Step 1

In a clean container add 4.6-4.7 liters of clean water and gradually empty the content of the bag (25Kg) while mixing continuously, in order to produce a homogenous mass of mortar

Step 2

Leave the mixture to mature for 3 min and mix again briefly. It is also recommended to periodically mix the mixture for as long as the repair lasts. Do not add additional water to correct the workability of the mortar. This shall lead to a decrease of resistances and to the increase of its shrinkage.

Step 3

REPIFIX EXTRA WRM 512 is applied like common plaster or common masonry mortar. For application as a plaster, it is normally rubbed with a spongy flute. Note that the waiting for the rubbing process varies with temperature changes, substrate absorbency and mixing water ratio. Apply the first coat of plaster using the repair mortar REPIFIX EXTRA WRM 512, paying attention to bring the repairing plasters back to contact with the existing masonry and old plaster surfaces. Wherever necessary, insist on the trowel to ensure better contact. Next, when the first coat is applied, continue with the application of a second final coat. When pulling and the final layer has passed through the bar, it is ready to be smoothened out wherever necessary.

Step 4

It is recommended to reinforce REPIFIX EXTRA WRM 512 with glass mesh in substrates of heatinsulating panels (eg polysterene slabs). The glass mesh is placed as follows: A first coat of plaster is applied and while still fresh, the glass strip is pressed gently inside the plaster. Then, a second and final coat is applied. It is necessary that the mesh is fully incorporated with REPIFIX EXTRA WRM 512 and located at 1/3 of the layer’s thickness from the outside to the inside. Finally, the mesh should also cover the area on both sides of the thermal insulation plates by 10-15 cm.