Why Wall Ties Are So Important

Cavity walls are built in two layers (inner and outer leaf) separated by a cavity. Wall ties are the unseen connectors linking these two leaves, ensuring they act as a single, stable structure. When these ties weaken or break, the outer layer is left unsupported, significantly reducing wind resistance and structural stability.

Modern stainless-steel wall ties are designed to last decades, but many older properties still rely on mild steel ties installed in the 1930s–1980s, which are far more prone to corrosion.

How Wall Tie Failure Happens

• Corrosion Over Time
  Mild steel wall ties, especially those installed before the 1980s, corrode as their protective coatings break down.

• Damp Cavity Wall Insulation
  Moist insulation traps water against ties, speeding up corrosion.

• Exposure to Weather
  Exposed areas suffer more severe conditions.

As corrosion develops, the metal expands. Developing rust takes up a greater volume than the original steel, which forces the surrounding mortar to crack and lift. This expansion is exactly what causes the classic “step-cracking” pattern seen in the image.

Why Early Detection Matters

By the time cracks are visible on the outside of a wall, the hidden ties may have been failing for years. Early detection through a professional wall tie survey allows remedial work to be carried out before the wall loses its stability.

CavClear’s Approach to Wall Tie Remediation

When wall tie failure is confirmed, we follow a proven three-step process:

1. Install New Stainless-Steel Remedial Ties
   We drill precision holes and insert corrosion-resistant stainless-steel wall ties to restore the connection between the inner and outer leaves. These ties are engineered for exceptional durability and long-term stability.

2. Isolate Old Ties
   The old corroded ties are either removed or isolated with special sleeves to prevent further rust expansion and cracking of the brickwork.

3. Stabilise and Repair Brickwork
   We carry out targeted masonry repairs to restore appearance and ensure the wall is structurally sound.

This approach prevents further deterioration, strengthens your walls, and often saves the homeowner the much larger cost of rebuilding sections of the property.

Key Warning Signs of Wall Tie Failure

• Step-cracking in mortar joints (especially diagonally).

• Bulging or bowing walls.

• Movement around window or door openings.

• Properties built before the use of modern stainless-steel ties.

Book a Wall Tie Survey with CavClear

If you’ve noticed step-cracks, bulging walls, or own a property built before the 1980s, a wall tie survey is the most effective way to protect your home. Contact CavClear today to book your professional wall tie survey and protect your home from hidden structural risks.

The post When Wall Ties Fail: The Hidden Risk Behind Step-Cracking Walls appeared first on Cavity Wall Insulation Removal.

At CavClear, we’re often called in when cracks start raising questions, and we’re here to give straight answers. Here’s what you need to know about the causes of cracked brickwork, and how our specialist surveys and repairs can help protect your property.

Not All Cracks Are Created Equal

Cracks in brick walls can form for all sorts of reasons. Some develop slowly over time, others appear suddenly after heavy rain or extreme temperature changes. The key is understanding the type, location, and pattern of the crack. That’s what tells us whether you’re dealing with something harmless or something structural.

Here are a few common causes we come across:

1. Wall Tie Failure
Wall ties are small but essential, these metal fixings connect the outer and inner walls of a cavity wall, helping the structure act as one. But when they corrode, snap, or were never installed correctly in the first place, the outer leaf can start to move independently. That movement often shows up as horizontal or stepped cracking, especially on gable ends or long walls.

If your home was built between the 1930s and 1980s, wall tie failure is especially common. It’s one of the first things we check during a survey.

2. Ground Movement or Settlement
Subsidence, heave, or just long-term ground settlement can cause diagonal cracks, usually above windows and doors or along corners. While not always linked to cavity wall issues, these types of cracks are a clear sign that something bigger could be happening beneath your property.

We’ll assess whether wall ties or cavity insulation are contributing to the problem or whether you may need input from a structural engineer.

3. Poor or Incompatible Cavity Wall Insulation
If insulation has been poorly installed or has absorbed moisture, it can lead to damp bridging, which weakens the mortar and causes cracking over time. This can be particularly frustrating, as many homeowners had insulation added to improve energy efficiency—only to find it’s now causing bigger problems.

We use moisture meters and thermal imaging to diagnose whether the insulation is contributing to your cracking.

