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Property Damp Proofing & Timber Preservation in London

Also serving Hertfordshire, Essex, Bedfordshire & Cambridgeshire

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Basement Conversions

Basement Conversion... is the process of Damp Proofing and Tanking the basement of your property, which can increase the value of your home or business premises. Creating additional space in this way is a good investment, especially in densely populated areas like London & Essex where it can be difficult to upgrade to a larger home or find the space to add an extension.

Do you have an unused basement beneath your home that could be turned into a living room, playroom or even a wine cellar? Perhaps you’ve already decorated the space and found it’s now taking in water?

Any structure below ground level can suffer from lateral penetration of water. Moisture in the surrounding soil and the resultant hydrostatic pressure forces water through any tiny crack or gap in the brickwork. This ingress causes the basement area to become damp - which can cause mould and structural damage – making the area unusable.

We carry out basement conversions, tanking and waterproofing in properties across London and the surrounding counties such as Essex, Hertfordshire, Bedfordshire and Cambridgeshire, enabling you to protect your home or business premises from damp - while providing extra space without having to move or build an extension.

What Is Basement Tanking?

The materials used to build your property are not naturally waterproof and will let in moisture when in constant direct contact with it. Without cellar tanking, moisture from the surrounding soil will be drawn into the brickwork or concrete, and emerge on the interior of the wall before evaporating.

This causes the walls to feel damp, and the overall humidity levels inside the basement to rise. When we tank the basement of a property we use either a cementitious or cavity membrane system, to create a waterproof barrier that prevents this ingress of water.

Prevention Measures

Before you call us to arrange a survey, make sure you have eliminated all obvious drainage problems first.

Keep your gutters clear, and make sure downspouts are discharging directly into a drain or well away from the house. Ideally the ground level should slope away from your property to encourage water to drain away from the basement.

If your basement is still damp after taking these preventative measures, it’s time to call the professionals.


Basement ConversionsBasement Conversions


Peter Hodge and his specialist experienced team at London & Home Counties Timber Preservation Ltd are here to assist you throughout the process of ensuring the woodworm treatment & timber preservation, basement conversion, insect infestation and/or damp proofing in your home is looked after by only the very best in their profession. The London & Home Counties team are a collective of highly experienced specialist tradesmen who work expertly in all areas of Central London & Greater London and the Home Counties including Bedfordshire, Cambridgeshire, Essex and Hertfordshire.

Your property is home to your family and naturally you want this environment to stay a healthy place for them to grow and thrive, you also want the value of your property to be maintained and grow too! This is very important to you so you need to feel that you are being served by people who have a love for looking after your home as much as you do. Every aspect is taken care of with the greatest respect, sensitivity, honesty and efficiency to ensure any disruption to your home remains at a minimum to get your work completed speedily, returning you back to the enjoyment of your newly improved home in harmony.

Here's a fascinating inside look into one of our very latest projects, our growing vlog is the best place to start get a first-hand view of how professionally we work and how well we treat your home. Be sure to come back here daily to catch the latest progress...


Welwyn, Hertfordshire

Basement Conversion
Start Date: 14 Feb 2022








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