What warranty should I expect from a deck builder in NB?

Most reputable deck builders in New Brunswick offer 1-2 years on workmanship and pass through manufacturer warranties on materials, but warranty terms vary significantly between contractors — always get warranty details in writing before signing.

Typical Workmanship Warranties

Professional deck builders in NB commonly provide 1-2 years warranty on their installation work, covering issues like loose fasteners, improper joist spacing, railing problems, or structural defects caused by poor workmanship. Some premium contractors offer up to 5 years on structural components like framing and footings. This workmanship warranty should cover the cost of fixing installation errors, including materials and labor to correct the problem.

However, workmanship warranties typically exclude damage from normal wear, weather exposure, lack of maintenance, or homeowner modifications. They also don't cover natural wood movement, minor checking/cracking in pressure-treated lumber, or fading of stain finishes — these are considered normal in New Brunswick's harsh freeze-thaw climate.

Material Warranties (Passed Through)

Your deck builder should pass through manufacturer warranties on all materials. Pressure-treated lumber typically comes with 15-25 year warranties against rot and insect damage when properly maintained. Composite decking offers the strongest warranties — Trex provides 25-50 years on structural integrity and 10-25 years on stain/fade resistance, while TimberTech and Fiberon offer similar coverage. Cedar usually has no manufacturer warranty since it's a natural product, though some suppliers offer limited coverage.

For fasteners and hardware, stainless steel screws and galvanized connectors should have 15-25 year corrosion warranties. Quality railing systems often include 10-20 year warranties on both materials and finish.

What Should Be Covered

A comprehensive deck warranty should cover structural failures, premature material deterioration beyond normal wear, improper drainage causing water damage, and railing systems not meeting building code requirements. The warranty should specify response times for repairs — typically 30 days during building season (May-October) and "reasonable time after spring thaw" for winter issues.

Red Flags to Avoid

Be wary of contractors offering no warranty, verbal-only warranties, or warranties shorter than one year on workmanship. Extremely long workmanship warranties (5+ years) from small contractors can be meaningless if the company goes out of business. Always verify the contractor carries proper liability insurance and WorkSafeNB coverage, as these protect you if warranty work causes additional damage.

Getting It in Writing

Ensure warranty terms are clearly spelled out in your contract, including what's covered, duration, who pays for materials during warranty repairs, and response time commitments. Ask for copies of manufacturer warranty cards and registration information. For composite or PVC decking, some manufacturers require professional installation for full warranty coverage — verify your contractor meets these requirements.

Maintenance Requirements

Most warranties require proper maintenance to remain valid. For wood decks in New Brunswick, this typically means annual cleaning and staining every 2-3 years. Composite decks need periodic cleaning but no staining. Document your maintenance with photos and receipts — warranty claims may be denied without proof of proper care.

Need help finding a deck builder who stands behind their work? New Brunswick Decks can match you with contractors who offer solid warranties and have proven track records in our Maritime climate.