5 Things to Ask Your Commercial Roofer in Christchurch Before Signing a Contract
Choosing a commercial roofer can feel overwhelming. The difference between a smooth project and years of leaks often comes down to the questions you ask before you sign. Here are five crucial ones every Christchurch property owner should put on the table.
Confirm certifications and licensed installer status.
Ask about warranties—product and workmanship.
Review health & safety, insurance, and site plans.
Demand transparent, itemised quotes.
Check local Christchurch project experience.
Are you a licensed membrane and butynol installer?
Warranties are only valid when installed by licensed applicators. In Christchurch, this applies to butynol, liquid membranes, and seamless waterproofing systems. Ask for proof of current certifications and training with major suppliers.
What warranties do you provide?
Look for both product warranties (often 15–20 years) and workmanship guarantees (5–10 years). Ensure they are written, transferable, and outline response times for callouts. Without both, your investment could be at risk.
How do you handle health & safety on site?
Confirm your roofer has SSSPs (Site-Specific Safety Plans), public liability insurance, and WorkSafe-compliant procedures. This protects both your property and tenants, while reducing delays and liability exposure.
Can I see an itemised scope of works?
Generic quotes hide costs. Demand a line-by-line breakdown covering prep, membrane thickness, drainage, penetrations, scaffolding, and waste removal. This ensures a fair comparison between contractors.
What local Christchurch projects have you completed?
Local experience matters. Ask for case studies or addresses of completed projects across Canterbury—warehouses, apartment blocks, or commercial offices. It proves reliability under Christchurch’s challenging climate.
FAQ
Why do warranties vary so much?
Because only licensed installers can activate product warranties, and terms differ between suppliers.
Can I negotiate maintenance into the contract?
Yes—annual inspections are often included to keep warranties valid.
What’s the biggest red flag?
A roofer who can’t provide certification documents or itemised quotes