Waterproofing / Flood Project
This cob brick and flint cottage flooded nearly every year. Trial pits as shown in the photo revealed that the water table was just below the floor level.
A local drainage scheme was implemented to remove surface water.
The cavity drain system and drainage was installed to remove
water coming up through floors and the wall floor join and away to
pumps.
Many conservationists will argue against the use of modern
materials in historic buildings but given the opportunity to put
forward alternative methods to save this beautiful cottage from
further damage they were unable to present a single idea given the
severity of the problem.
The membrane is detailed so as moisture can evaporate unhindered
from the cob walls.
Historic wattle and daub walls were treated repaired and re
daubed with local soil and chalk daub then plastered with a lime
putty mortar.
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The client was refurbishing this very large country house. The
cellars flooded to 600mm deep every year.
The LSE qualified surveyor proposed the use of the Delta Cavity
Membrane system and drainage to sumps and pumps.
The Cavity Membrane system is becoming accepted by the market
leading companies such as LSE as the most reliable, cost effective
way to water proof in most below ground situations.
The walls of this cellar were soft brick work painted with lime
wash.
Any applied cement or epoxy system would have been too hard and
would not have bonded well to the soft substrate even with all of
the correct preparation.
Any form of tanking would have
caused stresses on the walls of the
cellar when the hydrostatic pressure
came to bare and this would have
lead to the failure of any such
system.
The cavity drain membrane system required very little preparation
and as it is mechanically fixed and not designed to come under water
pressure bonding is not an issue.
The walls were dry lined and plastered by the main contractors
plastering team who had been trained in the plastering of membranes
by LSE.
The water still rises around the basement every year but the inside
of the cellar is unaffected.
Because the system was installed by LSE, a qualified company, the
system is guaranteed for 10 years by the GPI insurance scheme which
is the only insured scheme available for water proofing. The
guarantee is renewable every 10 years if a service agreement is
entered into.
LSE are a leading water proofing specialist and Delta Membrane
system approved designers and installers covering London and the
South of England including: Hampshire, Wiltshire, Dorset,
Oxfordshire, Hertfordshire and surrounds.
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LSE Take the risk out of Waterproofing.....
Rivermead House
Axemans Cottage
Upton Lovell
Barley Moe
Winchester Basement
Shore Rd Poole
Sea Spray
Holland Park
Country House Cellar
