US3355846A - Roof expansion joint - Google Patents

Roof expansion joint Download PDF

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Publication number
US3355846A
US3355846A US546111A US54611166A US3355846A US 3355846 A US3355846 A US 3355846A US 546111 A US546111 A US 546111A US 54611166 A US54611166 A US 54611166A US 3355846 A US3355846 A US 3355846A
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US
United States
Prior art keywords
tube
flashing
cant
members
roof
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US546111A
Inventor
Charles H Tillson
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Goodrich Corp
Original Assignee
BF Goodrich Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BF Goodrich Corp filed Critical BF Goodrich Corp
Priority to US546111A priority Critical patent/US3355846A/en
Priority to GB04321/67A priority patent/GB1167267A/en
Priority to SE04467/67A priority patent/SE329487B/xx
Application granted granted Critical
Publication of US3355846A publication Critical patent/US3355846A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66—Sealings
    • E04B1/68—Sealings of joints, e.g. expansion joints
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/15—Trimming strips; Edge strips; Fascias; Expansion joints for roofs
    • E04D13/151—Expansion joints for roofs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/36—Connecting; Fastening
    • E04D3/366—Connecting; Fastening by closing the space between the slabs or sheets by gutters, bulges, or bridging elements, e.g. strips

Definitions

  • This invention relates to waterproof seals for expansion joints in roots and similar places to compensate for thermal expansion and contraction of the roof material.
  • the expansion joint seal of this invention is uniquely simple and capable of low cost fabrication and installation, as compared with the presently known structures for sealing roof expansion joints. Additionally, the seal of this invention provides a permanent thermal insulation along the entire length of the expansion gap.
  • a roof expansion gap is covered and closed by a single flexible tube which bridges between the roof members defining the gap and fits lengthwise along the gap.
  • a flexible flashing, or roofing material is then fastened to the roof members so that it covers and encloses the side of the tube directed away from thegap.
  • the flexible tube prevents the flexible weather proof covering from being subjected to direct shear loads parallel to the roof members.
  • the tube is supported by and between the two opposing cant strips fastened on the roof members.
  • the tube is preferably a flexible sponge material.
  • FIG. 1 is a cross-sectional view of the preferred roof expansion joint seal showing the position of the parts when the roofing members are expanded to reduce the clearance or gap between them to its minimum width.
  • FIG. 2 is a cross-sectional view showing the same parts when the roofing members are contracted to expand the gap between them to its maximum width.
  • the preferred roof expansion joint seal of this invention is shown in an expansion gap A between two adjoining roofing sheets and 12.
  • the seal includes a cant strip 14 fastened to the top surface edge of roofing sheet 10, and another similar cant strip 16 fastened to the top surface edge of roofing sheet 12 so that it is parallel to and spaced laterally from cant strip 14.
  • These cant strips are interconnected by a narrow restriction flashing 18 the lengthwise edges of which are fastened to both cant strips 14 and 16 so that the central portion of flashing 18 sags below the top portion of cant strips 10 and 12.
  • a flexible-sponge-like foamed rubber or plastic tube 'ice 20 rests loosely upon the top edges of canting strips 10 and 12 and immediately above flash-ing 18 as shown in FIG. 1.
  • the tube 20 is considerably wider than the maximum gap width between the roof sheets 10 and 12 and the tube fits lengthwise along the gap between the cant strips.
  • a weather flashing 22 encloses the entire roofing joint.
  • the lengthwise central portion of flashing 22 directly covers and encloses the side of tube 20 directed away from the cant strips and flashing piece 18.
  • One of the lengthwise margin portions of flashing 22 is cemented or otherwise fastened to the exposed face of cant strips 14 and sheeting 10.
  • the opposite lengthwise margin portion of flashing 22 is similarly bonded to the exposed face of cant strip 16 and sheeting 12.
  • the cant strips 14 and 16 are preferably wood and may be simply nailed directly to the roofing sheets.
  • the restriction flashing 18, which is preferably a flexible vinyl material, may be affixed to cant strips 14 and 16 by adhesive or mechanical means.
  • Insulator tube 20 may be any suitable foamed flexible material. It is laid loosely along the top edges of cant strips 14 and 16 without any fastening other than that provided by the flashing 22.
  • Flashing 22 is preferably a flexible vinyl sheet material and is bonded at its outer edges to both the roofing sheets 10 and 12, and cant strips 14 and 16 with suitable adhesives.
  • FIG. 1 shows the roofing sheets 10 and 12 in a position where high temperature has resulted in a close or minimum spacing between cant strips 14 and 16 due to expansion of roofing sheets 10 and 12..
  • FIG. 2 shows the maximum possible spacing and at this FIG. 2 position tube 20 is engaged by restraint flashing 18 which results in a deformation of tube 20. Tube 20 may be easily deformed without impairing its sealing ability.
  • flashing 22 flexes easily between about its FIG. 1 position and its FIG. 2 position. This design transmits no significant shear stresses to the adhesive bonds attaching the margins of flashing 22 to the roof sheets and cant strips.
  • An expansion joint seal comprising two laterally spaced members one of which is movable relative to the other to provide a variable width expansion gap between the members, a flexible tube having a lateral dimension larger than the maximum width of said gap, said tube bridging between and being supported by said members lengthwise along said gap, and a flexible weather proof flashing attached to each of said members and also covering and enclosing the side of said tube directed away from said gap.
  • a roof expansion joint seal comprising two adjacent laterally spaced roofing members, a pair of cant strips 3 4 :ach fastened to one of said members, a flexible tube References Cited nember bridging between and supported lengthwise by UNITED STATES PATENTS said pair of cant strips, and a weather proof flashing which i fastened to said roofing members and which 3093934 6/1963 Underhin 52 277 :overs and encloses said cant strips and the side of said 5 3,124,047 3/1964 Graham X lube directed away from said cant strips.
  • FOREIGN PATENTS 4.
  • said joint further comprises a restriction flashing fastened to said adjacent cant strips and extending be- FRANK L ABBOTT Primary Examiner tween said cant strips around the side of said tube directed m :ow ard said cant strips.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Building Environments (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)

Description

Dec. 5, 1967 c. H. TILLSON 3,355,845
ROOF EXPAN5ION JOINT Filed April 1, 1966 F l G 2 INVENTOR.
CHARLES H. TILL-SON ATTY.
United, States Patent ABSTRACT OF THE DISCLOSURE An expansion joint featuring a flexible tu'be overlying the gapf between structural members being covered by a flexible flashing member, the tube being deformable in response to gap variation to reduce shear forces on the flashing member.
This invention relates to waterproof seals for expansion joints in roots and similar places to compensate for thermal expansion and contraction of the roof material.
The expansion joint seal of this invention is uniquely simple and capable of low cost fabrication and installation, as compared with the presently known structures for sealing roof expansion joints. Additionally, the seal of this invention provides a permanent thermal insulation along the entire length of the expansion gap.
According to the invention a roof expansion gap is covered and closed by a single flexible tube which bridges between the roof members defining the gap and fits lengthwise along the gap. A flexible flashing, or roofing material is then fastened to the roof members so that it covers and encloses the side of the tube directed away from thegap. The flexible tube prevents the flexible weather proof covering from being subjected to direct shear loads parallel to the roof members. Preferably the tube is supported by and between the two opposing cant strips fastened on the roof members. The tube is preferably a flexible sponge material.
The invention will be further described with reference to the accompanying drawings which show one preferred roof expansion joint seal embodying the principles of this invention.
In the drawing:
FIG. 1 is a cross-sectional view of the preferred roof expansion joint seal showing the position of the parts when the roofing members are expanded to reduce the clearance or gap between them to its minimum width.
FIG. 2 is a cross-sectional view showing the same parts when the roofing members are contracted to expand the gap between them to its maximum width.
The preferred roof expansion joint seal of this invention is shown in an expansion gap A between two adjoining roofing sheets and 12. The seal includes a cant strip 14 fastened to the top surface edge of roofing sheet 10, and another similar cant strip 16 fastened to the top surface edge of roofing sheet 12 so that it is parallel to and spaced laterally from cant strip 14. These cant strips are interconnected by a narrow restriction flashing 18 the lengthwise edges of which are fastened to both cant strips 14 and 16 so that the central portion of flashing 18 sags below the top portion of cant strips 10 and 12.
A flexible-sponge-like foamed rubber or plastic tube 'ice 20 rests loosely upon the top edges of canting strips 10 and 12 and immediately above flash-ing 18 as shown in FIG. 1. The tube 20 is considerably wider than the maximum gap width between the roof sheets 10 and 12 and the tube fits lengthwise along the gap between the cant strips.
A weather flashing 22 encloses the entire roofing joint. The lengthwise central portion of flashing 22 directly covers and encloses the side of tube 20 directed away from the cant strips and flashing piece 18. One of the lengthwise margin portions of flashing 22 is cemented or otherwise fastened to the exposed face of cant strips 14 and sheeting 10. The opposite lengthwise margin portion of flashing 22 is similarly bonded to the exposed face of cant strip 16 and sheeting 12.
The cant strips 14 and 16 are preferably wood and may be simply nailed directly to the roofing sheets. The restriction flashing 18, which is preferably a flexible vinyl material, may be affixed to cant strips 14 and 16 by adhesive or mechanical means.
