PUF Panel


  • External Face in Steel:
    0.5 mm
  • Internal Face in Steel
    0.4 mm
  • Insulation Used:
  • Cobalt Napthanate
  • Methyl Ethyl Ketone Peroxide
  • For cleaning and surface preparation
  • Description
  • Applications
  • Advantages

Pre-fabricated Composite Panels or Insulated Panels for Roofing & Cladding are Sandwich Panels manufactured with profiled Color Coated Metal – Zinc Coated / Galvalume Coated Steel Sheets or FRP / GRP Profiled Sheets duly Sandwiched with PUF (Polyurethane Foam) as the insulation material.

The Panels are available in various colors and total thickness of panel range from 30 mm to 100 mm. The PUF Panels are ready-to-install and self supporting with high overall stiffness.

  • Industrial Building & Sheds – Automobile, chemical, steel, cement, power plants, pharamaceutical, commercial building, godown, etc.
  • Telecom Shelters
  • Cold Storage & rooms
  • Pre-fabricated Shelters / Defense Shelters
S.No. Particulars Color Coated Galvanized/ Galvalume Sheet Chemical Resistance FRP Sheet
1. CORROSION/WEATHER RESISTANCE Color Coated Galvanized / Galvalume Sheets have weaker corrosion resistance, when used for Roofing/Cladding in Industrial where the environment is Acidic / Alkaline, Salt Water, because the base metal is mild steel with 120-150 micron coating of Zinc/Alu-Zinc. Whereas FRP Sheets are used for Factories or Industries which has corrosive/acidic environment, have special corrosion/weather resistance gelcoat coating (400-500 microns), made in Isopthalic, Vinyl Ester, Bisphenol and other various types of unsaturated Polyester Resin are excellent in resistant to extremely corrosive environment.
It can handle direct exposure to acids, salt water, oil and many other common corrosives.
2. Lifespan Due to corrosion/weathering effects on Color Coated Metal Sheet, their life span is 3-5 years only. Fiberglass Sheets does not have corrosion/weathering effect and therefore has a much longer duty life than steel. Approximately 10-15 Years.
3. Long Lasting Aesthetics Color Coated Sheets can stand only for the period of 5 years and after this period due to corrosion/weathering effect, it looks faded. FRP Sheets have long lasting aesthetics and it stands like new sheets for a period of minimum 10 Year because of in built color and U/V resistance properties.
4. Creates Thermal Comfort Since the base material is mild steel and it gets expansion and contractions easily in summer and winters. Since FRP is a reinforced plastic, it has very low expansion and contraction in summer & winters. Also, it is a good insulator with low thermal conductivity.
5. Insulation Properties Being the metal sheets, they got heat up very quickly in summers and transmit heat into the sheds which creates discomfort to the working environment. FRP does not conduct heat. FRP Sheets maintain a constant temperature and are always cool to touch. It is a reinforced plastic product, in which one of the major raw material is glass fiber which is used in making insulation slabs so it has a better insulation properties than metal sheets.
6. Strength & Stiffness It is common myth that steel has more strength and stiffness than FRP but due to weathering effects all its strength & stiffness become weak in due course of time. Fiberglass Sheets are reinforced plastic product which has equal or better in strength/stiffness than steel. Also because of its high mechanical properties, it does not loose strength due to weathering effects.
7. Modulus of Elasticity Modulus of elasticity : 29 x 106 psi Will not permanently deform under working load. Module of elasticity : 2.8 x 106 psi
8. Maintenance Free Since Metal Sheets easily got corrosion & weathering effects, they need to be maintained regularly and have a maintenance cost FRP Sheets does not have weathering/corrosion effect so they are maintenance free.
9. Electrical Conductivity Metal likes steel and aluminium conduct electricity and must be grounded.C Whereas FRP Sheets are non-conductive and has high dielectric capability.
10. Cost Lower initial material cost but more expensive to maintain and much higher cost to life ratio. FRP Sheet initial material cost is expensive than steel but due to less maintenance and longer product life allow for a lower lifecycle cost. Corrosion is an area where FRP cost can also be justified, as it’s the greatest advantage over steel.
11. Weight Metal Sheets are much heavier than FRP. It required heavy steel structure which ultimately increases the cost. FRP Sheets weight is 75% less than steel. So it does not require that heavy steel structure and overall project cost can be reduced. This also makes the material much easier to lift for installation or repairs, leading to lower maintenance.
S.No. Description Plycarbonate Sheet
1. Density 40 ± 2 Kgs m3
2. Compressive Strength at 10% deformation 2.1 Kgs/cm3
3. Tensile Strength 4.0 Kgs/cm2
4. Bending Strength 4.2 Kgs/cm3
5. Adhesion Strength (Foam to Steel) 3.0 Kgs/cm2

Dimensional Stability (48 hours)

+38°C & 90% RH


7. Closed Cell Content 90-95%
8. Temperature Range -180°C to +140°C
9. Temperature Conductivity at 0°C
(design value 0.020 k Cal/m-hr/°C or 0.023 w / m k
0.018k Cal/m-hm/°C
10. Water Absorption 0.2% volume at 100% RH
11. Vapour Permeability (At 90% RH & 38°C) 0.8/0.12 GMS/HR m2 as per
IS 11239
12. Fire property extent to burn as per BS 4735 Max. 100 mm
13. Type Self extinguishing

Superb Thermal Efficiency & Rigidity

Ready-to-Install and Self Supporting

Weather & Corrosion Resistant

Very Light Weight to High Strength Ratio

Ease of Handling & Installation

Withstand Against Storm, Heavy Rainfall, Wind

Fire Retardant and Self Extinguishing

Low Maintenance

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