Perth Insulation is an essential part of any home or business, providing resistance to heat flow. Proper insulation decreases heating and cooling costs while increasing comfort.
There are three types of heat transfer that affect the effectiveness of insulation materials. Some insulation materials are rated for their thermal resistance or R-value.
Cellulose is plant fiber insulation used in wall and roof cavities to insulate, draught proof and reduce noise. It’s a very cost-effective insulation option that can increase your R-value, or the ratio of heat resistance to air resistance, and is available in both densely packed and loose fill forms. Densely packed cellulose can be used in existing walls and new construction to insulate, while loose-fill cellulose is ideal for attics because it can be easily installed in spaces without disturbing structures or finishes.
It’s often referred to as “green” insulation because it’s made up of 75-85% recycled newspaper, including post-consumer waste newsprint and is treated with nontoxic borate compounds (like boric acid or ammonium sulfate) that make it fire retardant. It’s a safe choice for homeowners, too, since it doesn’t contain any formaldehyde, which can be harmful to human health if inhaled.
When cellulose is combined with effective air sealing, it’s a powerful insulation system that stops hot and cold drafts and significantly improves your home’s energy efficiency. The combination is also ideal for older homes, as cellulose can help address common insulation challenges like knob and tube wiring, balloon framing, building cavities used for HVAC ducts, or combustion appliance air volume.
When installing cellulose, professional installers use a blowing machine to aerate the paper particles and apply them to your home’s walls or attics. This technique allows the cellulose to conform and fit in tight spaces, and is often used to retrofit old and poorly insulated homes. It can be installed in both open new walls and in closed existing walls where a drywall is removed. Blown cellulose is a safe, cost-effective and durable choice that reduces moisture movement in homes which can lead to fungal growth and water damage.
Polyurethane
Polyurethane is used in a wide variety of items that make up our daily lives. You can find it in foams (both rigid and flexible), chemical-resistant varnishes and coatings, rubber adhesives and fiberglass waterproofing systems.
Rigid polyurethane foam is one of the best insulation materials available today. Its low thermal conductivity, high strength and versatility make it a great choice for increasing energy efficiency and supporting eco-design in buildings of all types. It also protects against humidity and condensation, avoiding the formation of fungi and microorganisms that could affect both building materials and our comfort and well-being.
The production of polyurethane is carried out by reacting a diisocyanate with a polyol to produce a safe and versatile material that can take on different characteristics according to its ingredients and how it is processed. Polyurethane can be moulded to form a wide range of shapes, sizes and firmnesses depending on the ratios of the isocyanate and polyol and additives.
Its durability and flexibility mean that it is also found behind upholstery fabrics in both commercial and domestic furniture; the soles of most shoes, especially sport footwear; and heavy machinery and automobiles. It is even used to line the cups of brassieres.
Rigid polyurethane insulation reduces home energy bills and helps cut carbon emissions, so it is a popular option for homes and businesses that want to increase their energy efficiency and support eco-design. In addition, it is a good soundproofing material and can help create quieter living spaces. In fact, it can be even more effective than mineral wool for reducing noise levels in rooms where it is applied to walls and ceilings. This is due to the way it absorbs sound waves rather than merely blocking them.
Batts and Rolls
Insulation rolls are often overlooked during construction projects, but they play a significant role in your home’s energy efficiency and comfort. Whether you’re building an entirely new house or renovating your current space, insulation rolls offer a wide selection of products that fit your specific needs and budget.
Insulating batts and rolls come in a variety of thicknesses and R-values, allowing homeowners to choose the type that works best for their home. Batt insulation is available in pre-cut panels or blankets made of fiberglass, mineral wool, and cotton, and it fits tightly between wall studs and ceiling joists to create a thermal barrier and regulate indoor temperatures.
Rolled insulation comes in long rolls that can be cut to size for easy installation. This type is ideal for insulating large attic floors, as it can be quickly installed in open spaces where there are few obstructions. Like batt insulation, rolled insulation is available in different R-values and materials, including high-performance fiberglass that reduces noise and offers more protection against moisture.
Both types are highly effective at reducing energy leaks and keeping your home warmer in the winter and cooler in the summer. However, they require proper installation to prevent thermal bridging and achieve their full energy-efficiency potential.
As with other insulation types, both rolled and batt insulation options are typically made from recycled materials, which helps reduce the demand for natural resources. They’re also biodegradable and non-toxic, making them an environmentally friendly option for environmentally conscious homeowners.
Spray Foam
Spray foam insulation is sprayed in attics, walls, and basements to insulate homes. It consists of 2 types of composite material that react together, expanding to create a layer of insulation in a space. Spray foam is a good option for a home because it stops energy loss more effectively than fiberglass or cellulose and can help reduce heating and cooling costs. It also stops drafts and moisture that can lead to mold, mildew, and rot of wood.
There are a few important things to keep in mind when considering sprayed foam insulation, including the environmental impact and installation cost. This type of insulation is usually made from unsustainable petroleum-based materials. The chemicals used to create it are toxic and require proper PPE (personal protective equipment) and ventilation during and after application.
In addition, spray foam insulation has the potential to emit harmful VOCs (volatile organic compounds) when it off-gasses. This is why it’s important to use a trusted and experienced installer who has access to adequate ventilation during and after the installation process.
Closed-cell spray foam gets its name from its cellular structure. On a microscopic level, closed-cell spray foam has interlocked cells that are tightly packed together. It is less flexible than open-cell foam and can add structural support when applied to the walls of a building, pole barns, and commercial structures.
Both open and closed-cell spray foam insulation can save money by reducing air leaks that contribute to energy loss. Some experts estimate that the average home loses enough air each day to fill two blimps, leading to higher heating and cooling bills. Insulation of all types prevents heat from escaping a home during the winter and from entering in the summer, making it more energy efficient.
Fiberglass
Fiberglass is one of the most popular insulation materials used in homes today. It is a composite material made of a plastic polymer matrix reinforced by glass fibers. It is very lightweight yet strong. The thermal insulation is made from the air trapped between the glass fibers, which acts as a buffer against temperature changes.
It is usually used in attics, crawl spaces, rim joists, and in open walls. It is available in blanket form, called batts or rolled fiberglass, in various widths, lengths and R-values to suit your needs. It is also available in bags containing loose fill fiberglass that can be blown into place.
This insulation prevents conductive heat transfer through the walls and ceiling of your home, keeping you cool in the summer and warm in the winter. It is fire-retardant, posing a minimal fire risk and helps muffle sound for reduced noise levels in your home. It is also relatively inexpensive, and offers good thermal performance, making your home more energy efficient.
A concern with this type of insulation is that it can release particulates into the air, causing irritation in the lungs and eyes. It is important to ensure proper ventilation during the installation process to minimize exposure. Wearing protective gear such as gloves, a dust mask and long-sleeved shirt, is advisable.
When choosing an insulation contractor, be sure they are licensed and insured to protect you and your property. Clearly communicate your project’s requirements to avoid misunderstanding and agree on a timeframe that minimizes disruption to your home. Ask about safety protocols and their work practices to avoid mishaps and health hazards.