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How to Save Your Old Wooden Window From Rot

Traditional wood windows look great, but they do have their disadvantages. One of the biggest drawbacks of wood windows is their susceptibility to rot. Once the damage spreads to the entire window frame, it’s best to take it out and get a new one.

How to Save Your Old Wooden Window From Rot

But if you have detected signs at the early stages of rot, you don’t have to resort to window replacement right away. Something can still be done to salvage your window from rot.

In this article, Renewal By Andersen® of Long Island, a trusted provider of doors and replacement windows, shares some tips on how to repair rotted window caused by condensation.

Repair Tips

Follow these tips to fix the rot on your window:

  1. You can use a chisel to scrape out the rotted wood. Then, drill a series of holes throughout the affected area.

  2. A liquid epoxy consolidant can be used to fill the holes you’ve made. Don’t forget to wear chemical-resistant rubber gloves when working with epoxy.

  3. Fill the holes until the wood is saturated with epoxy and let the epoxy cure for about a week.

  4. You’ll also need an epoxy wood filler to cover the holes and the rotted area. This usually dries in around four hours on a warm day or overnight if the temperature is colder.

  5. You can shave off the excess filler with sandpaper, starting with an 80-grit and progressing into a 120-grit for a smooth finish.

Of course, repairing the rot on a wood window requires certain skills. The task can also be more challenging if you’re fixing rot on wooden patio doors. So if you don’t consider yourself handy, you should call a professional to carry out the job for you. 

Alternative to Wood Windows

If your windows are already beyond repair, get a new one. A good alternative to wood windows are Renewal by Andersen’s replacement windows, which can last for years due to their Fibrex® frames and sashes. Fibrex is a composite material that combines the strength of wood and the low-maintenance features of vinyl. This means the windows won’t rot or decay, so you can be confident the windows will look good for a long time.

Apart from windows, Renewal By Andersen of Long Island has a good selection of french doors. Call us at (631) 206-6773 or fill out our contact form to request a free estimate. We serve customers in Long Island.


"I was very impressed with Renewal by Andersen. They showed up in time and we received several follow up phone calls as the installation was being done as well as the sales representative stopping by to check in on the installation. The delivery/ installer was very professional. I would highly recommend Renewal By Andersen."

February, 18

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