How To Repair Outside Siding? (Explained)

Maintenance is an important aspect of your home’s exterior. If you want to keep its value and protect it from the elements, then you need to keep up with regular repairs and maintenance work.

How To Replace A Section Of Damaged Wood Siding Step by
Repairing siding is an important part of maintaining your home.
Small repairs can be done by homeowners, but extensive damages or age require professional attention.
There are numerous types of siding material, each requiring unique repair methods.
Seemingly minor problems can eventually lead to more significant damages, so it’s essential to address repairs as soon as possible.
Proper maintenance will extend the lifespan of your siding and keep it looking new for years to come.

Choose The Right Weather Conditions To Start

To begin, you’ll need to choose the right weather conditions to start your project. Your exterior siding should be dry and free of debris so that it’s easier to work with. 

It’s also important that you remove any old nails, screws, or fasteners from the surface before beginning repairs this will help prevent them from rusting over time and becoming more difficult to remove later on.

Finally, use a wire brush to remove any dirt or debris from the siding surface before beginning repairs; this will help ensure a smooth finish once your project is complete!

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Clean Up The Outside Surface Well With Soapy Water

The second tip is to clean up the outside surface well with soapy water. You can use a pressure washer or garden hose for this. 

If you want your siding repaired properly, make sure that you have a clean surface before beginning repairs.

Otherwise it may cause problems when trying to cover up a weak spot in the siding with new material and could end up costing more money than necessary in the long run after having to fix several other things due to improper installation of new materials (such as paint).

Tips for Cleaning Siding

1.Remove any furniture or decor near the siding to protect them from water and soap spray.
2.Mix soapy water by combining water and mild dish soap in a bucket.
3.Begin cleaning the siding by scrubbing from the bottom up or top down with a long-handled brush, sponge or cloth.
4.Rinse the siding thoroughly, working from the top down or bottom up to prevent streaking.
5.Using a pressure washer or garden hose with a spray nozzle, rinse any remaining soap suds until the water runs clear.
6.Allow the siding to dry completely before attempting any repairs.

This table outlines the steps for cleaning the outside surface of the siding with soapy water. Following these tips will help to effectively clean the siding and prepare it for any necessary repairs.

Check If You Need A New Corner Piece

Once you have the correct tools and materials, you can begin to repair your siding. First, inspect the damaged area to determine if it will need to be removed or if it can be repaired.

If the corner piece is damaged but still able to hold its shape and keep water out of your home, then it should not be replaced. 

If there are cracks in the corner piece that extend past any other part of the siding (the top or bottom), then it needs to be removed before repairing.

For most homes with vinyl siding, this method works well as long as there are no other areas where water may leak into your house and cause damage over time.

Just like siding repairs, problems with your roof can lead to more significant issues down the line. That’s why it’s crucial to get on top of them right away. If you’re looking to learn how to repair a roof, our guide on roofing and siding repair has you covered.

Check To See If The Existing Corner Needs To Be Cut Or Notched

Check to see if the existing corner needs to be cut or notched. If the corner is damaged, you will need to cut it. If it isn’t damaged, no cutting is required.

Cut away any siding that overlaps onto windows and doors as well as any extra siding material at door jambs, window frames and corners where two pieces of siding meet each other at a wall intersection.

Using a circular saw with an abrasive blade on it (a 7-1/4-inch blade), cut along the bottom edge of your new piece of siding going into the existing space between your home’s siding and windows/doors until you reach either side of where this piece will be attached (this is called “notch cutting”).

Checking Corners for Repair

1.Inspect the corner you’re working on to determine the extent of the damage.
2.Look for signs of peeling, warping, or buckling.
3.Determine whether the existing corner needs to be cut or notched based on its condition.
4.If the corner is damaged, use a utility knife to carefully cut the corner so that it aligns with the nearest undamaged panels.
5.If the corner is not damaged, proceed to the next step without any cutting.
6.Secure the cut area using metal z-flashing by tucking it under the siding on one side and over the top of the cut edge.
7.Finish off standard corner technique with outside and inside corner posts.
8.Caulk the newly repaired corner to seal any gaps.

This table outlines the steps for checking and repairing corners. Checking to see if the corner needs to be cut or notched is an essential step in corner repair and will help ensure the repair is done correctly and effectively.

Cut And Install The Corner Piece

Now it’s time to cut and install the corner piece. Using a utility knife, cut along the line that you drew in Step 1 until you reach the end of your siding board. 

Then, remove the excess siding from around this area so that it is flush with the rest of your house’s outside siding.

Now, use wood screws or nails to secure this piece into place and make sure that it is exactly flush with your house’s outside siding (you can use a small hammer for this). Finally, use a nail gun for maximum strength and security.

Whether you’re repairing your siding or fixing a hole in your drywall, it’s essential to achieve a seamless repair. Check out our guide on matching texture on wall repair to learn how to blend repairs seamlessly.

Locate The Damaged Board

To locate the damaged board, check the entire length of the siding. If you’re lucky and your siding is still in good condition, you may be able to spot the problem right away.

Check around your house for any evidence of cracks or holes that may need repairing as well. Pay attention to areas where water collects (like window wells) and where there’s been previous damage (such as when someone hit a tree branch with their car).

Also take note of any moldy smells—this can indicate water damage from inside your home leaking through cracks in your outside walls or roof.

