — loans, lines of credit and HELOCs
Justice Laws Website — Criminal Code, section 347
Consumer Protection Ontario — credit agreement disclosure in Ontario
Office de la protection du consommateur — credit contracts in Quebec