4. Temperature Changes and Weathering
In some cases, cracks form due to expansion and contraction caused by seasonal changes. These are often minor and may not require urgent repair but they can provide an entry point for water, which eventually leads to deeper issues.

How CavClear Can Help

Our approach is simple: find the cause and fix it properly. We start with a Specialist Wall Tie and Cavity Inspection, using borescope cameras, testing equipment, and expert analysis to identify what’s really going on behind your brickwork.

If we discover failed wall ties, we’ll carry out a full Wall Tie Replacement, using stainless steel ties designed to last the lifetime of your property. We’ll also isolate or remove the old corroded ties to stop future cracking.

If damp or insulation is to blame, we can remove defective cavity wall insulation and provide breathable, modern alternatives, or advise on leaving the cavity clear if that’s the best option for your home. If the damage needs structural reinforcement, we install Helibars, which stitch cracks and restore wall stability without major disruption.

The key is to listen early. Cracks that are left to widen over time often lead to far more costly repairs, and may even compromise the structural integrity of your home. If you’re seeing signs of movement, it’s time to get in touch. Contact us today.

The post What Causes Cracks in Brickwork? Common Problems and When to Call CavClear appeared first on Cavity Wall Insulation Removal.

At CavClear, we specialise in a proven method of repair called brickwork stitching. It’s a discreet, effective, and long-term solution that restores the strength of cracked masonry without the need for major rebuilding.

What Causes Step Cracking?

Step cracking typically follows the mortar lines in a zig-zag pattern and is often seen near windows, doors, or corners of buildings. This kind of cracking is frequently caused by the failure of cavity wall ties, metal components that connect the outer and inner layers (or ‘leaves’) of a cavity wall. You can read more about this here.

Over time, especially in older properties, these ties can corrode or break down. When they fail, the outer leaf of brickwork can begin to move independently, resulting in cracks that gradually worsen. In more severe cases, the wall may bulge or even become unstable.

You can read more about this, here.

The Role of Brickwork Stitching

Brickwork stitching is a highly effective way to stabilise cracked masonry and restore the structural integrity of the wall. Instead of removing and rebuilding sections of brickwork, we ‘stitch’ the cracked areas together using stainless steel bars embedded in the mortar joints.

The process involves carefully cutting into the mortar above and below the crack, installing helical bars, and bonding them in place with a strong grout. This ties the masonry back together and spreads the load evenly across the wall, preventing further movement.

Once complete, the wall looks unchanged from the outside, but internally, it’s been reinforced for long-term strength.

Why Stitching Matters in Wall Tie Repairs

In many cases, brickwork stitching goes hand in hand with wall tie replacement. While replacing the failed ties addresses the underlying cause, stitching deals with the visible symptoms, the cracking and weakening of the wall structure. Together, they offer a repair solution that restores both form and function. Unlike some short-term patching methods, stitching is a permanent fix. It doesn’t just hide the problem, it solves it.

When Should You Be Concerned?

If you’ve noticed step cracks forming in your walls, particularly around openings or at the edges of your property, it may be time to act. Cracks wider than a few millimetres, or any sign of bulging brickwork, should be assessed by a professional. Rust stains on the surface of brickwork can also indicate wall tie corrosion. Early intervention can save you from more extensive repairs down the line!

At Cavclear, we combine deep expertise in building preservation with practical, efficient repair techniques. Our team uses the highest quality materials, including stainless steel reinforcement bars and non-shrink grouts, to ensure a long-lasting result with minimal disruption to your property.

Whether you’re dealing with cracking from wall tie failure, settlement, or general structural movement, our brickwork stitching service offers a robust and cost-effective solution.

Get in touch today to book a site visit or find out more about how brickwork stitching could restore strength to your home or property.

The post Brickwork Stitching as a Solution for Step Cracks and Failing Wall Ties appeared first on Cavity Wall Insulation Removal.

• Steel Frames: Conduct heat rapidly, making them highly susceptible to thermal bridging (cold spots that cause condensation and corrosion).
• Wood Frames: Absorb moisture easily, leading to mould growth, rot, and potential structural weakening.
• Cavity Insulation Issues: In framed homes, insulation often traps moisture, causing hidden damage over time.

