We are Pepa Mendoza and Michael Fischer, an architect and designer couple set on bringing well-designed, high performance acoustic solutions within reach of everybody, because sound acoustics matter to everybody; from the well-being of people exposed to noise to the bottom line of companies providing healthier and more accommodating sound environments in its spaces.

Feltum´s works with ecological wool and plant felts as well as with high quality acoustic substrates such as BASF Basotect, woven together into acoustic elements.

We offer lines of standardized products, but we love to work directly with designers to arrive at individual design solutions. Good design and good relationships come from collaboration. Because our production is based on a digital model, not a traditional production line model, our shop floor is an architect´s laboratory. We are excited to learn about you and your project.

Selective Client List





Constellation Brands

Del Lago Restaurant

Gensler Architects

KMD Architects

Notaria 1, Mexico City

Oxigeno Arquitectura

Procter & Gamble

Riverstone Capital Partners



UNAM – Faculty of Philosophy

Universal Music