GRUMO® base mortar, white

Item number: A0006

GRUMO®, the mortar for the design of large concrete objects. Groundbreaking, economical and good quality.


container size

Starting from 11,40 €

including 19% VAT , plus shipping

Available now!

There are variations of this item. Please select the variation you wish.

GRUMO® is ideal for the construction of large sculptures made of concrete. This machinable base mortar can be used for laminating and modelling and for processing large sculptures with a plastering machine using the spraying technique. For smaller workpieces GRUMO® serves to create a strong base body before details are processed with MOMO® modelling mortar. GRUMO® and MOMO® are perfectly matched to each other for this purpose.

The base material is white and can be coloured by adding pigments. The material can be shaped for up to 2 hours and hardens after one day. By mixing with BUMS® universal mortar the set can be accelerated as desired.

GRUMO® results in a weather-resistant and frostproof concrete and, because of its excellent properties, is popular not only for artists but also for DIY enthusiasts who want to make garden figures for themselves.

You can see a selection of objects that our customers have made with GRUMO® HERE. Let yourself be inspired!

Buy BACKSTEIN®, the proven and trusted artists' mortar brand, at a fair price in our online Moertelshop and take advantage of our unbeatable cheap shipping.

Technique: modelling build-up technique laminating spraying
Velocity: slow set
Granulation: grain up to 1.2 mm
Refractory: non refractory
Frostproof: frostproof
Object Size: 3 -10 kg 10 - 500 kg
Safety notice:

Gefahr Achtung


This product contains portland cement and calcium hydroxide.
Causes skin irritation. Causes serious eye damage.
May cause respiratory irritation.

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