
Bay window subsidence
At the heart of our journey lies the trust of thousands of businesses worldwide, reflected in the numbers that drive us forward.
How to deal with bay window subsidence

If you suspect bay window subsidence is affecting your home, it’s important to get expert advice as soon as possible. Subsidence can lead to serious damage to your home, and dealing with it quickly will prevent the problem from getting worse.
Mainmark offers swift, non-invasive and reliable solutions for bay window subsidence. Our Teretek® resin injection technology and JOG computer-controlled grouting deal with the root cause of subsidence, helping return the charm and beauty to your bay window repair with minimal disruption.
As alternatives to mechanical jacking, underpinning and piling, our methods use surgical-like precision and address subsidence under your bay window. Our solutions can:
Improve the ground – Our methods effectively increase the load-bearing capacity of the ground
Lift and re-level – Injecting these materials under the foundations of your bay window will gently lift the entire structure and return it to level.
Fill in voids – This ensures stronger and more even support for the foundation.
Why is bay window subsidence a problem?

Bay windows are a charming architectural feature, but bay window subsidence can compromise the window’s integrity, affect your home’s aesthetics and be a safety hazard. Bay window subsidence occurs when the structure begins to sink, settle or shift. Poor foundation construction is one common cause of bay window subsidence in residential homes. This is due to a historical misconception that bay windows were lighter than other parts of a house; therefore, they were built with lighter foundations. Other possible causes of bay window subsidence can include:
Soil issues, such as erosion or shrinking caused by droughts or flooding
Nearby heavy traffic can create underground vibrations that affect the soil
Historic mining activities or fracking
Signs of bay window subsidence include cracks in the walls, floors, or window frames, as well as uneven window alignment, difficulty opening and closing windows and gaps between the bay window and the main structure.
If you notice any signs of bay window subsidence, the best course of action is to have your window checked by a specialist who can diagnose the problem and advise on the right solution for your home.
Technologies for dealing with bay window subsidence
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.

Teretek® – resin injection for treatment of bay window subsidence
Teretek® is an engineered solution for re-levelling subsided residential homes that can be used to treat bay window subsidence using a plural component, expanding polyurethane resin. Teretek® works in a way similar to keyhole surgery. Small holes are drilled under the foundation in order for Mainmark’s proprietary, environmentally inert resin to be injected under the house foundation, improving the stability of the ground and re-levelling the home.

JOG computer-controlled grouting for treatment of bay window subsidence
JOG computer-controlled grouting is a multi-point injection technique. This technology typically uses cementitious grout to re-level structures, including residential homes. It can be used to effectively treat bay window subsidence as the cementitious grout is injected under the foundations of your home, using computers to accurately control the injection amounts in the various predetermined locations.
Mainmark’s specialised in-house solutions
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.
Featured Case Studies
A diverse group of passionate professionals, each bringing unique skills and experiences to drive innovation and excellence in every project we undertake.
Benefits of Mainmark’s treatments for bay window subsidence
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.
Fast
Our technologies are installed quickly and can be walked on soon after.
Environmentally inert
We use safe materials that are non-toxic and do not leach into the environment or affect the treated area.
Non-invasive
Our solutions are surgical in nature, causing minimal disruption to you and your family.
Cost-effective
Compared to other solutions, our technologies cost significantly less and have fewer associated costs.
Get in Touch
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.

Bay window subsidence
At the heart of our journey lies the trust of thousands of businesses worldwide, reflected in the numbers that drive us forward.
How to deal with bay window subsidence

If you suspect bay window subsidence is affecting your home, it’s important to get expert advice as soon as possible. Subsidence can lead to serious damage to your home, and dealing with it quickly will prevent the problem from getting worse.
Mainmark offers swift, non-invasive and reliable solutions for bay window subsidence. Our Teretek® resin injection technology and JOG computer-controlled grouting deal with the root cause of subsidence, helping return the charm and beauty to your bay window repair with minimal disruption.
As alternatives to mechanical jacking, underpinning and piling, our methods use surgical-like precision and address subsidence under your bay window. Our solutions can:
Improve the ground – Our methods effectively increase the load-bearing capacity of the ground
Lift and re-level – Injecting these materials under the foundations of your bay window will gently lift the entire structure and return it to level.
Fill in voids – This ensures stronger and more even support for the foundation.
Why is bay window subsidence a problem?

Bay windows are a charming architectural feature, but bay window subsidence can compromise the window’s integrity, affect your home’s aesthetics and be a safety hazard. Bay window subsidence occurs when the structure begins to sink, settle or shift. Poor foundation construction is one common cause of bay window subsidence in residential homes. This is due to a historical misconception that bay windows were lighter than other parts of a house; therefore, they were built with lighter foundations. Other possible causes of bay window subsidence can include:
Soil issues, such as erosion or shrinking caused by droughts or flooding
Nearby heavy traffic can create underground vibrations that affect the soil
Historic mining activities or fracking
Signs of bay window subsidence include cracks in the walls, floors, or window frames, as well as uneven window alignment, difficulty opening and closing windows and gaps between the bay window and the main structure.
If you notice any signs of bay window subsidence, the best course of action is to have your window checked by a specialist who can diagnose the problem and advise on the right solution for your home.
Technologies for dealing with bay window subsidence
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.

