All of our 25x50mm softwood batten timber is pressure treated meaning it can be used in external applications. As well as being treated our 2×1 batten is sawn and not planed. The timber is also kiln dried so all the boards will have a much lower moisture content this also ensures that the boards will be straighter and helps to improve stability.
 
Making Garden Furniture
Shed Builds
Fencing
Slatted Screens
Roofing Batten