What is Loft Insulation?
Loft insulation is a method of enhancing a home’s energy efficiency by insulating the loft or attic space, ultimately reducing heat loss and lowering heating costs. By minimizing the amount of heat escaping through the roof, loft insulation helps maintain a comfortable indoor temperature throughout the year, keeping your home warm in the winter months and cool during the summer.
There are several types of loft insulation materials available, each with its own advantages and applications. Two popular options include fiberglass insulation and rigid insulation boards.
Fiberglass insulation:
Fiberglass insulation also known as mineral wool or glass wool, is made from fine strands of glass fibres. It is commonly available in rolls or batts and is typically used to insulate between the joists of the loft floor or between the rafters in the roof space. Fiberglass insulation is lightweight, easy to install, and provides excellent thermal performance. Additionally, it has sound-absorbing properties that can help reduce noise transmission between floors.
Rigid insulation boards:
Insulation boards on the other hand are composed of rigid foam materials such as expanded polystyrene (EPS), extruded polystyrene (XPS), or polyisocyanurate (PIR). These boards offer high insulation values in a relatively thin profile and are ideal for situations where space is limited. Rigid insulation boards can be installed between the rafters, on top of the existing loft floor, or beneath the loft floor to insulate the ceiling of the room below.
When selecting the appropriate loft insulation material and installation method, it’s essential to consider factors such as the available space, the desired insulation value, and any specific requirements for your home, such as fire resistance or moisture resistance. Properly installed loft insulation can significantly improve your home’s energy efficiency, resulting in reduced energy consumption, lower utility bills, and a reduced environmental impact.
What are the Benefits of Loft Insulation?
The benefits of installing loft insulation in your home are numerous and wide-ranging. Here is a more detailed and informative look at some of the primary advantages:
- Reduced energy consumption: Properly installed and maintained loft insulation helps to minimize heat loss through the roof leading to more energy efficient heating and cooling systems. As a result you can enjoy lower energy bills and decreased energy consumption
- Enhanced comfort: With effective loft insulation your property’s indoor temperature remains more consistent providing increased comfort throughout the year. During the colder months the insulation helps to retain heat, keeping your living spaces warm, while in the summer it prevents excessive heat from entering, maintaining a cooler interior
- Increased property value: Homes with energy efficient features such as loft insulation are often more attractive to potential buyers or tenants due to the higher EPC rating which can be related to lower energy bills . These features demonstrate a commitment to sustainability and reduced energy costs, potentially increasing your property’s value and making it more appealing to potential buyers or tenants
- Environmental benefits: By reducing your property’s energy consumption through effective loft insulation you can lessen your carbon footprint and contribute to a healthier environment. Reduced energy usage means lower greenhouse gas emissions and a decrease in the demand for non renewable energy sources
- Better soundproofing: Insulation materials, particularly fiberglass insulation, have sound-absorbing properties that can help to reduce noise transmission between floors, providing a quieter and more peaceful living environment
- Low maintenance: Loft insulation materials are designed to be long-lasting and require minimal maintenance. They are typically odourless, rot-proof and do not absorb moisture. Additionally, they do not support vermin or promote the growth of fungi, mould or bacteria ensuring a cleaner and healthier living space
- Improved indoor air quality: By reducing drafts and regulating temperature loft insulation can help maintain a stable indoor environment. This stability can prevent issues related to excessive moisture, such as mould and mildew growth contributing to better indoor air quality and a healthier living environment
What does Loft Insulation installation cost?
The cost of loft insulation installation can differ based on various factors, including the size and complexity of the project. Although prices can vary our basic loft insulation installation services typically begin at around £600 + VAT. However, the final cost may be influenced by additional tasks, such as the creation of storage spaces or other requirements
To provide an accurate quote we will carry out a detailed survey in order to ensure all your requirements are met
Additional insulation measures or ancillary works to consider when insulating a loft
When carrying out loft insulation it’s essential to consider insulating other elements in the loft area to ensure maximum energy efficiency. Some of these elements include:
- Pipework:
Insulating hot water pipes, cold water pipes and central heating pipes can help reduce heat loss and improve energy efficiency as well as minimise the risk of freezing. This is particularly important if the loft space is used as a living area as it can help maintain consistent temperatures throughout the home
- Hatch and access door:
The loft hatch or access door should be insulated and sealed to prevent drafts and heat loss. This can be done using weatherstripping and insulated panels or boards
- Electrical fittings:
Insulate and seal any gaps around electrical outlets, fixtures or other penetrations in the loft space. This can help reduce drafts and air infiltration which can impact the effectiveness of the insulation
- Ventilation in lofts:
Proper ventilation is crucial to prevent moisture build up and maintain indoor air quality. Ensure that the loft insulation doesn’t block soffit vents or other ventilation systems. Installing a vapor barrier between the insulation and the living space can also help manage moisture levels
- Cold water storage tanks:
Insulating cold water storage tanks can help prevent freezing during winter months reducing the risk of burst pipes and potential water damage. It can also help maintain a more stable temperature for the water in the tank reducing the need for additional heating or cooling. To insulate a cold water tank we use tank jackets or insulating material like mineral wool or rigid foam boards. We make sure to cover the entire tank including the sides and top and secure the insulation in place.
