Q1. What is ACP?

ACP stands for Aluminium Composite Panel.

Q2. What is LDPE?

LDPE stands for Low Density Polyethylene. It is used as a core of Aluminium composite Panels.

Q3. What are the components of ACP?


Q4. What are the various thicknesses in which ACP is available?

It is available in 4mm, 3mm and 1.5mm. 5mm and 6mm are available on request.

Q5. What is the size of ACP?

The width of Aludecor ACP is 1220 mm and length can be up to 6100 mm. Customized width of 965 mm is also available on request.

Q6. What is the thickness of paint on Aludecor ACP?

The thickness of the paint varies with the type of paint used:

·     Polyester: 15-18µ (µ-micron)

·     PVDF: 25-28µ, goes up to 30-35µ when given a third coat

·     SDP: 25-28µ

Q7. From where do we source Aluminium Alloy? And who are our PVDF paint suppliers?

We source Aluminium Alloy from Hindalco, and PVDF paint from PPG, AkzoNobel, Berger Becker and Nippon

Q8. Which adhesive Film is used for bonding Aluminium with PE – Core?

Dupont Adhesive of Bynel series is used as an Adhesive Film.

Q9. What are the various tolerances of ACP?

The various dimensional tolerances of aluminium composite panels are as follows:

Width - +/- 2.0mm

Length - +/- 4.0mm

Thickness +/- 0.2mm

Bow maximum 0.5% of the length/width

Squareness maximum 5.0mm. 

Q10. What is the use of ACP in construction?

ACP as a product is used to enhance the aesthetics of a building. Its purpose is to give a well-defined, smart and a modern look.

Q1. Are aluminium composite panels Fire Resistant?

Aluminium composite panels are Fire resistant depending on the type of core material being used. Generally Mg(OH)2 is added as a non-combustible material.

Q2. What are the fire classifications in your product?

Aludecor has taken EN 13501-1 for flammability and resistance to fire, for reaction to fire on the complete system Aludecor has 2 hours ASTM E119 rating. These ratings are in comparison to BS 476, ASTM E84, NFPA, DIN 4102 etc.

Q1. What are the grades of aluminium used in manufacturing ACP?

The grades of Aluminium used in ACP are as below:

·         AA 1100/AA 3003: The alloy of this grade is a manganese alloy which has minimum tensile strength of 120 N/mm2  and to be used for buildings below 10 meters.

·         AA 3005/ AA3105: the alloy of this grade is a magnesium and manganese alloy which has a minimum tensile strength of 150 N/mm2. This is to be used for external façade solutions as magnesium decreases the chances of oxidation of aluminium and the tensile strength enables it to handle wind loads of 2.25 KPa easily.

·         AA 5005: this alloy has the magnesium content nearing to 1% which is required in coastal regions for not letting the aluminium oxidize and paint to sustain high salty moisture content. Also, it has the minimum tensile strength of 150 N/mm2 which enables it to handle windloads of 2.25 KPa.

Q2. What is tensile strength of metal and how it is expressed in units?

Tensile strength of the material is defined as strength required to resist the tensile forces acting on any material. It is expressed as Force per unit area. Tensile strength is expressed as N/mm2. When load is applied on a body, the body experiences compression and this generates an equal resisting force to regain its shape and this is known as Tension or Tensile strength.

Q3. What is flexural strength?

Flexure means bending or bending strength of material. This is again calculated using bending strength formula.

Q4. What does ASTM stand for?

ASTM stands for American Society for Testing Material.

Q1. Which types of coatings are used in coating aluminium composite panels?

There are 5 types of coatings used –

·         PVDF

·         Lumiflon

·         SDP (Super Durable Polyester)

·         HDP (High Density Polyester)

·         Polyester

Q2. Which standard is followed in coating of Aluminium Coil for ACP?

AAMA 2620/2605 is followed. AAMA stands for American Architectural Manufacturers Associations.

Q3. What standard is used for measuring coating properties?

For measuring the coating properties AAMA 2605 is used for 10 years warranty, AAMA 2604 for 5 years warranty and AAMA 2603 for interiors

Q4. What is PVDF and what are its properties?

PVDF stands for Polyvinylidene Fluoride. It is a resin added to paints to increase its UV – resistant properties. This happens due to the C-F electrovalent bond.

Q5. What are the advantages of 70% PVDF and 30% Acrylic composition?