Remove Fasteners From The Damaged Board

To remove the damaged board, use a screwdriver to loosen and remove the fasteners holding it in place. 

If you are unsure of what type of fasteners your siding has or have trouble removing them, use a drill to remove them instead. If you find that your fasteners are rusted or corroded, use a chisel to drill through and then pull out.

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Measure And Cut A Replacement Board

Now it’s time to cut the replacement board. You’ll need to measure and cut a replacement board if you have a damaged board, or if you want to add more siding.

Measure the length and width of the damaged board, then subtract 1-2 inches off each measurement to account for the thickness of additional siding material.

Cut your new piece with a handsaw (or miter saw). Make sure that all four sides of your new piece are straight and even, and don’t worry about making tiny adjustments on your existing wall it will be covered by nailing flanges!

If necessary, use a hammer and nails to secure your new piece into place. If you’re only replacing one part of an entire row of siding boards that run vertically along an outer wall (as opposed to an entire section), there will be two nails needed per end: one at each end point where two pieces meet one on top/bottom side together before driving second nail through both layers together at opposite end point location.”

Install The New Replacement Board

  • Install the new replacement board with the same fasteners and screws.
  • Make sure that the new replacement board is cut to the same size as the damaged boards, and that it’s aligned with them.
  • Check that you’ve installed your new siding at the same level or slightly above than existing siding.

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Follow-Up On Size For The Replacement Board

  • Measure the width and length of the damaged board.
  • Measure the width of your replacement board.
  • Measure the length of your replacement board.

Now that you know all four measurements, you can start cutting your new piece to fit your siding project.

Use Clapboards For Repair Work On Surfaces That Produce More Noise Due To Vibrations

If you are unable to remove the damaged siding, and you need to replace it with new siding, you can use clapboards for repair work.

They’re often used when the original siding is no longer available or if it’s not possible to remove it.

Making Repairs For Decorative Boards Is More Challenging Than Other Types Of Boards

If you are replacing decorative boards, you will have to cut them down to size as well. If you have a large area of missing wood, it may be best to replace the entire section with smaller boards that match the pattern of the original material. 

In some cases, if there is a large gap between two sections of siding and no other way to fill it in, it may be more practical to replace more than one board at once.

Decorative boards tend to be more expensive than plain boards because they require additional work during installation and painting but also because they’re often custom-made for specific homes or rooms (e.g., for an exterior door).

Use Hardie Siding As An Alternative To Avoid Future Maintenance Issues

If you are worried about the maintenance involved in your siding, Hardie siding is a great option. This product comes with a lifetime warranty and it lasts for up to 50 years without any major repairs.

Hardie siding is also ideal for areas with high wind or humidity levels because of its sturdy construction and weather-resistant material. It won’t crack or peel when installed properly so you don’t have to worry about how much water damage your home might experience down the road.

Ensure Proper Ventilation And Insulation For A Longer Life Of Your Siding Boards

Insulation is important to prevent heat loss in winter and heat gain in summer. Insulation also prevents noise from outside the home, which makes for a quieter living environment.

If you have siding that was installed more than 10 years ago, it may be time to replace your insulation boards. If you have any questions about your siding, contact a licensed contractor like K & M Builders today!


If you’re looking for a way to repair your outside siding, then these tips should be able to help you out. But before you get started with this project, make sure that you have all the necessary tools and materials so it doesn’t turn into an even bigger problem than originally anticipated.

Further Reading

Here are some additional articles you may find helpful:

How to Repair Vinyl Siding: This comprehensive guide from Forbes explains how to repair vinyl siding, step-by-step. It covers everything from identifying the problem to fixing the issue and ensuring the repair blends in.

Siding Replacement vs. Repair: What’s the Best Choice for Your Home?: If you’re facing significant siding issues, you may be wondering whether it’s worth repairing or replacing it. This guide from Advantage Construction discusses the pros and cons of each option and will help you make the best decision for your home.

How to Repair Vinyl Siding: Today’s Homeowner provides an in-depth guide to fixing vinyl siding. It includes tips on how to remove, replace, and repair damaged sections of vinyl siding.


What tools do I need for repairing siding?

The required tools for repairing siding depend on the nature of the repair. However, some of the essential tools you’ll need include a utility knife, a pry bar or claw hammer, a drill with a screwdriver bit, siding nails and a hammer, and caulk.

Can I repair vinyl siding myself?

Yes, repairing vinyl siding is a task that can be done by homeowners. It does not require any technical experience or special tools. However, you should only take on repairs that are within your capabilities.

How do I repair small holes in siding?

To repair small holes in siding, you’ll need to first clean the area around the hole. Next, you’ll need to fill the hole with caulk and then use a putty knife to smooth it over. If you’re dealing with a large hole, you may need to replace that section of siding entirely.

When should I replace my siding instead of repairing it?

If the damages are widespread and beyond repair, it’s best to consider replacing the siding. Another critical factor to keep in mind is the age of the siding. If your siding is more than 20 years old, it is likely deteriorated and not worth repairing.

How much does it cost to repair siding?

The cost of repairing siding varies depending on the severity of the damage, the type of siding, the amount of labor involved, and the location of the damage. Small repairs can cost as little as $100, while more significant repairs can cost up to $5,000 or more. It’s best to get a quote from a contractor to determine the cost of the repair.