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Sikalastic®-100 Joint Tape

Self-adhering roof waterproofing tape

Sikalastic®-100 Joint Tape is a self-adhering, polymeric, rubberized tape with a plastic release liner on the underside and a woven polyester facing. It enhances the strength and durability of Sikalastic® roof waterproofing membranes at joints and angle changes.

  • Self-adhering, no primer required for most applications
  • Easy and reliable application
  • Fleece facer allows positive resin/coating bond
  • Stretches with membrane to accomodate thermal and structural movement
  • Imparts additional strength and durability
  • Conforms to substrate contours and flashing conditions
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Usage

Reinforcement of:
  • Joints between cover boards on heat insulation.
  • Joints between plywood deck panels.
  • Cracks and cold joints on cementitious (or cement-based) roof decks.
  • Seams in metal roofing.
 

Advantages

  • Self-adhering, no primer required for most applications
  • Easy and reliable application
  • Fleece facer allows positive resin/coating bond
  • Stretches with membrane to accomodate thermal and structural movement
  • Imparts additional strength and durability
  • Conforms to substrate contours and flashing conditions

Packaging

20-meter long rolls in a carton box

Colour

Gray fleece top surface

Product Details

Product Information

Composition

Butyl rubber with fleece facer

Shelf life

12 months

Storage conditions

Store flat in original, unopened and undamaged sealed packaging in dry conditions (between +5 °C and +35 °C). Do not expose to direct sunlight or other heat sources.

Length

20m

Width

100mm
Technical Information

Service temperature

Minimum

-30 oC

Maximum

+60 oC

 

Application

Application Information

Ambient air temperature

+5 °C min. / +60 °C max.

Relative air humidity

90% max.

Substrate temperature

+5 °C min. / +60 °C max.
Application steps

SUBSTRATE PREPARATION

The substrate must be primed according to the requirements of the selected roof waterproofing system

All substrate surfaces, including flashing areas, must be clean and dry, free of dirt, dust, loose rust, debris, and oils.

Solvent wiping metal flanges or any contaminated surfaces with denatured alcohol or acetone is recommended.

While priming is typically not required for many surfaces, for sound installations, substrate priming must adhere to the specifications of the chosen roof waterproofing system.

APPLICATION

Important

Do not apply to a porous or damp surface where moisture vapor transmission will occur during application and curing.

Remove the adhesive release liner before application.

Non-Moving (Static) joints

Note: Avoid air bubbles and wrinkles during application whenever possible.

  1. Unroll a short length of tape from the roll.

  2. Peel back 100 to 150mm of the adhesive release liner from the underside of the tape.

  3. Apply this length of tape onto the substrate, centering it over the joint. The tape should extend a minimum of 30 to 50mm past each side of the joint.

  4. Press the applied tape onto the substrate using a silicone or rubber hand-held seam roller.

  5. Continue to apply the tape by unrolling and removing the release liner until the entire joint length is covered.

  6. Reroll the tape along the entire length using the pressure roller.

  7. Apply firm, additional pressure with the roller to the complete length of the applied tape to activate the bonding process. The firmer the pressure applied, the faster and stronger the bond.

Remedial repairs and removal of defects

Remedial Repairs (Damaged Tape)

  1. Cut away the damaged tape area using a sharp utility knife.

  2. Apply a new layer of tape over the damaged area, extending a minimum of 30 to 50mm beyond the damaged area edges.

  3. Press the new tape layer with a silicone or rubber hand-held seam roller.

  4. Apply additional firm pressure with the roller to the new tape layer to activate the bonding process.

 

Air bubble removal—piercing

  1. Pierce the air bubble with a sharp needle.

  2. Force the air out by applying pressure over the bubbled area using a silicone or rubber hand-held seam roller.

Air bubble removal—cutting

  1. Use a utility knife to cut the bubbled area.

  2. Press the tape back into place.

  3. Apply an additional layer of tape over the cut, extending a minimum of 30 to 50mm past the cut line in all directions.

  4. Press the new tape layer with a silicone or rubber hand-held seam roller.

  5. Apply additional firm pressure with the roller to the new tape layer to activate the bonding process.

  6. Apply additional pressure with the pressure roller to the new tape layer to activate the bonding process.

Removing wrinkles

  1. Use a utility knife to cut away the bunched-up (wrinkled) section of tape.

  2. Press the cut edges back into place.

  3. Apply a new layer of tape over the removed area, extending a minimum of 30 to 50mm beyond the removed area edges.

  4. Press the new tape layer with a silicone or rubber hand-held seam roller.

  5. Apply additional firm pressure with the roller to the new tape layer to activate the bonding process.

Sikalastic® roof waterproofing membrane application

Light amount of specified liquid applied membrane should be applied immediately after the tape is installed, to the surface of the tape and its edges, as a moisture protection barrier. This is particularly important when there is any imminent risk of moisture originating from either condensation or rainfall. This can be achieved by brush or by roller. The application of material - to act as a moisture barrier - is not included within overall specified coating requirements, and is an additional requirement. Sikalastic® 100 Joint Tape is UV resistant but is not intended for direct exposure.

 

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