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Insulated sandwich panels paneles aislados

How to get the most of insulation advantages | FAQ

FREQUENTLY ASKED QUESTION ABOUT INSULATED METAL PANELS

In this article, we’ll shed light on how to get the most of the insulation advantages. Therefore, here you can find a guideline to the frequently asked questing regarding insulated metal panels.

1. INSULATED METAL PANELS APPLICATIONS

EXTERNAL CLADDINGS

Insulated sandwich panels are used for single and occasionally multi-story buildings. Certainly, polyurethane is the most common core insulation for this application. Furthermore, sandwich panels that you use externally have to withstand wind-loads and also be weather-tight.

INSULATED INTERNAL ENVELOPES AND PARTITIONS

Insulated sandwich panels are used typically in food factories, cold stores, pharmaceutical industries, other temperature-controlled envelopes, and high tech clean rooms. Certainly, Expanded Polystyrene (EPS) is the most common core insulation for these applications.

FIRE RESISTING COMPARTMENT WALLS

You can use very successfully some sandwich panel systems in this application. Certainly, high-density Rock Wool mineral fiber  we commonly use for this application as it can easily provide panels with 30 minutes and up to 240 minutes fire resistance. Hence it is important to ensure that the panel system provides adequate insulation to ensure that combustible materials in direct contact with the unexposed panel side will not ignite. (In addition, that is the purpose of the insulation required in the fire resistance test).

Our roof and wall insulated panels are suitable for almost any type of construction, such as:

  1. Industrial and commercial warehouses;
  2. Agricultural buildings;
  3. Office buildings;
  4. Aviation hangars;
  5. Food factories;
  6. Modular housing;
  7. Temporary hospital units;
  8. Cold storages.

2. WHICH INSULANTS ARE USED IN INSULATED SANDWICH PANELS?

  • Polyurethane (PUR)
  • Polyisocyanurate (PIR)
  • LPCB approved Polyisocyanurate (PIR+) (certainly better quality and fire performance than the standard PIR)
  • Rock Wool (RW)
  • Glass Wool (GW)

3. WORKING TEMPERATURES OF PUR, PIR, AND ROCKWOOL INSULATED METAL PANELS

The temperature resistance properties of an insulated sandwich panel under elevated temperatures is very important in practice. Furthermore, permanent temperature hikes can lead to dimensional changes, loss of shape and strength, thermal decomposition, etc.

Therefore, in certain applications, we suggest paying attention to these working temperature limits of the insulated metal panel.

Information about this property reports the lower and upper-temperature application limit in ° C and °F. It states to what temperature a material – under continuous load – can usually be loaded without destruction or change occurring.
The duration of the action of heat plays an important role over insulating materials that permanently heat up, for example, in the roof under sunlight.
The temperature application limit makes no statement about the behavior of the material in case of fire.
 

TEMPERATURE APPLICATION LIMITS:

  • PUR and PIR sandwich panels from -40°C to 80 °C (from -40°F to 176°F);
  • Rock Wool sandwich panels from -20°C to 100 °C (from -4°F to 212°F).

Although these temperature limits may appear conservative, we prefer to use this approach as a general guideline.
We encourage you to ask us for further info on your specific case.

4. WHAT IS THE PURPOSE OF THERMAL INSULATION?

Thermal insulation reduces or prevents the temperature changes from one ambient to another. In general, materials are considered “insulants” when their thermal conductivity value is less than 0,065 W/mK.

5. WHAT IS R-VALUE?

R-Value is the rating system used to grade insulation products or a material’s insulating properties. The “R” stands for “resistance” and refers to the resistance a material has to heat flow or temperature conduction. The higher the R-value, the greater the insulating effectiveness. The R-value depends on the type of insulation, its thickness, and its density.

 

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Alberto Adriano

✓ Entrepreneur in the field of International Commerce of Industrial Thermal Insulation ✓ Sales Director at Globe Panels Ltd ✓ 12 years of experience in Sandwich Panels ✓ Exporting to Latin America since 2009.
  1. Ben left a comment on March 12, 2018 at 3:35 pm

    Hello, I am trying to understand which panel is better at insulating. PIR, PUR Por RockWool. I am constructing an oven about 100 square meters using panels. The maximum temperature inside will be 100 degrees. Please could you recommend one of your panels. Thanks!

    • admin left a comment on March 12, 2018 at 3:38 pm

      Dear Ben,
      thanks for writing.
      Actually, that working temperature is higher than the maximum allowed for PUR/PIR sandwich panels, I suggest to you to go for Rockwool panels. You might want a panel that if certified at lest EI 30, or go for an EI 120, the latter if you have also thermal insulation issues.
      In any case feel free to contact me again.
      Alberto Adriano

  2. Rockwool left a comment on April 10, 2018 at 5:17 am

    your text was very good i am a student i can use your text?

    • admin left a comment on April 17, 2018 at 7:41 am

      Hello! Yes, you can use our text with reference to our website. Thanks! Regards

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