Gutter Replacement

Repair or replace?

Five signs a gutter is done

Most gutters can be repaired a few times. These signs usually mean the money is better spent on a new run:

• Leaks at many seams, not one or two, especially on older sectional gutters
• Sagging that returns after hangers have been reset, because the fascia behind them is soft
• Rust or holes through the bottom of steel gutters
• Water spilling over the front in ordinary rain, because the gutter is too small for the roof
• A mix of patched sections with different profiles and colors from years of piecemeal repair

If only one or two of these apply, the gutter repair page walks through fixes by symptom. Rowhouses with gutters built into the cornice are a separate case, covered on the box gutter page.

Sizing

5-inch or 6-inch on a city roof

Most houses use 5-inch K-style gutters. Larger roofs, steep pitches and places with heavy rain may need 6-inch gutters, which add about $1 to $2 per linear foot (HomeGuide, Oct 2025). Northern New Jersey qualifies for that last part: Newark averages about 46.6 inches of rain a year, summing the NWS 1991–2020 monthly normals, with July the wettest month (NWS New York).

On a narrow two- or three-family, the gutter runs are short but the roof can be steep and the leaders long. Sizing also means counting leaders: an extra leader on a long run often does more than a bigger gutter.

After the leader

Where the water goes in Jersey City

Jersey City's sewers are combined: the Jersey City Municipal Utilities Authority's sewer rules describe mains that carry "both sanitary and storm flow" together. Roof water that drains into that system competes with everything else during a storm. A replacement is a good moment to look at where each leader ends: tied into a drain, onto a splash block, or across a sidewalk a few feet from the front door.

Materials

What the new gutter is made of

On most frame two- and three-families in Jersey City, the replacement is seamless aluminum. Copper and half-round come up on historic fronts and are covered on the copper and half-round page.

The job itself

What happens on replacement day

1. The old gutters and leaders come down, and the hangers and spikes are pulled.
2. The fascia gets a close look. Years of overflow often leave soft or rotted boards behind the old gutter. Those need replacing before anything new is hung, and the estimate should say how that is priced if it turns up.
3. New runs go up, pitched to the outlets, on hidden hangers.
4. Leaders are attached and run to their outlets, drains or splash blocks.
5. The site is cleaned up and the old material hauled away.

On attached and semi-attached houses, the gutter often ends at a shared wall with the neighbor's roof. How the new run ends, and where its leader comes down, should not send water onto the house next door. On two- and three-family buildings, tenants usually need notice before ladders go up at their windows.

New Jersey rules

What the paperwork should look like

New Jersey sets a few rules for home improvement work that apply to gutter replacement:

• Home improvement contractors must be registered with the state's Division of Consumer Affairs.
• Jobs of $500 or more need a written contract that includes the contractor's registration number, the work, start and finish dates and the total price.
• The homeowner has three business days to cancel after signing.
• New gutters count as a capital improvement, so they are exempt from sales tax when the homeowner gives the contractor Form ST-8 (NJ Division of Taxation, Bulletin S&U-2).

Comparing quotes

Making two estimates comparable

Replacement quotes can differ by a wide margin for what sounds like the same job. Lining them up on these points makes the comparison fair:

• Gutter size (5-inch or 6-inch) and profile
• Metal and thickness
• Hanger type and spacing
• Number and size of leaders, and where each one ends
• Fascia repair: included, priced per board, or excluded
• Removal and disposal of the old gutters
• Any workmanship or material warranty, stated in writing with its terms
• Start and finish dates and the total price, as New Jersey requires for jobs of $500 or more

A quote that leaves several of these out isn't necessarily cheaper. It may just be describing less work.

Cost

Replacement prices

Every line, including guards and box-gutter work, is in the Jersey City gutter cost guide.