Getting me one of these:
http://www.waudbys.co.uk/products/details/23954.html
For this:

Fitting must be done (in our case), by a Bailey-approved centre so as not to invalidate the caravan warranty though.
So what are the Alutec vans like then Seth?
Looks nice 
Personally, I'm well-impressed with what Bailey have achieved with their Alutec construction principle.
The equipment level/specification is impressive, and it's MTPLM is compatible with our TD Estate.
Dampness and failure of structural integrity have long been the Achilles heel of many touring caravans which have traditionally featured 'composite' construction. The Alutec system sets out to overcome these frustrations, whilst retaining structural rigidity/strength.
Take an in-depth look here:
http://www.baileyolympus.co.uk/ and you'll see it all.
We've had the 5-berth '525' model, which amazingly is not available in the 2012 range.
Here's the 'van that it replaced, and this one has evidence of previous damp repairs in the O/S/F corner: