Spray Foam Insulation – Huntsman Building Solutions Contractor


Useful Articles Making Best Living

How much does it Cost to Upgrade Old Insulation in 2023?

If you do not replace the existing insulation in your home, you may find that it necessitates more energy consumption to heat or cool it. This often results in higher electricity bills, uneven heating and cooling, and an HVAC system that must run consistently to meet the energy demands. 

Moreover, if your insulation is deteriorating or catering to unwanted visitors, your energy bills may rise while your level of comfort will decrease. When you notice that some rooms are colder or warmer than others, the coating is full of pests, or even if it is wet, it is time to definitely replace it.

In fact, you can install new insulation over existing insulation layers in every region of your house. You don’t even have to use a similar material as your existing insulation. Rather, choose the material that better fits your current requirements, taking into account all of the following factors:

  • R-values for energy efficiency 
  • Your financial budget
  • Any health concerns you may have
  • Insulation material durability
  • Material’s Environmental Friendliness

Unless your home was built with energy efficiency in mind, you can possibly reduce your energy bills by introducing an additional layer of insulation. Many older homes have less insulation than newer homes, but adding spray insulation to a relatively new home can pay for itself in a matter of a few years. 

Basically, old insulation must be removed because it impedes airflow into the attic, promotes mould growth, and sometimes becomes filthy.

Common Signs your Old Insulation Must Be Removed

Reasons to remove old layers of insulation might be

  • Fire damage.
  • Water damage.
  • Higher energy consumption than usual.
  • Rats getting up in the loft and destroying the insulation layer. 
  • Dangerous old insulation that may contain asbestos.
  • Insulation that has been squashed by storage boards.
  • The insulation is tearing apart. 
  • If dust gets filtered through the insulation, it should be replaced.

Insulation Types

You have several options for installing new insulation on your old insulation layer:

  • Batt Insulation 
  • Rolled Insulation 
  • Blown Insulation or Loose-fill Insulation
  • Spray Foam Insulation 

If your fibreglass is seven to ten years old, it should be replaced, if not readjusted, resealed, or reinsulated so far. 

Blown-in-attic insulation materials such as cellulose, fibreglass, and rock wool are composed of loose fibres with air pockets between them. Blown-in insulation soaks up more water than fibreglass or stone wool insulation, causing it to settle faster and lose R-Value more quickly than other kinds of insulation.

Mineral wool is a relatively long-lasting form of home insulation that is becoming increasingly popular. While the lifespan will vary depending on the product used, mineral wool insulation can typically last several decades before demanding a replacement.

In reality, spray foam should not need to be replaced if it is sprayed properly with the assistance of an expert or skilled installer like Evergreen Power UK contractors. Spray foam insulation should not need to be removed in most cases for the longevity of the structure and let it remain intact as much as it can.

Many people in the UK never prefer to replace spray foam insulation. However, if adverse weather, raccoons, construction, or other factors have harmed your spray foam insulation layer you may require replacement or repair.

Is it Worth Upgrading the Existing Insulation?

In general, replacing existing insulation may not be worthwhile if the old insulation is dry, dust-free, and not squashed at all. Its removal is not required in such circumstances. In fact, leaving old insulation can be quite beneficial to homeowners. 

By leaving old insulation in place, you will still benefit from it while installing a secondary layer of insulation over it. 

But if the old insulation is to joist depth, try to install new insulation diagonally. In this manner, they will fill any gaps in the already existing insulation. 

However, if the old insulation becomes wet, it is worthwhile to replace it. Leaving the old wet insulation in place and adding new insulation over it will cause the dampness or condensation to return time and again. 

This will only result in mould and higher gas bills. Given the rising cost of heating, replacing old insulation with a new one is always a good idea worth considering.

How much does it cost to replace existing insulation?

The cost of home insulation varies greatly depending on several factors, including the type and material of insulation used. Glass wool and spray foam are the two most commonly used options in UK lofts and for replacing existing insulation layers. 

If you plan to insulate your loft to the recommended 270mm thickness, fibreglass insulation is the cheapest option.

A rigid board is another common way to insulate your loft. It is twice the cost of fibreglass. 

HBS (Icynene) spray foam insulation cost, on the other hand, is used in the majority of cases because it can achieve higher thermal performance with less material that too at an affordable price. 

HBS (Icynene) spray foam insulation is one of the most long-lasting, effective, and dependable types of home insulation. It has the potential to last a life span or even more. Because it is resistant to mould formation and does not retain moisture, it does not move and typically remains in place until forcibly removed.

When should I replace my Insulation?

Water damage is one of the primary triggers of insulation degradation and the primary reason behind insulation replacement. But you don’t have to remove your insulation unless it’s wet, mouldy, or infested with pests.

Wet insulation will have to be replaced if you have roof leaks that severely cause moisture damage. 

Moisture build-up can hasten the deterioration of your insulation. When moisture and mould grow on your fibreglass insulation, the fibres begin to separate and become stringy. Mould will quickly grow on wet insulation, releasing harmful toxins into the atmosphere. 

The natural pockets of air found in the material become clogged with water, rendering the insulation ineffective. It should be apparently replaced when:   

  • Your room temperature fluctuates.
  • You have trouble getting your house to the “right” temperature and maintaining it. 
  • Your entire house is draughty. 
  • Certain rooms in the house have a draught.
  • Your utility bill is excessively high.
  • Someone in your family is frequently prone to allergies or illness.
  • You have recurring leaks, humidification, or other moisture problems.

Insulation Inspection and Evaluation

Examine the attic, walls, and ceilings near an unheated space, such as a garage or basement. The structural elements are typically exposed in these areas, making it simple to determine the type of insulation and measure its depth or thickness.

Using an electrical outlet, inspect the exterior walls:

  • Turn off the outlet’s power.
  • Radiate a flashlight into the crack between the outlet box and the wall. You should be apt to see if the wall has insulation and how thick it is.
  • If necessary, remove a small amount of insulation to check its effectiveness. 
  • Examine all floor outlets as well as old ones.


We will make recommendations without any obligation, whether you wish to replace your home insulation or seek a different solution. The procedure is simple and straightforward, and it can have a significant impact on your daily life.

It is highly pertinent to timely replace your insulation layer because inadequate insulation can drastically affect your budget. People in your home may also suffer from unpleasant symptoms. If old, broken insulation is left alone, it creates an ideal environment for mould and bacteria and some people may develop allergies or even become ill. 

Insulation can deteriorate over time. Age, harsh weather, and critters in your walls can all degrade the material, making it less effective with advancing time. If you do not replace the insulation in your home, you may find that it necessitates extra energy to heat or cool it. 

Leave a Reply

Your email address will not be published. Required fields are marked *