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The Benefits of Adding Roof Insulation for Winter Energy Efficiency

Marielle Bautista • March 7, 2025

We are coming out the other side of another cold and wet winter here in Bicester, but that doesn’t mean you should wait until next winter to take action on your roof. We still have some cold days ahead even through Spring and Autumn, this blog will give you information that might result in you not having to use the heating in your home well into spring and so early before winter.


When the next winter arrives in full force, homeowners across the UK face the challenge of keeping their homes warm while battling rising energy costs. For many, this can feel like a losing battle between comfort and affordability, especially as energy prices continue to climb. However, one highly effective solution often overlooked is improving a home's roof insulation.


At M&C Roofing and Building, we know just how vital proper insulation is—not only for making your home warmer during those chilly winter months but also for saving you money on energy bills in the long run.


"Don't let a damaged roof compromise your home's comfort and safety. Expert roofing services are just a call away."


In this blog post, we'll explore the benefits of upgrading or installing roof insulation, how it contributes to winter energy efficiency, and why it's an essential investment for your home.


Why Roof Insulation is Important


Your home's roof plays a significant role in overall energy efficiency. Heat naturally rises, and without effective insulation, much of the warmth you generate indoors escapes through the roof. According to research by the Energy Saving Trust, as much as 25% of heat loss can occur through an uninsulated roof. This means higher energy consumption as your heating system works overtime to compensate for this lost heat.




A thermal image of a house with a fence in front of it.


By upgrading your loft or roof insulation, you effectively create a thermal barrier that keeps heat in during the winter and out during the warmer months. This leads to a more energy-efficient home, greater comfort, and lower heating bills.


Key Benefits of Adding Roof Insulation


1. Lower Energy Bills


One of the most immediate and noticeable benefits of adding roof insulation is the reduction in your energy bills. Heating accounts for a significant portion of energy use in UK households, and poor insulation forces you to use more energy to maintain a comfortable temperature.


By sealing off heat escape routes, insulation allows your home to retain warmth for longer—reducing the workload on your boiler or central heating system. According to the Energy Saving Trust, properly installing insulation in an uninsulated loft could save you up to £355 per year in energy costs.


2. Improved Home Comfort


Anyone who has lived through a damp and drafty British winter knows just how challenging it can be to stay warm at home. A well-insulated roof keeps warm air trapped inside, meaning your living spaces stay cosier for longer. Insulation also helps regulate internal temperatures, preventing uncomfortable cold patches and maintaining consistency throughout your home.


3. Increased Energy Efficiency and Environmental Benefits


Improving your roof insulation aligns perfectly with efforts to reduce your household’s carbon footprint. By consuming less energy to heat your home, you'll rely less on fossil fuels and reduce CO2 emissions. This contributes to a more sustainable future, supporting the UK's target of achieving net-zero carbon emissions by 2050.


For eco-conscious homeowners, investing in insulation is an excellent step toward making your property more green and energy-efficient.


4. Added Property Value


Potential buyers find energy-efficient homes more appealing, and properties with well-insulated roofs often achieve higher Energy Performance Certificate (EPC) ratings. A high EPC rating not only helps attract buyers looking for cost-effective and sustainable properties but could also result in a better sale price if you decide to sell your home.


5. Noise Reduction


The benefits of insulation aren’t restricted to thermal performance—it also acts as a sound barrier, shielding your home from external noise pollution. Whether it's heavy rain, neighbourhood noise, or nearby traffic, insulation dampens sound transmission, helping to create a quieter, more peaceful indoor environment.



Types of Roof Insulation


When considering roof insulation, it’s important to know your options. Each material has its own benefits, and the right choice will depend on your home’s design and your specific needs. Below are some of the most commonly used types:


1. Blanket Insulation (Rolls or Batts)


This type is the most popular for lofts and comes in rolls made of fibreglass wool, rock wool, or natural fibres. It's cost-effective, easy to install, and provides excellent coverage for large surfaces.



A man is rolling up a roll of insulation in an attic.

2. Loose-Fill Insulation


Loose-fill insulation consists of small particles that can fit into hard-to-reach spaces. It is ideal for irregularly shaped loft spaces. The materials used are cellulose, recycled paper, or mineral wool.


3. Rigid Foam Boards


These are durable, lightweight sheets that offer superior thermal resistance. They’re commonly used in pitched roofs and can be installed above or below the rafters.


4. Spray Foam Insulation


Spray foam expands to cover awkward spaces and provide an airtight seal. We do not recommend spray foam insulation as an option due to restrictions by lenders for properties with Spray foam. In fact, we offer Spray Foam Removal services for those that have used this type of service and had it installed.


Get a Free Insulation Quote

How Much Does Roof Insulation Cost?


The cost of adding roof insulation can vary depending on factors like the size of your roof, the type of insulation used, and whether it’s a DIY project or professionally installed. On average, loft insulation for a standard-sized semi-detached home in the UK costs between £500 and £1,000 for professional installation. While this may seem like a considerable upfront investment, the energy savings over time often pay for the initial cost within a few years.


A graph showing the estimated annual savings on roof insulation.

Source: Renewable Energy Hub. These figures are estimates and can vary. These estimates are based on a gas-heated, 3-bedroom semi detached home in the UK in 2024. Contact us for a personalized assessment and quote for your property.




When Should You Insulate Your Roof?


The best time to insulate your roof is before the winter months when energy demand—and costs—are typically at their highest. However, even if the season is already in full swing, it's never too late to reap the rewards of better insulation. A professionally installed insulation upgrade can be completed quickly, allowing you to enjoy the benefits almost immediately.


Signs Your Current Roof Insulation Needs Replacing


If your home is already insulated but you’re still struggling with warmth retention or high energy bills, it may be time to assess the condition of your existing insulation. Look out for the following telltale signs:


  • Draftiness or cold spots indoors
  • Mould or condensation in your loft
  • Spiking energy costs
  • Visible gaps or thinning of insulation material


Scheduling a professional inspection will help identify whether you need to replace or upgrade your insulation.

Choosing the Right Professionals for the Job


While some homeowners consider insulation a DIY task, hiring professional installers ensures the job is done thoroughly and to the highest standards. At M&C Roofing and Building, we combine years of industry expertise with a commitment to quality, providing tailored solutions to meet your insulation needs. We’ll assess your roof, recommend the best insulation type, and complete the installation efficiently, giving you peace of mind that your home is ready to face the cold months ahead.




"Top-rated roofing means peace of mind. Trust your home to the professionals who deliver excellence."


Conclusion


Investing in roof insulation is one of the most effective ways to improve your home’s energy efficiency, keep your family warm during the winter, and reduce your energy costs. Beyond the immediate benefits of comfort and savings, insulation contributes to a greener planet by lowering your carbon footprint and boosting your property's overall value.


If you’re looking to upgrade your roof insulation or need expert advice on the best options, M&C Roofing and Building is here to help. From comprehensive consultations to flawless installations, we’ve got you covered.


Contact us today for a free consultation, and we can transform your home into a warm, energy-efficient haven this winter.


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