Derived from fine glass fibers, commonly in the form of fiberglass batts, fiberglass rolls, and loose-fill, fibreglass insulation is pivotal for thermal insulation and sound reduction.

It is particularly effective for applications such as roof insulation, ceiling insulation, and ducting insulation, providing a barrier against heat flow and noise.

What is Fibreglass Insulation?

Fibreglass insulation is a type of building insulation material using fibreglass, or fine glass fibres. It is also the most ubiquitous insulation material used in US homes. Manufacturers now commonly produce fibreglass batts, rolls, and even loose-fill. While not boasting the highest R-Value, beginner homeowners can easily DIY install fibreglass wool insulation between studs and beams. 

Its created by firstly melting glass and then spinning it to create fibres. These fibres are then bound together using a resin or binder to form a dense mat (also called fibreglass batts).

What is R-Value?

R-Value is the measure of thermal resistance. The higher the R-Value, the greater the insulating effectiveness. Aside from material type, the R-Value is also affected by its thickness and density – thicker and more dense naturally increases the R-Value.

Types of Fibreglass Insulation

Fibreglass is available in various forms such as fiberglass batts, rolls, and loose-fill, each catering to different insulation needs, from roof insulation to ducting insulation

Batts and Rolls

These fiberglass insulation rolls available in varying thicknesses and widths. They are designed to fit snugly as cavity wall insulation, between wall studs, floor joists, and ceiling rafters.

Commonly, batts and rolls are either unfaced or faced with a vapour retarder made of kraft paper or foil, which helps control moisture penetration and adds to the insulation’s effectiveness. Fibreglass batts are most suitable for new construction projects where walls are still open.

Loose-fill

Also known as blown-in insulation, loose-fill fibreglass is made from small particles of spun fibreglass. It is installed using a special machine that blows the fibres into place, allowing it to conform to any space without disturbing structures or finishes.

This makes it ideal for retrofitting and re-insulating older homes where it might be difficult to install other types of insulation without major renovations. It’s particularly effective for attics and can be used in wall cavities.

Rigid Foam Boards

As the name suggests, they are insulation boards made from glass fibre. They provide high insulation values and strength, making them suitable for re-insulating flat roofs, basement walls, and where high load-bearing capacities are needed. They can be covered with a waterproof facing to prevent moisture ingress and are easy to handle and cut to size.

Spray Fiberglass

Similar to spray foam, spray fibreglass combines liquid resin and fibreglass strands into a sprayable mixture, which then hardens into a rigid insulating layer. It’s a newer form of fibreglass insulation that offers excellent coverage, filling small gaps and crevices for increased thermal efficiency.

Pros and Cons of Fibreglass Insulation

Fibreglass insulation is a commonly used material in both residential and commercial construction, known for its versatility and efficiency in improving thermal and acoustic environments. While it offers significant benefits, it’s important to consider its potential downsides to ensure it is the right fit for specific construction needs.

Pros of Fibreglass Insulation

Cost-Effective: Fibreglass is relatively inexpensive, making it a budget-friendly option for large-scale use in buildings.

Sound Reduction: Fibreglass wool is also great at dampening noise. Homeowners love installing fibreglass insulation acoustic rolls to create a calm, peaceful environment. 

Fire Resistant: Its non-flammable nature increases safety by slowing the spread of fire.

Drawbacks of Fibreglass Insulation

Moisture Sensitivity: When wet, it loses insulative properties and can promote mould growth if not properly managed.

Health Risks: Handling fibreglass can irritate the skin, eyes, and even the respiratory system, requiring protective gear during installation.

Slightly lower R-Value: While satisfactory especially for its price, fibreglass has slightly lower R-Value per inch than cellulose, cotton, and foam. 

Safety Considerations When Using Fibreglass

When working with fibreglass insulation, it’s crucial to observe safety considerations and take appropriate precautions to minimise potential risks. By following these safety considerations and precautions, you can minimise the risks associated with working with fibreglass insulation and create a safer environment for yourself and others involved in the installation process.

