Norland Garden Sheds are a Log Cabin style shed. This means that the building is delivered timber by timber and is simply assembled on site. Each piece of timber is notched in such a way that no screws or nails are required in the assembly of the shed walls. If access is difficult this type of shed can be a very good option. The sheds are delivered without any timber treatment (except for base beams where stated on the product page). They are easy to build and a remarkably speedy proposition. The Norland Sheds use mainly 19mm or 28mm (as per product page) thick wall logs. Most standard garden sheds would use 12mm shiplap or the more budget ranges can go down to 9mm overlap.