Loftzone solves some serious building challenges

  • Homebuyers want to use the loft for storage
  • CDM requires safe raised access in the loft space
  • Part L requires deep insulation
  • Part P requires cables to be raised above the insulation
  • Loftzone is the only one solution to all of these


Although many house builders have historically discouraged buyers from using their loft for storage, the British Standard for roof trusses (BS5268) permits up to 25kg/m2 of storage plus the weight of one person (assumed to weigh up to 180kg) accessing the belongings. As such, it is no surprise that homeowners routinely use their loft for storage and, as a result, typically squash their insulation. However, tests by the National Physical Laboratory found that compressing insulation down to joist height reduces its effectiveness by at least 50%, thereby at least doubling the heat lost.

Safe Maintenance Access.

It has long been a legal requirement for new house builders to provide safe access pathways to equipment in the loft that will need maintenance, for example MVHR units, solar inverters and gas boilers, and recently this requirement has been strengthened with the Construction Design and Management Regulations 2015, which states that “designers must consider their designs and any potential risks which may affect those who may maintain or clean the building once it is built”. At the same time, the loft must be insulated to at least 0.13 U-value and it is against Part L1A of the English 2013 Building Regulations to use raised timber battens to raise the safe access path above the insulation, without taking account for the cold bridging through the wood which changes the SAP score for the roof. This poses a major challenge to house builders, since using raised timber battens was hitherto the standard industry practice.

LoftZone StoreFloor uniquely solves this problem, in a way that is designed for new build. The product forms the structure for a safe access deck above up to 350mm of insulation, without causing cold bridging, whilst being cheaper and faster to install than timber anyway. LoftZone StoreFloor has passed all required industry tests and is the only raised loft floor system that is BBA certified. Our next generation products will also be able to accommodate depths of 450mm.

Raised Services

According to Part P of the 2013 English Building Regulations, electrical cables must not be covered in insulation. When the regulation in Part P is enforced, cables must not be covered in insulation and they must be securely clipped. With our next generation of StoreFloor, it will be even easier to comply, with a more flexible cable management system.

Providing Storage Space in the Loft

LoftZone StoreFloor uniquely allows new home builders to safely allow house buyers to use their loft space for storage, in a way that has passed all required tests, and even for modern truss roof properties. In fact, the lattice-beam structure of the product strengthens the joists. Direct sales to homeowners is one of the biggest markets for StoreFloor, but it may also be offered as a costed option by the homebuilder, prior to the purchaser moving in.

Technical Info

Architects and builders can find full technical documentation on LoftZone at SpecifiedBy