Effect of temperature on the tensile strength of roofing felt seams

Jouko Rantamäki

Research output: Book/ReportReport

Abstract

As fewer bituminous felt layers are currently used in roofing, the role of seams in the overall durability of the roof is becoming more prominent. The tensile strength of seams is examined here by means of tests performed at different temperatures under laboratory conditions using both aged and non aged specimens. SBS-modified and glass-fibre felts were used. The results indicate that shear fractures in the glass-fibre felt usually developed at the seams, in addition to which seam strength was found to decrease most at low temperatures by comparison with the seamless test sample. The seam of a SBS- modified felt did not constitute its weakest point, and fracturing usually took place elsewhere.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages22
ISBN (Print)951-38-4141-3
Publication statusPublished - 1992
MoE publication typeNot Eligible

Publication series

SeriesVTT Tiedotteita - Meddelanden - Research Notes
Number1328
ISSN1235-0605

Fingerprint

tensile strength
glass
durability
roof
temperature
fibre
effect
test
laboratory
comparison

Keywords

  • temperature
  • tensile strength
  • roofing
  • roofs
  • coatings
  • coating processes
  • life (durability)
  • damage
  • aging tests (materials)
  • comparison
  • felts
  • seams (joints)
  • layers
  • durability
  • service-life
  • tests
  • shearing
  • fractures (materials)
  • low temperatures
  • dynamic loads

Cite this

Rantamäki, J. (1992). Effect of temperature on the tensile strength of roofing felt seams. Espoo: VTT Technical Research Centre of Finland. VTT Tiedotteita - Meddelanden - Research Notes, No. 1328
Rantamäki, Jouko. / Effect of temperature on the tensile strength of roofing felt seams. Espoo : VTT Technical Research Centre of Finland, 1992. 22 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1328).
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keywords = "temperature, tensile strength, roofing, roofs, coatings, coating processes, life (durability), damage, aging tests (materials), comparison, felts, seams (joints), layers, durability, service-life, tests, shearing, fractures (materials), low temperatures, dynamic loads",
author = "Jouko Rantam{\"a}ki",
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isbn = "951-38-4141-3",
series = "VTT Tiedotteita - Meddelanden - Research Notes",
publisher = "VTT Technical Research Centre of Finland",
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Rantamäki, J 1992, Effect of temperature on the tensile strength of roofing felt seams. VTT Tiedotteita - Meddelanden - Research Notes, no. 1328, VTT Technical Research Centre of Finland, Espoo.

Effect of temperature on the tensile strength of roofing felt seams. / Rantamäki, Jouko.

Espoo : VTT Technical Research Centre of Finland, 1992. 22 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1328).

Research output: Book/ReportReport

TY - BOOK

T1 - Effect of temperature on the tensile strength of roofing felt seams

AU - Rantamäki, Jouko

PY - 1992

Y1 - 1992

N2 - As fewer bituminous felt layers are currently used in roofing, the role of seams in the overall durability of the roof is becoming more prominent. The tensile strength of seams is examined here by means of tests performed at different temperatures under laboratory conditions using both aged and non aged specimens. SBS-modified and glass-fibre felts were used. The results indicate that shear fractures in the glass-fibre felt usually developed at the seams, in addition to which seam strength was found to decrease most at low temperatures by comparison with the seamless test sample. The seam of a SBS- modified felt did not constitute its weakest point, and fracturing usually took place elsewhere.

AB - As fewer bituminous felt layers are currently used in roofing, the role of seams in the overall durability of the roof is becoming more prominent. The tensile strength of seams is examined here by means of tests performed at different temperatures under laboratory conditions using both aged and non aged specimens. SBS-modified and glass-fibre felts were used. The results indicate that shear fractures in the glass-fibre felt usually developed at the seams, in addition to which seam strength was found to decrease most at low temperatures by comparison with the seamless test sample. The seam of a SBS- modified felt did not constitute its weakest point, and fracturing usually took place elsewhere.

KW - temperature

KW - tensile strength

KW - roofing

KW - roofs

KW - coatings

KW - coating processes

KW - life (durability)

KW - damage

KW - aging tests (materials)

KW - comparison

KW - felts

KW - seams (joints)

KW - layers

KW - durability

KW - service-life

KW - tests

KW - shearing

KW - fractures (materials)

KW - low temperatures

KW - dynamic loads

M3 - Report

SN - 951-38-4141-3

T3 - VTT Tiedotteita - Meddelanden - Research Notes

BT - Effect of temperature on the tensile strength of roofing felt seams

PB - VTT Technical Research Centre of Finland

CY - Espoo

ER -

Rantamäki J. Effect of temperature on the tensile strength of roofing felt seams. Espoo: VTT Technical Research Centre of Finland, 1992. 22 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1328).