What warranty should I expect from a spray foam insulation contractor in New Brunswick? | Insulation IQ?

Warranty terms for spray foam insulation in New Brunswick vary more than most homeowners expect, and understanding what is and isn't covered before you sign a contract can save you significant frustration later. A well-structured spray foam warranty typically covers two separate things: the material itself and the workmanship — and these are often provided by two different parties.

Material warranties come from the foam manufacturer, not the installer. Major brands such as Icynene, Lapolla (now part of Carlisle), BASF Enertite, and Demilec typically offer lifetime material warranties on their closed-cell and open-cell products, provided the foam is installed by a certified applicator according to the manufacturer's technical data sheet. These warranties cover defects in the foam itself — crumbling, shrinkage beyond specified tolerances, or loss of R-value — but they do not cover installation errors, substrate issues, or water intrusion from sources outside the foam assembly. To access a manufacturer warranty, your installer must be part of that manufacturer's certified network, so always confirm which brand they use and ask to see their applicator certification before work begins.

Workmanship warranties come from the contractor and are where you'll see the widest variation in New Brunswick. A reputable installer will offer at minimum a two-year workmanship warranty, with better operators offering five years. This covers installation defects such as adhesion failure (foam peeling off the substrate), off-ratio application that results in abnormal off-gassing or soft spots, missed areas, or inadequate thickness relative to what was quoted. Get the warranty terms in writing in the contract — not just verbally — and confirm that the coverage specifies what remediation the contractor will provide (re-spray, material credit, or labour-only repair).

There are several important exclusions you will see in virtually every spray foam warranty in the industry. Substrate movement is the most common. If your foundation wall cracks and the foam cracks with it, that is not a warrantable defect in the foam or the installation. Similarly, if roof sheathing deflects seasonally and separates from the foam at edges, that is attributed to structural movement rather than foam failure. In New Brunswick, frost heave and foundation settlement are genuine concerns — particularly in the Saint John River Valley where seasonal ground movement can be pronounced — so this exclusion is worth understanding clearly.

Moisture intrusion from external sources is universally excluded. If a basement leaks due to failed waterproofing, weeping tile, or a window well that floods, the resulting moisture damage to spray foam (particularly open-cell foam) is the homeowner's responsibility, not the installer's. This is why it's critical to address any active water intrusion before spray foam is applied, and why reputable installers in NB will document the condition of the space prior to spraying.

For projects that involve NB Power rebates or the Canada Greener Homes Grant, keep in mind that warranties may interact with rebate conditions. The Greener Homes programme requires a post-retrofit EnerGuide assessment, and if that assessment reveals substandard installation, you may need remediation before the final grant is released. Some contractors include the EnerGuide assessment coordination in their scope — confirm this upfront.

The overall installed cost for a spray foam project in New Brunswick — say, $5,000–$12,000 for a typical residential basement and rim joist application — makes warranty quality a meaningful financial consideration. A contractor offering a one-year workmanship warranty at $800 less than a competitor offering five years may not be the better value proposition. Ask each contractor to walk you through their defect-reporting process: how do you contact them, what is their response time commitment, and do they carry errors and omissions insurance in addition to general liability? E&O coverage is relatively rare among smaller insulation contractors but provides an important backstop if workmanship defects are disputed.

Finally, keep a copy of your contract, the product technical data sheets, and any photos taken during installation in a safe place. Warranty claims are much easier to support when you can document what was installed and to what thickness.

New Brunswick Insulation and the New Brunswick Construction Network can connect you with insulation contractors who are transparent about their warranty terms and certified with reputable manufacturers.

---

Looking for experienced contractors? The New Brunswick Construction Network connects homeowners with qualified professionals:

• moose luxury painting
• Thirty Four Renovations
• Brunswick insulation & roofing
• Arctic Fox Construction Inc.
• 3Tone Construction Ltd