VEKA Polska Sp. z o.o., one of the largest manufacturers of PVC window-profile systems in Europe, officially endorses Mobilne Laboratorium Techniki Budowlanej Sp. z o.o. as a reliable, innovative, and trustworthy partner in the supply of professional testing stations for windows and doors.
The recommendation was issued after the delivery and commissioning of the modern test chamber WINDOORTESTER 3050, which enables testing in accordance with European EN standards and American ASTM standards. The device was handed over with full equipment — a test wall and a complete set of control and measurement apparatus — allowing the execution of tests at the level of international quality standards.
More about this project can be found in the VEKA Poland publication.
“We particularly value the professionalism and timeliness of the MLTB team. At every stage of the cooperation we received complete and reliable information about the progress of the work, and the commissioning of the device was supported by comprehensive training for our employees. This is the only offer in the country that combines the delivery of a professional testing station with practical preparation of the staff for its operation and for applying test procedures compliant with both European and American standards,” reads the recommendation signed by Paweł Ciepły, Managing Director & CEO of VEKA Polska.

The company also emphasizes that cooperation with MLTB did not end at the commissioning stage. The recommendation includes information about fast and competent technical support provided after the implementation of the station, which confirms the partnership-based nature of the relationship.
“With full conviction, we recommend Mobilne Laboratorium Techniki Budowlanej Sp. z o.o. as a reliable, innovative, and trustworthy partner in the supply of specialized laboratory equipment,” VEKA Poland concludes.
About MLTB
Mobilne Laboratorium Techniki Budowlanej Sp. z o.o. is a leading Polish company specializing in the testing of building joinery, the supply of professional testing stations, and the training of personnel in testing methods compliant with EN, ASTM, NAFS, and NFRC standards. The company carries out projects for both manufacturers and laboratories in Poland and abroad.
Scope of tests performed on the WINDOORTESTER 3050 station: air permeability, watertightness, resistance to wind load, and measurement of operating forces.
VEKA Poland — The WINDOORTESTER 3050 test chamber at MLTB enables the testing of windows and doors with dimensions up to 3100.

Laboratory

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NFRC Certificate

NFRC – Success for our laboratory!

Certification opens up new opportunities for window manufacturers
NFRC (National Fenestration Rating Council) certification is a key requirement for joinery manufacturers wishing to sell their windows and doors in the USA.

The NFRC defines energy efficiency standards and meeting these standards is necessary to bring products to the US market. Working with a laboratory that is NFRC certified allows Polish manufacturers to be certified faster and more efficiently, increasing their competitiveness. https://nfrccommunity.org/page/SL

This certification means that the laboratory is authorised to carry out thermal simulations for windows, doors and glazing in accordance with NFRC standards. This is important for joinery manufacturers who want to obtain certified thermal insulation values for their products.NFRC – New Opportunities for Polish Manufacturers – Energy Certification for Windows and Doors

The importance of energy certification

Evaluating the thermal performance of joinery can determine how well a product insulates heat and reduces energy loss. In the United States, and especially in states such as California and New York, products without adequate performance may not be approved for sale.

As part of the assessment, the following are analysed, among others:

– the thermal transmittance factor (U-Factor), which determines thermal insulation,
– solar heat gain coefficient (SHGC), which controls the temperature inside a building,
– visible light transmittance (VT), which determines the amount of natural light in a room.

Having reliable and internationally compliant calculations allows companies to compete effectively in the US market and adapt their products to the applicable requirements.

Benefits for manufacturers resulting from cooperation with an experienced laboratory

Faster and cheaper evaluation process

The laboratory is staffed by a calculation specialist with official certification, which means that all tests are carried out in accordance with the requirements. As a result, manufacturers do not need to engage additional verification bodies, which speeds up and simplifies the whole process. Reducing the number of intermediaries also translates into lower certification costs.

This document confirms that calculation specialist Marek Bożydaj meets the requirements of NFRC 716 within the Certified Simulator Program. This means that she is qualified to use simulation tools such as Berkeley Lab WINDOW, THERM and Optics to assess window and glazing performance. The holder of this certification has earned the title of NFRC Certified Simulator, which means that he or she can carry out simulations related to the assessment of the thermal performance of windows, doors and facades.

