Platform on new construction, renovation, restoration and transformation
Patina designs, constructs, builds, makes sustainable, secures, and manages both flat and sloped roofs. The company prefers to work with regular clients such as government agencies, property managers, and housing associations, based on a results-oriented partnership. The partnership with the Rochdale Housing Association is a great example of this and recently led to the renovation of the upper roofs of five building blocks on Akbarstraat, Schaapherderstraat, and Wiltzanghlaan in Amsterdam. In addition, the tile roofs above the entrances are being replaced.
“In one section, the roof was leaking, which caused the insulation to get wet,” explains Gregory van Sauers, RGS technical advisor at Patina. “That’s why we replaced the entire roof structure. We demolished the roof down to the wooden substructure, after which we installed a new roofing structure with new slope insulation. A two-layer bituminous roofing system then provides reliable and durable waterproofing.”
For the remaining buildings, the existing roof structure can be retained. The roofs will be thoroughly cleaned and repaired where necessary. They will then be retrofitted with insulation to achieve an Rc value of 6.3. “We’ll install PIR slope insulation on top of the existing roofing, followed by another layer of two-ply bituminous roofing,” said Van Sauers.
The tile roofs above the entrances will also be rebuilt. The existing roof tiles and battens will be removed, after which Patina will install a new wooden structure with a vapor-permeable membrane. New ceramic roof tiles, featuring a high-quality glaze and finished in a color that matches the original appearance, will then be laid on top.
The work is being carried out in phases. To maintain a fast pace and ensure quality, Patina always has four roofers working on the flat roofs and two roofers working on the tiled roofs. This ensures that the five residential buildings are not only made watertight again but also prepared for a long and sustainable remaining lifespan.