What Does the Installation Process of Loft Insulation Involve?
The installation process of loft insulation involves several steps to ensure a properly insulated and energy-efficient home. These steps include
- Site assessment: We will assess your property to determine the type of insulation best suited for your needs and the amount required. This assessment will take into account factors such as the age of your home, the existing insulation and your property’s construction type
- Loft inspection: Before the installation we will inspect your loft for any issues such as condensation, dampness or damage to the ceiling or joists. This step helps identify any necessary repairs before proceeding with the insulation process
- Plumbing and electrics assessment: We will assess any plumbing and electrical systems in the loft, checking whether they need to be moved, extended or protected during the insulation process. This is crucial for maintaining the safety and functionality of these systems
- Spotlights and fire safety measures: We will inspect any spotlights present in the loft and determine the appropriate measures required to maintain fire safety. This may involve installing fire rated downlight covers or maintaining proper clearance between the spotlights and insulation materials.
- Installing Loft Insulation: We will install the loft insulation to the required height and depth, ensuring even coverage and proper installation technique. This will involve rolling out insulation material such as mineral wool
- Loft hatch insulation or replacement: We may also insulate or replace the loft hatch as required to minimise heat loss and maintain a consistent temperature within the loft space. This can involve adding insulation boards or weatherstripping to the existing hatch or installing a new energy efficient hatch
- Loft Storage Solutions: Where required and advised we will install storge in form of loft boards on raised legs for storage within the loft
- Final inspection and clean up: After the insulation is installed we will inspect the work to ensure that it meets the required standards and guidelines. We will also clean up any debris or materials left behind during the installation process
How to cover Spot Lights when Insulating a Loft (minimise risk of fire)
Spotlights especially recessed ones can pose a fire risk if not properly insulated and ventilated. When insulating a loft, it’s essential to take precautions to minimize this risk.
- Using appropriate downlight covers: Downlight covers, also known as fire hoods or loft caps, are specifically designed to cover spotlights safely. They are made from fire-resistant materials that can withstand high temperatures reducing the risk of fire. When choosing downlight covers we make sure they are compatible with your spotlights and meet relevant fire safety standards
- Ensuring proper installation: Typically, they are placed directly over the spotlight with a gap between the cover and the insulation material. This gap allows for proper heat dissipation and ventilation, preventing overheating
- Maintain ventilation: It’s crucial to maintain adequate ventilation around spotlights as excessive heat build up can increase the risk of fire. We ensure not to block any vents or air gaps when installing insulation and avoid tightly packing insulation material around the downlight covers
- Checking compatibility with insulation materials: Some downlight covers may only be compatible with specific insulation materials. We ensure that the covers we choose are suitable for use with your chosen insulation type and follow the manufacturer’s guidelines for installation
- Regular maintenance: After installations you should periodically check your spotlights and downlight covers for any signs of wear, damage or overheating. If you notice any issues address them promptly to maintain safety
What Happens with Electrics and Plumbing during the Installation Process?
These will be inspected during the initial assessment. Plumbing valves and pipework that may required access at a later date may need to relocated and exposed. Continuous pipework that is secured can be insulated over. Any exposed tanks and pipework will be insulated separately.
Any 1.5mm and 2.5mm cables that are continuous and without joints can be covered but larger cables (eg. Shower cables) will if possible be placed over the insulation. If this is not possible due to the length then they will be adequately extended.
Any spotlights with be adequately covered with a fire proof material to avoid over heating and causing risk of a fire hazard.
What other Loft Insulation related services do you provide?
Boiler Installation:
We provide a variety of Gas Boiler installations including Heat Only, System Boilers and Combi Boilers. We are experienced and registered installers of all major brands such as Idea, Baxi, Main, Vaillant, Keston and many more.
External Wall Insulation:
Installation of external wall insulation to reduce heat loss from the walls of the property and increase efficiency of the property.
Smart Heating Controls:
Smart Heating Controls are intelligent thermostatic controls for your heating system. You can remotely control your heating from a smartphone, tablet, or other internet-connected device that is wirelessly connected to the internet. They also help save money on your heating bills because you have more control over your heating. Additionally, you have individual room temperature control. By not heating unused spaces, you have more opportunities to reduce your heating costs. Most common smart heating controls include thermostats and TRVs
Commercial EPC:
Energy Performance Certificate for office buildings, mixed used, commercial and industrial properties. A certificate required for rental or sale of any commercial property.
