‘Green Oak’ is Oak that was felled in the last 12 months, and as such has a high moisture content, typically around 20%. The Oak will slowly dry out over the course of a year or 2, until its moisture content matches its environment. As the Oak dries, it will change shape as well as develop splits and cracks. This is what gives Oak its character as time goes by. Often the Oak beams we use to make all our furniture come with splits and cracks in them (as a result of the drying process). Whilst we use the best face of the Oak beams, sometimes there will be splits in our products as they are an unavoidable feature of Green Oak.
If your product develops splits that have sharp edges, you can sand the edges using some 120 grit sand paper and treat the newly exposed timber with two coats of Manns UV Decking oil to protect the area.
Also in some instances, it is possible that tannin oils may be washed by the rain from the oak and cause staining on the floor beneath.