The Hidden Risks of Insulating Steel and Wood Frame Homes

1. Moisture Retention & Condensation

Unlike masonry walls, steel and wood frame homes are vulnerable to trapped moisture within cavities. Insulation materials like mineral wool or blown-in fiber can absorb and hold water, leading to:

• Condensation buildup inside walls
• Corrosion of steel frames due to prolonged exposure to moisture
• Mould and fungal growth in wood frames, weakening structural integrity

2. Thermal Bridging & Energy Loss

Steel is a great conductor of heat, meaning that any break in the insulation can create cold spots. These cold bridges result in:

• Increased heat loss, making the home less energy-efficient
• Potential internal condensation, causing damp patches and damage to walls

3. Structural Damage Over Time

Moisture trapped in cavities can have serious consequences:

• Steel frame corrosion weakens the structural support of the home
• Wood rot can lead to major repair costs and even dangerous living conditions
• Damp-related damage reduces property value and aesthetic appeal

If you have a steel or wood frame home with cavity insulation, you may already be experiencing issues like damp patches, mould, or high energy bills. In such cases, removing the insulation is often the best solution to prevent further damage.

Benefits of Insulation Extraction:

Removing cavity insulation can help eliminate trapped moisture, preventing further damage to frames. It significantly reduces the risk of mould growth and structural decay in wood frame homes while also preventing corrosion in steel frames, which extends the property’s lifespan. Additionally, it can also improve energy efficiency by addressing thermal bridging issues, ensuring a more stable indoor temperature and reducing energy costs.

While insulation often seems like the right choice, the wrong type in the wrong structure can lead to costly problems. Homeowners with steel or wood frame homes should be cautious about cavity insulation and consider expert advice before installation. If you already have insulation causing issues, extraction may be necessary to protect your property.

Concerned about your home’s insulation?
Contact us today for a professional survey and expert guidance on the best solution for your property!

The post Steel & Wood Frames VS. Cavity Insulation appeared first on Cavity Wall Insulation Removal.

Let’s explore the step-by-step process of wall tie replacement and why it is so crucial in protecting your home in the long run!

The Steps of Wall Tie Replacement

1. Wall Tie Inspection and Survey
Before anything else, a thorough inspection is conducted via our wall tie survey, to assess the condition of the existing wall ties. This detailed survey helps identify the location of the failing or corroded ties and evaluates where they are faulty and need replaced. Accompanied with a full report, this gives you a full breakdown on the current condition of your wall ties and brickwork, along with our recommendations.

2. Brick Removal
In cases where wall tie replacement is recommended, the next step involves removing specific bricks to access the old wall ties. This is carefully carried out to avoid unnecessary damage to the surrounding areas. By removing only a small number of bricks, our team can maintain the wall’s structural integrity while gaining access to the failing ties.

3. Wall Tie Isolation
After gaining access to the old ties, they need to be isolated or otherwise, removed. This is crucial because corroded ties can continue to cause damage if left unchecked. The corroded parts are treated or removed to prevent further deterioration of the wall. Proper isolation ensures that the new ties won’t be affected by the damage caused by the old, corroding ones. You can read more about wall tie isolation, here.

4. New Wall Tie Installation
New wall ties are then installed. These ties are typically made from durable materials such as stainless steel, which offers long-term protection against corrosion. The new ties are placed strategically to restore the connection between the inner and outer walls, ensuring the overall stability and security of the structure.

5. Finishing Steps
Once the new ties are securely in place, the bricks are replaced, and the exterior wall is carefully restored. Our team work to make sure that the repaired sections blend seamlessly with the rest of the wall, leaving your home as we found it, only better!

The Benefits of Wall Tie Replacement

The primary benefit of replacing failing wall ties is the restoration of your home’s structural integrity. Properly installed and effective wall ties help stabilise the building, preventing the outer and inner walls from separating. This minimises the risk of long-term issues like bowing walls or structural cracks.

Prevention of Cracks and Water Damage: 
Failing wall ties often lead to cracks in the exterior walls, which can allow water to seep in. This can cause water damage, mould, and even structural weakening. By replacing the corroded ties, you protect your home from these issues, ensuring a watertight and secure structure.

Enhanced Longevity of Your Home
: New wall ties, made from corrosion-resistant materials, are designed to last for decades. Once the replacement is done, your home will enjoy long-lasting protection against future tie failure, preserving the strength and stability of your property for many years to come.

Increased Property Value: 
Homes with structural issues like failing wall ties can see a decrease in property value. By proactively addressing this problem, you’re not only ensuring the safety of your home but also maintaining or even increasing its market value.

