Spray Foam Properties and Advantages. J.Goetz / IC

Transcription

1 Spray Foam Properties and Advantages J.Goetz / IC

2 Overview External insulation on roofs Internal insulation between the rafters Internal insulation in timber frame construction Insulation on loft/attic floor External insulation on industrial roofs Insulation on solid flat roofs / terraces Insulation on floors Internal insulation of agricultural buildings Internal insulation with facing wall Internal insulation with curtain wall External Insulation behind cladding / Ventilated Façade External Insulation between masonry walls 2

3 Overview Properties Thermal Conductivity Reaction to Fire Water Absorption Water Tightness Vapor Permeability Compression Resistance Advantages The best thermal conductivity Prevention of thermal bridges/no joints Insulation by trained professionals Fast installation Adhesion to the substrate Adapts to the shape of the substrate Mobility Air tight Water Impermeability Moderate vapour permeability 3

4 Properties Thermal Conductivity Thermal Conductivity Ageing The foam undergoes a natural aging process due to the interchange of cell gas with air. Initial Value l < 0,022 W/mK Gas interchange Aged Value l < 0,028 W/mK The aged lambda value is used for calculations. 4

5 Advantages Thermal Conductivity Thermal Conductivity Best Thermal Conductivity Spray Foam has the best thermal conductivity coefficient of any insulation used in construction. Insulation Material Thermal Conductivity Coefficient Polyurethane Foam 0,028 W/mK Expanded Polystyrene EPS 0,030-0,047 W/mK Extruded Polystyrene XPS 0,029-0,037 W/mK Mineral Wool 0,033-0,044 W/mK 5

6 Properties Reaction to Fire Reaction to Fire Available classifications Standard spray foam has a reaction to fire classification of B2 according to the German standard or Class E according to the European standard UNE EN It is possible to obtain higher or lower levels of fire protection, such as the European C,s3,d0, the Spanish M2 or M1 classifications or the German B3. In order to select the correct foam, it is necessary to keep national regulations in mind. 6

7 Properties Water Absorption Water Absorption Long and Short Term Absorption Spray foam has a very low water absorption due to its closed-cell structure. As a result, absorption only takes place at the surface. Long-term absorption by partial immersion < 0,3 kg/m 2 Long-term absorption by total immersion < 2 % 7

8 Properties Water Tightness Water Tightness According to European Standards EN 1928 Spray Foam is watertight, and easily passes de European standard for water tightness EN 1928 at a pressure of 60 kpa (6 m column of water) EN Also, a brick façade, insulated with spray foam from the inside shows no water penetration when tested according to European standard EN 12865, which simulates rain combined with wind. The insulated façade withstands the maximum pressure of 1800 Pa, which corresponds to wind speed of approximately 200 Km/h. 8

9 Properties Vapor Permeability Vapor Permeability Moderate Permeability Closed-cell foam is impermeable to liquid water, but does posses a certain permeability to water vapor. As a result, the foam possesses excellent hydrothermal properties. m = (Depending on the density) 9

10 Advantages Fast Installation / Adhesion Fast Installation Square Meters Per Day It is possible to apply up to 600 m2 of foam per day. Other insulation materials generally do not exceed 200 m2 per day. Adhesion Most Substrates The product is self-adhesive and stays fixed to the substrate, preventing any possible detachment, common with other types of insulation. 10

11 Advantages Mobility Mobility Transport and storage of liquid components Since the product is liquid, it is easy to transport and store (It is not necessary to store the product on the construction site). + = 11

12 Advantages Shape of Substrate Shape of Substrate Adapts to Any Shape Due to the nature of the application, the foam adapts itself and reproduces the shape of the substrate. As a result, it is easy to insulate difficult areas such as columns, waved roofs, or covers for blinds. 12

13 Advantages Air Tight Air Tight Transport and storage of liquid components The continues application of spray foam, without joints, means that the product is airtight. This gives important energy savings, highly valued in countries such as USA and Canada. According to some studies, up to 40% of energy can be saved, creating an airtight wall. In Europe, the legislations are becoming more strict with regards to air tightness. To reach a passive house construction, air tightness is absolutely necessary. 13

14 Advantages Water Vapor Permeability Water Vapor Permeability Moderate Permeability The balanced vapor permeability permits: working without a vapour barrier in most cases, permitting the surface to breathe. only a small possibility of internal condensations. 14

15 Advantages Water Vapor Permeability Water Vapor Permeability Construction Example Conditions: Outside 0ºC Relative Humidity 60 % Inside 20 ºC Relative Humidity 80 % Temperature Dew Point Spray Foam Mineral Wool Without condensations With condensations 15

16 Floor Insulation Spray foam technique Conventional technique 16

17 Flat roof Gymnastics School Cetate Deva classical insulation

18 Flat roof Gymnastics School Cetate Deva

19 Roof Insulation Flat roof / Terrace 19

20 Gymnastics School Cetate Deva

21 Gymnastycs School Cetate Deva