Precise optimisation of technical parameters

Advanced calculations make it possible to analyse and improve the thermal insulation properties of windows and doors. Manufacturers can optimise U-Factor and SHGC, making their offerings more attractive. The ability to make changes to the design even before testing minimises the risk of revisions and reduces the cost of potential product modifications.

Improved market position and sales opportunities

Obtaining the required certification allows manufacturers easier access to the US market. Products that comply with international standards are better perceived by distributors and investors. In addition, meeting the relevant criteria allows for additional quality labels, which strengthens the brand’s position among foreign customers.

Summary

By cooperating with a laboratory with an officially authorised calculation specialist, Polish joinery manufacturers can meet the requirements of the international market faster and more efficiently. This is the key to increasing competitiveness, gaining new customers and expanding sales in the USA.

Working with a competent laboratory ensures that the entire certification process runs smoothly and that products meet the highest quality standards required for the US market.

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The National Fenestration Rating Council (NFRC) is an independent, non-profit organization based in the United States that establishes objective energy performance ratings for windows, doors, and skylights. Its mission is to provide consumers with reliable information, allowing them to compare products and make informed purchasing decisions.

History and Mission of NFRC

NFRC was founded in 1989 by a group of professionals from the window and door industry in response to the growing need for standardized energy performance ratings for these products. Before NFRC’s establishment, manufacturers used different assessment methods, often leading to misleading information for consumers. NFRC’s mission is to promote continuous improvement in windows, doors, and skylights, contributing to increased comfort and energy efficiency in buildings.

NFRC Energy Performance Label

One of the key tools provided by NFRC is the energy performance label, which offers detailed information about the energy efficiency of products. This label includes several key parameters:

• U-Factor: Measures how well a product prevents heat from escaping a room. A lower value indicates better thermal insulation.
• Solar Heat Gain Coefficient (SHGC): Measures the product’s ability to block unwanted solar heat gain. A lower value indicates less solar heat penetration, which is beneficial in warm climates.
• Visible Transmittance (VT): Determines the amount of natural light passing through the product. A higher value means more daylight in the room.
• Air Leakage: Measures the amount of air that passes through the product. A lower value means fewer drafts and better airtightness.
• Condensation Rating: Indicates the product’s resistance to condensation formation (optional).

Difference Between NFRC and ENERGY STAR

While the ENERGY STAR label indicates that a product is energy-efficient, the NFRC label provides detailed ratings in various categories of energy performance, allowing consumers to compare different energy-efficient products.

Importance of NFRC Certification

Products certified by NFRC are independently tested and verified, ensuring consumers of their actual energy performance. Thanks to standardized NFRC ratings, architects, builders, and homeowners can make informed choices that contribute to increased comfort and energy efficiency in buildings.

Conclusion

For those planning to replace windows, doors, or skylights, understanding the NFRC label and its parameters is crucial for selecting products that are best suited to individual needs and climate conditions.

Questions Answered by This Article

1. What is the National Fenestration Rating Council (NFRC)?
2. Why was the NFRC founded, and what is its mission?
3. How does the NFRC energy performance label help consumers compare products?
4. What are the key parameters included on the NFRC energy performance label?
5. What is the difference between the NFRC label and the ENERGY STAR label?
6. Why is NFRC certification important for windows, doors, and skylights?
7. How does NFRC certification benefit architects, builders, and homeowners?
8. What are the advantages of standardized energy performance ratings?

What is the National Fenestration Rating Council (NFRC)?

The NFRC is an independent, non-profit organization that provides objective energy performance ratings for windows, doors, and skylights.

Why was the NFRC founded, and what is its mission?

NFRC was established to standardize energy performance ratings and provide consumers with reliable information for comparing products.

How does the NFRC energy performance label help consumers compare products?

NFRC labels provide detailed ratings on U-Factor, SHGC, Visible Transmittance, and Air Leakage, enabling consumers to make informed decisions.

