PowerPointPrsentation

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Welcome
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Roofing
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ScopeRoofing systems
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Scope
PVC flat roof mechanically attached
TPO flat roof mechanically attached
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Scope
PVC flat roof mechanically attached
PVC vegetated green roof (ballasted with plants)
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Scope
PVC flat roof gravel ballasted
Bitumen flat roof mechanically attached
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Roofing Systems

• To protect the roofing membrane from uplift
  forces it needs to be fastened or ballasted.
  Following roofing systems are worldwide used
• Flat Roof (single ply)
• mechanically attached
• fully adhered
• ballasted
• Steep Roof (pitched roof)

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Roofing Systems
Mechanically Attached
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Roofing Systems
Fully Adhered
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Roofing Systems
Ballasted (gravel or vegetated)
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Roofing Systems
Steep Roof (pitched roof)
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Roofing Materials

• PVC (Polyvinylchloride)
• TPO (thermoplastic Polyolefin)
• FPO (flexible Polyolefin)
• EPDM (Ethylene-Propylene-Dien-Terpolymere)
• Bitumen (asphalt modified with atactic
  polyolefin reinforced with a non-woven
  polyester mat)
• ECB (Ethylene Copolymer Bitumen)
• CSPE (Hypalon/chlorosulfonated polyethylene
  synthetic rubber )

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Roofing Materials
Membrane Reinforcement
Roofing membranes with glass-fleece armouring
are used with loosely laid flat roofs which are
ballasted with gravel or plants.
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Roofing Materials
Membrane Reinforcement
Roofing membranes with synthetic armouring
(polyester) are used for mechanically fixed flat
roofs. The material guarantees a high mechanical,
biaxial stability at the fastening screws.
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Welding Procedure
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Welding Procedure

• Hot Air Welding

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Welding Procedure

• Following welding procedures are possible
• extrusion welding
• hot wedge welding (heating element)
• hot air welding
• All welding procedures require an accordance of
  the following parameters
• temperature
• pressure
• speed
• Joining areas must be dry and free of impurity.
  For T-joints the front surface of the upper
  membrane must be held slanted.

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Welding Procedure Under Construction Site
Conditions

• Condition of Surface
• solid underground with smooth surface without
  bumps (clean laying)
• Building sites should be free of sharp items,
  roots and stones.

• Environment Conditions / Weather Conditions /
  Rain
• In case of rain it must not be welded without
  any special safety measures.

• Air Temperature
• Welding procedures have to be stopped at
  temperatures under 5C in order to prevent high
  thermal strains of the roofing membrane.

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Welding Procedure Under Construction Site
Conditions

• Air Humidity
• High air humidity might cause perspiration water
  on the welding surface which is unfavourable for
  the seam strength.

• Wind
• Due to strong wind the required welding
  temperature might not be reached. To solve this
  problem, the welding temperature has to be
  increased up to 2030C. If the wind is too
  strong, the welding area should be protected, or
  the welding process has to be stopped.

• Sunshine
• Sunshine causes strong heating up, especially of
  black roofing membranes. This causes an increased
  thermal expansion of the membrane and results in
  wrinkles. The welding process becomes more
  difficult, and when cooling down abnormal strain
  in the seam area occurs.

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Welding Machines Roofing
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Welding Machines

• For welding of PVC, TPO, EPDM, CSPE, ECB roofing
  membranes
• Overlap welding machine Varimat V 40mm,
  230V/4600W
• Overlap welding machine Varimat V 40mm,
  400V/5700W
• Speed 0.5 5 m/min
• Pressure 190 N
• Optional version with max. speed 12 m/min
  available
• FEATURES
• Easy welding even of homogenous and thin roofing
  membranes
• Wrinkle-free welding up to 5m/min (optional 12
  m/min)
• Patented pendulum pressure roller guarantees
  uniform pressure also on uneven surfaces
• Digital display of set and actual values of
  welding speed and temperature
• Constant temperature independent of voltage
  fluctuations and ambient temperature
• Convertible to 80/100/120 mm overlap welding of
  bitumen

• VARIMAT V

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Welding Machines
VARIMAT V Accessories
112.203 Welding unit Varimat
40mm (230V) includes overlap
welding nozzle 40mm, pressure roller 40mm,
connecting link 40mm 112.204
Welding unit Varimat 40mm (400V/5500W)
includes overlap welding nozzle 40mm,
pressure roller 40mm, connecting link 40mm
heating element 400V/27002750W
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Welding Machines
VARIMAT V Special Accessories (Grip Nozzle)
Overlap welding nozzle Grip 40mm
(113.600) Overlap welding nozzle Grip 30mm
(113.995) Due to the rasps on the welding shoe
the surface of the material is roughened which
guarantees a better mixing of the thermoplastic
material.
Manufacturers of FPOA (flexible polyolefin alloy)
roofing membranes have first to clean the welding
seam area with special purifiers in order to
reach a perfect welding. By roughening the
roofing membrane the impurity and the oxide cover
can be scrapped off in order to get to the clean
surface. This allows to work without
purifiers. Not suitable for PVC!
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Welding Machines

