All of our sheds/summerhouses are available in the following thicknesses of timber. This item is in the category Garden & Patio\Garden Structures & Shade\Sheds, Summerhouses & Carports. Garden shed workshop super heavy duty tanalised 14x10 apex 19mm t&g 3x2 managing director david clayton of northern garden sheds ltd was awarded young business person of the year 2013 in the journal annual business awards and also received the david goldman award for innovation and enterprise.