Residential EPC
An Energy Performance Certificate (EPC) is a document collated from an energy assessment of a property to outline how efficiently the property performs in energy consumption and heat retention. Similar to the multi-coloured labels now seen on new appliances, EPCs advise how energy efficient a building is and give it a rating from A (very efficient) to G (inefficient). In the UK an EPC is a legal document required to rent or sell your property.
Frequently Asked Questions
How does loft insulation work?
Loft insulation works by trapping a layer of air between the insulation and your home’s ceiling. This layer of air acts as a barrier, keeping your home cool in the summer and warm in the winter.
How long does loft insulation installation take?
The time it takes to instal loft insulation is determined by the size of your home and the type of insulation material you select. In most cases, the procedure can be completed in a few hours.
Is it possible for me to instal loft insulation myself?
While it is possible to instal loft insulation yourself, but you must make yourself aware of the requirements and dangers of not dealing with existing plumbing and electrics. In addition you may also not adhere correctly to the ventilation requirements which may create a problem in the future. It may pay to hire a professional with the correct qualifications and insurance to carry out the installation.
Can loft insulation help me save money on my utility bills?
Loft insulation that is properly installed and maintained can be more energy efficient, saving you money on your energy bills. It does so by minimising the heat loss from the roof of the property.
What is the importance of ventilation in an insulated loft?
Ventilation is essential in an insulated loft because it prevents excess moisture from accumulating. This is especially important during the winter months when the air inside your home is colder, causing moisture to condense on the surfaces of your loft or attic. If this moisture is not properly ventilated, it can cause mould growth, which is both harmful to your health and damaging to the structure of your home. Furthermore, proper ventilation can help to regulate the temperature in your loft or attic, extending the lifespan of your insulation.
What is room-in-the-roof insulation?
Insulation of the roof space in a home that has been converted into a habitable space, such as a bedroom or loft conversion, is referred to as room in the roof insulation. This type of insulation is similar to traditional loft insulation, but it may need additional consideration for the converted space’s specific needs.
If the space is being used as a bedroom or living area, for example, it may need to be more heavily insulated to provide a comfortable living environment. It is also critical to ensure that insulation is installed and maintained properly in order to maximise energy efficiency and effectiveness.
What is the difference between insulation at joists and insulation at rafters?
Insulating at the joists is the process of installing insulation between the floor joists of your loft or attic. This type of insulation can help to prevent heat loss through your home’s ceiling and can improve your home’s energy efficiency.
Insulating at the rafters is the process of installing insulation between the rafters in your home’s roof. This type of insulation can help to prevent heat loss through your roof while also improving your home’s energy efficiency.
The primary distinction between insulating at the joists and insulating at the rafters is the location of the insulation. Insulating at the joists is commonly used to insulate the loft or attic space’s floor, whereas insulating at the rafters is used to insulate the roof. Both types of insulation can help improve your home’s energy efficiency, but the method you use will depend on the needs of your home and the type of insulation material you use.
It is important to consider the ventilation requirements for both types of insulation as they each are slightly different
Is it possible to insulate over existing electric cables?
It is not generally advised to install insulation over existing electric cables. This is due to the fact that the insulation can interfere with the proper operation of the cables, potentially causing overheating or other problems. Furthermore, installing insulation over existing electric cables can pose a fire risk.
Currently the law allows insulating over 1.5mm cables (lighting cables) and 2.5mm cables (socket cables) as long as they are continuous with any joints that may require access. Any larger cables such as 4mm, 6mm and 10mm (typically supplying electric showers and cookers) cannot be covered by insulation.
Is it necessary to insulate the plumbing in my loft?
It is generally a good idea to insulate any plumbing in your loft or attic space. This can help prevent pipes from freezing in the winter, which can result in costly repairs. In addition insulating your plumbing can help you save energy by preventing heat loss through the pipes.
Foam pipe insulation and heat tape are two types of insulation materials that can be used to insulate plumbing. It is important to select a material that is appropriate for the type of pipes you have and to follow the manufacturer’s installation and use instructions.
Can I put boards above my insulation to create loft storage space?
It is generally not recommended to cover your insulation in the loft or attic space with boards or any other type of covering. This is because the insulation is intended to work by trapping a layer of air between the insulation material and your home’s ceiling. Covering the insulation with boards or other materials can disrupt this air flow, reducing the insulation’s effectiveness.
There are other options to consider if you want to add more storage space to your loft or attic. Installing shelving or storage units on the space above. This can help you maximise your storage space while keeping the insulation intact. The other option is to raise the boards by using loft board legs, raising the boards above the insulation and therefore not affecting the properties of the fibre glass insulation
Can I still insulate my loft if I have spotlights?
Yes but it is critical to place approved fire proof coverings around the spotlights to minimise overheating and risk of a fire.