Weather ability is a deciding factor behind paint retention that depends on the PVDF: Acrylic Ratio. The strong and protective bonding between Carbon and Fluorine (C & F) molecules makes the PVDF resin chemically and photo chemically inactive.

In the sub-tropical regions, with high humidity and UV radiation, it has been observed that almost 70% PVDF coating retains the gloss. But the gloss gets lost after 4-5 years where the PVDF level is much lower.

As per the AAMA 2605 specifications, it is necessary to meet the entire gamut of performance properties. About 70-80% PVDF in the polymer binder is a must for the topmost coating, to stand the test of time.

Q6. What is the difference between PVDF and Polyester?

·     PVDF has a better weather resistance.

·     PVDF has a higher flexibility as compared to polyester

·     PVDF paint is of higher quality

·     The durability of PVDF is higher

·     PVDF comes with 10 years warranty

Q7. Is ACP scratch proof, especially interiors?

It has a scratch resistance of up to 4H.

Q8. How does the performance of paints differ with thickness?

The performance of paint increases with increased thickness under a stipulated range set by AAMA. Two coats PVDF has a durability of 10 years and by increasing it to three coats the durability increases by 5 to 10 years.

Q9. Does weathering of paint depend on coil thickness?

No, the paint weathering has nothing to do with the sub-surface.

Q10. Why does the paint peel off from ACP?

The paint of the ACP will peel off in case of to the following reasons:

·     Improper cleaning

·     Incorrect Routing

·     Contamination of coil

·     Inappropriate cutting

Q11. Why is the life of metallic colours lesser than solid colours?

Metallic colours obtain there gloss from component called organic pigments. These pigments have polyester contents higher than in comparison to PVDF which provides the gloss however it reduces the life of the paint when used in exterior. This is the reason metallic colours have lesser life than solid colours as they lose their gloss much early than solid colours. This is in accordance to AAMA 2605 which states that in 10 years gloss remaining should be 50% of the original.

Q1. What is the density of Aluminium Composite Panels?

The density of the Aluminium Composite Panels is 1.39 gm/cc /1390 Kg/m3. This is the reason that ACP is used as a cladding material as compared to conventional materials.

Q2. What is the difference between virgin and recycled LDPE?

·     Virgin has higher elongation.

·     Recycled plastic has a higher hardness.

Q3. Does white plastic give better performance than black plastic?

It’s a usual practice of considering white as virgin plastic and black as recycled. Although plastic is translucent and can be given any colour. However, it should not be confused with the Fire rated product which has a mineral core which attains white colour naturally.

Ventilated façade Systems (VFS) are currently regarded as the most effective, safest system for installing on façades, providing the building with numerous aesthetic as well as technical advantages. Panels can now be installed independently from the substrate and from the rest, thereby avoiding the build-up of stresses and the resultant risk of breakage and detachments.

Facades using the ventilated facade systems offer superb performance against atmospheric agents. The inclusion of insulating systems in ventilated facades helps to considerably raise the level of comfort inside the building, enabling a savings in heating/air-conditioning costs (20% to 30%) as opposed to other conventional siding materials.

Q1. Is ACP considered a Green Building Material?

Yes. ACP is a Green Building material. You can send specific query for this.

Q2. How can a building get points for LEED Certification by using ACP?

The Material & Resources (MR) section in the LEED Rating Systems is to promote the use of environment friendly materials that is sourced from sustainable sources and are recycled. It also focuses on implementing proper construction waste management with storage, collection and reuse of recyclables and construction formwork and waste. MR 4.1 and MR 4.2 are considered for Aludecor ACP material for the usage of recycled material in our product.

Q1. What are the other products available apart from regular ACP?

Aludecor is the first manufacturer to produce Copper and Zinc Composite Panels in India. Both Copper and Zinc Panels have an unmatchable quality and gives exquisite looks to the building. These products also have very high durability which makes them one of the most sustainable products for façade today.

Q2. Why special series are expensive compared to others?

The Special finishes are expensive due to their design, texture, better quality paint and higher number of paint coats. Also the manufacturing process in case of special series is much more elaborate and time consuming. Thus, the cost of production goes up in case of special series. 

Q1. How frequently an ACP cladding should be cleaned?

