Are you tired of those chilly drafts sneaking into your home during the winter months? Or maybe you cringe every time you receive your energy bill due to your home’s inadequate insulation. If so, it might be time to consider retrofitting wall insulation.

Retrofitting your walls with the right insulation can make a significant difference in your home’s comfort and energy efficiency. In this blog post, we’ll explore the ins and outs of retrofit wall insulation and guide you on how to choose the right one for your home.

Understanding Retrofit Wall Insulation

Before diving into the nitty-gritty of choosing the perfect retrofit wall insulation for your home, let’s start with the basics. Retrofit wall insulation is the process of adding insulation to the existing walls of a home. It’s a cost-effective way to enhance energy efficiency and improve your home’s overall comfort.

Retrofit wall insulation can help regulate the temperature in your home by keeping it warmer in the winter and cooler in the summer. It also helps reduce energy bills and minimises the environmental impact of your household. Now, let’s get into the details of how to choose the right retrofit wall insulation.

  1. Assess Your Home’s Needs

The first step in choosing the right retrofit wall insulation is to assess your home’s specific needs. Every home is unique, and factors such as your geographical location, climate, and current insulation levels will influence your decision.

Conduct a thorough energy audit or consult with a professional to understand your home’s insulation requirements. This will help you determine the right R-value (thermal resistance) for your retrofit insulation.

  1. Consider Insulation Types

When it comes to retrofit wall insulation, you have several options to choose from. The most common types include:

  • Fiberglass Insulation: This is a budget-friendly option that is easy to install. It comes in rolls or batts and offers good thermal resistance.
  • Cellulose Insulation: Made from recycled paper products, cellulose insulation is an eco-friendly choice. It can be blown into wall cavities and provides excellent insulation.
  • Spray Foam Insulation: Known for its superior insulating properties, spray foam can fill gaps and create an airtight seal. It’s ideal for homes that need maximum energy efficiency.
  • Rigid Foam Insulation: This type is best for insulating exterior walls. It’s moisture-resistant and provides a high R-value.

Choose the insulation type that best suits your home’s needs and budget.

  1. Installation Method

The installation method for retrofit wall insulation depends on your home’s construction. You can opt for either the “blown-in” method, where insulation is blown into wall cavities, or the “batt” method, where pre-cut insulation is fitted into place.

The choice of method can impact the insulation’s effectiveness, so it’s crucial to select the one that aligns with your home’s structure.

  1. Hire a Professional or DIY?

Deciding whether to hire a professional or embark on a DIY project is an important consideration. While installing retrofit wall insulation can be a DIY project for some, it’s often best left to the experts.

A professional can ensure proper installation, which is crucial for the insulation to perform at its best. Don’t hesitate to seek expert advice if you’re unsure about tackling this project on your own.


Retrofit wall insulation is a smart investment in your home’s comfort and energy efficiency. By assessing your home’s needs, considering insulation types, choosing the right installation method, and deciding whether to hire a professional, you can make an informed decision about the perfect retrofit wall insulation for your home.

Don’t let those chilly drafts and high energy bills continue to bother you; take action and retrofit your walls with the insulation that’s just right for you. 

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