Insulator tube 20 may be any suitable foamed flexible material. It is laid loosely along the top edges of cant strips 14 and 16 without any fastening other than that provided by the flashing 22.
Flashing 22 is preferably a flexible vinyl sheet material and is bonded at its outer edges to both the roofing sheets 10 and 12, and cant strips 14 and 16 with suitable adhesives.
When the thermal expansion and contraction of roofing sheets 10 and 12 causes cant strips 14 and 16 to move in parallelism closer to each other or further apart as the case may be, the flexible tube 20 will consequently rise and fall accordingly depending on the spacing. In FIG. 1, the roofing sheets 10 and 12 are shown in a position where high temperature has resulted in a close or minimum spacing between cant strips 14 and 16 due to expansion of roofing sheets 10 and 12.. FIG. 2, on the other hand, shows the maximum possible spacing and at this FIG. 2 position tube 20 is engaged by restraint flashing 18 which results in a deformation of tube 20. Tube 20 may be easily deformed without impairing its sealing ability.
As tube 20 rises and falls in response to changes in the spacing between supporting cant strips 14 and 16, flashing 22 flexes easily between about its FIG. 1 position and its FIG. 2 position. This design transmits no significant shear stresses to the adhesive bonds attaching the margins of flashing 22 to the roof sheets and cant strips.
I claim:
1. An expansion joint seal comprising two laterally spaced members one of which is movable relative to the other to provide a variable width expansion gap between the members, a flexible tube having a lateral dimension larger than the maximum width of said gap, said tube bridging between and being supported by said members lengthwise along said gap, and a flexible weather proof flashing attached to each of said members and also covering and enclosing the side of said tube directed away from said gap.
2. A roof expansion joint seal according to claim 1 wherein said tube is a flexible sponge material.
3. A roof expansion joint seal comprising two adjacent laterally spaced roofing members, a pair of cant strips 3 4 :ach fastened to one of said members, a flexible tube References Cited nember bridging between and supported lengthwise by UNITED STATES PATENTS said pair of cant strips, and a weather proof flashing which i fastened to said roofing members and which 3093934 6/1963 Underhin 52 277 :overs and encloses said cant strips and the side of said 5 3,124,047 3/1964 Graham X lube directed away from said cant strips. FOREIGN PATENTS 4. A roof expansion joint seal according to claim 3 1,077,435 4/1954 France.
wherein said joint further comprises a restriction flashing fastened to said adjacent cant strips and extending be- FRANK L ABBOTT Primary Examiner tween said cant strips around the side of said tube directed m :ow ard said cant strips. ALFRED C. PERHAM, Examiner.

Claims (1)

  1. 3. A ROOF EXPANSION JOINT SEAL COMPRISING TWO ADJACENT LATERALLY SPACED ROOFING MEMBERS, A PAIR OF CANT STRIPS EACH FASTENED TO ONE OF SAID MEMBERS, A FLEXIBLE TUBE MEMBER BRIDGING BETWEEN AND SUPPORTED LENGTHWISE BY SAID PAIR OF CANT STRIPS, AND A WEATHER PROOF FLASHING WHICH IS FASTENED TO SAID ROOFING MEMBERS AND WHICH
US546111A 1966-04-01 1966-04-01 Roof expansion joint Expired - Lifetime US3355846A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US546111A US3355846A (en) 1966-04-01 1966-04-01 Roof expansion joint
GB04321/67A GB1167267A (en) 1966-04-01 1967-03-29 Expansion Joints in Buildings
SE04467/67A SE329487B (en) 1966-04-01 1967-03-31

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US546111A US3355846A (en) 1966-04-01 1966-04-01 Roof expansion joint