1. Wear Personal Protective Equipment (PPE)

Wear long sleeves, trousers, gloves, and safety goggles to protect your skin and eyes from irritation caused by fibreglass fibres. Also, consider wearing a dust mask or respirator to prevent inhalation of fibres. If skin comes into contact with fibres, wash the affected area thoroughly with soap and water.

2. Ensure Good Ventilation

Work in well-ventilated areas to minimise exposure to airborne fibres. Use fans or open windows to improve airflow and reduce the concentration of fibres in the air.

3. Practise Safe Cleanup Procedures

Clean up any spills or debris promptly to prevent fibres from spreading to other areas. Use a vacuum cleaner equipped with a HEPA filter to remove fibres from surfaces. Moreover, avoid burning fibreglass insulation, as it can release harmful chemicals into the air.

Cost of Fibreglass Insulation

While the cost of fibreglass insulation can depend on where you purchase your products from and what type you purchase, fibreglass products can go for around RM 50-55 in Malaysia per 2.5 kg.

Energy Efficiency of Fibreglass Insulation

Fibreglass insulation is known for its energy-efficient properties. Here’s how fibreglass insulation contributes to energy efficiency:

Thermal Insulation

Fibreglass insulation effectively reduces heat transfer through conduction, convection, and radiation, helping to maintain consistent indoor temperatures. By minimising heat loss in winter and heat gain in summer, fibreglass insulation reduces the need for heating and cooling, thereby lowering energy consumption and utility bills.

High R-Value

Fibreglass insulation typically has a high R-value, which measures its thermal resistance. A higher R-value indicates greater insulating effectiveness, allowing fibreglass insulation to provide superior thermal performance compared to other insulation materials.

Air Sealing

Properly installed fibreglass insulation helps create a continuous thermal barrier, minimising air leakage and drafts that can compromise energy efficiency. This improves the overall effectiveness of the building envelope and reduces the workload on heating, ventilation, and air conditioning (HVAC) systems.

Energy Savings

By improving thermal comfort and reducing the spread of heat, fibreglass insulation can lead to significant energy savings over the lifespan of a building. Studies have shown that well-insulated buildings with fibreglass insulation can achieve substantial reductions in energy consumption and greenhouse gas emissions.

Longevity

Fibreglass insulation is durable and long-lasting when properly installed and maintained. Its longevity ensures sustained energy efficiency benefits over time, providing consistent thermal performance for the lifespan of the building.

Recyclable Materials

Fibreglass insulation is made from abundant and recyclable materials, making it an environmentally friendly choice. Its energy-efficient properties contribute to lower carbon emissions and help mitigate the environmental impact of building operations.

Overall, fibreglass insulation is highly energy-efficient, offering excellent thermal performance, durability, and environmental sustainability. Its widespread use in residential, commercial, and industrial buildings demonstrates its effectiveness in improving energy efficiency and reducing energy costs.

Fibreglass Insulation Supplier Malaysia

In conclusion, fibreglass insulation is a solid choice for construction and renovation projects for maximum comfort and efficiency. The thermal resistance, energy conservativeness, and ease of use make it a prime element for all, and its affordable prices make it all the more accessible to the masses.

If you are considering using fibreglass insulation in your house, providers such as Unitrade can offer the highest quality products for your needs, as well as a comprehensive explanation for your specific needs. Start your building journey today with Unitrade, and get a free consultation that can ensure the most efficient and durable products for any of your projects.

FAQ

What is fibreglass insulation good for?

Fibreglass insulation is ideal for reducing energy costs and improving thermal efficiency in homes and buildings. It effectively minimizes heat transfer, enhancing indoor comfort and environmental sustainability.

How long does fibreglass insulation last?

Fibreglass insulation can last over 50 years if properly installed and maintained. Its longevity is dependent on conditions such as moisture exposure and physical disturbances.

Does fibreglass insulation reduce noise?

Yes, fibreglass insulation does reduce noise. Its dense fibrous structure is effective at absorbing sound, which helps to decrease noise transmission between rooms and from outside sources.

Can I sleep in a room with fibreglass insulation?

Yes, you can sleep in a room with fibreglass insulation, provided it is correctly installed behind walls and sealed. Proper installation ensures fibers are contained and do not pose a risk to indoor air quality.