Product Data Sheet Show all documents

Sarnastack Split

PREFABRICATED STACK/PIPE BOOT

Sarnastack Split is a 1.5 mm (60 mil) thick prefabricated pipe boot open along one side to provide a simplified flashing solution for pipes, vent stacks and round penetrations up to 178 mm (7 in) in diameter when access is obstructed and does not allow for the use of a Sarnastack Universal pipe boot.

  • Time-saving and effective method to flash pipes, vent stacks and round penetrations
  • Factory-fabricated
  • Only one open seam to heat weld in the field
Product Data Sheet Show all documents

Usage

For flashing stack / pipe penetrations up to 178 mm (7 in) in diameter in Sarnafil® and Sikaplan® roofing and waterproofing details.     Areas of application:
  • Pipes
  • Vent stacks
  • Round penetrations
 

Advantages

  • Time-saving and effective method to flash pipes, vent stacks and round penetrations
  • Factory-fabricated
  • Only one open seam to heat weld in the field

Packaging

8 Sarnastack Split and 8 stainless steel clamping rings per carton

Colour

White, Tan, or Reflective Grey

Product Details

Product Information

Composition / Manufacturing

Made from Sarnafil® G410 1.5 mm (60 mil) roofing membrane

Shelf Life

Not applicable

Storage Conditions

Store cartons on pallets and keep fully protected from the weather with clean canvas tarpaulins. Unvented polyethylene tarpaulins are not accepted due to the accumulation of moisture beneath the tarpaulin in certain weather conditions that may affect the ease of weldability.

 

Dimensions

Sarnastack Split A: 19 mm (¾ in) - 76 mm (3 in) diameter
Dimensions: 25 mm (1 in) top, 127 mm (5 in) bottom, 203 mm (8 in) high, 152 mm (6 in) flange, 432 mm (17 in) diameter base

  

Sarnastack Split B: 51 mm (2 in) - 127 mm (5 in) diameter
Dimensions: 51 mm (2 in) top, 152 mm (6 in) bottom, 279 mm (11 in) high, 152 mm (6 in) flange, 457 mm (18 in) diameter base

   

Sarnastack Split C: 101 mm (4 in) - 178 mm (7 in) diameter
Dimensions: 101 mm (4 in) top, 228 mm (9 in) bottom, 279 mm (11 in) high, 152 mm (6 in) flange, 533 mm (21 in) diameter base

Application

Application steps

APPLICATION

Install the insulation and Sika roofing or waterproofing deck sheet tight to the penetration. Secure the deck sheet around the penetration with four Sarnafasteners® and Sarnadiscs® equally spaced around the penetration. Install the Sarnafasteners® and Sarnadiscs® as close to the penetration as possible.

  

After securing the Sika deck sheet, install the Sarnastack Split pipe boot as follows.

  1. Pull the Sarnastack Split pipe boot around the penetration allowing for a 32 mm (1 ¼ in) to 38 mm (1 ½ in) overlap at the seam. Trim the top of the pipe boot to provide a tight fit to the penetration.
  2. Hold the Sarnastack Split pipe boot in place where the flange meets the pipe boot and tack weld the seam at the flange then at the pipe boot.
  3. Pre-weld the flange seam then pre-weld the pipe boot seam. Be careful not to weld the flange to the deck sheet so the Sarnastack Split can be moved and adjusted until final welding. Use the penetration as support for pre-welding and rolling of the pipe boot seam.
  4. After pre-welding is complete, continue with the final welding of the seam. Use the penetration as support for the roller to provide pressure and bleed out at the seam.
  5. Probe the seam for deficiencies and repair as needed before welding the flange to the deck sheet.
  6. Execute the pre-weld and final weld of the flange to the deck sheet. Probe the flange weld and repair any deficiences.
  7. Apply a bead of Sikaflex®-1a at the top of the Sarnastack Split between the penetration and split pipe boot.
  8. Install the stainless steel clamping ring at the top of the Sarnastack Split creating a seal by compressing the Sikaflex®-1a sealant between the penetration and the split pipe boot.
 

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