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7/29/2019 Geo-Seal Retro Fit of High Performance Gas Vapour Barrier
1/1
RichardBrewer/ConstructionDirector/ReadieConstructionLtd./Unit15FalconBusinessCentre/AshtonRoad/
Romford/EssexRM38UR/Tel.+44(0)1708332800/www.readieconstruction.co.uk
GarethLeonard/DistrictManager/RegenesisLtd./TheTramshed/BeehiveYard/WalcotStreet/BathBA15BB/Tel.
+44(0)1225731446/www.regenesis.com
PlacingtheBONDLayer
FinishedSurfaceshowingBONDLayer
SealingaroundSteelStanchion
CASESTUDY:RetrofitofHighPerformanceGasVapourBarrier
FormerWarehouseRedevelopmentLondonU.K.
A2,000m2floorspaceofavacantbuildinginLondon,formerlyusedforwarehousingandstorage,wastoberedeveloped
intoanumberofstartupbusinesspremises.Duetothepotentialforingressofharmfulvolatilesfromcontaminatedland
belowthebuilding (highbenzenesoilconcentrations fromahistoricpaintworks
onsite)ahighperformancegasvapourbarrierwasrequiredtoprovideprotection
tothefuturetenantsofthebuilding.GeoSealwaschosenowingtoitsphysical
robustnessagainstpostapplicationdamage, seamless construction andeaseof
sealing around 111 steel stanchions and retrofit terminations. GeoSeal
comprisestwo integratedHDPE layersbondedtogetherwithacontinuousspray
applied latex copolymer asphalt core layer thereby providing three layers of
protectionagainst
vapour
intrusion
plus
resistance
to
damage
from
follow
on
constructionactivities.A fulldesign,productsupplyand installationservicewas
providedfortheGeoSealsystem,includinga20yearwarranty.
Duetothenatureofthebuildingandphasesofconstruction,GeoSealwas laid
bothaboveandbelowtheconcreteslablevelwithseveraldifferentterminations
required,including:
Sealingtoexistingwalls Sealingaroundstructuralsteelsupports111intotal Sealingaroundrebarandserviceductpenetrations Sealingaroundaliftshaft
Installing GeoSeal at the site eliminated the need to break up the slab and
undertakesoilremediationworks.
AbouttheGeoSealGasVapourBarrier
GeoSeal isthe idealblendofchemicallyresistantHDPEsheetandspray
appliedmembrane technologies, resulting, in themost appropriate gas
vaporbarriertechnologyusedtoeliminatevaporintrusiononBrownfields
or environmentally impaired sites. GeoSeal is a chemically resistant
materialplacedbetweenthesubgradeandbuildingfoundationtosealoff
exposurepathwaysandstopvapor intrusion intobuildings. Byselecting
GeoSeal, developers can ensure a healthy indoor environment while
reducingthecostofsiteremediationandexpeditingsiteconstruction.