The Dream playden brings a large playhouse to your garden with two storeys and garage for the ideal play room for youn. All Shaws sheds come with Polyester roof felt as standard which is a much better better product than standard felt All shaws buildings excluding tanalised buildings are treated with a water based solution, we do advise however that you treat them immediately after assembly and every year following to ensure longevity. Standard Maltby Pent Features