De or het dakdichting?

The correct Dutch article is:

de dakdichting

Rule Words ending in -ing: almost always de. See the rule

How to use dakdichting

the dakdichtingde dakdichting
this dakdichtingdeze dakdichting
that dakdichtingdie dakdichting
our dakdichtingonze dakdichting
your dakdichtingjouw dakdichting
every dakdichtingelke dakdichting
which dakdichting?welke dakdichting?
a big dakdichting / the big dakdichtingeen grote dakdichting, de grote dakdichting