Is edge insulation needed with drainage mortar for a terrace?

Yes, you need to install edge insulation around the perimeters of the screed when using the StaenisGrid in combination with drainage mortar.

More information about a terrace floor structure
Climate-neutral floor structure
FIT - Flanders - State of the Art Agentschap Innoveren & Ondernemen Vlaanderen Circulair content= Made In Belgium EIT Climate-KIC Netwerk Ondernemen PMV