The property at 1046 Budapest, Fóti út 66 and 75214/4 is located in the block bounded by Fóti út — Iglói út — kunhalom utca — and road No 75214/3 (walk promenade). On the plot there is currently a transformer house in the north corner and a separate boiler room on the north-east side. The entire building complex is a separate building unit intended for: primary school (primary school). The existing building’s basement-ground floor is 1 floor-2-storey, the main building masses are flat roofed. Works to be carried out together: 1. Facade refurbishment, exterior retrofitting thermal insulation. 2. Replacement of all external doors and windows while maintaining the original masonry slots. 3. Refurbishment of flat roofs, subsequent thermal insulation, slope correction and waterproofing, while retaining existing layers. 4. Thermal insulation from the basement of the slabs between the inner heated spaces and the unheated cellar. 5. Installation of a 48 kW (AC side) solar system The existing building was built in 1961 with traditional structures, 16 classroom brick buildings. The design and state of the building structures are appropriate. For the retrospective thermal insulation of the facades of the building, a certified 15 minutes EPS core thermal insulation system is used in general locations with a thickness of building energy. In accordance with the OTSZ, this system is supplemented by mineral wool core thermal insulation parts in the strips above the windows at a height of 20 cm, on the extreme windows with 30-30 cm overhang and on those parts where the vertical fire propagation barrier (1.3 m) is not present, the entire surface between doors and windows is made with a core thermal insulation system of mineral wool — except in staircases, Section 24 (2) of the OTSZ: "The section of the exterior envelope wall belonging to the same fire section shall be constructed with protection against the spread of facade fires, except... parts of facades belonging to a room forming one airspace, according to the strata structure included in the book. The clinker paved parts stand 5 cm from the facade plane of the existing building compared to the plastered façade planes. Accordingly, the plastered facades are made with 21 cm total thickness (20 cm thick thermal insulation). The thermal insulation system is made on the clinker-covered parts with a total thickness of 15 cm (14 cm thick thermal insulation), with the 15 cm thick thermal insulation system glued to the flat-covered clinker brick, the outer plane of which must coincide with the outer facade plane of the plastered parts (avoiding any facade tins). Surface formation of surfaces Klinker flat covering brick, hand-sown mixed “bread” color. The plinth is made by jumping back 2 cm from the resulting outer façade plane on the artificial stone cladding parts with XPS core thermal insulation, as the artificial stone plinth also jumps out of the original plastered plane by 5 cm, therefore the plinth insulation is made with a minimum thickness of 13 cm (with 12 cm thick XPS core thermal insulation), in each case the outer plane jumps back 2 cm compared to the general façade plane. The surface finish of the feet is BAUMIT MOZAIK TOP resin based on dark grey plaster. In places where the clinker brick casing runs as a plinth down to the lower roof, the connection flat roof plinth EPS thermal insulation + 15 mm OSB3 socket shall jump back 4 cm from the general façade plane. The surface finish of the plinth in these places is the looking folded waterproofing. The doors and windows of the building are replaced uniformly with plastic doors and windows of the same coloured, heat-insulating glazing (Rehau SYNEGO system (80 mm hollow)) in the entire building complex. UF = 1,0 W/m2K, Ug = 0,8 W/m2K (Glass: multifunctional bottle 3.3 VSG Low-e — 10 Ar. Four floats — 10 Ar. — 3.3 VSG Low-e), Uw = 0,94 W/m2K < Standard 1.15 W/m2K) The flat roof, in lying position, with 20 degrees highlighting 204 pcs 255 Wp polycrystalline solar panels with 3 inverters with a power of 16 kW, which is expected to reduce the school’s electricity consumption by 57 800 kWh per year. Project implementation period: 2016.10.01-2017.09.30. Total investment cost: HUF 249 182 274 gross. Aid amount: HUF 223 491 923 gross. Monitoring indicators: Reduction in annual primary energy consumption of public buildings (KWh/year): 653 099 Amount of energy from renewable sources (GJ/year): 612 Annual reduction of greenhouse gases (tonnes of CO2 equivalent): 103,22 Reduction of primary energy consumption achieved by energy efficiency improvements (GJ/year):1739,2673 Additional capacity for renewable energy production (MW): 0,048