When repairing timber, the right product makes all the difference. Wood filler and wood repair epoxy are not interchangeable; choose the wrong one, and your repair may only last a season. Understanding where each works best ensures stronger, longer-lasting results.
Wood Filler: Quick Fixes
Wood filler is best suited for small, cosmetic repairs indoors. It’s easy to apply, dries fast, and sands smooth perfect for nail holes, minor dents, or light surface touch-ups before painting. However, it shrinks and cracks over time and simply doesn’t hold up in exterior conditions or structural applications.
Wood Repair Epoxy: Lasting Strength
Wood repair epoxy, such as Sellaseal DT, is designed for serious, long-term timber restoration. Unlike filler, it bonds deep into the timber, cures waterproof, and resists shrinkage or cracking. This makes it the go-to choice for window frames, thresholds, structural joins, and rotten timber rebuilds. It delivers strength and durability where ordinary fillers fail.
When to Use Each
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Wood filler: quick interior touch-ups, light cosmetic fixes, paint prep.
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Wood repair epoxy: exterior timber repairs, structural restoration, high-wear or moisture-prone areas.
Why Sellaseal DT?
Sellaseal DT epoxy is engineered to outperform traditional fillers. It offers the structural integrity, weather resistance, and long-term protection needed for timber exposed to the elements. For both professional trades and DIY renovators, it ensures repairs remain solid and seamless year after year.
For small, fast fixes indoors, filler does the job. But when the goal is lasting timber repair and peace of mind, epoxy is the clear choice. Sellaseal DT gives you confidence that every repair will stand the test of time.
View our range of different epoxy products here.