Why should we pay attention to nanotechnology in construction?
In recent years, nanotechnology has become one of the major breakthroughs in the world of engineering and construction. If you have paid close attention, you may have seen buildings that, despite being newly built, develop cracks, damp stains, or façade discoloration in less than two years. These issues are usually the result of neglecting material quality and environmental conditions. However, there is a deeper reality behind them: the lack of use of modern technologies, particularly nanotechnology.
Today, nanotechnology allows engineers and builders to produce materials with several times greater durability, lower weight, and extremely high resistance to moisture, sunlight, and pollution. In fact, nanotechnology has come to eliminate the persistent weaknesses of buildings – from paint peeling to wall cracks and moisture penetration into facades.
Therefore, in this article, we intend to clearly and practically examine:
What exactly nanotechnology is and how it is used in construction materials;
What the differences are between traditional materials and nanomaterials;
What types of nano-coatings exist and what role each plays in increasing building durability;
How easy these coatings are to apply and under what conditions they are most effective;
And finally, why using nanotechnology is not an extra cost but rather a long-term investment.
If you are looking to build or renovate a building that will remain undamaged for years, reduce maintenance costs, and preserve its appearance, this article has been written specifically for you. In the following sections, we will step by step enter the world of nanotechnology in construction to see how this technology makes a difference in practice.
Therefore, what exactly is nanotechnology, and how has it revolutionized the construction industry?
When it comes to ‘nanotechnology,’ many people think of it as a scientific or even imaginary concept. However, this technology has been practically and effectively present in construction projects for years. Nanotechnology is no longer just a scientific term but rather a tool that has transformed the quality, durability, and efficiency of building materials.
What Does Nanotechnology Mean?
**The term ‘nano’ is derived from the unit ‘nanometer.’ One nanometer is equal to one billionth of a meter – a scale at which the structure of materials becomes so small that their physical and chemical properties change. When materials are engineered at this scale, their behavior is completely different from their normal state, and this difference forms the basis of nanotechnology.
For example:
A surface that normally absorbs moisture can become completely water-repellent with a nano-coating.
A tile that might discolor under direct sunlight can maintain its color stability when treated with a UV-resistant nano-coating.
Traditional mortar and grout can become a breeding ground for fungus and mold. However, with the addition of nano-compounds, they gain antibacterial and antifungal properties.
The Entry of Nanotechnology into the Construction Industry
The application of nanotechnology in construction initially began with the goal of increasing durability and reducing material deterioration. Today, nanoparticles are used in a wide range of products, including construction adhesives, paints, facade coatings, insulation, and even cement. These products are no longer limited to industrial countries; their domestic production has also been developed in Iran.
Why Is the Use of Nanotechnology Important?
The application of nanotechnology in building materials offers significant advantages, including:
Increased resistance to moisture, UV radiation, and environmental factors
Reduced long-term repair and maintenance costs
Increased strength and extended useful life of the building
Enhanced beauty and surface quality
For example, in parts of a building exposed to direct sunlight, the use of UV-absorbing nano-coatings (such as UV-35 coating) can prevent fading and surface degradation, thereby increasing the physical and visual durability of materials several times over.
In fact, nanotechnology has provided an opportunity to build buildings that are not only more beautiful and durable but also smarter and more environmentally friendly.
Therefore, let us now examine the real-world applications of nanotechnology in the construction industry.
Nanotechnology in Building Facades
Application:
In facades, the most important challenges include air pollution, direct sunlight, and water penetration. Therefore, nano-coatings can protect the facade surface against these factors, thereby preserving the appearance and increasing the useful life of the facade.
Practical Example:
UV-resistant and self-cleaning nano-coatings, such as UV-35 UV-absorbing nano-coating, can be applied to stone, glass, or ceramic facades to prevent discoloration, peeling, and dirt absorption.
Application Method:
1. Surface Preparation
Remove contaminants: Clean dust, dirt, grease, cement residue, or efflorescence using a suitable brush, high-pressure water, or appropriate solvents.
Repair defects: Repair and smooth large cracks, loose scales, or loose mortar. Dry any damp or moist surfaces.
Acceptance test: Apply test spots in a few areas to ensure adhesion and final appearance.
