How To Repair Rotted Wood On A Window Frame

In House Stuff | |

Repairing rot on your window sill may seem like a daunting task and many of us, especially if you don’t know what you’re doing. Calling in an expert to come take care of the problem might seem to be the easier option, however, you can save yourself quite a bit of money by repairing it yourself. Rot is caused by the wood being exposed to the elements and moisture especially. By using a few tools you’ll find that repairing rot on a window frame is quite an easy task.

Step One: Preparing to Repair

Before you start cutting or chipping away, it is always best to make sure that the rot hasn’t spread to the point where the entire window and frame will need to be replaced. Repairing the window yourself is only beneficial provided the rot hasn’t spread to the interior of the frame. Once you’re sure that the rot is in an area small enough and on the exterior of the frame, you need to gather the right tools. You’ll need a chisel or flat head screwdriver, 100-grade sand paper, a coarse brush a drill with a ¼ inch drill bit, wood filler, and paint suitable for the outdoors.

Step Two: Begin The Repair

Wood exposed to rot will be soft and crumble easily, at this stage, use the flat head screwdriver or chisel to ‘cut out’ the rotted wood. You will need to remove as much of this rotted wood as possible, so don’t be afraid to keep going, the healthy wood will be hard and difficult to chip away. Once all the soft wood is gone, use the brush to remove any excess debris, sand the area down and remove the dust with the brush or a rag.

Step Three: Fill The Gap

The wood filler acts as both a filler and an adhesive, however, if you can’t get your hands on wood filler you can use car filler or epoxy. Whichever product you end up using, mix to the manufacturer’s instructions and fill the gap. A large hole may require more than one batch. After 15 minutes or so, the fillers will become spongy in texture and you can use the chisel to scrape the filler to become uniform with the surrounding wood.

Step Four: Final Touch Ups

The filler will take about 3 hours to harden completely, unless of course otherwise stated by the manufacturer. When it is completely hard, you will need to sand it down again with the sand paper in order for the repair to be completely uniform with the surrounding wood. After wiping any dust off with the rag, you will need to do one last thing; painting. It is important that you use a paint specially-designed for protecting against the outside elements, otherwise, you’ll find yourself enjoying this exercise again sooner than you’d like. You can either find the exact same color as the surrounding frames or, if you prefer, repaint all the frames for complete uniformity.