Spray polyurethane foam (SPF) system for thermal insulation(applied density ±35 kg/m³)

TECNOFOAM G-2035 HFO, spray polyurethane foam system (SPF) for thermal insulation is specifically formulated to apply foam with applied density around (±34~38 kg/m³). Its application must be carried out by the specific reactor equipment by mixing Tecnofoam G-2035 HFO (polyol side) and Tecnofoam G-2049.I (isocyanate side). The blowing agent is HFO gas.

It has CE marking on the basis of a statement made DoP Declaration of Performance (DoP) under the European Norm EN-14315-1:2031. 

ceFree of HFC



The spray polyurethane foam system TECNOFOAM G-2035 HFO can be used in these situations:

  • thermal insulation system in construction, industrial, farming, or agricultural facilities.
  • in applications inside ceilings, interior chambers facade, ventilated facades, partitions in general.

NOTE: For other applications/situations, please, consult our technical department

applied density 34 ~ 38 kg/m³ 
initial thermal conductivity at 23ºC 0,022 W/m·K
stirring time  3~ 5 secs
gel time  9 ~ 10 secs
tack-free time  12 ~ 14 secs
close cell content >95% (CCC4)
fire reaction Euroclass E 
mix ratio (in volume) 100/100
application method spray equipment


  • TECNOFOAM G-2035 HFO is a product with high insulating capacity, easy to apply to cover all surfaces using our spray equipment TC2049 (spray-equipment.tecnopolgroup.com) or similar.
  • the blowing agent is HCFO-1233zd(E).  it doesn't contain HCFC, HFC, according to the European rules.
  • it forms a continuous coat without joints preventing the formation of "heat bridges" and providing an optimum thermal insulation surface with high thermal insulation parameters
  • TECNOFOAM G-2035 HFO system is 100% recyclable by mechanical means friendly to the environment. It does not emit any substance to the environment once installed.
  • applied  total obtained density depends on the site ambiance and substrate conditions during the application process as well as on the spraying technique. Icreasing layer thickness, the density will decrease.
  • the properties of this polyurethane foam system allow it to adhere to any surface such as concrete, ceramic, metal, polyurethane foam, wood, acrylic paints (checking the situation of areas recommended).
  • contractors and applicators must comply with all applicable and appropriate guidelines for processing, handling guidelines.
  • It is regulated under the European standard EN 14315-1: 2013 "Thermal insulating products for applications in buildings, rigid polyurethane foam (PUR) products", for which it has CE marking based on a DoP Declaration of Performance.


Metal drums of 250 kg for the isocyanate side, and 230 kg for the polyol side


  • POLYOL COMPOUND: 3 months

Always store the drums before use at a temperature between 5 ºC and 30 ºC, always in dry areas, without the possibility of humidity entry, and without direct contact with the sun or sources of heat. Very low temperatures increase the viscosity of the polyol which makes it difficult to mix and apply, and in the isocyanate, they can generate crystallisations, which can cause its mixing ratio to vary and the consequent internal problems in the mixing and application equipment.

Very high temperatures can modify polyols, causing loss of the blowing agent, increasing consumption, and producing the swelling of the metallic drum. To avoid these last situations, it is recommended to let the drums for a while before use, in a cool and ventilated place.


In general, you should take the following factors:

  • the application of polyurethane foam system TECNOFOAM G-2035 HFO should be performed under the non-presence of moisture or water from the support stand on which to apply either at the time of application as a posteriori.
  • the substrate must be clean and free of dust, oils or greases.
  • in case of existence of expandion joints, they must be covered with a non adhesive plastic tape to avoid breaks in the SPF due to the movement of the support.
  • surface temperatures range recommended: 5ªC - 40ºC
  • in applications with high-temperature gradients, a vapor barrier is placed on the warm side of the insulation to prevent condensation
  • metal surfaces must be protected with an anticorrosive primer before being coated with the system PU foam. On smooth surfaces without pores, galvanized sheet, polypropylene, etc ..., a primer must be applied to ensure adhesion
  • it is recommended to protect the polyurethane foam usiing paints or elastomers.
  • the  minimum thickness that can be made per layer is 2 ~ 3 cm each until the desired total thickness is achieved as successive layers are applied. The maximum thickness per layer is 4-4,5 cms. For spraying the next coat, the temperature of the first coat should be approximately 40-50ºC.
  • the total applied thickness will be defined by the project specs. Applicator must respect the local regulations according to the use, taking into account the physical and chemical characteristics of the polyurethane foam system to be used