Teretek® – resin injection for treatment of bay window subsidence
Teretek® is an engineered solution for re-levelling subsided residential homes that can be used to treat bay window subsidence using a plural component, expanding polyurethane resin. Teretek® works in a way similar to keyhole surgery. Small holes are drilled under the foundation in order for Mainmark’s proprietary, environmentally inert resin to be injected under the house foundation, improving the stability of the ground and re-levelling the home.

JOG computer-controlled grouting for treatment of bay window subsidence
JOG computer-controlled grouting is a multi-point injection technique. This technology typically uses cementitious grout to re-level structures, including residential homes. It can be used to effectively treat bay window subsidence as the cementitious grout is injected under the foundations of your home, using computers to accurately control the injection amounts in the various predetermined locations.
Mainmark’s specialised in-house solutions
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.
Featured Case Studies
A diverse group of passionate professionals, each bringing unique skills and experiences to drive innovation and excellence in every project we undertake.
Benefits of Mainmark’s treatments for bay window subsidence
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.
Fast
Our technologies are installed quickly and can be walked on soon after.
Environmentally inert
We use safe materials that are non-toxic and do not leach into the environment or affect the treated area.
Non-invasive
Our solutions are surgical in nature, causing minimal disruption to you and your family.
Cost-effective
Compared to other solutions, our technologies cost significantly less and have fewer associated costs.
Get in Touch
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.

Bay window subsidence
At the heart of our journey lies the trust of thousands of businesses worldwide, reflected in the numbers that drive us forward.
How to deal with bay window subsidence

If you suspect bay window subsidence is affecting your home, it’s important to get expert advice as soon as possible. Subsidence can lead to serious damage to your home, and dealing with it quickly will prevent the problem from getting worse.
Mainmark offers swift, non-invasive and reliable solutions for bay window subsidence. Our Teretek® resin injection technology and JOG computer-controlled grouting deal with the root cause of subsidence, helping return the charm and beauty to your bay window repair with minimal disruption.
As alternatives to mechanical jacking, underpinning and piling, our methods use surgical-like precision and address subsidence under your bay window. Our solutions can:
Improve the ground – Our methods effectively increase the load-bearing capacity of the ground
Lift and re-level – Injecting these materials under the foundations of your bay window will gently lift the entire structure and return it to level.
Fill in voids – This ensures stronger and more even support for the foundation.
Why is bay window subsidence a problem?

Bay windows are a charming architectural feature, but bay window subsidence can compromise the window’s integrity, affect your home’s aesthetics and be a safety hazard. Bay window subsidence occurs when the structure begins to sink, settle or shift. Poor foundation construction is one common cause of bay window subsidence in residential homes. This is due to a historical misconception that bay windows were lighter than other parts of a house; therefore, they were built with lighter foundations. Other possible causes of bay window subsidence can include:
Soil issues, such as erosion or shrinking caused by droughts or flooding
Nearby heavy traffic can create underground vibrations that affect the soil
Historic mining activities or fracking
Signs of bay window subsidence include cracks in the walls, floors, or window frames, as well as uneven window alignment, difficulty opening and closing windows and gaps between the bay window and the main structure.
If you notice any signs of bay window subsidence, the best course of action is to have your window checked by a specialist who can diagnose the problem and advise on the right solution for your home.
Technologies for dealing with bay window subsidence
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.

Teretek® – resin injection for treatment of bay window subsidence
Teretek® is an engineered solution for re-levelling subsided residential homes that can be used to treat bay window subsidence using a plural component, expanding polyurethane resin. Teretek® works in a way similar to keyhole surgery. Small holes are drilled under the foundation in order for Mainmark’s proprietary, environmentally inert resin to be injected under the house foundation, improving the stability of the ground and re-levelling the home.

JOG computer-controlled grouting for treatment of bay window subsidence
JOG computer-controlled grouting is a multi-point injection technique. This technology typically uses cementitious grout to re-level structures, including residential homes. It can be used to effectively treat bay window subsidence as the cementitious grout is injected under the foundations of your home, using computers to accurately control the injection amounts in the various predetermined locations.
Mainmark’s specialised in-house solutions
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.
Featured Case Studies
A diverse group of passionate professionals, each bringing unique skills and experiences to drive innovation and excellence in every project we undertake.
Benefits of Mainmark’s treatments for bay window subsidence
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.
Fast
Our technologies are installed quickly and can be walked on soon after.
Environmentally inert
We use safe materials that are non-toxic and do not leach into the environment or affect the treated area.
Non-invasive
Our solutions are surgical in nature, causing minimal disruption to you and your family.
Cost-effective
Compared to other solutions, our technologies cost significantly less and have fewer associated costs.
Get in Touch
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.