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Structural Waterproofing Specialists Marlow
Barker Morris is a Chartered Building Company exclusively specialising in structural waterproofing design and installation. Established by industry veterans David Barker and Patricia Morris, we combine decades of expertise with a commitment to technical excellence. Our team includes professionally qualified managers and certified specialists with extensive practical experience in waterproofing systems. As one of the UK's only Chartered Building Companies focused solely on structural waterproofing, we deliver reliable solutions for architects, contractors, and private clients.

Our approach integrates early-stage design consultation with strict adherence to British Standards, including BS 8102:2009. We maintain independence from material manufacturers, ensuring objective specification of the most appropriate systems for each project. With comprehensive insurance coverage and a focus on staff training, we provide both technical consultancy and full installation services. Our track record includes prestigious projects across London and the South of England, supported by ongoing advisory contributions from industry pioneer Keith Thomas.
Services
Basement Waterproofing Waterproofing Design Cavity Drain Membranes Pressure Grouting Remedial Waterproofing Technical Consultancy Construction Management
Highlights and features
  • We are the UK's only Chartered Building Company specialising exclusively in structural waterproofing
  • Our team includes MCIOB and CSSW certified professionals with decades of industry experience
  • We maintain strict adherence to BS 8102:2009 and other relevant British Standards
  • Independent material selection ensures optimal solutions for technical and economic requirements
  • Comprehensive insurance coverage including professional indemnity and public liability
Associations and certifications
  • Chartered Institute of Building
Services
Basement Waterproofing
Design and installation of comprehensive waterproofing systems for basement extensions. Our solutions include cavity drain membranes and cementitious coatings that create habitable spaces below ground level. Systems are specified according to BS 8102:2009 standards and project-specific requirements, ensuring protection against water ingress while maintaining healthy living environments.
Waterproofing Design
Specialist design consultancy for structural waterproofing projects. Our chartered professionals assess site conditions, intended usage, and performance requirements to specify optimal systems. Services include early-stage design input, material selection, and compliance with British Standards, ensuring effective long-term protection against groundwater ingress in new and existing structures.
Cavity Drain Membranes
Installation of high-performance cavity drain membrane systems for below-ground structures. These systems manage water ingress through controlled drainage rather than pure resistance. Our solutions incorporate sump pump installations and drainage channels, particularly suitable for retrofit applications where external waterproofing may not be feasible, ensuring long-term structural integrity.
Pressure Grouting
Specialist pressure grouting for remedial waterproofing of existing structures. This technique involves injecting sealants into cracks and joints under pressure to create watertight seals. Ideal for repairing concrete structures and masonry walls, our methods restore structural integrity while preventing future water penetration in challenging subterranean environments.
Technical Consultancy
Comprehensive technical support for waterproofing projects, including material specification, system design, and compliance verification. Our chartered professionals provide independent advice without manufacturer affiliations, ensuring objective recommendations. Services extend to project management, quality assurance, and expert witness testimony, supporting architects, contractors, and property owners throughout the construction process.
People
Dean Tennant
Managing Director
MCIOB and CSSW qualified with extensive practical experience in structural waterproofing. Progressed from surveying roles to leadership position, maintaining company's core principles while driving technical innovation and operational excellence.
Keith Thomas
Technical Advisor
Industry pioneer with approaching fifty years' experience in structural waterproofing. Now operating in an advisory capacity, continues to influence policy decisions and technical direction while mentoring the next generation of waterproofing specialists.
Robert Campbell
Contracts Manager
CSSW qualified professional with supervisory experience. Transitioned from operational roles to contracts management, combining practical knowledge with organisational skills to ensure efficient project delivery while maintaining health and safety standards.
Scott Roberts
Estimator/Surveyor
CSSW qualified surveyor with background in allied industries. Specialises in cost estimation, technical surveying, and health and safety compliance. Plays key role in project scoping and client communication while maintaining rigorous safety standards.
Questions
What areas do Barker Morris cover for waterproofing services?
We operate throughout the South of England with particular focus on London and the Home Counties.
Are Barker Morris qualified to provide structural waterproofing solutions?
Yes, we are a Chartered Building Company with MCIOB and CSSW certified professionals on staff.
What types of waterproofing systems do you work with?
We specialise in multi-coat renders, cementitious coatings, cavity drain membranes, and pressure grouted systems.
Can you assist with both new builds and remedial waterproofing?
Yes, we provide solutions for new construction projects and remedial works for existing structures.
Do you offer design consultancy services?
Yes, we provide early-stage waterproofing design consultancy in accordance with BS 8102:2009 standards.
Are your waterproofing solutions guaranteed?
All our work is guaranteed against water ingress when installed to our specifications and standards.