Cook Group Ltd is a specialist structural waterproofing and ground gas protection company, based in Hull, East Yorkshire. We have been trading with the same company registration number since 1974 and are still owned by the same family that started the company. We have an in-house CSSW qualified design team that can design a waterproofing system to suit any requirement. We are also highly experienced ground gas protection installers, with all of our operatives either qualified or working towards NVQ level 2 in ground gas protection measures. Cook Group Ltd are long-standing members of the Property Care Association and our Managing Director Dave Cook is also a PCA registered Waterproofing Design Specialist. OUR SERVICES Structural Waterproofing & Ground Gas Membranes We offer a full design and install service for both new build applications and existing structures. Combined waterproofing and ground gas installations are our speciality. Lift pit Waterproofing We operate nationally for our lift pit waterproofing service, the unique processes we use for this service were designed inhouse by Cook Group. Helical beam repairs We offer a full structural repair service from installing masonry beams above windows to restraining earth retaining walls.