Wall tie replacement is an essential process when dealing with corroded or failing ties in cavity walls, don’t ignore it if you suspect your wall ties are failing! Get in touch with our team today to schedule a Wall Tie Survey on 0333 220 2463, or contact us here.

The post What’s involved in wall tie replacement? appeared first on Cavity Wall Insulation Removal.

Types of Cavity Wall Insulation

Cavity wall insulation comes in various forms, each with its own characteristics:

1. Mineral Wool which is typically made from spun glass or rock fibers. This type of insulation can commonly retain moisture if the cavity is exposed to water, leading to damp issues.
2. Polystyrene Beads are small, lightweight beads made from expanded polystyrene.
3. Urea-Formaldehyde Foam is foam that hardens into a solid mass within the cavity.
4. Polyurethane Foam is a type of plastic foam injected into the cavity.

Homes Commonly Found with Cavity Wall Insulation in the UK

Cavity wall insulation is predominantly found in homes built after the 1920s when cavity wall construction became more widespread. However, it is particularly common in homes built between the 1930s and 1980s. The typical homes that feature cavity wall insulation include post-war semi-detached and detached homes. These homes often have cavity walls designed to be filled with insulation to improve energy efficiency.

Council and social housing are another property that are often fitted with retrofitted with insulation, during the energy efficiency drives of the 1970s and 1980s.

Timber and steel framed homes, although less ideal for cavity wall insulation, have often been inappropriately insulated, leading to significant issues. You can read more about the effect of cavity wall insulation on these properties, here.

The Process of Cavity Wall Insulation Removal

While cavity wall insulation can be beneficial, problems can arise due to poor installation, unsuitable materials, or exposure to moisture. In such cases, extraction is essential to prevent further damage to the property.

At CavClear, we offer a specialised cavity wall insulation extraction service. Here’s how the process works:

1. Initial Survey
2. Preparation and Site Protection
3. Extraction Process
   • Drilling Access Points
   • Specialised Machinary Extraction
   • Inspection
   • Refill brickwork and seal
4. Final Inspection and Report

Cavity wall insulation removal is a delicate process that requires specialised equipment and expertise. Choosing an experienced service provider like CavClear ensures comprehensive removal. We guarantee that all insulation is removed, preventing future damp issues or structural damage. Our process is also designed to be as non-invasive as possible, protecting your property and minimising the time spent on-site. As well as this, we not only remove the insulation but also identify any underlying issues, such as wall tie failure or damp ingress, providing you with a complete solution.

Cavity wall insulation can offer great benefits, but when it goes wrong, it’s crucial to act quickly. Whether due to inappropriate materials, poor installation, or the natural degradation of materials, addressing these issues promptly can save you from significant damage and cost in the long run. CavClear’s specialised extraction service ensures that your home is protected, offering peace of mind and maintaining the structural integrity of your property.

If you suspect your cavity wall insulation is causing issues, contact CavClear today on 0333 220 2463 for an expert assessment and high-quality removal service. Unsure if you have insulation? Book your survey today!

The post The Types, Common Homes, and Removal Process of Cavity Wall Insulation appeared first on Cavity Wall Insulation Removal.

The Role and Importance of Wall Ties

Wall ties are embedded within the cavity wall and are responsible for:

1. Maintaining Structural Integrity: They hold together the two leaves of a cavity wall, preventing them from bowing or separating.
2. Distributing Load: Wall ties help distribute the weight of the building evenly, ensuring stability.
3. Preventing Moisture Transfer: Properly installed ties prevent moisture from crossing the cavity, protecting the interior from dampness.

Types of Wall Ties

1. Resin These types of ties are a modern solution designed to provide superior strength and longevity. These ties are often used in replacement projects where older, corroded ties have failed. The benefits of resin wall ties include:

• Corrosion Resistance: Resin is highly resistant to corrosion, making these ties durable even in harsh weather conditions.
• High Bond Strength: The resin material ensures a strong bond with both masonry leaves, enhancing the stability of the structure.
• Versatility: They can be used in a variety of building materials and conditions, making them a versatile choice for many projects.

