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 LoftZone 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 houses however have other, or variable, joist spacing. In that case, you’ll need to cut the Cross-Beams to the right size, so that they span between joists without overhanging or falling short. Cutting the Cross-Beams is easy; just use a saw or tin-snips. The beams are strong thanks to their design but only 0.7mm thick.
If you need help working out exactly how many parts you need, get in touch with us.