Mainmark UK

26/10/2026

What causes bay window subsidence?

If you're noticing cracks in walls, floors or around the window frame, along with windows that are difficult to open or close, these can all be early signs of movement and bay window subsidence.

These signs can be caused by soil conditions, vibrations from the surrounding area or even historic mining activity or fracking in the area.

Get in touch with our team if you are concerned, as a professional inspection can help you identify the issue and recommend the best next steps.

Read more in our helpful guide:
https://mainmark.co.uk/technical-blog/what-causes-bay-window-subsidence?utm_source=Facebook&utm_medium=Organic_social&utm_campaign=May+26+-+Bay+window+subsidence

21/10/2026

Noticing lifting floors, protruding walls or cracks after heavy rainfall? Perhaps had a recent tree removal too?

You may be experiencing ground heave.

This is the upward movement of the soil beneath a property, often caused by expanding soil that applies upward pressure.

When looking to treat this issue, some of the most common treatments include improving drainage and reinforcing foundations.

At Mainmark, we offer a range of non-invasive methods that treat various ground-related issues without extensive excavation or rebuilding.

Read more about what ground heave is and the possible signs and treatments in our blog -

Ground heave is the upward movement of the soil beneath a property, which differs from subsidence. Learn about ground heave, what causes it and how it is different.

18/10/2026

Should you buy a home with subsidence?

It really depends on whether the subsidence is historic, or active.

A home with historic subsidence that has been dealt with years ago and has proof of repair is often mortgageable and manageable.

Active subsidence cases can be a different story. These properties are often more difficult to mortgage and expensive to insure.

When viewing properties, make sure to look out for cracks wider than 3mm or windows that are jamming. Fine hairline cracks are usually house settlement, but a good rule of thumb is not to fully rule them out. Make sure you get specialist advice before you sign anything.

Read our full guide on buying a property with subsidence here: https://mainmark.co.uk/technical-blog/should-you-buy-a-house-with-subsidence?utm_source=Facebook&utm_medium=clicks&utm_campaign=blogjuly26

17/10/2026

Great to see Freya Chapman, our Residential Lead, featured in this Financial Times article, sharing her expertise on the growing impact of climate-related subsidence across the UK.

The article explores how increasingly extreme weather is contributing to foundation movement, rising insurance claims and growing challenges for UK homeowners. Freya also discusses how modern ground engineering techniques are providing alternatives to traditional underpinning, helping address property movement with less disruption.

As changing ground conditions continue to affect more properties, raising awareness and helping homeowners understand their options has never been more important.

Read the article: https://www.ft.com/content/3ace7245-3505-474c-9518-b3d5ae5d1a33

The hottest summer on record has played havoc with house foundations — experts predict insurance claims rising even more than last year’s surge. And El Niño could compound things further

12/10/2026

It was great to be back at The National Self Build & Renovation Centre | B Corp™ (NSBRC) in Swindon last week. Thanks for the warm welcome and to everyone who stopped by to chat about their new build projects.

One of the highlights was Technical Sales Engineer, Adam Fleet's presentation, "Building on Solid Ground", which explored why ground investigations should be one of the first considerations in any building project. Understanding ground conditions early can help avoid unforeseen issues, inform foundation design, and reduce costly changes later in the build.

If you didn't get a chance to catch up with us, you'll find Mainmark at our permanent stand, Stand 25. Simply scan the QR code for more information or to speak with one of our experts.

15/09/2026

🎥 A day in the life at Mainmark...

Ever wondered what a summer engineering work placement looks like? Follow Joud as she spends a day with our engineering team, from creating AutoCAD drawings to carrying out on-site floor level surveys using a ZipLevel®.

We're proud to support the next generation of engineers and provide hands-on experience that helps build skills, confidence and careers.

14/08/2026

If you have noticed cracking, sinking or uneven areas on your driveway, particularly during the hot weather, you may be experiencing subsidence.

Driveway subsidence can be caused for a number of reasons such as problems with the initial construction of the driveway, extreme weather conditions and heavy traffic on nearby streets.

Dealing with this issue can make access to your home difficult, so treating the root cause as soon as possible is key.

At Mainmark we offer driveway re-levelling treatments, supporting the ground underneath, and making it more reliable for your vehicles.

If you are noticing signs of subsidence, please contact our technical experts: https://mainmark.co.uk/who-we-are/contact-us/?utm_source=Facebook&utm_medium=organic_social&utm_campaign=august+26+-+driveway+-+subsidence

07/08/2026

🎉 We're thrilled to announce that Mainmark Ground Engineering has been shortlisted for Best Place to Work – Small Firm at the CN Workforce Awards 2026!

This recognition celebrates our people, our culture and our commitment to creating a workplace where everyone can grow, succeed and make a real impact.

A huge thank you to our fantastic team for making this possible. 👏
Congratulations to all the shortlisted organisations, and good luck in the next stage of judging!

28/07/2026

A leaking drain might not seem like a big deal, but it can cause real problems underneath your property.

When water soaks into the surrounding ground, the soil can begin to soften and lose its strength. In turn, the foundation beneath your home can start to give way.

The result of this is movement, cracking, and in some cases, subsidence.

Often, you won't notice anything until signs of subsidence show up in your house: cracks, gaps widening, or doors and windows that begin to stick.

If you are noticing these signs, then get in touch with us for a consultation: https://mainmark.co.uk/who-we-are/contact-us/?utm_source=Facebook&utm_medium=clicks&utm_campaign=contact_us_uk

22/07/2026

Is living with subsidence dangerous?

Spotting a big crack in your home can be concerning, especially when you don't know the cause or what the best fix is.

Although not all subsidence poses an immediate risk, in some cases it needs to be addressed sooner rather than later.

If movement does continue, it can cause even more damage to your property over time, with more noticeable cracks affecting walls, floors and openings.

A professional technical assessment can help determine the issue and identify what, if anything, needs to be done.

See here to book a subsidence assessment: https://mainmark.co.uk/subsidence/subsidence-survey/?utm_source=Facebook&utm_medium=clicks&utm_campaign=book_survey_uk