Structural Waterproofing in London

Protect below-ground spaces from water ingress with SP Build Works. We carry out structural waterproofing across Greater London, particularly South and South West London, drawing on over 30 years of construction experience.

PROTECT WHAT LIES BELOW

A Dry Foundation for Usable Space

Basements, cellars and other below-ground areas are always in contact with the surrounding ground. Without the right protection, moisture and water ingress can damage finishes, affect comfort and limit how the space can be used.

SP Build Works works with homeowners, architects and engineers to discuss waterproofing requirements and how they fit into the wider project. We start by understanding the property, the condition of the existing structure and how you plan to use the space.

Whether you are planning a new basement, converting a cellar or dealing with damp in an existing room, speak to us about your property and priorities.

WHERE WATERPROOFING MATTERS

Protection for Below-Ground Spaces

Every waterproofing project starts with a different situation. Your plans could involve a new build, a conversion or improving protection in a space that is already in use.

Basement Construction

Plan waterproofing into a new basement from the start.

Cellar Conversions

Prepare an existing cellar for a practical new purpose.

Existing Basements

Address damp or water ingress in a space already in use.

Retaining Walls

Protect walls that hold back the surrounding ground.

Lightwells & External Areas

Consider how water is managed around openings and access points.

Before New Finishes

Get waterproofing right before floors, walls and fittings are installed.

THOUGHTFUL PREPARATION

Effective Waterproofing Starts With Understanding the Structure

No two below-ground spaces are the same. Ground conditions, the existing construction, access and how the finished room will be used all influence how waterproofing is approached.

We discuss your requirements and agree the scope before work begins. Where the project involves an architect, engineer or waterproofing designer, we work with their drawings and specifications to understand what is needed.

If you are also planning to refurbish the space, waterproofing can be discussed alongside our refurbishment service so the work is carried out in the right order.

OUR APPROACH

From Damp Concerns to a Protected Space

A clear scope and regular communication help keep your waterproofing project focused on what matters to you.

01.

Tell us about the space. Share your property location, photographs and any signs of damp or water ingress.

02.

Review the structure. We discuss the existing construction, access and practical requirements of the work.

03.

Agree the details. We agree the scope, programme and responsibilities so you know what is included.

04.

Complete the work. We carry out the agreed waterproofing, keeping you informed as the work progresses.

YOUR QUESTIONS ANSWERED

Structural Waterproofing FAQs

It is the protection of below-ground structures, such as basements and cellars, against water and moisture from the surrounding ground. The right approach depends on the property and how the space will be used.

Yes. Contact us with photographs, your property location and details of any damp or water ingress. We can discuss the condition of the space and what may be needed.

No. You can get in touch with your initial concerns or plans. Depending on the project, input from an architect, engineer or waterproofing designer may be needed before the work can be agreed.

Yes. We welcome enquiries from homeowners and their professional teams. Share your drawings and specifications so we can discuss the proposed scope.

Costs depend on the size and condition of the space, the ground conditions and the work required. Send us your project details so we can discuss what is needed to prepare a quotation.

We cover Greater London, with a particular focus on South and South West London. Contact us with your postcode to discuss your project.

LET’S DISCUSS YOUR PLANS

Ready to Take the Next Step?

Planning a basement, considering a refurbishment or looking for structural waterproofing? Speak to SP Build Works about your property and what you want to achieve.

We cover Greater London, with a focus on South and South West London. Call us to discuss your plans or send an enquiry with your project details.