Application for an energy renovation project with EU-FUND co-financing (project in preparation)

Following the decision of the co-owners, we have submitted the application for the "Kamenjak 3 in Pula" building to the tender for the energy renovation of multi-apartment buildings NPOO.C7.2.I1.01.

The main objective of the energy renovation project of the multi-apartment building at Kamenjak 3, in Pula is to present the current state of the building and to provide construction measures to improve the energy efficiency of the building, which will improve the conditions in the building for all users and reduce heating and cooling costs.

The purpose of the building is predominantly residential. The residential building has a square floor plan.

The net area of ​​the heated part of the building is 4,982.99 m2, while the gross area of ​​the heated part is 6,188.47 m2.

The outer envelope of the building consists of reinforced concrete walls with a thickness of d=40 cm on the ground floor and basement, and d=20 cm on the other floors, plastered only on the inside. The walls on the north facade, and on parts of the east and west facades, which are on the border of the heated and outdoor space, are covered with thermal insulation EPS with a thickness of e=5 cm.

The wall facing the corridor is made of reinforced concrete with a thickness of d=20 cm, and plastered on both sides with lime-cement plaster. The total thickness of the wall facing the corridor is d=24 cm. The floor on the ground is made of a concrete slab with a total thickness of d=14 cm, on which a cement screed of d=3 cm is placed, which is also the final layer. The flat roof of the building is a reinforced concrete slab with a thickness of 12 cm, on which a sloping concrete of d=6 cm and waterproofing are placed. The entrance door to the building is aluminum.

The building has a fire escape staircase, for evacuation in case of fire, which borders the corridor, separated by black metal locks with two entrances/exits. On the fire escape staircase on each floor there is an open terrace for smoke extraction in case of fire.

The building is heated locally. The apartments have a heating system using air conditioners and thermal storage furnaces, and partly using solid and gaseous fuels (wood and gas).

The existing building is in energy class C, with an annual primary energy (Eprim) for heating of a starting value of 525,239.51 kWh/a. The target value after energy renovation would be (Eprim) = 359,966.58 kWh/a, which would be a contribution of = 165,272.93 kWh/a or 31.47%.

Annual CO2 emissions before energy renovation = 90,253.66 kg/year. Annual CO2 emissions after energy renovation = 59,262.79 kg/year. which is a contribution to reducing CO2 emissions of -30,990.87 kg/year, which is = 34.34%.

In preparation, the existing thermal insulation from the external walls and ceilings made of EPS with a thickness of d=5cm will be removed completely to the solid base. The height of the facade is up to 40 meters. The layers will be removed to the load-bearing base of reinforced concrete and aerated concrete. The removed material will be adequately disposed of, protected, loaded and taken to a landfill for EPS recycling and further use for floor thermal insulation.

The measures envisaged by this energy renovation project are: performing thermal insulation on the external walls by creating an ETICS system according to the manufacturer's instructions, all preparations: stone mineral wool d=8cm for walls bordering the heated space, stone mineral wool d=12cm and d=3cm for the ceiling lining on the ground floor of the building, stone mineral wool with a thickness of d=5m for walls that do not border the heated space, stone wool with a thickness of d=2-3cm for the treatment of the window sills.

Thermal insulation of a flat walk-through roof-terrace with hard rock mineral wool for flat roofs d=10cm, the insulation is installed in two layers with offset overlaps while following the existing slopes on the flat roof. Before that, a vapor barrier made of synthetic foil based on high-density polyethylene d=0.15mm is installed.

The existing wooden joinery will be partially replaced with new PVC joinery, with an interrupted thermal bridge, sealed with all fittings and PVC profiles that have the ability to collect and drain condensate. With external sun protection (blinds), the glazing will be made with triple IZO glass with gas filling, low-e coating and triple sealing with a defined maximum heat transfer coefficient for the entire window Uw=1.10w/m2K, while the coefficient for glass is equal to Ug=0.70W/m2k.

The installation of joinery shall be carried out exclusively using the Ral method of installation, using special sealing strips intended exclusively for this type of sealing. The color of the joinery is white.

After implementing the measures envisaged in the Main Project for the Energy Renovation of the Multi-apartment Building, energy consumption will be significantly reduced and the energy class will be A, and the savings envisaged according to the budget data from the main project.

The purpose of the energy renovation of the multi-apartment building is to improve the conditions in the building for all users, as well as reduce maintenance and heating costs, as well as reduce pollution and harmful CO2 emissions. The existing building was built in 1978, and has great potential for implementing energy efficiency measures that will be carried out in accordance with the Main Project for the Energy Renovation of the building at Kamenjak 3, Pula. Currently, the building looks aesthetically untidy in its environment.

Share of energy from renewable sources in the annual energy delivered before energy renovation, starting value: = 36.24%. Share of energy from renewable sources in the annual energy delivered after energy renovation, target value: = 23.99%.

Increasing the share of energy from renewable sources in annual energy supply, contribution: = -12.25%.

Current condition of the building:

According to calculations, the building currently has high energy consumption and emits a large amount of CO2.

The roof is not thermally insulated, and the facade is partially insulated with EPS, which has become hygroscopic due to its longevity (46 years) and has lost its thermal insulation properties.

The building envelope does not have any thermal insulation on a larger surface area, which causes large energy losses when heating/cooling the space.

The building's joinery is mostly wooden and has become permeable over time.

Due to the current condition of the facade and roof, leaks, moisture, condensate and muffling appear in the heated spaces, which makes the microlocation unhealthy for living.

The purpose of the building is predominantly residential. The residential building has a square floor plan. There are storage rooms in the basement of the building (unheated part).

The outer shell of the building consists of reinforced concrete walls with a thickness of d=40 cm on the ground floor and basement, and d=20 cm on the other floors, plastered only on the inside. The walls on the north facade, and on parts of the east and west facades, which are on the border of the heated and outdoor space, are covered with thermal insulation EPS with a thickness of e=5 cm.

The wall facing the corridor is made of reinforced concrete with a thickness of d=20 cm, and plastered on both sides with lime-cement plaster. The total thickness of the wall facing the corridor is d=24 cm. The floor on the ground is made of a concrete slab with a total thickness of d=14 cm, on which a cement screed of d=3 cm is placed, which is also the final layer. The flat roof of the building is a reinforced concrete slab with a thickness of 12 cm, on which concrete with a slope of d=6 cm and waterproofing are placed.

The heating of the building is local. The apartments have a heating system using air conditioners and thermal storage furnaces, and partly solid and gaseous fuels (wood and gas).

WE ARE LOOKING FOR YOUR HELP IN CARRYING OUT THE WORKS DURING THE PROJECT!

WE ARE LOOKING FOR:

Contractor for the construction of the facade system
Contractor for the construction of the building's insulated roof
Contractor for the construction of PVC joinery
Contractor for the removal and installation of air conditioners
Authorized company for supervision of works
Company for the construction of advertising billboards
At your request, we will provide project cost estimates.