Permanently grouting porphyry


Porphyry or polygonal panels must be grouted a bit more durable than is the case with normal patio or paving slabs. So that they are weatherproof and safe, the porphyry plates should be stored in the cement bed. Likewise, the joints must of course be made from the corresponding cement mixture.

Safe hold for porphyry

The asymmetric and uneven edges of the polygonal panels cause these panels to break easily if they are not stored safely. That is why these stones are basically laid in a mortar bed.

Build joints solidly

The joints of the polygonal plates or the porphyry are much wider and more irregular than other plates. Thus, the boards also get a secure grip sideways, a sand mixture for the joints is not enough.

Grout for stones

The corresponding natural stones are incompatible with every grout. You should therefore consult your building materials dealer, which mass you bring into the joints. Otherwise it can lead to unsightly efflorescence and discoloration.

Cover after grouting

The joints are grouted just like paving stones. It only needs to be taken care that during the first dry season no rain falls on it. Therefore, the terrace or the walkway should be covered.


Video Board: Flowpoint July2011