2. Materials and Tools
Nano-coating (UV-35)
Low-pressure sprayer or spray gun, brush or roller, clean cloth
Water or recommended solvent (if dilution is required per datasheet)
Ventilation equipment for enclosed spaces, ladder/scaffolding, PPE (gloves, goggles, mask)
3. Product Preparation
If the manufacturer recommends dilution, dilute with approved water/solvent. Mix gently and uniformly with a stirrer.
For industrial glass products, there may be specifications about ‘thermal post-curing.’ This step is typically performed during production (in a furnace) and is not feasible for on-site residential application.
4. Application (Step by Step)
Application temperature: Best range is 15–30°C with relative humidity below 80%.
First layer: Apply the coating with a uniform spray distance or brush – aiming for a thin, even, bubble-free layer.
Time between layers: Typically 30–120 minutes per datasheet (or until touch-dry).
Subsequent layers: Facades usually require 1–3 layers; ensure uniformity and avoid ridges in each layer.
Final curing: Under normal environmental conditions, the coating initially dries within a few hours and achieves fuller properties within 24–72 hours.
5. Quality Control
The coating should not be drippy or dirty; check for uniformity.
Water repellency test (water droplet) after 24–48 hours; the droplet should remain spherical and not be absorbed.
UV resistance test: Check the test sample after a few weeks (surface color or appearance should not change).
Safety and Maintenance
Avoid application in rainy weather, dew, or very low temperatures.
Use full PPE during application: respirator mask (when spraying), gloves, and goggles.
If specified, avoid direct sunlight during first-layer application to prevent excessively rapid drying.
Nanotechnology in Flooring and Tiles
Application:
Flooring and tiles are constantly exposed to abrasion, moisture, and stains. Therefore, the use of nanotechnology increases surface resistance, gloss, and durability.
Practical Example:
TYPE A Nano Polishing Liquid for Tiles is used for polishing porcelain tiles in factories and specialized workshops. This product makes the tile surface glossy, resistant, and scratch-resistant.
Application Method:
1. Surface Preparation
Tiles must be completely dry, free of oil, dust, and fine particles.
If necessary, perform an initial wash with water and complete drying.
2. Materials and Tools
TYPE A Nano Polishing Liquid
Industrial polishing machine with appropriate pads and pressure/speed control system
Ventilation equipment, PPE (gloves, goggles, vapor-specific mask)
3. Mixing and Machine Setup
Use the liquid directly from the container (no dilution unless permitted by the datasheet).
Adjust machine speed and contact pressure according to the manual – so that the coating spreads well without causing heat or surface burning.
4. Polishing Application (Step by Step)
Install tiles on a fixed blade or production line conveyor.
Apply the liquid via a nozzle or distribution pad to ensure uniform coverage.
Pass the polishing machine with several controlled passes until the desired gloss level is achieved.
Final surface inspection: No halos, lines, or stains; measure gloss if required (using an industrial gloss meter).
5. Quality Control and Maintenance
Perform stain resistance and scratch resistance tests according to production standards (salt spray, abrasion tests).
Storage: Keep the product at +5 to +30°C in a dry environment.
Safety note: Only a trained operator with PPE should use the machine.
Nanotechnology in Mortars, Cement, and Substructures
Application:
During the construction and substructure stage, adding nanoparticles to mortars and cement increases adhesion, reduces porosity, and prevents cracking.
Practical Example:
The use of silica nanoparticle sol as an additive in mortar and cement can strengthen the structure, increase mechanical strength, and reduce water permeability.
Application Method:
1. Base Preparation
Ensure you have the mortar/cement formula specified by the engineer or manufacturer.
Check pH and compatibility with other additives (superplasticizers, water reducers, etc.).
2. Materials and Tools
Silica nanoparticle sol (aqueous colloid)
Mechanical mixer or mortar mixer, precise measuring tools, thermometer, and hygrometer
3. Proportions and Mixing
Typical addition range: Usually 0.5% to 3% by weight of total cement (depending on sol concentration). Check the datasheet for exact dosage.
Method: First mix the sol with the mixing water to ensure uniform distribution. Then, gradually add to the cement/sand mixture. Standard and thorough mixing (at least 2–5 minutes at uniform speed) is essential for particle dispersion.
