The construction company Antana has carried out the restoration of an old industrial building in Madrid used as a garage and bus station, with an intervention area of 2,500m2, a duration of 3 months and a budget of 750,000 €.
Structural reconstruction work was carried out and the entire sewage network was replaced, both the rainwater collection network of the adjacent building and the underground network connecting to the municipal sewer.
The building had a skylight which, due to damp, was in a state of ruin, so it has been demolished and subsequently rebuilt using a metal structure of 5-metre-long beams in IPE 220 laminated profiles every two metres and a slab of collaborating sheet metal fixed to them.
The beams have been welded, with welding cord, to existing mixed beams in the building and following the current NTE and CTE regulations.
After the reconstruction of the floor slab, waterproofing was carried out with a double layer of 200g/m2 plastomeric bitumen asphalt sheeting, after applying a coat of asphalt primer, subsequently protected with protective mortar. The slab was then finished with a 20×20 format Catalan tile flooring, topped at the joints with vertical walls with skirting board of the same material.
On the other hand, an intervention has been carried out on the rest of the existing metal structure, which was deteriorated due to humidity. The structure was sandblasted with silica sand to eliminate rust on the profiles and an epoxy resin was applied to prevent further corrosion. Once this intervention had been carried out, passive fire protection was applied by means of a layer of fireproof mortar of varying thickness depending on the dimensions of the profiles.
Finally, work was carried out to consolidate the interior finishes, as the vertical and horizontal walls were badly affected by damp. These walls have been chipped down to the masonry, subsequently applying a corrugated sheet metal and a layer of white mortar on the vertical walls and a layer of plaster on the horizontal ones. Finally, it was finished with a double coat of plastic paint.
Would you like to find out about other building refurbishment projects that we do at Antana? See more information, including plans and photographs.