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Repairing Window Rot Caused by Condensation

Repairing rot is not a quick and easy process. However, it can still be done if you have the right tools and observe the correct procedure. Of course, if you think this task is beyond your abilities, hand it over to a professional. Also, the paint on old wooden windows typically contain lead. So to avoid compromising your health and safety, it’s best to call an expert.

In this article, trusted window company Renewal by Andersen® of Memphis shares some tips on how you can repair rotten wood on your old window.

Scrape and Fill With Epoxy

You can scrape out the rotten wood by using a chisel. Then, with a 1/4-inch bit fitted onto a drill, create a series of holes throughout the affected area. Make sure the holes are one inch apart and angled slightly downward. Check if the wood is damp and ensure it’s completely dry before filling the holes with epoxy.

You’ll have to fill the holes repeatedly until the wood is saturated and the holes can no longer be filled any further. Allow one week for the epoxy to cure. Then, put epoxy wood filler into the holes. Make sure the holes are full before covering the rest of the rotten wood with epoxy.

Get a New Window

For windows with rotted sills or trim, experts usually recommend replacing them instead. The windows offered by Renewal by Andersen of Memphis have frames and sashes made of Fibrex®, which is a composite material that uses real wood fiber. These windows are tested and proven to perform better and last longer, and they offer superior energy efficiency resulting in energy savings. You really get value for your money with these windows. And on top of that, you are guaranteed to receive an exceptional window replacement service.

Other Tips to Keep in Mind

Don’t forget to wear chemical-resistant gloves when working with epoxy. And when possible, time your repairs during a two-week period with dry weather forecast. The epoxy will need time to cure. And if you’re repainting your window too, you need to allot enough time for the paint to dry.

With several years of experience, Renewal by Andersen of Memphis delivers excellent results. Our team ensures that all house window replacement projects we work on meets the satisfaction of our customers. Call us at (901) 779-1178 or fill out our contact form to request a free quote.


"Absolutely wonderful experience working with renewal. They kept my wife and I up to date all throughout the process from the initial sales pitch to installation. They were courteous and professional throughout. The installation of 8 windows was completed in one day and the product is fantastic. Immediate difference felt inside the home and its much quieter now too. My wife and I are thrilled at our purchase. The windows are a bit pricey but worth every single penny. Wonderful product from a wonderful company. Will definitely be using them in the future to install the rest of the windows in our home."

Joseph Sipes
Jul 16, 2022

"When I say, superior service I mean just that!! From start to finish I was pleased!! Step 1, Scheduled appointment at the Home show… easy. Step 2, phone call to confirm appointment the next week….easy. Step 3, in home consultation with Keith Billingsley…..Amazing!!!! Step 4, call and cancel all other Window companies and let them know you have chosen the Best company, Anderson Windows!!! My Windows took a couple of months to come which was not a problem. Oooohhh but when installing day came ( a week early) I was lost for words. The installation team was A1 with professionalism and cleanliness!! They didn’t leave a scrap of trash on my property. It was cleaned up both days. I had Ed Tutton and crew. I had a million questions and they answered every one of them and made me feel so assured with the process. A couple of my Windows had wood rotted. They took care of it and fixed it better than when the house was built!!! Two of my Windows came in broken, it was addressed and shown to us and reorder in the same day!! They will be installed later. The Windows are so beautiful I stood in my master bedroom Windows for almost 3 hours just looking out. I hate Window grates…. I have solid glass Windows now❤️❤️! I wish I would have ordered my new front doors from Anderson Windows. So if you are looking to get new Windows you must go with Anderson Windows!!!"

Celeste Ousley
Jul 13, 2022

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