Case Studies

photo 1 finished
Foamglass insulation and dranage channels
Awaiting Membrane Install
Leconfield Hall

Background: Leconfield Hall, Petworth is constructed using local stone (Bedham Greensand Stone) and brick. Some of the walls had been subject to water penetration, due to previous defects to the rainwater goods, which had lead to damage to the internal decorations, and possibly caused rot and decay to some of the embedded structural timbers.

How DrySide rectified the problem: In the worst affected and “at risk” areas, we exposed timbers for further professional inspection, and we were able to prevent further rot and decay to these timbers by careful application and installations of high performance, deep-penetrating, boron-based preservatives, avoiding the need for costly timber replacements.

The internal walls are plastered with a strong sand/cement render with finish plaster. From the pictures, you can see the water damage was extensive in some areas, but removal of all of the renders would have caused extensive damage to the greensand stone and stress on the buildings structure with enormous amounts of noise, vibration and dust throughout the building. We therefore installed a ventilated cavity drain membrane to the wall on top of the existing wall plaster and finishing with plasterboarding, mounted on to pre-treated timber battens and finish plaster. This allowed for final decoration within 2 weeks.

Sussex Barn

Background: A Sussex stone barn. The client required dry internal wall surfaces to the bedrooms at ground floor level that were suffering from rising damp. However, as the walls were constructed from local stone and brick, combined with a thickness of over 18 inches, it was questionable if a chemical DPC would be successful; and even if it was, it could take over 2 years for the residual moisture to dry out.

How DrySide rectified the problem: We installed a ventilated cavity drain membrane to the walls, followed by an independent dry lining system with a plaster finish, allowing the walls to be decorated just over 2 weeks after our works. Services such as electrics, as well as plumbing and heating pipes, were run between the cavity drain membrane and the dry lining system.

Reigate New-Build

Background: In Reigate, we were appointed to provide a hydrocarbon gas proof, and waterproof membrane to the basement flats of a new-build construction on the site of a former petrol station.

How DrySide rectified the problem: Note the sealing of the joists between the membrane and the surface mounted drainage channels. This project is not completed yet, and a layer of insulation, 2nd gas proof membrane, followed by boarding to the floor and independent dry lining finish to the walls, has yet to be completed.

Under-Pavement Vault

Background: An area beneath front steps and pavement is to be used as a meter cupboard/storage area, as well as housing the delicate alarm management unit to the house. The area was subject to severe water ingress whenever it rained. The existing underpavement area was excavated to improve the headroom, with underpinning to the walls.

How DrySide rectified the problem: We installed the cavity drain membrane system to the walls, floor, and ceiling, and finished the walls and ceilings with ply boarding to allow fitting of heavy items. A sump pump was installed in the underpavement area to discharge the ingressing water to the nearby drain. We used cavity drain membranes for this project, due to the vibration caused by the heavy traffic on the nearby road, and to cope with the differing wall construction that would require expensive flexible joint systems if cementitious waterproofing was used.

Retro Build Basement

Background: This project is a complete excavation under the whole footprint of an existing detached house.

How DrySide rectified the problem: This is a live project but at this stage we have installed a complete cavity drain membrane waterproofing system to the walls and floors of the basement followed by insulation to the floor and screed finish on top of the underfloor heating system. The walls are to be finished with an independent dry lining system by the main contractor following the installation and running of electric and communication wires as well as heating and plumbing pipes. Of special note on this project is the sump pump system capable of handling the discharges of grey water from washing machines, sewage, as well as the intrusive groundwater.

Damp Office Floor

Background: We were asked to control damp which has been affecting the floor of a basement office for over 5 years. The problem is that the office is in use 5 days a week.

How DrySide rectified the problem: The solution was for DrySide to install a sump pump, internal perimeter drainage channels, and apply a slim-line membrane system to the floor, with chipboard finish. The job took 2 days to complete over a weekend.