For the formation, it is necessary to mix the two initial liquid components, isocyanates and polyols with our spray equipment TC2049 (spray-equipment.tecnopolgroup.com) or similar (proper maintenance and cleaning it is recommended). The general parameters for this material will be the following:

  • Heater isocyanate temperature: 40-50 ºC
  • Heater polyol temperature:40-45ºC
  • Hose temperature:40-50ºC
  • Pressure: 1.450-1.750 psi (100 - 120 bar)
  • Mixing chamber (recommended): GU-07008-2

These temperature and pressure parameters have to be valued, ratified, or be varied by the applicator, depending on the conditions of each climate zone, weather situation, or projection equipment specifications. Is under the responsibility of the owner/applicator of the equipment to have it in perfect condition in order to keep the correct mixing ratio of the two components that Tecnopol delivers separately, through periodically updating the maintenance checks.


These safety recommendations for handling, are necessary for the implementation process as well as in the pre and post, on exposure to the loading machinery.

  • Respiratory Protection: When handling or spraying use an air-purifying respirator.
  • Skin protection: Use rubber gloves, remove immediately after contamination. Wear clean body-covering. Wash thoroughly with soap and water after work and before eating, drinking, or smoking.
  • Eye / Face: Wear safety goggles to prevent splashing and exposure to particles in the air.
  • Waste: Waste generation should be avoided or minimized.
  • Incinerate under controlled conditions in accordance with local laws and national regulations.

Contractors and applicators must comply with all applicable and appropriate guidelines for storage and safety guidelines. Anyway, consult the material and safety data sheet of the products of the system.


The TECNOFOAM system may be complemented with the following products as a means of protection or to improve its physical-mechanical properties depending on its exposure, the desired finish, or the type of substrate.

TECNOCOAT P-2049 LV: pure low viscosity polyurea. Approximate consumption 1,5 kg/m²

DESMOPOL: single component polyurethane membrane for waterproof. Approximate consumption 1,5 ~ 2 kg/m²

TECNOTOP 1C/2C: colored aliphatic  resin used to protect against UV rays, to use after DESMOPOL or TECNOCOAT membranes


characteristic POLYOL


Nº OH      DIN 53240-2

280 mgKOH/g



<600 mPa.s

180 ~250 mPa.s

NCO content     ISO 14896


31 %

Specific weight at 22ºC

1,20  g/cm³ 1,23 g/cm³

Results performed in the laboratory at 25 ºC and 50% RH, under controllable conditions. These values may vary depending on the application, climatology, or substrate conditions.




Stirring time  3 ~5 secs

Gel time

9 ~10 secs

Tack-free time

12 ~14 secs

Density free rise

28 ~32 kg/m³  

Applied density 34 ~38 kg/m³

Closed-cell content   

>95 % (CCC4)

Aged thermal conductivity value    EN-12667 (none or diffusion open method)

0,028 W/mK

GWP(Global Warming Potential) 1
ODP (Ozone Depletion Potential) 0
Fire reaction       EN-13501 Euroclass E

Results performed in the laboratory at 20ºC and 50% RH, under controllable conditions. These values may vary depending on the application, climatology, or substrate conditions. Public values shown in the Declaration of Performance issued under the European standard EN 14315-1: 2013 "Thermal insulating products for applications in buildings, rigid polyurethane foam (PUR) products".