Decking above air bricks

Joined
12 Mar 2019
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United Kingdom
Hi all, just a quick one hopefully!

Ideally I want my decking to be no-step from the patio doors, which means the boards will be above the suspended floors airbricks.

There'll be a void of ~100-200mm between the underside of the decking and the subbase. The decking itself will be surrounded by a wall, with board gaps of about 4mm and extends away from the house by 6m

So, basically, I'm just wondering if this is going to be enough free air flow or if I need to come up with something?
 
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