What are the key parameters included on the NFRC energy performance label?

The key parameters include U-Factor, Solar Heat Gain Coefficient (SHGC), Visible Transmittance (VT), Air Leakage, and Condensation Rating (optional).

What is the difference between the NFRC label and the ENERGY STAR label?

While ENERGY STAR signifies energy efficiency, NFRC labels provide detailed performance metrics for comparison between products.

Why is NFRC certification important for windows, doors, and skylights?

NFRC certification ensures independent testing and verification of energy performance, enhancing consumer trust and informed decision-making.

How does NFRC certification benefit architects, builders, and homeowners?

It provides standardized ratings that assist in selecting energy-efficient products, contributing to greater comfort and energy savings.

What are the advantages of standardized energy performance ratings?

Standardized ratings ensure transparency and comparability, helping consumers, architects, and builders make better purchasing decisions.

https::https://windowtesting.eu/nfrc-certification/

https://windowtesting.eu/nfrc-simulator/

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Presentation at Selena Group stand
We are present at the Selena Group stand (BAU 2025 Hall B6, No. 221), where we are testing the latest technology for assembling joinery – the Tytan WINS system. Innovative solutions are changing the face of the construction industry, and the Mobile Laboratory stands out as a company that bases its operations on a solid foundation of innovation and reliability.

Selena Group – Global leader
Selena Group is a global leader in the production and distribution of construction chemicals and one of the four largest manufacturers of installation foam. At our stand, visitors will have the opportunity to see how Tytan WINS performs under demanding load conditions.

Innovative tests in practice
One of the key points of the presentation is pressure chamber testing – one of the most widely used methods for assessing the strength of structures. Testing the air permeability of windows, doors, facades and their installation is fundamental to ensuring energy efficiency, user comfort and the durability of buildings.

State-of-the-art testing and measuring equipment
In the course of testing, we use advanced test and measurement equipment of our own design, which is adapted to the precise measurement of negative and positive pressures. This makes it possible to simulate extreme weather conditions, such as strong winds or heavy rain, so that accurate and reliable results can be obtained.

BAU 2025 Innovative tests in practice

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We are happy to invite you to the BU 2025 Trade Fair in Munich, which will be held from January 13-18, 2025. The Mobile Construction Technology Laboratory will be present at the Selena Group booth, where we will conduct detailed tests of the innovative Titan WINS woodwork assembly system.

What will we do ?

Of course in testing !!! Participants will be able to see how Tytan WINS copes with rain, wind pressure up to 600 Pa and other demanding loads.

Waterproofing using a pressure chamber is one of the most widely used test methods for evaluating the strength of structures. Of course, facades, windows and doors are also tested in this way for weathering. Because this procedure simulates extreme weather conditions, such as high winds or heavy rain, by creating differential pressure.

https://badaniaokien.pl/ekpertyzy-budowlane/wodoszczelnosc-okien-drzwi-fasad-montazu/

We encourage you to visit our booth and participate in interactive presentations. This is a great opportunity to get a quick overview of modern construction technologies. Which support sustainable development and energy-efficient construction.

What is this trade fair ?

BAU trade fair is one of the most important events in the construction industry in the world, every two years in Munich. They gather exhibitors and visitors from all over the world. A space to present innovative materials, systems and technologies for residential, industrial and commercial construction.

During the introduction are innovations in architecture, construction and interior design. The trade show features software components ranging from access to building data to advanced intelligent systems. As noted, the event is also a platform for knowledge exchange and business connection. Therefore, it provides value individually for ordinary as well as those interested in revealing trends in construction.

In recent editions, more than 2,000 exhibitors from around the world have presented their products. The event enjoys the opportunity to access locations where technological innovation meets practical solutions for today’s construction industry

Join us to discover how innovative solutions can shape the future of construction. See how to contribute to greener and more efficient construction practices.

https://bau-muenchen.com/en

You are cordially invited to the meeting!

With regards,.
The team of the Mobile Construction Technology Laboratory

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RED:The impetus for this conversation is your delivery of the WIDOORTESTER window test bed for the GIT institute in Bosnia and Herzegovina.

