Recently we provided a FREE OF CHARGE survey report for a large basement below a retail unit. With multiple rooms it was for the main part in good order and dry throughout however one wall to the front elevation had proven problematic over the years and at one point tanking slurry had been applied and a stud wall constructed.
On our inspection we found evidence of a number of repair attempts which according to the client had not been succesful, we provided a specification with a fixed cost which was accepted and works commenced at a convenient time to the occupant. Due to logistics and cost the client requested that works were confined to the problem wall and that studwork was again constructed to match in with the rest of the rooms walls.
The wall was exposed and previous repair materials removed, Vandex Plug was used to seal any obvious holes and around utility entry points. A sand/cement render was then applied to the wall and approximately 300mm into both floor and ceiling this is always our prefered starting point whenever using tanking slurry as it gives a solid base to work from allowing waterproofing materials to be applied consistently and diligently. Two coats of Vandex BB 75 EZ were then applied, this is an elasticized waterproofing slurry, we chose this as previous works and repirs had been completed with a standard slurry which has no flexibity and will crack given any structural movement.
Once materials had dried we constructed a new studwork wall and inserted vents into the plasterboard as tanking slurry can attract condensation and the provision of airflow will prvent any 'musty' smells.
Basement waterproofing is a complex process and can involve a number of methods from cavity drain membranes and sump/pump chambers to the application of tanking slurrys and waterproof renders. If you have issues or simply want to see if converting a basement or cellar into a dry living space is viable then give us a call today, surveys and qutations are free of charge as is our advice.