2. Neoprene Neoprene ties are another innovative solution, known for their flexibility and durability. Key features include:

• Elasticity: The neoprene material allows for slight movements within the wall structure without compromising the bond, making them ideal for areas prone to thermal expansion or contraction.
• Vibration Damping: Neoprene ties can absorb vibrations and shocks, protecting the masonry from stress fractures.
• Weather Resistance: They are resistant to a wide range of environmental conditions, including extreme temperatures and moisture.

The Problem with Older Mild Steel Ties

Older mild steel ties, were once the standard in construction. However, the problems that come with this type of wall tie is typically 

• Corrosion: Over time, mild steel can corrode, especially if they are exposed to moisture for extended periods. This corrosion can weaken the ties, leading to structural instability.
• Structural Damage: Corroded ties can cause cracks and separation in the masonry, leading to significant structural damage.
• Moisture Penetration: If corroded ties deteriorate enough, they can allow moisture to penetrate the inner walls, causing dampness and mould.

Why Replacement is Essential

Regular inspections of wall ties are crucial, especially in older buildings. Replacing outdated and ineffective cavity ties with modern alternatives like resin or neoprene can prevent potential structural failures and maintain the safety and integrity of the property.

If you’ve noticed the signs of failing cavity ties, which you can read about here, you can book a CavClear wall tie survey today. Our expert surveys come with a full report and recommendations for remedial works, which may include wall tie replacement if necessary. 

Wall ties are a vital part of any cavity wall construction, and keeping them in good condition is essential for the overall stability of your building. For professional inspections, replacements, and advice, contact CavClear today, here.

The post Cavity Wall Ties: Types, Requirements, and Modern Solutions appeared first on Cavity Wall Insulation Removal.

The different types of bricks used within a property could be somewhat described as step 1 when it comes to construction, step 2 being the topic of today’s blog, Bonding! Bonding refers to the pattern in which the bricks are laid. Primarily, this is a vital aspect of construction as the bonding pattern used is done so to ensure a strong and stable structure.

Before we get into it, let’s just clarify some key industry terms relating to the bricks themselves. The term ‘stretcher’ refers to the long, rectangle face of the brick, and the ‘header’ refers to the square face of the brick. There are a multitude of ways that the stretcher and header can be laid, all of which can affect the strength, stability, and aesthetics of a property. This means deciding on a preferred style of bonding at the beginning of construction is crucial.

Bonding Patterns

Header Bond

A popular type of bonding during the 18th century, the header bond pattern uses a substantial number of bricks and is usually reserved for high-quality buildings or otherwise radial brickwork, as the headers faces can accommodate smaller radii. The header bond pattern often utilises contrasting brick colours, to contribute to the aesthetics of the building.

Stretcher Bond

The stretcher bond involves courses being laid as stretchers with the joint of one course falling midway between the joints of the courses below. In modern construction, the outer leaf of a building envelope is only half a brick thick, stretcher bond has become the most popular these days. Especially because it is both cost effective and time effective.

English Bond

A traditional form of bonding, English brick bond alternates between both the stretcher and the header courses, with the headers being centred over the stretchers underneath. This was commonly used until the end of the 17th century, making it the oldest bonding pattern. It is a strong form of bonding, so continues to be used for structures such as bridges and embankments.

Flemish Bond

Traditional Flemish Bond includes alternate stretchers and headers on every course, with headers centred over the stretchers underneath. Flemish bond superseded English Bond from the beginning of the 18th century, although English Bond is often found to be stronger.

English Garden Wall Bond

A decorative form of bonding, the English Garden Wall Bond has 3 courses of stretchers between every course of headers, often in a different colour. Laying stretchers uses less bricks than laying headers, although this also makes it less strong, this is why it is used in modest structures such as traditional wall gardens.

Stack Bond

Whether it be vertical or horizontal, stack bonds do not have the bricks overlap. This is a typically weak form of bonding and is typically used as a decorative laying pattern with its striking effects.

Wild Bond

Suited to its name, wild bonding refers to when the bricks are laid in a somewhat random formation, delivering a cobbled and authentically traditional appearance.

Considering all the different variations of bonding, it is clear that bricks can be laid in a variety of ways, whether it be as soldiers (standing upright), stretchers (laid lengthwise) or headers (laid width wise).

So, what do we understand about brick bonding patterns?

They distribute lots of bricks throughout the structure to achieve maximum strength.

The bonding patterns is vital to ensure stability.

The bonding pattern is a key factor in creating the aesthetic of a building.