Mr. Adam, the Mobile Building Technology Laboratory has been in operation for almost 20 years. What is the main field of activity of the laboratory?

Our laboratory specializes in testing windows and exterior doors. We are accredited in all testing methods including sound insulation testing, using our own testing chambers. These are necessary tests for CE marking of the product in the 3 assessment system. We also perform tests for burglary resistance, operating forces and mechanical strength for windows. Many years of experience allow us to offer the highest quality services, in line with manufacturers’ needs and market expectations.

We also fulfill orders for WIDOORTESTER test stands for window and door manufacturers. In Bosnia and Herzegovina this is our third realization, and there are many more in Poland.

WIDOORTESTER window test stand for the GIT institute in Bosnia and Herzegovina

RED: It’s not easy to properly test a window or door yourself and determine its grades – do you also offer training?

Yes, we organize training courses in Polish and English for test stand operators. Thanks to them, users gain knowledge of the equipment and testing methods, which translates into more efficient work. Our training helps them understand the full potential of the available tools, which in turn allows them to optimize their research processes.

RED : Mobile laboratory is associated by many with field services, I know there is a laboratory based in Walbrzych what kind of research do you do there ?

As I mentioned at the beginning of our conversation, we perform all testing methods to evaluate the properties needed by the manufacturer to mark the product with the CE mark. We have 5×4 and 3×3 test stands, which gives us the ability to test two samples at the same time.

In addition, we perform tests of burglar resistance and acoustic insulation in our own reverberation chamber. I invite you to watch the video “Acoustic Insulation Testing Laboratory – Technique and Acoustics” filmed by ProperSound

RED: Reliability and independence of testing are very important in this industry. How do you ensure these values in practice?

The key is the objectivity and quality of our research. Customers can rest assured that our work is reliable and in line with current standards. We are constantly working to improve so that our research is not only accurate, but also conducted with due diligence. This also applies to the documentation of results that the manufacturer receives after testing.

RED: The Mobile Laboratory is recognized in the Keystone window certification program.

What does this mean?

First of all, it’s a huge convenience, for manufacturers who want to export windows to the US. We are the only unit in Poland recognized in this program, and there is another significant one in Europe. It is worth noting the scope of testing and competence.

The Keystone window certification program (Keystone Window Certification Program ) requires that tests be conducted by independent laboratories that meet certain quality requirements. All laboratories that wish to test under the Keystone Certification Program must apply for accreditation, and their processes and quality management systems are thoroughly evaluated by an accredited body.

RED: There are tornadoes raging across the US and Kandy, in order to compete will Polish manufacturers want to do hurricane tests or do you intend to offer them as well?

Yes actually, we have such plans. We will let you know when we can provide more details. Thank you for the interview.

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How to protect windows from hurricanes?

Climate change, the increase in extreme weather events and the growing threat of hurricanes require building owners to use appropriate security measures. In Europe, where hurricane phenomena are becoming more common, it is essential to develop effective strategies to protect property, including windows and doors. This article presents five key tips for securing windows and doors in the European context.

Choosing impact-resistant windows and doors

Impact-resistant windows and doors are the cornerstone of protecting buildings during hurricanes. The primary protection can be laminated glass, which, combined with sturdy frames, can withstand the impact of strong winds and the objects they carry. In the European context, where building standards vary from country to country, it is important to choose products that meet the highest safety standards, such as EN 356 (safety glazing, burglary resistance) and EN 1627 (windows and doors, burglary resistance). Windows and doors of this type can significantly reduce the risk of damage, also minimizing secondary effects such as indoor flooding.

Installation of external anti-burglary roller shutters

Burglar-proof roller shutters can provide an additional barrier to windows and doors in buildings. In Europe, where historic architecture often does not allow the installation of modern security features, shutters can be an aesthetically pleasing and effective solution. In particular, shutters made of corrosion-resistant materials, such as aluminum, are recommended for their durability and longevity. Installing shutters with an automatic closing mechanism allows you to quickly and easily protect your building from an oncoming storm.

