With a generous 21.5m² of interior space as well as a useful 3.7m² veranda, the 21x15 Palmako Sandra is full of potential and ready for you to create your perfect home office, entertainment room or a mix of many uses. Made from high quality Nordic spruce, the 70mm interlocking logs are chalet-cut for improved protection against wind and rain. Further strength and stability is provided by threaded rods (which increase wind protection) for a robust, durable garden cabin. At 70mm, this is one of the thickest logs offered, providing a garden room suitable for year round use. The notch corners add a traditional appeal. The roof and floor are constructed from 19mm tongue and groove cladding, well-known for its weather resistance, durability and strength - with the floor also being supported by treated foundation joists providing a long-lasting and hardwearing surface for the many years of use this space will receive. Offering ample light and ventilation, this garden cabin features a half-glazed doors as well as a four tilt-and-turn opening windows. All are double glazed with rubber seals providing enhanced insulation for the garden cabin. The doors also benefit from a stainless steel door sill to protect this high traffic area and 3D hinges to allow for exact adjustments on the x, y and z axis. For increased strength and improved resistance to adverse reactions to extreme temperatures, such as warping or cracking, the door frames are laminated in construction. A key-operated cylinder lock provides security. A five year guarantee supports the high quality of this garden building. The garden cabin is supplied untreated; we would recommend that an initial anti-fungal treatment is applied and repeated annually thereafter to support the guarantee. Alternatively, paint could be applied to suit your preference or garden design. Unless you possess advanced DIY skills, we advise hiring a professional to instal this garden building. Please be advised that the roof does not include a cover as standard. Select from SBS, Charcoal Felt Shingles or Roof Felt Underlay as an optional upgrade. (SBS weatherproof roof covering is a thick, torch-on felt with an exceptionally long lifespan and outstanding weatherproof qualities. Unless you possess advanced DIY skills, we recommend hiring a professional installer. Heavy-duty Charcoal Felt Roof Shingles are a permanent weatherproof roof covering, which is attractive, easy to instal and extremely durable. Roof Underlay Felt is simple to nail on to the garden building but is only designed as a temporary solution until you have added a permanent weatherproof roof cover upgrade.) The Sandra from Palmako is also available as a 25x16 log cabin. 5 year manufacturer's guarantee High quality, interlocking 70mm Nordic spruce logs 19mm tongue and groove flooring and roof Double glazed throughout Aluminium window gutters Laminated door frame for resistance to warping under extreme temperatures Stainless steel door sill cover 3D hinges to allow for exact adjustments on the x, y and z axis Installation service available to purchase. Please select from our Options and Accessories Menu *** Please note: a roof covering is NOT included. Please purchase from our Options and Accessories Menu ***