Weatherproof under Decking

[BazzaS]

I plan to erect some decking at the far end of our garden. This will afford a sunny place to sit and also replace our dead garden shed. The decking area will be some 18' along the back (stone) wall and 9' out from the wall (and secured to the side stone wall). I intend the decking to be about 1 metre above ground level so providing storage space underneath - above existing patio slabs.
In an ideal world all or most of this "under-deck" storage should be weathertight so the contents stored there will not easily rust/rot/decay.
Do I merely lay the decking boards snug, perhaps on some DPC ? If so then how will the surface water drain off ?
All advice gratefully received.
Thanks

 

[WabbitPoo]

First off, don't ley 'em snug against each other. They'll swell and cause probs down the line. Don't put them directly over a dpc as you don't want the wood in permanent contact with water. You could sling the dpc underneath quite simply I guess.

While I'm on, in our locale, a 1m high deck will need a handrail (BCO informed me recently). Worth checking.

 

[Thermo]

strictly speaking anything over 600mm should have one.

 

[Deluks]

Why not build 1m high shed under the decking? Proper felt roof n all.

 

[big-all]

several flaws i can see in this plan

you either need big supporting timbers or a support every 2ft or so

the decking as said above will not supply any protection

you could utilise the 2 ft space inbetween for storage but what ever you store must be off the ground and must not touch the structure otherwise rot will set in very quick
somthing like watertight plastic storage boxes may fit the requirements and because they have lips on them any random contact with the decking supports would not do any harm as long as the top of the box dos'nt form a resevoire that feeds the wood