The Hartwood 5m x 4m Newton Log Cabin, The apex roof design of this model is a more traditional look, also allowing extra headroom in the centre of the room. The impressive size of this shed makes the Newton a very usable and versatile addition to your living space. Three Felt options are available for this Log Cabin, Polyester felt without underlay, with underlay or a higher grade Polyester felt with underlay. We recommend the upgrade to Polyester felt with additional black sand felt underlay.