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US3355846A true US3355846A (en) 1967-12-05

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GB (1) GB1167267A (en)
SE (1) SE329487B (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643388A (en) * 1968-01-09 1972-02-22 Carlisle Corp Flexible expansion joint for structures
US4781004A (en) * 1982-09-28 1988-11-01 The Bf Goodrich Company Joint system for roofing panels
US4848044A (en) * 1988-07-14 1989-07-18 Manville Corporation Expansion joint cover
US5607253A (en) * 1992-11-10 1997-03-04 Intermerc Kb Dilatation joint element
US8739495B1 (en) 2008-11-20 2014-06-03 Emseal Joint Systems Ltd. Fire and water resistant expansion joint system
US8813450B1 (en) 2009-03-24 2014-08-26 Emseal Joint Systems Ltd. Fire and water resistant expansion and seismic joint system
US8813449B1 (en) 2009-03-24 2014-08-26 Emseal Joint Systems Ltd. Fire and water resistant expansion and seismic joint system
US9068297B2 (en) 2012-11-16 2015-06-30 Emseal Joint Systems Ltd. Expansion joint system
US9200437B1 (en) 2008-12-11 2015-12-01 Emseal Joint Systems Ltd. Precompressed foam expansion joint system transition
US9322163B1 (en) * 2011-10-14 2016-04-26 Emseal Joint Systems, Ltd. Flexible expansion joint seal
US9631362B2 (en) 2008-11-20 2017-04-25 Emseal Joint Systems Ltd. Precompressed water and/or fire resistant tunnel expansion joint systems, and transitions
US9637915B1 (en) 2008-11-20 2017-05-02 Emseal Joint Systems Ltd. Factory fabricated precompressed water and/or fire resistant expansion joint system transition
US9670666B1 (en) 2008-11-20 2017-06-06 Emseal Joint Sytstems Ltd. Fire and water resistant expansion joint system
US9739050B1 (en) 2011-10-14 2017-08-22 Emseal Joint Systems Ltd. Flexible expansion joint seal system
US10066387B2 (en) 2008-12-11 2018-09-04 Emseal Joint Systems, Ltd. Precompressed foam expansion joint system transition
US10316661B2 (en) 2008-11-20 2019-06-11 Emseal Joint Systems, Ltd. Water and/or fire resistant tunnel expansion joint systems
US10851542B2 (en) 2008-11-20 2020-12-01 Emseal Joint Systems Ltd. Fire and water resistant, integrated wall and roof expansion joint seal system
US11180995B2 (en) 2008-11-20 2021-11-23 Emseal Joint Systems, Ltd. Water and/or fire resistant tunnel expansion joint systems

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2307490A (en) * 1995-11-24 1997-05-28 Inpace Ltd Flexible damp-proofing and insulating building element

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1077435A (en) * 1953-05-19 1954-11-08 Watertight seal especially for closing cold rooms
US3093934A (en) * 1960-05-13 1963-06-18 Dow Chemical Co Expansion joint
US3124047A (en) * 1964-03-10 Joint seal

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124047A (en) * 1964-03-10 Joint seal
FR1077435A (en) * 1953-05-19 1954-11-08 Watertight seal especially for closing cold rooms
US3093934A (en) * 1960-05-13 1963-06-18 Dow Chemical Co Expansion joint