Application of hurricane film

Hurricane film is another solution that can significantly improve the safety of windows in buildings. The film is applied to the surface of the glass and strengthens it, reducing the risk of it breaking into pieces in the event of an impact. The use of the film is particularly recommended in buildings where, for various reasons, it is not possible to replace the windows or the glass itself with those with higher resistance.

Protecting glass doors

Glass doors, often present in modern buildings, require special attention in the context of protection against hurricanes. It is worth considering the installation of special locking and security systems that will make it difficult for strong winds to break down or destroy the door. For doors with large glazed surfaces, additional use of plywood or hurricane shutters may be necessary. In Europe, especially in regions prone to high winds, there are many companies that specialize in this type of service, offering dedicated solutions tailored to local specifics.

Regular technical inspections and maintenance

There is no effective protection without regular technical inspections and maintenance. In the European context, where building codes may require frequent inspections, it is important to regularly check the condition of windows and doors for damage or wear on materials. Professional glazing services that offer inspections and maintenance can provide building owners with peace of mind, knowing that their properties are prepared for potential hazards.

Summary

Protecting commercial buildings from the effects of hurricanes requires appropriate technology and regular maintenance. In the European context, the diversity of climatic and architectural conditions requires a customized approach for each building. By using impact-resistant windows and doors, protective blinds, hurricane films and regular maintenance, commercial building owners can significantly reduce the risk of damage during hurricane season.

Useful standards

PN-EN 356:2000 – Glass in construction — Protective glazing — Testing and classification of resistance to manual attack.

PN-EN 12600:2004 – Glass in building — Pendulum test — Impact test method and classification of flat glass.

EN 1627:2021-11 – Doors, windows, curtain walls, grilles and blinds — Burglar resistance — Requirements and classification.

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A guide to processes, technologies and innovations

Choosing the right windows and doors is a key part of building or upgrading a home, affecting comfort, safety and energy efficiency. In this article, we provide a detailed overview of window and door testing processes, the latest technologies and innovative solutions available on the market.

1. window thermal insulation tests – are windows energy efficient?

Thermal insulation of windows is one of the most important aspects affecting the thermal comfort of a building and energy bills. These tests measure the amount of heat penetrating the window, which allows you to assess its energy efficiency. The lower the heat transfer coefficient (U), the better the window insulates the interior from external weather conditions. High-quality, energy-efficient windows can significantly reduce heat loss in winter and reduce overheating in summer, which helps reduce energy consumption.

2. How are windows and doors tested in different weather conditions?

To guarantee the durability and performance of windows and doors, tests are conducted to simulate different weather conditions in special test chambers. In these simulations, windows and doors are subjected to extreme conditions such as high winds, rain, freezing temperatures and even intense heat. Such tests help to see how products perform in the most demanding situations and whether they can withstand prolonged use in changing climatic conditions.

3 What are the best materials for windows and doors?

Three materials are most commonly used to manufacture windows and doors: aluminum, PVC and wood. Each of these materials has its own unique properties:

– Aluminum – is characterized by high durability and resistance to corrosion. It is also lightweight, making it possible to create slender frames with large glazing.

– PVC – a popular material due to its good thermal insulation and soundproofing. It is easy to maintain and weatherproof.

– Wood – a natural material that provides excellent thermal insulation. It gives an elegant appearance, although it requires regular maintenance.

4.How is the soundproofing of windows and doors checked?

Sound insulation is a key factor, especially for apartments and houses located in noisy urban areas. Soundproofing tests are carried out in special acoustic chambers, where the level of noise penetrating through windows and doors is measured. This helps determine how effectively the products protect the interior from outside noise. Good quality soundproof windows can significantly improve the acoustic comfort of residents by isolating the sounds of traffic or other noise sources.

5. What mechanical tests are conducted on windows and doors?

To ensure the safety and durability of products, windows and doors are subjected to various mechanical tests. These tests include bending tests, impact tests and checking the operation of basic functions such as opening and closing. The products must withstand prolonged use and various extreme conditions, thus assessing their strength and reliability.

