General Questions

LoftZone StoreFloor is suitable for almost all lofts, new and old, including cut, purlin and truss-roofed types. It's frequently fitted in both houses and commercial buildings, and is the only product that has official approval for use in new-build properties in the UK. Your joists will be need to be made of wood and be at least 32mm (1.25") wide and 50mm (2") tall.

The vast majority of joists in the UK are either 400mm or 600mm apart (measured from the centre of one joist to the centre of the next one). That is why our Cross-Beams are designed to span 1200mm, so they fit perfectly. Importantly, there is also up to 75mm tolerance in case your joists weren't built exactly to these dimensions (many weren't!). And because the Cross-Beams bridge over intermediate joists, if you find there are any that are uneven or warped, you can just miss these out. So for most UK properties, everything will work fine.

Some older properties do cause certain issues when the joists are of uneven height or not flat. This doesn’t stop StoreFloor being fitted, but it’s worth considering the following points:

  • The first point to note is that StoreFloor bridges over, and completely misses out, most joists, since the Cross-Beams span 1200mm. Therefore, with a bit of planning, you can often choose to place the supports in such a way as to completely miss out the joists that cause the problem.

Occasionally however you will find that, even with the best planning, some of the joists you fix the supports to could be higher than others, or too uneven to screw into. The way our installers get around this is either by fitting a wooden shim underneath some supports, to make everything level, or to screw a small new piece of wood to the side of the original joist, and to fit the support on to that. If you'd like someone to install your kit in these circumstances, please visit Nationwide Loft Storage to find your nearest Approved Installer.

Yes you can, but you must use StoreFloor. Most new houses have truss roofs and the British Standard says that the joists must be able to carry a permanent load of at least 25kg per square metre (e.g. for storage) plus a temporary load of 180kg (assumed to be one person walking around). Every new house has to be built at least to this minimum legal standard, though many can in fact accommodate much more storage.

Despite the joists being strong enough, many new house builders recommend that you don't board a loft. This is because the traditional method to raise the deck (using extra wooden joists) is very heavy and, since 2013, contravenes Building Regulations in the UK as the wood allows heat to escape through the insulation. But StoreFloor is OK as it is very light and does not suffer the heat loss problem like wood does.

Brand new houses are actually one of the biggest markets for StoreFloor, with thousands of happy customers. StoreFloor, when installed correctly, will also not void a NHBC warranty.

StoreFloor is extremely strong; LoftZone is the only raised loft floor manufacturer to have put its products through robust accelerated lifetime tests, in extremes of temperature beyond those normally found in the UK. Even in these conditions, a StoreFloor deck survived loads of over 500kg per square metre, without failure.


In addition to being strong itself, StoreFloor's lattice-beam structure also strengthens the joists it is screwed into. Nonetheless, StoreFloor is only intended for storage and occasional access, and we recommend that you don't overload your joists. If in doubt, consult a structural engineer.

We sell a number of standard-sized kits, from 3m2 (32 sq. ft.) to 52m2 (576 sq. ft.). A number of our kits come in a standard square shape. For new-build homes, which tend to have longer, narrower roofs, there are kits specifically designed for this style. We also sell individual parts, so if you'd like a non-standard shape, get in touch and we'll let you know exactly how many parts you need.

If you want, you can decrease/increase sizes to match your needs exactly by moving the rows of Cross-Beams closer together, or by letting the boards overhang the beams slightly. If you need to, you can also cut the Cross-Beams, just use a saw or tin-snips. You may have to cut the boards too if you choose a non-standard size.

We sell kits both with and without loft boards. We also offer kits with loft ladders and boards as a complete package deal. All details about kits and what is included can be found at our store.

Most people would like to board their whole loft, but you don't have to. StoreFloor is modular so you can start small and build more later when your storage requirements go up. Most people choose a square or rectangular deck, or an L or T shape near the hatch. Some people have more than one deck, on either side of the hatch. Don't board right up to the eaves though, as you'll want to keep a gap there for ventilation.

Our kits are set up to be installed as a DIY project, but we know that some customers are not comfortable working in a loft for a number of reasons. We do have an approved installer network for loft boarding.

Please visit our sister website, www.nationwideloftstorage.co.uk and enter your postcode and contact details. Your nearest LoftZone Approved Installer will then get in touch to provide a free, no-obligation quote.

The deck will be raised 279mm above the top of your joists. This is to allow for a full depth of loft insulation (up to 350mm, measured from the floor of the loft) plus an air gap above the insulation and below the boards. This essential air gap is there to allow air to flow over the insulation, thereby taking away any humidity which might otherwise condense on the underside of the boards and cause damp. We took advice from the Buildings Research Establishment for the size of the air gap during the design phase – hence the 279mm.
The StoreFloor Cross-Beams are 1150mm (about 45") long. They span over 3 or 4 joists (depending on your building's joist separation) and have an easy sliding adjustment, in case your joists are not spaced regularly (most aren't!). The Cross-Beams rest on top of the Tri-Supports, where they can butt up against each other, or be positioned a few inches apart.

The StoreFloor Tri-Support and Uni-Support are both 279mm (about 11") tall, and rest on the top of the joists. This is sized to allow the full depth of modern insulation levels plus an air gap above the insulation and below the boards. This air-gap is there to allow ventilation, to remove any possible moisture build-up on the underside of the boards. Beware any products which don't provide this essential air-gap!

Boards are standard tongue and groove chipboard flooring, measuring 1220 x 325 x 18mm.
We provide one Uni-Support for every second Cross-Beam in our kits. For storage of up to 25kg per square metre and infrequent access by one person, this is sufficient. It's usual to place the Uni-Supports evenly underneath the deck, or you can concentrate them in the area which is likely to get the most loading. 


If you wish to have a higher load on the deck, or walk upon it frequently, then we advise one Uni-Support fixed under every Cross-Beam, to provide additional stiffness and to spread the load. Additional Uni-Supports are available to buy from our website.
Orders will normally be delivered in 2-3 working days, and always within one week. You can specify your preferred delivery date in the comments section when you order online and we will pass this on to the courier. If it's urgent, let us know and we'll do our best to speed things up. We use UPS, FedEx and Palletways as our main delivery partners. We do ship worldwide; if you are outside of the UK or Ireland, you can buy on our international website, www.loftzone.com.

If you are not going to be in when delivery is made, you can let us know a safe place to leave the parcel (shed, porch, conservatory, neighbour etc), by specifying this in the comments section when you order online. Some people choose to have everything delivered to their workplace. As a guide, a Medium Kit (or smaller) without boards will fit into most hatchback or estate cars, with the back seat down.

You can also collect from our warehouse in Leicestershire (postcode LE9). Please contact us to book in your collection.

All StoreFloor kits (without boards) and loft ladders are shipped at a flat rate within the UK of £12 (Monday-Friday) or £25 (for The Republic of Ireland), regardless of how many items you buy. Kits with boards can only be sent to mainland England, Wales and southern Scotland, owing to their weight. You can, however, buy boards from any local DIY store.

If you are collecting your order from our warehouse in Leicestershire, then there is no delivery cost. Please contact us to book your visit

We offer all our customers a full refund for any unused parts, so long as you return them to our warehouse within 28 days of receipt. You will need to pay the return postage, that’s all. Get in touch with us (by phone or e-mail) before you send anything back, so that we know why, and so that we know who it’s coming back from.