Our clients wished to convert their basement into a gym and instructed us to proceed with the structural waterproofing design and installation. We duly liaised with Architect Andrew Bellas who drew up the plans.
However during an early site visit we noticed that previous owners had excavated the soil from beneath the Victorian footings of this three storey property. We advised our client that this would need to be corrected and the foundations stabilised before any structural waterproofing works could begin. We contacted Chris Simms, Structural Engineer with Peak Engineers, who drew up the specification to stabilise the foundations. This involved the installation of a reinforced concrete floor slab and a substantial upstand around the base of the walls.
Once this remedial work had been completed the structural waterproofing element could begin incorporating a retro-fit Type C Cavity Drained System. The final stage involved installing the membrane on the walls at which point we contacted Quadrant, Approved Inspectors Building Control, to approve the works. Our client now has the extra space they needed in the knowledge that the work comes with an industry-recognised guarantee and has been carried out in line with BS8102 (2009) Code of Practice for the Protection of Below Ground Structures Against Water from the Ground.Derby Derbyshire
Waterproofing With Sump and Pump
We were called out to offer a solution to a cellar which was damp due a water leak. There was a visible trickle of water entering the cellar but the local water authority had been unable to trace the source and could not stop it. Our client needed to use the space for storage so it had to be dry.
We recommended the installation of a retro-fit Type C System incorporating a perforated sump and pump system working every 20 minutes to manage the water ingress. The walls were then fitted with a membrane, dry-lined and plastered and a membrane was installed on the floor which was finished with timber flooring. The result for our client is that whilst the leak remains we have been able to control it in order to create the dry space he needed.Baseford Nottinghamshire
New Build Basement Design
We were contacted by a building contractor in Derbyshire recently to assist with the structural waterproofing design for a new build home with three walls partially below external ground levels.
We worked closely with the Chartered Surveyor on site and recommended that they install a Type A system involving a waterproof barrier in the form of a liquid applied membrane and bonded sheet membrane. Internally we recommended a Type C Cavity Drained System. This ensured that the work was carried out in line with the National House Building Council Chapter 5.4 guidelines.Chesterfield Derbyshire
Buried Roofs and Podium Decks
We were contacted by a building contractor carrying out construction work on a property in Leicestershire. Work had come to a standstill whilst they sought specialist help to determine a viable waterproofing solution for the driveway above the basement to ensure a dry environment for the rooms below.
Our client in Stoney Middleton owned a stone cottage where a woodworm infestation in the form of common furniture beetle (Anobium punctatum) was discovered. On arrival on site site we vacuumed the treatment area to remove debris and dust to allow full access to the timbers and limit dust borne contamination.
The exposed timbers were then sprayed on all sides with a permethrin-based micro-emulsion wood preservative concentrate. Warning cards were left on site to ensure no one assessed the treated areas for 1 hour in line with the manufacturers instructions. The treatment comes with our 10 year guarantee.
Cellar conversion to study, utility and toilet
Our clients in Sheffield wanted to convert their cellar space into a study, utility and toilet. We recommended a Type C Cavity Drained Protection System including the following specifications:
- Drainage channel on the perimeter floor leading to a point of removal via a gravity system.
- Application of 8mm membrane to external walls and 8mm mesh membrane on the internal walls
- Metal studwork and galvanized dry lining system including thermal insulation on the external walls.
- Membrane applied to the stairs.
- All walls to have a plaster finish.
- Floor finish to include a membrane and an 18mm Weyroc Protect (chipboard) float floor
- Our clients were delighted with the results and kindly sent us photos of the finished product
Sheffield South Yorkshire