6. How are windows and doors tested for burglary protection?

Security is a top priority for windows and doors. These products must be equipped with effective security features that prevent break-ins. Burglary tests involve simulating break-in attempts using specialized tools and techniques. Through such tests, it is possible to assess whether windows and doors are sufficiently resistant to burglary attempts and whether they meet security requirements.

7. Key features of windows and doors – what to look for?

When choosing windows and doors, the key features to pay attention to are:

– Thermal permeability – determines the energy efficiency of the building.

– Sound insulation – ensures acoustic comfort in the rooms.

– Mechanical strength – ensures durability and safety.

– Weather resistance – checks how products handle extreme weather conditions.

– Burglary protection – protects against attempted break-ins.

8. Modern technologies in windows and doors

Modern windows and doors use advanced technologies that enhance their functionality and convenience. Among the latest solutions are:

– Intelligent glazing with variable transparency – allows you to adjust light transmittance according to your needs.

– Frames made of composite materials – are characterized by high strength and excellent insulation.

– Electronic control systems – make it possible to open and close windows remotely and monitor their status.

9. Differences in window and door testing between the EU and the US

Window and door testing standards vary from region to region. In Europe and the U.S., standards for thermal insulation, safety and weather resistance may differ slightly. In Europe, there is a strong emphasis on energy efficiency and protection against heat loss, with more stringent building efficiency regulations.

10. Innovations in window testing – what’s new on the market?

Today’s window research includes increasingly advanced technologies, such as:

– Windows with solar panels – which can generate electricity.

– Glazing that changes color when exposed to light – to help control the level of sunlight indoors.

– Frames made of modern materials – providing better thermal and acoustic insulation.

Summary

Choosing windows and doors is an investment for many years, so it is worth paying attention to all key aspects, such as thermal insulation, soundproofing, mechanical strength and security. Regular tests and modern technologies make it possible to create products that not only meet the highest standards, but also offer comfort and safety at the highest level. It's worth choosing products that undergo rigorous testing and use the latest innovations to ensure peace of mind and comfort every day.

Quality Policy

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Laboratory Requirements for Keystone Program Testing:

1. Accreditation – Laboratories must hold ISO/IEC 17025 accreditation, indicating full accreditation by an accredited accreditation body and compliance with international quality management standards.
2. Experience – Laboratories must have relevant experience in testing windows and other window-related products.
3. Equipment – Laboratories must possess appropriate laboratory equipment.
4. Personnel – Laboratories must employ suitably qualified personnel whose qualifications and competencies are confirmed by certificates and certifications.
5. Independence – Laboratories must be fully independent, with no conflict of interest between the laboratory and the manufacturer whose product is being tested.

All laboratories wishing to conduct tests under the Keystone certification program must apply for accreditation, with their processes and quality management systems subject to detailed evaluation by an accredited entity. After accreditation, laboratories must undergo regular audits to ensure ongoing compliance with Keystone program requirements.

What is the Keystone Window Certification Program? The Keystone Window Certification Program is an initiative aimed at ensuring that windows are designed, tested, and manufactured in accordance with requirements and quality standards. The certification program is accredited by both the American National Standards Institute (ANSI) and the Standards Council of Canada (SCC), covering other window industry products such as exterior doors, facade systems, and roof windows.

Products receiving the Keystone certification must undergo a series of tests and meet requirements for various parameters such as thermal insulation, air tightness, wind and rain resistance, and load-bearing capacity. All tests are conducted by independent laboratories, and the results are subjected to detailed analysis to ensure compliance.

Keystone certification can only be awarded to manufacturers who commit to complying with all certification program requirements and regularly subject their products to testing and audits. Ultimately, the certification serves as a quality guarantee for customers, assuring them that by purchasing windows with Keystone certification, they are receiving products that meet the highest quality standards.

The independence of the laboratory is particularly important as it helps avoid conflicts of interest that could influence test results and product evaluations. To obtain Keystone certification, manufacturers must provide the certification program with test results conducted by independent laboratories confirming that their products meet specified quality requirements.

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