Roncz Ernö AG

Our company has been based in Gossau SG for over 35 years. With a skilled team of 25 employees, we specialize in the following types of work in conversions, new builds, and renovations:

• Subfloors
• Hard concrete coverings
• Self-leveling screed
• Insulation work
• Cement coatings

A modern, functional fleet of machines and vehicles enables us to complete all orders efficiently and on time.

Subfloors

Screeds are versatile. They are often used for underfloor heating or to conceal the technical equipment in a room.

Screeds and hard concrete coverings

The subfloor and hard concrete covering are mixed directly on site and pumped to the floor surface. It is then leveled and smoothed by hand.

Self-leveling mortar

Anhydrite - flowable mortar

The flowing mortar is mixed and poured on site, then levelled precisely with a laser.

Insulation

Heat and impact sound insulation

We install all types of insulation, for example Roll Alu TSE PE bonded with underfloor heating.