No, all of the kits we supply come with pressure treated bearers that the building sits on, but the building itself is not treated and is supplied as bare wood. We recommend painting the building using Jotun Visir which is a clear basecoat, followed by 2 coats of your preferred finish. We stock all Jotun, Butinox, Spencers and Sikkens paint and would be happy to advise you on the correct finish.
What about inside?
Most customers do not do anything to the inside walls, however it is possible to paint, stain or oil them if required. You would be advised to apply a few coats of a good quality flooring oil on the floor just to protect it from wear and tear. Varnishes should be avoided on the flooring as they tend to stick the boards together and prevent the natural movement of the timber.