UK Construction Journal - Issue 1 - April 2026 - Flipbook - Page 49
an holistic, pragmatic and fabric first approach comes from
years of surveying experience incorporating thermography,
and managing the balance between preservation and
performance. This has led to the success of AirDrain - where
surveying expertise meets everyday simplicity and long-term
protection.
What is AirDrain?
AirDrain is specially engineered. The passive ventilation and
moisture management ‘C’ section chamber is installed in the
ground, around the periphery of a building and back filled
with pea shingle. It creates an air channel around the building’s
perimeter, allowing moisture against the wall to escape
through evaporation, whilst reducing thermal bridging and
additionally allowing ground gases to dissipate through the
principles of diffusion. Unlike traditional damp treatments that
focus on surface remedial treatment and physical intervention,
which can cause damage internally and externally,
AirDrain tackles the root cause. The result is drier walls, less
condensation, improved thermal efficiency, and a significant
reduction in the risk of mould and structural decay, without
spoiling the character of the home. AirDrain installations have
led to an average of 20% reduction in damp readings within
the first 6 weeks, post installation. Moisture levels continue
to reduce steadily in future years. AirDrain follows the core
principle of BS 6576:2005 by addressing dampness at
its source, by reducing moisture saturating walls from the
ground, before any invasive interventions are considered.
Focusing on the preservation of older buildings by adopting
Designed for listed properties
Because listed buildings are often restricted in terms of
alterations, the AirDrain was designed to accommodate
irregular walls, existing service pipes, and high ground levels,
while blending aesthetically with the surroundings. To date no
conservation officers have rejected the installation of AirDrain.
A healthier home, a smarter future
Beyond structural longevity, indoor comfort is improved and
continues to mitigate damp induced health issues caused by
mould and damp such as asthma, allergies, and respiratory
discomfort. By reducing cold bridging and moisture, your
home will stay warmer for longer, because drier walls are
warmer walls, consequently reducing heating
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UK CONSTRUCTION JOURNAL
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