The maintenance and cleaning frequency depends on the application environment and actual pollution conditions of the aluminium composite panel. ACP cladding on facades needs to be cleaned at least once a year. As for interior decoration, the cleaning depends on the actual pollution conditions.

The frequency of cleaning is specified below :


Building Location Frequency of Cleaning (minimum requirement)
Rural area
0.5 times / year
Urban area
Once a year
Low rainfall or coastal area
Once a year
Heavily industrialized area
2 times a year








Q2. How cleaning needs to be done?

The cleaning process generally starts from the top and slowly moves down, either manually or by suitable cleaning facilities. Specific cleaning techniques are given below:

Use clear water to wash the panel’s surface. (a) Use soft cloth with dilute detergent to wipe the panel’s surface softly. (b) Use clear water again to wash the stains off. (c) Check the panel’s surface and if there are still some spots visible then use special cleaning with mild detergent or isopropyl alcohol (5 to 10% dilution). (d) Use clear water to wash the panels’ surface till all the stains have been washed out.


Q3. What precautions must be taken while cleaning?


(i) Do not clean sun-heated surfaces (above 40 °C) to avoid rapid drying which may lead to stain formation (ii) Alkaline detergents like Potassium / Sodium Hydroxide, acid detergents, abrasive detergents, paint solution detergents or bleaches should not be used (iii) Any cleaner which includes corrosive material is forbidden (v) Organic solvents, such as MEK (Methyl Ethyl Ketone), MIBK (Methyl Iso-butyl Ketone), Triclene and paint thinner should not be used (vi) Mixing of different cleaners is not recommended

For more information on cleaning and maintenance please contact our toll free no: 1800 102 0407

Q1. What is the typical system of fixing Aluminium Composite Panels?

There are two typical systems of fixing the ACP i.e. Cassette System & Tray System. In India generally the Tray System is followed


Q2. Which silicone sealant is used to seal Aluminium Composite Panel joint?

Dow corning 789 or Dow corning 991 is used along with removable masking tape is used to seal the ACP. There are three sealants used to make the structure watertight: Weather Silicon Sealant, Non-bleeding Silicon Sealant and MS Polymer. Non-Bleeding Sealant and MS Polymer are better because there is no oil left after application on the sheet, and no dust can stick to them. In a normal weather silicon sealant dust sticks due to the oil left after application. Moreover, Non-Bleeding and MS Polymer sealants do not crack, and so the structure remains watertight for a longer period of time.

Q3. What is the effect of Wind Load on ACP?

With increase in the height of the building the wind pressure on ACP also increases. The wind pressure characteristics are governed by IS – 875 (Part – III). Generally up to 10m height wind pressure is negligible, If the structure is above 10m then proper framing arrangements as per deflection criteria is to be used and stiffeners have to be provided and 4mm ACP Panel is recommended.

Q4. Which is the size of common extrusion used for fixing ACP?

Fixing of ACP in external walls is done using tubular aluminium channels of size (38mm x 38mm x 3mm) or (50mm x 25mm x 3mm).

Q5. Why does shade variation occur in ACP?

Shade variation issues are rare and occur at times when the complete order is not placed in one lot as there may be shade variation in different lots of material purchased.

Q6. Does de-lamination depend on the coil’s thickness?

Yes, a product not designed for heights greater than 10 meters will de-laminate due to wind load.

Q7. Does the sheet crack due to lower thickness of the coil?

No, the coil will crack only in case of incorrect routing or wrong bending technique.

Q8. What are the criteria’s for application of ACP in exteriors or interiors?

When ACP is to be used in the exterior two points needs to be considered before application:

·     Wind Load: The wind load concerns become higher in cases where the height of the building is beyond 10 metres. In such conditions we should use AL 45 i.e. 4mm thick panel with 0.5 mm coil of Aluminium which will take the wind load.

·     Durability of Surface: When ACP is applied in the exterior it comes in direct contact with dust, pollution, rain, chemicals and various other particles which can lead to fading and dullness of the panels. However, this can be avoided if SDP or PVDF paint is used on the panels.

No such criteria need to be taken care off for the interiors.

**For more details go to: http://www.aludecor.com/sites/default/files/final_1.pdf

Q9. Can 3mm sheets be used for exteriors?

A 3mm sheet can be used for exteriors only up to a height of 10 metres. Beyond this height the 3mm sheet should not be used as it might wear off due to the wind load.