De or het grondbedekking?

The correct Dutch article is:

de grondbedekking

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

How to use grondbedekking

the grondbedekkingde grondbedekking
this grondbedekkingdeze grondbedekking
that grondbedekkingdie grondbedekking
our grondbedekkingonze grondbedekking
your grondbedekkingjouw grondbedekking
every grondbedekkingelke grondbedekking
which grondbedekking?welke grondbedekking?
a big grondbedekking / the big grondbedekkingeen grote grondbedekking, de grote grondbedekking