Yes. When pressure-treated timber is cut, the newly exposed timber or end grain should be treated with a suitable cut-end or end-grain preservative before it is left outdoors.
Yes. Our product guidance recommends treating freshly exposed timber after pressure-treated products are cut.
Cutting removes the original outer surface and exposes new timber fibres or end grain. For that reason, the newly cut area should receive a suitable cut-end or end-grain preservative before the component is installed outdoors.
This guidance appears across several parts of our range. Pressure-treated wooden gravel boards can be shortened to suit a measured bay, but the new cut end should be treated before installation. Our railway sleepers can also be cut into shorter sections, with the exposed end grain treated afterwards. The same principle applies where compatible treated fencing timber is trimmed during a project.
The important distinction is that pressure treatment of the original product does not mean a newly sawn face should simply be ignored. Complete the cutting first, apply a suitable treatment to the exposed area and then install the timber. Browse our wider fencing timber range when planning made-to-measure or repair work using treated components.