• For welding of modifizied Bitumen (SBS APP)
• BITUMAT welding seam width 80 und 100mm
• Voltage 230V (50 60 Hz) / 400V
• Power consumption 6700W
• Speed 0.8 12 m/min
• Features
• Consistant welding results
• Easy operation
• High welding speed
• Pivotable steering bar enhances safety at work
• Interchangeable driving roller simplifies
  cleaning
• Integrated bitumen scraper
• Electronic heating element protection

• BITUMAT

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Welding Machines
BITUMAT Features
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Welding Machines
BITUMAT Features
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Welding Machines
BITUMAT Features
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Welding Machines
BITUMAT Features
The easy to operate hot-air welding machine is
the perfect alternative to the hazard of propane
gas burners. The performance of the BITUMAT is a
constant, fast and perfect weld and is well
accepted with the insurance companies. Different
material manufacturer confirm, that the welding
performed with the BITUMAT, have up to 50 higher
peel resistance results compared to torch weld!!
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Welding Machines
BITUMAT Features
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Welding Machines
BITUMAT Features
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Welding Machines
BITUMAT Accessories
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Application note
Modified bitumen field base membrane (vapour
barrier), mechanically attached and lap welded
Modified bitumen roof, single ply, mechanically
attached.
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Welding Machines
X 84

• The X 84 is used in Central Europe on pitched
  roofs and flat roofs (loosely laid).
• FEATURES
• Small, light and compact
• Applicable independent of surface
• Constant welding pressure
• Controlled welding speed
• Choice of two levels for airflow

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Welding Machines

• TRIAC DRIVE PID

• Horizontal, vertical, diagonal This tried and
  tested semi-automatic welding machine can be used
  universally.
• FEATURES
• Faster and more efficient than hand welding
• Small and compact
• Steplessly adjustable speed for higher welding
  seam quality
• Can be used in the most confined spaces
• Different welding seam widths

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Welding Machines
TRIAC DRIVE PID Accessories
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Welding Machines
TRIAC DRIVE PID Accessories
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Hand Tools

• With stepless temperature control and electronic
  monitoring, the Triac PID is the preferred hand
  tool for works with high quality.
• FEATURES
• Reproducible results thanks to digital display
  of set and actual temperature
• Constant temperature independent of voltage
  fluctuations and ambient temperature
• Adaptor tube with heat protection
• Electronic heating element protection
• Motor shut-off at minimal carbon level
• Suitable for continuous operation
• Multiple replacement of carbon brushes possible

• TRIAC PID

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Hand Tools

• The reliable, cost-effective and proven hand tool
  with steplessly controlled temperature.
• FEATURES
• Adaptor tube with heat protection
• Electronic heating element protection
• Motor shut-off at minimal carbon level
• Multiple replacement of carbon brushes possible
• Suitable for continuous operation

TRIAC S
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Hand Tools
TRIAC PID/S Accessories
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Hand Tools

• The most compact hand tool from Leister HOT JET
  S low weight of only 600 grams incl. cord and
  slim handle, ensures fatigue-free working.
• FEATURES
• Worldwide the smallest hand tool
• Electronic steplessly controlled temperature
• Electronic steplessly controlled airflow
• Electronic heating element protection
• Low noise
• Integrated flexible tool stand

• HOT JET S

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Hand Tools
HOT JET S Accessories
Other Accessories
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Hand Tools
Other Accessories
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Hand Tools

• The powerful Leister ELECTRON is a hand tool,
  perfect for the specialist.
• FEATURES
• Powerful
• Compact
• Robust
• Construction site tried and tested
• Approved of bitumen

ELECTRON
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Hand Tools
ELECTRON Accessories
Wide slot nozzle 70x10 mm for heating up and
drying
Wide slot nozzle 75x2 mm for welding of bitumen
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Test Equipment
EXAMO

• Is the welding seam closed and can it withstand
  the required peeling, tensile and shearing
  forces? EXAMO performs right on the construction
  site quick, reliable and uncomplicated.
• FEATURES
• Designed for construction site conditions
• Handy, robust and light
• Digital display of elongation, peak force, tear
  force, test speed and position
• With optional data recording on a memory card
• Optionally for geotextiles

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Thank you for your attention!