CS IV PREPABASE Undercoat

Effectively prepare your substrates before installing cladding

Before installing any cladding, it is essential to properly prepare the substrate to ensure adhesion and durability. Matiera offers two technical undercoats, designed to adapt to the different types of walls encountered on construction sites, both in new construction and renovation.

Prepabase is recommended for so-called traditional substrates: breeze block, concrete, or masonry brick.

Prepatech, on the other hand, is designed for more specific or fragile substrates such as lightweight breeze block, lightweight concrete, or bonded brick.

These undercoats are applied before installing the cladding to even out the substrate, promote adhesion, and prevent any risk of detachment or cracking. Installation by Substrate

Outdoors, installation varies depending on the type of wall:

On breeze blocks, concrete, or masonry brick: Apply Prepabase, then apply a suitable adhesive mortar (flexible or high-performance depending on the presence of joints).

On lightweight concrete, lightweight breeze blocks, or bonded brick: Apply Prepatech, followed by a high-performance adhesive mortar.

On formwork concrete: Apply directly with adhesive mortar, without undercoat.

Indoors:

On breeze blocks or formwork concrete: Apply directly with adhesive mortar.

On plasterboard, aerated concrete, or cement-based render: Apply a primer first, then apply adhesive.

In all cases, the wall must be dry, clean, dust-free, and level. The cladding is installed using a double-bond system (wall and back of the cladding). Indicative coverage

Prepabase: approximately 1.5 m² per 25 kg bag

Prepatech: approximately 1 m² per 25 kg bag