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643388A (en) * 1968-01-09 1972-02-22 Carlisle Corp Flexible expansion joint for structures
US4781004A (en) * 1982-09-28 1988-11-01 The Bf Goodrich Company Joint system for roofing panels
US4848044A (en) * 1988-07-14 1989-07-18 Manville Corporation Expansion joint cover
US5607253A (en) * 1992-11-10 1997-03-04 Intermerc Kb Dilatation joint element
US9644368B1 (en) 2008-11-20 2017-05-09 Emseal Joint Systems Ltd. Fire and water resistant expansion joint system
US10179993B2 (en) 2008-11-20 2019-01-15 Emseal Joint Systems, Ltd. Water and/or fire resistant expansion joint system
US10851542B2 (en) 2008-11-20 2020-12-01 Emseal Joint Systems Ltd. Fire and water resistant, integrated wall and roof expansion joint seal system
US11459748B2 (en) 2008-11-20 2022-10-04 Emseal Joint Systems, Ltd. Fire resistant expansion joint systems
US10519651B2 (en) 2008-11-20 2019-12-31 Emseal Joint Systems Ltd. Fire resistant tunnel expansion joint systems
US11180995B2 (en) 2008-11-20 2021-11-23 Emseal Joint Systems, Ltd. Water and/or fire resistant tunnel expansion joint systems
US10941562B2 (en) 2008-11-20 2021-03-09 Emseal Joint Systems Ltd. Fire and water resistant expansion joint system
US9528262B2 (en) 2008-11-20 2016-12-27 Emseal Joint Systems Ltd. Fire and water resistant expansion joint system
US9631362B2 (en) 2008-11-20 2017-04-25 Emseal Joint Systems Ltd. Precompressed water and/or fire resistant tunnel expansion joint systems, and transitions
US9637915B1 (en) 2008-11-20 2017-05-02 Emseal Joint Systems Ltd. Factory fabricated precompressed water and/or fire resistant expansion joint system transition
US10794056B2 (en) 2008-11-20 2020-10-06 Emseal Joint Systems Ltd. Water and/or fire resistant expansion joint system
US9670666B1 (en) 2008-11-20 2017-06-06 Emseal Joint Sytstems Ltd. Fire and water resistant expansion joint system
US10316661B2 (en) 2008-11-20 2019-06-11 Emseal Joint Systems, Ltd. Water and/or fire resistant tunnel expansion joint systems
US10934702B2 (en) 2008-11-20 2021-03-02 Emseal Joint Systems Ltd. Fire and water resistant expansion joint system
US8739495B1 (en) 2008-11-20 2014-06-03 Emseal Joint Systems Ltd. Fire and water resistant expansion joint system
US10934704B2 (en) 2008-11-20 2021-03-02 Emseal Joint Systems Ltd. Fire and/or water resistant expansion joint system
US10066387B2 (en) 2008-12-11 2018-09-04 Emseal Joint Systems, Ltd. Precompressed foam expansion joint system transition
US10072413B2 (en) 2008-12-11 2018-09-11 Emseal Joint Systems, Ltd. Precompressed foam expansion joint system transition
US10422127B2 (en) 2008-12-11 2019-09-24 Emseal Joint Systems, Ltd. Precompressed foam expansion joint system transition
US9200437B1 (en) 2008-12-11 2015-12-01 Emseal Joint Systems Ltd. Precompressed foam expansion joint system transition
US10570611B2 (en) 2008-12-11 2020-02-25 Emseal Joint Systems Ltd. Method of making a water resistant expansion joint system
US9689157B1 (en) 2009-03-24 2017-06-27 Emseal Joint Systems Ltd. Fire and water resistant expansion and seismic joint system
US8813450B1 (en) 2009-03-24 2014-08-26 Emseal Joint Systems Ltd. Fire and water resistant expansion and seismic joint system
US9689158B1 (en) 2009-03-24 2017-06-27 Emseal Joint Systems Ltd. Fire and water resistant expansion and seismic joint system
US8813449B1 (en) 2009-03-24 2014-08-26 Emseal Joint Systems Ltd. Fire and water resistant expansion and seismic joint system
US10787806B2 (en) 2009-03-24 2020-09-29 Emseal Joint Systems Ltd. Fire and/or water resistant expansion and seismic joint system
US10787805B2 (en) 2009-03-24 2020-09-29 Emseal Joint Systems Ltd. Fire and/or water resistant expansion and seismic joint system
US9739050B1 (en) 2011-10-14 2017-08-22 Emseal Joint Systems Ltd. Flexible expansion joint seal system
US9850662B2 (en) * 2011-10-14 2017-12-26 Emseal Joint Systems Ltd. Flexible expansion joint seal
US20160237689A1 (en) * 2011-10-14 2016-08-18 Emseal Joint Systems Ltd. Flexible expansion joint seal
US9322163B1 (en) * 2011-10-14 2016-04-26 Emseal Joint Systems, Ltd. Flexible expansion joint seal
US10544582B2 (en) 2012-11-16 2020-01-28 Emseal Joint Systems Ltd. Expansion joint system
US9963872B2 (en) 2012-11-16 2018-05-08 Emseal Joint Systems LTD Expansion joint system
US9068297B2 (en) 2012-11-16 2015-06-30 Emseal Joint Systems Ltd. Expansion joint system

Also Published As

Publication number Publication date
SE329487B (en) 1970-10-12
GB1167267A (en) 1969-10-15

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