SW Build Ltd

SW Build Ltd

Waterproofing, Basement Conversions & Screeding Specialists in Bristol

SW Build helps homeowners, developers and contractors investigate problems, plan specialist work and deliver the right solution for their building. Our Bristol-based team works across Bristol, Bath and the surrounding region, with larger projects considered further afield.

Explore our structural waterproofing, Bristol basement conversions and floor screeding services, or tell us about your property and the work you are planning.

Expert Design

We help establish a practical specification, from the initial investigation through to installation and maintenance. Contact us to discuss your project, the surveys needed and the scope of design work.

Quality workmanship

Through thoughtful design, effective management, continued professional development, and experienced installation, safety and quality are held to the highest standards.

Ongoing support

We offer a turnkey service, design, installation, and maintenance ensuring your products and systems continue to protect as they were designed

Our Services

We’re fully qualified to design, supply and install structural waterproofing systems, from the roof down to basement level, for both existing buildings and new build structures. And, as our surveyors are CSSW qualified and listed on the Waterproofing Design Register, and we hold full professional indemnity insurance, we give you peace of mind.

Structural Waterproofing

Flood Protection

Through collaboration with the most innovative consultants and manufacturers in the Flood Mitigation market, SW Build are able to offer a solutions based comprehensive service. Whether it is specifying and supplying the right products to our clients or a full installation and maintenance package, SW Build can help with a range of solutions to meet every opportunity.

Damp Proofing

Damp Proofing is a general term used to describe methods and treatments of controlling moisture that has built up within walls and floors into the interior of the property. It is important to have damp proofing specialists to tackle your damp problem, from the failure of a damp proof course (DPC) to high levels of water ingress and every other type of dampness.

Floor Screeding

We design, supply and install screeding for floors and roof levelling, matching the specification to the substrate, finish and programme. Explore our screeding services and see our 1,000+ m² Newbury roof screeding project.

⁠Underfloor Heating

At SW Build Ltd, we are proud to serve as top quality wet underfloor heating suppliers and installers across the whole of the UK, finishing each flooring project with different types of screed upon request. Whether you have a commercial or domestic project in need of our services, we will be fully prepared to provide everything you need. 

Single Ply Roofing and
Deck Waterproofing

We provide single ply roofing and deck waterproofing for new construction and refurbishment projects. The specification takes account of the substrate, drainage, detailing and intended use of the roof or deck.

Basement Conversions

At SW Build Ltd, we specialise in high-quality basement conversions, helping homeowners and businesses unlock the full potential of their properties. With years of experience transforming unused or underutilised basements into functional, stylish, and valuable living spaces, our team delivers bespoke solutions tailored to your needs.

Cavity Drainage Systems

At SW Build Ltd, we specialise in the supply and installation of cavity drainage systems — a proven method of managing water ingress in basements and below-ground structures.

Our expert team works with both residential and commercial clients, providing tailored solutions that keep properties dry, safe, and protected from damp issues.

Tanking Render Solutions

At SW Build Ltd, we provide expert tanking render solutions to protect properties from water ingress and damp issues. With years of experience in structural waterproofing, our team applies high-quality tanking systems designed to create a robust, waterproof barrier for walls and floors.

Ideal for basements, cellars, and below-ground structures, our tanking renders help keep your property dry, safe, and protected.

Recent projects: see how we approach the work

Quick-drying roof screed beside Newbury Racecourse

Design, supply and installation of bonded roof screed across a first phase of more than 1,000 m², preparing the roofs for a fully adhered roofing system. Read the Newbury screeding case study.

Damp treatment in Redland, Bristol

An assessment of a lower ground floor helped the owner choose an agreed damp-control specification before refurbishment. Read the Redland damp-proofing case study.

Waterproofing a partially retaining lower ground floor

Investigating water ingress in a Victorian terrace and installing a combined waterproofing system while retaining head height. Read the basement waterproofing case study.

Tell us about your project


SW Build Ltd place picture
5.0
Based on 6 reviews
Always a top job carried out by Neil & team - nothing is too complex for these guys, and they will deliver a quality result for you.
Tyler Hearne profile picture
Tyler Hearne
2 years ago
Provided a great service, Neil responded instantly to an email which was followed up by a quick phone call covering everything I needed to know before taking on the work. The work done was also of great quality and was efficient
dan f profile picture
dan f
2 years ago
Neil responded quickly to my initial enquiry and was on site within days. Neil provided a plain English explanation of what needed to be done and the issue was resolved promptly. To date I have had no further water ingress. Would strongly recommend.
Oliver Spriggs profile picture
Oliver Spriggs
2 years ago
SW Build were excellent, they gave me solid advice upfront, were on time and well within budget, quite rare these days!
Roy Birley profile picture
Roy Birley
2 years ago
Fantastic job. No messing about, they came when they said and did what they promised. First class service and a first class job, even though we gave them some problems to overcome. We’ll done Neil and the boys, we will certainly use you again.
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