Metal

The façade of San Telmo museum manages to extract all the design potential from the succession of layers. The surprising thing in this case is that the architects are not limited to the façade layers but, in their proposal, they consider as layers the different planes that follow one another when making a transversal cut to the building. They get that the built volume and its limits - façade and mountain- merge.

Amazing!!! Apparently formal, exaggerated, gratuitous… nothing could be further from the truth!!!

This façade is covered by an extraordinary sun and rain screen. Try to drive the rain water to the inside… impossible!! Only a horrible wind could achieve that by moving water against gravity. 

About the filtering function: filt3rs.net

In filt3rs we talk about “A unique wrapping”, P. Garrido and J. Prous in “Deep Skin” refer to “Burqas and veilings”. In any case, this project from IDOM is also subjected to this tendency to cover the building with a continuous skin, more or less abstract, placed over a more functional enclosure.

In this occasion the interior is glass and the outer skin a perforated metal sheet that reproduces the image of a green landscape.

Little to say, just a master!

Probably the first architect working among other things as a façade specialist.

Probably the first that strongly bet on the façade prefabrication.

More information filt3rs.net

A very interesting façade concept.
This facade brings together all those adjectives that architects use to describe those enclosures that are “trending”: integrated, active, flexible, and perfectible.

Very suggestive sun protection mechanism.

A design that in a frontal vision would seem to be a simple formalism, takes on interest as it grows inward like vertical slats. Including those slats into a partially perforated plane with an abstract composition permits escaping from the conventional slats image.

In this orientation, northwest, the system perfectly obstructs the solar radiation of the last hours in summer days without limiting the visuals to the street or the light entrance.

This building, and its facade, could easily go unnoticed. It is correct, without bragging.
However, we wanted to draw attention to a very specific and pedagogical aspect. Even though the two façade systems being used are both formed by two sheets and a cavity in the middle, their behavior is very different. 
The outer layer made of flat plates with open vertical joints allows the entry and exit of air and water to and from the cavity through the joints. It is a ventilated and drained facade. 

We are pleased to have the opportunity to speak about a façade capable of expressing so much sensitivity regarding the context and its functionality, while manifesting itself as an impeccable jewel in the chromatic composition at short and medium distances.

Again, this Catalan studio proposes a clear and simple façade. The dry constructed façade is based on three layers: the main one resolving air and water tightness, an inner cladding and an outer one. It might be thought that the façade works properly just with the main sandwich layer (like the Courts extension in Zaragoza). However, both claddings are needed for improved behaviour.

Batlle and Roig resort in this occasion to a curtain wall where partial structures are assembled at each slab front without physical continuity between them. Glass panes are then supported over those partial structures to close the façade (have a look to "Cadireta" curtain wall structure). Each two glass panes are framed with an aluminum frame made with unitized panels profiles. Is it then a unitized façade or a curtain wall one? Maybe a mixture?