10’x8′ Heavy Duty Summer Shed – Summer Sheds. The Tiger Heavy Duty Summer Shed incorporates additional windows and a generous roof overhang to create a garden building which can double either as a garden shed or a summerhouse. The extra thick framing means that not only is it a very sturdy structure, but also there is additional depth to the inner wall side which is ideal for fitting a variety of insulation to, to create a great garden room space for work, rest or play! 10’x8′ Heavy Duty Summer Shed – Summer Sheds