How do I know what size gutters my commercial building needs?

The right gutter size for a commercial building depends on roof square footage, roof pitch, downspout placement, and how much rain and snow the roof collects. In New Hampshire, many commercial properties need 6-inch, 7-inch, or 8-inch gutters because standard residential sizes cannot handle heavy rain, snowmelt, or long roof runs.

When should commercial gutters be repaired versus replaced?

Commercial gutters should be repaired when issues are limited to loose hangers, small leaks, or minor separation. Replacement is usually the better option when gutters are undersized, pulling away from the building, rusting, or repeatedly overflowing despite cleaning. If water damage or ice buildup keeps returning, the system is often the problem—not maintenance.

How often do commercial gutters need cleaning and maintenance?

Most commercial buildings in New Hampshire need gutter cleaning at least twice per year, typically in late spring and late fall. Properties surrounded by trees, exposed to pine needles, or affected by snow and ice may require more frequent maintenance to prevent clogs, overflow, and slip hazards

Are commercial gutter systems required to be fully insured?

Commercial gutter work should always be performed by a fully insured contractor. Commercial properties carry higher liability due to building height, access requirements, and public safety concerns. New England Gutter Systems is fully insured and backs its seamless gutter installations with a lifetime labor warranty, which protects property owners long after the work is complete.

What type of gutters work best for commercial buildings in New Hampshire?

The best gutters for commercial buildings in New Hampshire are commercial-grade seamless aluminum gutters or box gutters designed for high water volume and snow load. Properties with flat roofs or metal roofs often perform best with custom box gutters, while large sloped roofs typically need 7” or 8” K-style seamless gutters.

Why do commercial gutter systems fail faster in winter?

Commercial gutter systems fail faster in winter because snow load, ice buildup, and freeze-thaw cycles place extra stress on hangers, seams, and fasteners. When gutters are undersized or improperly supported, melting snow refreezes at exits, causes sagging, and pulls systems away from the building. Proper sizing, tighter hanger spacing, and controlled water exit points reduce winter failure risk.

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How do I know what size gutters my commercial building needs?

When should commercial gutters be repaired versus replaced?

How often do commercial gutters need cleaning and maintenance?

Are commercial gutter systems required to be fully insured?

What type of gutters work best for commercial buildings in New Hampshire?

Why do commercial gutter systems fail faster in winter?

Why Choose New England Gutter Systems for Your Commercial Buildings

Decades of combined commercial gutter experience

Commercial Gutter Issues That Lead to Ice, Water Damage & Liability

Large flat or low-slope roofs

Runoff that overwhelms existing gutters

Icy parking lots and walkways

Sagging gutters and pulled-out hangers

Leaking seams and aging systems

New construction or proactive upgrades

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