Here’s everything you need to know about selecting, applying, and finishing wood filler to make a rotted window sill last another decade or more. Let’s clear up a major misconception. The water-based vinyl spackle or the one-part wood putty you use on interior baseboards? Do not use it outside.
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That soft, crumbly spot at the bottom corner of your window sill. The paint is bubbling. A screwdriver sinks in like it’s butter. Your heart sinks: rotten wood. wood filler for rotted window sill
Exterior window sills face rain, UV radiation, freezing, and thawing. Standard fillers will crack, absorb moisture, and fall out within one season. Here’s everything you need to know about selecting,