" I self-built my Oslo summerhouse in June 2014. Managed to do it single-handed, took me a few weeks (including laying the concrete base, which was my preference). Comes complete with detailed instructions, which are comprehensive, but need to be followed carefully as some pieces are very similar. Take it slowly and it all falls logically into place. The design is clever but simple. It has proved itself weatherproof over the winter, and free of draughts even on the coldest days. I would recommend this as a great buy. The timbers need treating, and fitting gutters from the start is really necessary. Finish the outside with an appropriate stain or paint. After nearly a year this building has proved itself. "