The Shire Sentry Shed is great for those that want extra storage space but without taking up too much garden space. All the timber is from sustainable sources, so that you can feel good about buying this storage shed. Shire garden storage buildings are made from a high grade ship-lap tongue and groove construction. This is distinguished from fast grown type timber used on cheaper sheds from other manufactures. Tongue and groove construction means the building is better sealed from the elements. The timber used is a continental slow grown timber. Slower grown timber means tighter grain, extra strength and longer life.