Langley TA-20 Flat Roofing System

Langley TA-20 Flat Roofing System

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The object content is configured for use in UK, but it may also be suitable for use in other locations.

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Langley TA-20 System is suitable for new build or refurbishment projects (where conditions allow, existing systems can be overlaid, avoiding costly strip-ups).

  • Durability: extremely robust-yet-flexible roof covering with puncture resistance for maintenance traffic. Heavy duty polyester composite metal lined vapour barrier to provide a robust, watertight layer.
  • Resistance: TA-20 membranes are covered by MOAT 31 (Reinforced Homogonous coverings of SBS Elastomeric Bitumen).
  • Lifespan: a long-term waterproofing solution with a life expectancy in excess of 40 years.
  • Installation: can only be installed by Langley-approved contractors to ensure that product quality is maintained. All Langley elastomeric membranes have been developed in accordance with the European Union of Agrément (UEAtc) and are manufactured and tested in accordance with UEAtc MOAT special directives (Methods of Assessment and Testing).
  • Guarantee: the TA-20 System carries a 20-year independently insured guarantee for both materials and workmanship.
Platform Compatible Version Certified to
IFC IFC - 1 2.0
Revit Revit 2016 + 1 2.0

  • Properties and values
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Properties and values

IFC
IfcExportAs
IfcCoveringType
IfcExportType
ROOFING
COBie
BOS_General
NBS_Data
Adhesion
>0.4 Mpa
Application
Torch applied
BitumenModification
SBS-modified elastomeric bitumen
CharacteristicsViscosityMaximum
n/a
CharacteristicsVolatileSolventContentMinimum
60% by mass
Class
n/a
ColdPliability
≤ -20°c
CompressiveStrengthAt10Deformation
150 kPa at 10% compression
CrossSection
Uniform thickness as standard, also available tapered
Density
0.925 g/mL
DetailWorkAncillaryItems
n/a
DetailWorkCoverStrips
Parafor Solo GS Cap Sheet
DetailWorkFlashings
Parafor Solo GS Cap Sheet
DetailWorkSkirtingsAndUpstands
Parafor Solo GS Cap Sheet
DetailWorkWeltedDrips
Parafor Solo GS Cap Sheet
DryingTime
2 hours at temperatures >12°C
Edges
Square
ElongationAtBreak
≥ 30%
EnvironmentalProductDeclaration
n/a
FaceSizeLengthXWidth
1200 x 60 mm
Facing
Wet lay coated glass fibre tissue
Impermeability
n/a
InsulationFixing
n/a
InsulationThickness
140
InsulationType
Parafoam Ultra PIR Insulation
LapWidthMinimum
75 mm
MaterialBitumenModification
SBS-modified elastomeric bitumen
MaterialCarrierMaterial
Aluminium/polyester composite and glass mat
NailTearResistance
> 150 N
OverlayFixing
n/a
OverlayType
n/a
PerformanceRequirement
n/a
Permeability
n/a
PreparationExistingSubstrates
n/a
PreparationHorizontalWork
Langley Primer
PreparationSkirtingsAndVerticalWork
n/a
PunctureResistance
n/a
RecycledContent
n/a
ResistanceClass
R4 to MOAT 31
ResistanceToStaticIndentation
> 15 kg
SelvedgeWidth
n/a
SurfaceFinishTop
Macro perforated torchable film with a peel-off protective film on the selvedge
SurfaceFinishUnderside
Sanded between self-adhesive strips (protected by a siliconised peel-off film)
SurfaceProtection
n/a
SystemAccessories
Rooflights, refurbishment outlets, vents, lead-free flashings, edge trims etc
TensileStrengthAtBreak
≥ 450 N/50 mm
ThermalConductivityMaximum
0.024 W/m²K
ThicknessMinimum
3 mm
ThicknessOptions
Standard thicknesses: 25 mm, 40 mm, 50 mm, 60 mm, 80 mm, 90 mm, 95 mm, 100 mm
ThirdPartyCertification
BBA Certified
ThirdPartyProductCertification
BBA Certificate 11/4858, FM4470 Class 1, LPCB approved to LPS1181:Part 1
Uses
Refurbishment, new build suitable for all roof decks
VapourControlLayerAttachment
Torch bonded
VapourControlLayerThickness
3 mm
VapourControlLayerType
Parevapo SBS
WaterproofCoveringFirstLayerAttachment
Self-adhesive strips
WaterproofCoveringFirstLayerThickness
3 mm
WaterproofCoveringFirstLayerType
Adepar JS
WaterproofCoveringIntermediateLayerAttachment
n/a
WaterproofCoveringIntermediateLayerType
n/a
WaterproofCoveringTopLayerAttachment
Semi-adhered by torching thermofusible bitumen strips
WaterproofCoveringTopLayerThickness
5 mm
WaterproofCoveringTopLayerType
Parafor Solo GS Cap Sheet
WaterVapourResistance
n/a
Weight
17.59 kg/m²
WeightMinimum
3.8 kg/m²
Pset_CoveringCommon

More information

  • NBS specification data
    Case studies and technical literature
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