Visible cracks on exposed end grain of timber components is normal. The end grain is the part of the timber where the growth rings are exposed. Although we aim to keep the presence of end grain to a minimum to reduce the risk of splits and cracks, it is sometimes inherent in the design of our product. As the timber is exposed to changes in temperature and humidity, small cracks will open in the end grain. This will not affect the strength, performance or life expectancy of the product. In fully exposed positions, the cracks will appear quite quickly, and will be deeper. In covered locations, the cracks will be less visible.