How To Replace Box Gutters

How To Replace Box Gutters
  • Author: Amanda Arnold
  • Posted On: March 11, 2022
  • Updated On: August 21, 2023

Because box gutters were once the most common gutter style installed, you can find them on many older or historical properties. A box gutter is distinct from modern gutters in that it does not attach to the fascia or trim as a house addition.

A box gutter is a feature of the home’s structure located at the bottom of the roof section and serves as a runoff channel. It might be difficult to determine which box gutter repair method is best for your home or structure.

We’ll talk about box gutters in this article and why they’re not recommended for residential installs. It’s critical to have a well-functioning box gutter system around your home or business area. It aids in the efficient dispersal of precipitation away from your property and prevents water from entering your roof space or wall cavities.

Why Do You Need To Replace Box Gutters?

The water would not flow as necessary to the downpipe if the box gutters were not provided enough fall during the first installation. As a result, rust will form along the gutter line. Any debris that accumulates in the box gutters will cause moisture to build up against the gutter. As a result, the gutter will rust early.

When water moves from one metal to the next, different metals react. As a result of the chemical reaction, the gutter will rust. Replacement of damaged Box Gutters is critical. We also recommend keeping leaf litter and debris out of gutters, sumps, and downpipes to help them last longer and prevent roof leaks.

If you detect water spots on the corner of your ceiling, water patches on your commercial floor, or any other evidence of water damage on the inside or outside, call for help right once. They will assist you in determining the precise cause of any damage or other issue.

Steps To Replace Box Gutters

If your box gutters are leaking, decaying, or corroding, one option is to replace them with a more modern gutter system.

Remove Shingle’s Surroundings

You must first remove the shingles that surround, connect to, or overhang the current box gutter before you can remove it. Pry up the shingles with a roofer’s shovel by slipping it under the shingle and twisting it slightly.

You may pry up the roofing nails and remove the shingles from the roof by twisting the shovel. Only the shingles that connect to or contact the box gutter must be removed. Pull up any remaining nails from the roof after you’ve removed the shingles.

Remove Old Box Gutter

You can now begin removing the old box gutter after removing the shingles exposed to the box gutter. Depending on how the box gutter was installed, removing it will differ.

Most box gutters must be attached to an exterior area of your roof during installation. Remove any screws or nails that fasten the box gutter to the roofing structure to loosen the attachment.

The gutter will most likely be attached to each rafter tail with a nail or screw. Depending on the gutter installation, you may need to cut the wooden box gutter channel to disconnect it from the roof. You may do this with your jigsaw. Remove the box gutter channel from the roof if no cutting is required.

Check Surrounding Roof For Damages

Following removing the box gutter, inspect the roof and surrounding wood for rot, rotting, or damage. If any of the wood is damaged or rotted, you must repair or replace it before continuing. Trim board parts that need to be replaced can be trimmed.

After removing the rotten portion, measure it and cut a copy from good wood. The new wood piece can then be nailed to repair the rotten region.

Replace Shingles If Needed

You can now finish the roof by replacing the shingles. Begin replacing the shingles on the outside upper corner of the shingle-wearing area. Place the shingle in place after applying asphalt roofing cement to its back.

Lay the shingle on top of the previous shingle, gently overlapping it and covering the previous shingle’s nails. Nail the shingle to the roof from the outside so that the following shingle covers the nails. Using the remaining shingles, repeat the process until the roof is complete.

Install New Box Gutter

Once you have fixed all damaged surroundings and shingles, you are set to install a new box gutter. Instead of installing a new box gutter, you can choose a modern gutter system for better functioning. The choice is yours!


Box gutters are not recommended for residential properties by gutter installation professionals. For starters, the box gutter is made to fit larger homes. A box gutter’s size does not correspond to the size of a residential dwelling. Installing it in small-structured dwellings can jeopardize the integrity of your entire gutter system.

Most commercial structures prefer aluminum box gutters because of their long-term durability. A box gutter can be completely customized to meet the demands of your property. It’s completely seamless, easy to clean, and can hold more water.

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Author: Amanda Arnold

Amanda has been working with ConstructionHow since 2021. Her experience spans over 5 years in the creative niche such as home decor and trends, landscaping, renovations, and custom architectural values. As a home designer expert, she has a keen eye for the latest home improvement trends with accurate facts that readers find impossible to ignore. Being invested in home-building trends is how she has gained her lucrative expertise exploring more to bring a positive ambiance for all homeowners (and even tenants!). Currently, she lives in a beautiful beach home, a source of fascination for her.