If other additives are present (shotcrete, water reducers), maintain the mixing order according to the datasheet.
4. Mortar Application
Typical uses: Grouting, thin repairs, plastering, fillers, lightweight concrete with better strength.
After application, moisture care and initial wet curing according to cement standards are required.
Safety Notes
The sol is water-based, but freezing must be prevented. Store in sealed containers.
In case of skin or eye contact, rinse thoroughly with plenty of water.
Grouting and Bathroom Applications with Antifungal/Antibacterial Properties
Application:
Grouting for bathrooms, restrooms, and kitchens
Areas exposed to moisture, fungus, and bacteria
Benefits and Reasons for Use:
Antifungal and antibacterial: Improved hygiene and reduced stains
Longer-lasting grout lines: Reduced cracking
Tangible Benefits of Nanotechnology in Everyday Life
Nanotechnology is no longer a futuristic concept or limited to advanced laboratories. Today, it is present in various aspects of our lives – from protective coatings for glass and tiles to construction paints, moisture-resistant materials, and even water purification systems. **
Notably, the benefits of nanotechnology are not only at the industrial level or in large projects; rather, they are also clearly tangible in homes, workplaces, and even public spaces. Therefore, some of the most important effects and real benefits of nanotechnology in everyday life are examined below:
Higher Surface Resistance to Sunlight and Fading
UV-resistant nano-coatings effectively prevent discoloration and surface degradation caused by sunlight. This feature is especially important in buildings with glass or stone facades, because UV rays can gradually cause dulling, flaking, and loss of material appearance.
For example, the UV-35 UV-absorbing nano-coating is an effective option in these cases. This coating filters out a large portion of the UV spectrum, thereby protecting the surface from direct sunlight and also providing self-cleaning properties. As a result, the building facade surface remains glossy and clear for a long time, and cleaning or renovation costs are reduced.
Reduced Absorption of Pollution and Dust
One common problem with exterior building surfaces is the accumulation of dust and water stains. Nanotechnology solves this problem by creating water-repellent and antistatic properties. On surfaces coated with photocatalytic nano-coatings, pollutant particles break down upon contact with sunlight, and the surface remains naturally clean.
In addition, this property is used not only in glass facades but also in floor and wall tiles, sanitary equipment, and even urban furniture, thereby preserving environmental hygiene and beauty for a long time.
Increased Durability and Strength of Building Materials
One of the most prominent applications of nanotechnology is strengthening the structure of basic building materials. The use of silica nanoparticle sol in cement, mortar, or protective coatings increases particle adhesion, reduces porosity, and enhances compressive and abrasion resistance.
In practice, this technology prevents fine cracks in concrete and significantly increases the useful life of flooring, walls, and facades. Furthermore, these nanostructures reduce water penetration into materials and prevent corrosion of rebar in concrete.
Improved Hygiene and Ease of Cleaning in Indoor Spaces
In indoor environments such as bathrooms, kitchens, or hospitals, moisture and dirt can lead to the growth of fungus and bacteria. Nanotechnology creates antibacterial properties on tile, ceramic, and glass surfaces, making it impossible for microorganisms to grow on the surface.
For example, tiles manufactured using TYPE A Nano Polishing Liquid for Tiles not only achieve exceptional gloss but also have a dense surface resistant to stains, bacteria, and scratches. This feature is especially important in high-traffic or sanitary spaces and makes cleaning faster with less use of detergents.
Economic Savings and Reduced Maintenance Costs
Although at first glance the initial cost of using nano-products may be slightly higher, in the long term they are far more economical. Reduced need for repainting, frequent cleaning, or repair of damaged surfaces results in significant savings in building maintenance costs. In addition, longer material lifespan means less construction waste and a smaller environmental impact – which is itself one of the main goals of nanotechnology development in the construction industry.
Improved Quality of Life and Environmental Comfort
Nanotechnology not only makes materials more durable but also improves the living experience in built spaces. Cooler surfaces against solar radiation, cleaner air due to photocatalytic properties, walls more resistant to moisture, and even flooring with a softer feel underfoot – all of these are tangible effects of nanotechnology in everyday spaces.
However, despite the many benefits, there are common mistakes people make when using nano-products.
