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How to Avoid Thermal Bridging

how to avoid thermal bridging in construction

A thermal bridge is part of an object, such as a building, with a noticeably higher rate of heat transfer than other parts of the object. This leads to the building or object suffering from reduced thermal insulation overall.

These issues are most common in poorly constructed or poorly insulated older buildings, which often have single glazing. But they can be present in modern buildings too, often as a result of shoddy workmanship.

So with that in mind, we’re going to explain how to avoid thermal bridging all-together. Let’s begin!

What is Thermal Bridging?

Thermal bridging is the process of heat transferring from a warm area to a cold area, through a thermal bridge. This most commonly occurs around balconies or glazing, where building elements penetrate the insulation, or the envelope of the building.

Thermal bridging causes heat transfer across the area of the building or object, making its surface temperature different from other insulated surfaces.

This can lead to the build-up of condensation as moist, warm internal air contacts the cold surface. So without further ado, let’s discuss how to avoid thermal bridging.

The Issue with Uninsulated Walls

It’s hard to prevent thermal bridging if walls are uninsulated, especially in buildings with solid wall construction.

The gap between brickwork layers in cavity walls means they are more effective at retaining heat, but their U-Value is still only around 1.5 W/m²K – not really that low compared to the values of a wall with insulation.

As energy companies change their tariffs, and the cost of heating your home continues to rise, ensuring your home is energy efficient is more important than ever before.

Older buildings suffer more from thermal bridging than new-build properties. Regular inspections are key with older properties to ensure your home is as energy efficient as possible. Insulating external walls not only protects your building’s façade, it also boosts thermal quality, and prevents moisture gain.

how to avoid thermal bridging

The Science of External Wall Insulation

The science may be fairly complex, but the explanation itself is a simple one. Our insulation is sprayed, or painted, onto the exterior walls of your home.

Whilst it might appear visible at first (it’s usually obvious a product has been applied), it quickly sinks into the masonry, just like moisturiser on skin, becoming totally invisible.

The insulation forms a barrier which can penetrate up to 17mm into the brickwork.

What benefits does this have for your home? Well, LogicFoam Wall Insulation is a bit like giving your home a waterproof coat, as it reduces the absorption of water by over 95%.

When the masonry cream bonds chemically to the insulation substrate, it provides protection from dust, micro-organisms and water. Because heat travels faster across wet and cold areas, dry walls will provide better insulation for your home.

Applying LogicFoam Wall Insulation prevents water from penetrating, and improves your home’s thermal efficiency. But the building can still breathe – vapour and air can still permeate, whilst water can’t.

how to avoid thermal bridging

By using a trusted, experienced team of experts, you can be sure that you will achieve the best possible results for your home!

Our Recommendations for Exterior Wall Insulation

It takes an experienced professional to properly apply exterior wall insulation. For the best results, you need to hire somebody skilled – someone who knows how to avoid thermal bridging all-together!

We would always recommend hiring a professional team when it comes to exterior wall insulation, rather than trying to do the job by yourself.

You might enjoy a bit of Sunday afternoon D.I.Y, but it’s best to stick to the simple tasks, like constructing flat-pack furniture, or installing shelves.

If you’re not experienced in installing exterior wall insulation, then you could risk your own safety and end up with less than perfect results – we definitely don’t recommend cutting corners.

The Benefits of External Wall Insulation on Cavity Walls

Now we’ve discussed how to avoid thermal bridging in detail, let’s talk about the benefits of external wall insulation on cavity walls.

Cavity walls already have some insulation benefits, but you can still reap the benefits of applying external wall insulation on cavity walls, making your wall more effective at trapping heat inside your home.

When it comes to insulation, cavity walls are usually filled with insulating material, such as spray foam or beads. Whilst this is a cheap and cost-effective option, it has its disadvantages that you need to carefully consider.

One of the main disadvantages of this option relates to moisture entering your property. By packing the gap between the inner and outer shell, you are effectively creating a bridge which allows moisture to travel across, and enter your home with ease.

We strongly recommend you don’t use this type of insulation, as it is completely counterproductive! It can cause a range of problems in the future, encouraging heat loss from your home (the very thing you are trying to avoid), known in the industry as thermal bridging.

This could even cause structural damage to your property.

The best option when it comes to insulation for cavity walls is to use external wall insulation. By doing so, you can prevent moisture from ever entering your home in the first place, and keep your home protected against the elements for years to come.

how to avoid thermal bridging

We carefully apply a special coating to your home’s exterior walls, which provides protection from the elements, and repels moisture from masonry

The Benefits of External Wall Insulation on Solid Walls

When it comes to insulation for solid walls, there are really only two choices: internal insulation or an external coating. Our team of insulation specialists can apply LogicFoam Spray Foam Insulation if you decide to opt for internal insulation.

However it is important to bear in mind that the application process can get in the way of your daily life, as we will need to access the interior of your home. This type of insulation can also take away some of your available floor space – not great if you are already living in a small property.

The best choice by far for solid walls is external wall insulation. This is used to trap hear within the home whilst making solid walls water repellent.

What are the Benefits of External Wall Insulation Overall?

Whatever wall type you have, external wall insulation provides your home with many benefits overall, such as:

  • Traps heat inside your home, cutting your energy bills
  • Safe to use and completely non-toxic
  • Protection for up to 20 years
  • Reduces condensation-related problems
  • Improves internal acoustics and blocks outside noise
  • Refreshes the façade of your home
  • Provides long-lasting protection against all UK weather

The team at LogicFoam are always more than happy to help and offer advice, whatever type of insulation you are looking for. How to avoid thermal bridging couldn’t be easier than with the help of our trusted insulation specialists!

Do You Need Planning Permission?

It always makes sense to check if planning permission is required before commencing with any external works on your property.

Although this is generally only applicable if your property is within a conservation area or is a listed building, there is no harm in checking with your local council to avoid any problems down the line!

If work carried out will affect the exterior appearance of your property, then you will need planning permission before work commences.

This is why it’s always a good idea to contact your local council first to check.

LogicFoam – How to Avoid Thermal Bridging

The team at LogicFoam are always more than happy to help and offer advice, whatever type of insulation you are looking for. How to avoid thermal bridging couldn’t be easier than with the help of our trusted insulation specialists!

To contact us for more information, just call 0800 1700 636. Alternatively you can contact us by email at survey@homelogic.co.uk. Whatever your insulation queries, our team of expert advisors is on hand throughout the day to help you.

We may be a little biased, but we recommend using the best product on the market to make your home more energy efficient – LogicFoam Wall Insulation! To find out more, give us a call on 0800 1700 636, or simply click the button below to get in touch direct!

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