Work done in Sarria district in Barcelona. It consisted of the manufacture and installation of two exit doors to balcony, the space it occupied an ancient wooden doors, whose frames were removed to gain maximum possible light. New aluminium doors were made with the A-70 series manufacturer Alugom in white lacquer finish with a glass 4/6/4 standard camera. Once submitted and leveled the new frames, injected polyurethane foam around the edges to seal and give greater strength to the structure. When dried this foam, it is lined with the same aluminum sheet white lacquer finish and was sealed with neutral silicone the same color. The work was installed on a morning job for two workers, and did not involve any added problem that we had not anticipated. Regarding the wooden doors, the aluminum does not need any maintenance as painted or varnished very typical of wood, also being a metal that hardly suffers dilation or contraction by temperature changes, always set in the same way accurate and precise. The A-70 series is a material that has good value, however, in our range of materials have proven quality series that will meet the demands of the most demanding customers.