How can we help?

Here at CavClear, we specialise in providing the UK a prompt cost-effective and friendly solution to removing all things Cavity Wall and Damp related! Our team are fully approved and accredited to provide you with an easy, effective and high standard of service.

What services do we offer?

• Cavity Wall Insulation Removal
• Cavity Wall Tie Specialists
• Damp-Proofing
• And More!

If you are concerned that there is an issue in your home that may be related to any of these, give us a ring for a no-obligation quote or report! Get in touch with our friendly team by calling 0333 220 2463 or contact us.

The post Bricks and Bonding appeared first on Cavity Wall Insulation Removal.

Just a note, if you would like to know more specifically about what goes in a cavity wall, whether that be Cavity Wall Insulation or Wall Ties, then check out our other blogs, here.

What is Cavity Wall?

A cavity wall is made up of two parallel levels of masonry, which are separated by a continuous air space, referred to as the Cavity.

There are 3 main parts within a cavity wall:
1. The outer leaf – the exterior of the wall.
2. The inner leaf – the interior of the wall.
3. The cavity – the continuous open-air space in between the inner and outer leaf.

The Construction

The outer leaf of the wall is generally a non-load bearing wall, and the thickness of it is typically half-brick. Contrastingly, the inner wall is always load-bearing, meaning the thickness should not be less than one brick.

Wall Ties are used to ‘tie’ the outer and inner leaf together, crucial to the safety and stability of the structure. You can read more about wall ties, here.

Back in the day, before wall ties, they used bricks turned on their side as a method to tie the brickwork leaves together… we will be discussing this in our next blog so stay tuned!

Types of Bricks

Bricks are produced using various manufacturing techniques, and for a variety of reasons. This means different bricks are suited to different jobs depending on the variation and style.

Facing Bricks

This is the most popular type of brick, becoming a popular material of choice in the UK housing market for thousands of years. Being used primarily on the external wall of a building due to both their weather resistant qualities and aesthetics. There are two main types of facing brick:

Soft Mud (Stock Bricks)

Soft mud bricks offer a somewhat traditional appearance, with a softer and warmer brick aesthetic, while still maintaining technical performance. Formed use a mould, these bricks are made using clay, which is then moulded and coated in sand.

Extruded Bricks

This type of brick is the most popular method of brick production, as they can be manufactured at a large volume (20,000 bricks per hour!). These are formed through clay being formed into a continuous column, and then cut into the appropriate ‘brick’ size using row wires.

These bricks are distinctive in their aesthetic, as they often have core holes running across the bed of the bricks, requiring less energy for drying, while also making them lighter and easier to be handled.

Engineering Bricks

These types of bricks are used primarily for their physical and technical strengths, rather than their aesthetic. Known for their high compressive strength and their low water absorption, they are the perfect option where strength and resistance to frost or water is a key factor to consider. Examples of this would include manholes, sewers, retaining walls and damp-proof courses.

Common Bricks

Common bricks are surprisingly the least common brick type in the UK… but why?
These bricks have lower compressive strengths than their counterparts and are a lower quality option. This means they are more typically used for internal brickwork, where weather and compression are not a factor.

Damp-proof course bricks

These bricks are designed specifically to have a low absorption rate, making them perfect for damp-proof construction. There are 2 classifications of Damp-Proof Course Bricks:

• DPC1 – Suited to external work use: maximum water absorption rate of 4.5%
• DPC2 – suitable for external only: maximum water absorption rate of 7%

There are a multitude of factors to consider in the construction of a building, or more specifically, a cavity wall. All these factors can contribute to the types of bricks used within a structure, and if done so incorrectly, may lead to issues relating to the cavity wall, cavity wall insulation, cavity wall ties, or damp!

How can we help?

Here at CavClear, we specialise in providing the Northwest a prompt cost-effective and friendly solution to removing Cavity Wall Insulation. Our team are fully approved and accredited to provide you with an easy, effective and high standard of service.
If you are concerned that your Cavity Wall Insulation has become ineffective, or is causing damp to your home, then get in touch now for a expert, no-obligation Cavity Wall Insulation Removal quote!
Don’t let the issue get out of hand… Get in touch with our friendly team by calling 0333 220 2463 or contact us.

The post Cavity Walls and Types of Bricks! appeared first on Cavity Wall Insulation Removal.