Nanotechnology is undoubtedly one of the most advanced achievements in the world today in the field of construction and building maintenance. However, many users make errors when using nano-products – especially in domestic or semi-professional projects – which cause the final result to fall far short of their expectations.
Therefore, the most common mistakes in using nano-products and the correct methods for preventing them are examined below.
Buying Non-Standard Products and Expecting a ‘Miracle’
One of the biggest mistakes is trusting unbranded products or those lacking valid certifications. Some people assume that any product with the word ‘nano’ on its packaging will necessarily have extraordinary performance. However, in practice, many of these products have no real nano-based properties.
Standard nano-products have official approvals from scientific authorities (such as the Nanotechnology Development Headquarters) and their properties have been tested at both laboratory and industrial scales. Using a non-standard product not only fails to perform but can, in some cases, damage the surface or interfere with the proper function of subsequent coatings.
Solution:
Before purchasing, be sure to check the following:
Verify the nano-scale certification or product quality approval.
Read the Technical Data Sheet (TDS) and instruction manual.
Purchase from reputable and well-known manufacturers.
For example, products such as Silica Nanoparticle Sol or UV-35 Nano-Coating have nano-scale certification, and their effectiveness has been verified in real-world conditions. Using such standard products will ensure a desirable result.
Incorrect Application and Failure to Prepare the Surface
Even the best nano-product will not yield a desirable result if applied to an incompatible or contaminated surface. In many cases, users apply nano-coatings without cleaning the surface or paying attention to temperature and humidity conditions. This prevents the nanoparticles from properly adhering to the surface, and the protective or gloss-enhancing properties of the product are not activated.
Solution for Correct Application:
Thorough surface cleaning: Any dust, grease, scale, or stains must be removed before application.
Complete dryness: The surface must not be damp or moist, as water prevents coating penetration.
Proper temperature: The ideal temperature for applying most nano-coatings is between 15 and 30°C.
Uniform application: The coating must be spread evenly using a sprayer, brush, or appropriate tool so that no spots are missed.
For example, when using UV-35 coating, the glass or tile surface must be completely clean, dry, and grease-free. Then, the coating is applied uniformly by spraying or brushing. After complete drying, second and third layers are applied if needed. This application precision is the difference between an average result and a completely professional one.
Applying Nano-Coatings to Dirty or Damp Surfaces
A common mistake is applying nano-coatings to surfaces that are still damp or have contaminants such as cement dust, grease, or salt particles remaining on them. Under these conditions, the nano-layer cannot properly bond to the surface and will eventually peel or lose its effectiveness.
Solution:
Always ensure the surface is completely dry before application.
In humid environments such as bathrooms or swimming pools, allow 24 to 48 hours for the surface to dry completely after waterproofing.
For exterior surfaces, choose application times when there is no risk of rain or nighttime moisture.
Ignoring Storage Conditions and Timing
Some users, after purchasing nano-products, store them for long periods in heat, cold, or direct sunlight. These conditions can alter the nanoparticle structure and severely reduce product effectiveness.
Important Notes:
Nano-products should be stored at temperatures between 5 and 30°C in a dry, shaded environment.
After opening the package, the lid must be tightly closed to prevent evaporation or contamination.
Each product has a specific expiration date, which must be observed to maintain quality.
Finally, it must be remembered that nanotechnology is not a miracle tool but rather a precise and sensitive technology that shows its true effect only when used correctly. Proper preparation, selection of standard products, and adherence to application principles are the three main pillars of success in any nano-project.
Therefore, to avoid common mistakes, here is a guide to correctly selecting and using nano-products.
Nanotechnology is like a double-edged sword. On one hand, it can multiply the quality and durability of your building several times over. On the other hand, if the product or application method is incorrect, it will have practically no effect. Therefore, before purchasing and using any nano-product, you need to know a few key points to be sure of the final result.
What Should We Look For Before Buying?
The first and most important step in using nano-products is correct selection. Unfortunately, the market is full of products that only have a ‘nano’ label but possess no real features of nanotechnology. To avoid being deceived by advertising, pay attention to the following:
Having nano-scale certification: Reliable nano-products must have official approval from the Nanotechnology Development Headquarters. This certificate shows that the material is truly produced at the nano-scale and its effects have been scientifically proven.
