Product Data Sheet Show all documents

Sika® Joint Tape SA

Self-adhering polymeric rubberized tape with woven polyester facer

Self-adhering polymeric rubberized tape with plastic release liner on underside and woven polyester facer on top side. Enhances the strength and durability of Sikalastic® roofing and waterproofing membranes at joints and angle changes.

  • Self-adhering, no primer required for most applications
  • Polyester 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
Product Data Sheet Show all documents

Usage

  • Reinforcement of joints between cover boards and insulation
  • Reinforcement of joints between plywood deck panels
  • Reinforcement of joints and seams in metal roofing
  • Stripping in of metal flanges to structural deck
  • Temporary repair when coated with Sikalastic® resin
 

Advantages

  • Self-adhering, no primer required for most applications
  • Polyester 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

  • 3” w x 50', individually wrapped rolls and sold in cases (8 rolls to carton)
  • 6” w x 50’, individually wrapped rolls and sold in cases (4 rolls to carton)

Color

Off-white

Product Details

Product Information

Shelf Life

60 months

Storage Conditions

Store flat in original, unopened and undamaged sealed packaging in dry conditions. Do not expose to direct sunlight or other heat sources.

Top surface

Polyester

Bottom Surface

Grey, adhesive with release liner

Thickness

30 mils

 

Application

Application steps

SUBSTRATE PREPARATION

Substrate surfaces, including flashing substrates, have to be clean and dry, free of dirt, dust, loose rust, debris, and oils. Solvent wiping metal flanges or contaminated surfaces with denatured alcohol or acetone is recommended.

Priming is typically not required. Substrate surfaces that are dusty or oxidized, or in cold weather applications (20–40 °F. -6–4 °C), require the use of Sika Joint Tape SA Primer. Primer is applied at the approximate rate of 200–250 sf/gal. with a natural bristle brush or a phenolic resin core roller (See separate data sheet).  May be applied over properly installed and cured Sikalastic Primers.

APPLICATION

Non-moving Joints
Apply Sika® Joint Tape SA to prepared substrate. Remove 4–6” of release liner from underside of Sika® Joint Tape SA. Position Sika® Joint Tape SA centered over joint extending 1–1/2” minimum over each side of the joint, and press into place. Continue to remove release liner and press Sika Joint Tape SA onto substrate surface to activate bonding process. Use a steel roofer’s roller for best results. The firmer the pressure applied, the faster and stronger the bond.

  

Touch-Up
Lance, cut or pierce air bubbles and force out the air, then press the Sika® Joint Tape SA back in place. Cut open tented sections of tape, press the Sika® Joint Tape SA back in place, and apply an additional layer of Sika® Joint Tape SA over the cut, extending 1–1/2” minimum in all directions. Cut away bunched up sections of tape, press the Sika® Joint Tape SA back in place, and apply an additional layer of Sika® Joint Tape SA over the cut, extending 1–1/2” minimum in all directions. Use a steel roofer’s roller on all remedial/repair applications for best results.
 

Over Coating
Sikalastic resins and coatings may be applied immediately following Sika Joint Tape SA application, and should be applied the same day or within 72 hours to a clean and dry tape surface. Priming of the Sika Joint Tape SA polyester surface is not required but also does not affect tape performance. Sika Joint Tape SA is UV resistant but is not intended for direct exposure.

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