How to Repair Rotted Wood

As a DIYer, there are a number of ways that you can go about repairing rotted wood. Whether you discovered the wood rot inside the out or on the exterior, it is likely that the same thing caused the rot in the first place. Since wood rot is actually a fungus that attacks and damages the fibers of wood due to exposure to excessive moisture, it could as easily happen inside your interior walls as it could be found around the line.

No matter where you find the rot, it is imperative that you take of it as soon as possible. This is because since it is a fungus it will continue to destroy the wood of your home, outbuildings and even your wooden deck. The deeper the damage goes into the wood, the weaker the overall structural integrity of any structure made from wood. 

If you discover that you do have evidence of rotted wood then you want to be sure that you have a game plan in place to get it taken care of as quickly as possible. This article was designed to introduce a very popular method for repairing rotted wood for DIYers.

How to repair rotted wood with a polyester filler material
Preparation

It is always best to be prepared for the job and that includes gathering up all of the things you will need to have on hand in order to get started. The tools that you will need are pretty simple; wood chisel, rasp, paintbrush, putty knife and a sanding block. You will want to have a quality brand 2-part polyester wood filler, wood restorer, and sandpaper. Since you will be working with strong chemicals and kicking up a lot of dust you want to be sure that you are wearing the proper personal protection.

Remove All Signs of Damaged Fiber

Since wood rot is an actual fungus you want to be sure that you remove all signs of wood rot in order to be sure that it will spread to any unaffected wood. Use a wood chisel to get at deeper and larger areas of rot. You can use a coarse sandpaper to help remove any surface rot. Once you removed all of the rotted sections of the wood, you need to be sure that none of the holes that were left behind after removing. 

Applying Rotted Wood Restorer

Once you have removed all of the rotted wood fibers and you are left with several holes of varying depths and sizes. You want to be sure that you completely cover the areas including surrounding where the rotting wood used to be with a good quality wood restore. This will help prevent the fungus from spreading into the good parts of the wood.

Using a Polyester Wood Filler

The use of a 2-part polyester wood filler is a very popular choice these days. It is generally very easy to use and you can get the job done quickly. Depending on the application it is recommended that you use a form that goes over the top of the area (especially on vertical surfaces to prevent sagging) to hold it in place.

Sand flat

Once the filler has fully cured and is completely dry you want to be sure that you sand it down flat. Using the sanding block and sandpaper to eliminate any high spots and swirl marks that will show through the paint. You can knock down any ridges using a rasp and then go back over everything with a sanding block to flatten everything out.

Applying a fresh coat of paint

The final step is to apply a primer coat of paint over the repaired area of wood to seal everything up and then go back over everything once the primer is dried. The final coat of paint will be the one that matches the rest of area that was not repaired. You should not be able to tell where you did the repairs from a distance.

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