Damp Proofing Vauxhall

Vauxhall sits on the south bank of the Thames at the foot of Vauxhall Bridge, between Nine Elms and Kennington. It is one of the fastest changing parts of London, with new towers along the river standing a few streets away from Victorian squares, post war estates and the railway viaduct that carries trains into Waterloo.

Much of Vauxhall was marshy riverside land until the eighteenth and nineteenth centuries. Buildings near the river stand on alluvium and Thames gravels over London Clay, and the water table is close to the surface. The lost River Effra, now running in a culvert, reaches the Thames near Vauxhall Bridge, and low lying ground along its old course can stay wet for long periods.

The older housing includes Victorian terraces around Fentiman Road and the streets towards Kennington and Stockwell, the garden square at Bonnington Square, and pockets of earlier houses. These have solid brick walls, suspended timber floors and slate damp proof courses that are now well past their best.

Typical faults in these houses are rising damp in front and party walls, damp proof courses bridged by raised front gardens or paving, and penetrating damp from worn pointing, cracked render and leaking parapet gutters. Cement render and gypsum plaster from past refurbishments often hold moisture in the wall and make the damp look worse than it is.

Timber suffers too. Damp in a suspended floor void, often from blocked air bricks or a raised patio, leads to wet rot in joists and skirtings, and we check floor voids as part of every survey.

Lower ground floors and cellars are common, and with the water table so close, they are prone to seasonal water ingress. Converting them into living space needs a waterproofing system, usually a cavity drain membrane with a sump and pump, designed to BS 8102:2022 for the wettest months.

Vauxhall also has a large number of commercial units in the railway arches. Water runs through the brick arches from the track above and through the back walls, so arch units often suffer from dripping, damp walls and standing water. We design waterproofing for arch units so they can be used as dry workshops, offices or hospitality space.

In the post war estates and the new riverside towers, the most common problem is condensation and black mould. Sealed windows, limited extract ventilation and laundry dried indoors push humidity up, especially in bedrooms and around window reveals. The fix is ventilation and humidity control, not damp proofing.

Many homes here are leasehold flats where the source of damp sits in a shared wall, roof, balcony or drain. Our reports are written so they can be passed straight to a managing agent or landlord, showing where the water is coming from and which repairs fall outside the flat.

With damp coming from the river, the railway, the weather or the way a flat is used, the survey always comes first. Our CSSW and CSRT trained surveyors take moisture readings, use thermal imaging where it helps, and check drainage, pointing, ground levels and ventilation before recommending anything. You get a written report with photos that explains the cause in plain language and sets out the fix, with no obligation.

We cover SW8 and the neighbouring parts of SE11, including Vauxhall Cross, Nine Elms, Bonnington Square, Fentiman Road, the Oval and the streets towards Kennington and Stockwell. Surveys are arranged from our London office at 45 Fitzroy Street.