Reading the Technical Data Sheet (TDS): This sheet contains details such as chemical composition, usage instructions, application temperature, drying time, and physical properties. If a product lacks this information, it is likely not standard.
Product suitability for the surface type: Each nano-coating is designed for a specific surface. For example, UV-resistant coatings are suitable for glass or tile but do not perform well on cement or wood.
Brand transparency and manufacturer background: Reputable companies publish scientific information and product test sheets on their official website. A lack of such transparency can be a warning sign.
How Can We Tell If a Product Is Truly Nano and Certified?
Many products on the market only carry the ‘nano’ name. To ensure their authenticity, there are two simple and accurate methods:
Check the official website of the Nanotechnology Development Headquarters: This headquarters has published a list of all nano-scale certified products on its website. You can search for the product or company name to verify official certification.
Read the specifications sheet and field test results: Genuine nano-products typically have testable properties. For example:
Water-repellent coatings cause water to bead up and roll off the surface without penetrating.
UV-resistant coatings have a transparent appearance and do not change the surface color.
Nano-compounds such as Silica Nanoparticle Sol in mortar or coatings increase adhesion and mechanical strength.
For example, both UV-35 Nano-Coating and Silica Nanoparticle Sol have official nano-scale certification, and their performance against sunlight, moisture, and abrasion has been fully verified in field tests.
Storage and Application Conditions in Different Climates of Iran
One common mistake when using nano-products is ignoring climatic and environmental conditions. Specific temperatures, varying humidity levels, and sunlight intensity in different regions of Iran affect product performance.
Hot and Dry Regions (e.g., Yazd, Kerman, Isfahan)
In these regions, UV-resistant and heat-resistant coatings such as UV-35 perform better. During application, the surface should be completely cool and in the shade to prevent rapid evaporation. For storage, the product should be kept in a cool place away from direct sunlight.
Humid and Coastal Regions (e.g., Northern or Southern Iran)
Water-repellent and antifungal coatings are very important and necessary for maintaining durability. Before application, the surface must be completely dry and free of moisture or efflorescence. Under these conditions, using additives such as Silica Nanoparticle Sol in mortars and paints increases adhesion and durability.
Cold and Mountainous Regions (e.g., Tabriz, Hamedan, Ardabil)
Severe temperature fluctuations can cause surface cracking. Therefore, it is better to use coatings with high flexibility and mechanical strength. Products containing silica nanoparticles, due to their stable structure, increase the resistance of concrete and mortar to repeated freezing and thawing.
Durability and Maintenance After Application
Even the best nano-coating requires periodic maintenance when exposed to harsh environmental conditions. It is recommended that every 3 to 5 years, the surface be inspected and a new layer applied if necessary. For cleaning surfaces, using neutral detergents is essential to avoid damaging the protective layer. If scratches or peeling occur, localized repair with the same product should be performed to maintain coating integrity.
Summary
Selecting a nano-product is not just buying a new material; rather, it is a technical and intelligent decision that can multiply the durability of your structure several times over. By checking certifications, reading technical data sheets, and applying correctly according to climatic conditions, you can benefit from the full potential of nanotechnology – without wasting money or time.
Final Summary
Nanotechnology is no longer a futuristic concept or something reserved for special projects. Today, it is considered an inseparable part of professional construction. However, effective utilization of nanotechnology is only possible when the selection, application, and maintenance of nano-products are carried out with care and knowledge.
Nano-coatings and additives – such as UV-resistant nano-coating, Silica Nanoparticle Sol, and industrial nano-polishes – demonstrate their true performance only when:
The product has a valid nano-scale certification;
It is selected according to the surface type and climatic conditions;
And it is applied following the technical data sheet and environmental conditions.
Neglecting these factors means that even the best nanotechnology will not make a difference. In contrast, if all steps are followed correctly, the result is completely tangible: more durable surfaces, greater resistance to moisture and sunlight, and a building that preserves its beauty and strength for years without needing renovation.
Finally, nanotechnology in the construction industry does not simply mean using very small particles. Rather, it is a symbol of precision in selection, science in execution, and a long-term vision for the quality of structures.