Sarnacol® OM Feltback Membrane Adhesive
Two-component foamable polyurethane adhesive
Sarnacol® OM Feltback Membrane Adhesive is a two-component foamable polyurethane adhesive that is applied in one step and sets up in minutes.
- Low VOC
- Rapid application with appropriate dispensing tools
- Chemical cure for fast set up and dry in times
Usage
Used to bond Sarnafil® and Sikaplan® feltback membranes to approved substrates. AREAS OF APPLICATION Approved Substrates- Structural Concrete
- Mineral Surface Modified Bitumen
- Approved Sika Vapor Retarders
- Approved Sika Ply Sheets
- Polyisocyanurate Insulations
- High Density Polyisocyanurate Roof Boards
Advantages
- Low VOC
- Rapid application with appropriate dispensing tools
- Chemical cure for fast set up and dry in times
Packaging
- 1.5 L (0.4 gal) dual cartridge, 4 dual cartridges per case; 19 lbs (8.6 kg) per case, 40 cases per pallet
- 10 gal (37.8 L) box set: 5 gal (18.9 L) 53 lb (24 kg) of Part A and 5 gal (18.9 L) 45 lb (20.4 kg) of Part B, 16 box sets per pallet
Product Details
APPROVALS / STANDARDS
- FM Global
- Underwriters Laboratories
- ICC Code Compliant – ESR 1157
- Miami-Dade County
- Florida Building Code
Chemical Base
Liquid
Shelf Life
18 months if stored properly in original unopened, sealed and undamaged packaging.
Storage Conditions
Store in a cool, dry location at temperatures between 55°F (12.8°C) and 85°F (29.4°C). Protect from freezing at all times. Keep containers closed. Contamination by moisture or basic compounds can cause dangerous pressure build-up in a closed container.
Volatile organic compound (VOC) content
32 g/L (Part A + B Combined)
Application
Coverage
Application rates vary depending on surface roughness and absorption rate of the substrate. Typical coverage rates when used on:
- Structural Concrete is up to 2.5 squares per gallon
- Mineral Surface Modified Bitumen is up to 1.7 squares per gallon
- Approved Sika Vapor Retarders and Ply Sheets are up to 1.7 squares per gallon
- Polyisocyanurate insulation and high density polyisocyanurate roof boards are up to 2.5 squares per gallon
Rates are based on an application pattern of ribbons 12" (30 cm) o.c.
SUBSTRATE PREPARATION
All surfaces must be clean, dry, and free of dirt, grease, oil, or other contaminants or particulates. All concrete surfaces must be cured prior to applying Sarnacol® OM Feltback Membrane Adhesive.
APPLICATION
SpotShot Applicator:
Remove the plastic plugs from the cartridge mixing head. Attach a mixing tip to the threaded mixing head. Place the cartridge into the applicator. When starting a new cartridge, dispense some adhesive into a bucket or other suitable receptacle to achieve a proper mix. Apply the adhesive directly to the substrate, using a ribbon pattern. Space the 3/4– 1" (19 – 25 mm) wide beads at a maximum of 12" (30 cm) o.c. to achieve proper coverage rate. Actual ribbon spacing will depend on the wind uplift rating required. Allow the adhesive to turn to a caramel color (normally 3 – 5 minutes) before placing the feltback membrane into the adhesive. The adhesive is designed to provide approximately 4 – 8 minutes of open time during a typical summer day. The membrane must be positioned and rolled into place quickly. A minimum 75 lb (34 kg) steel roller must be used to roll the membrane.
PaceCart2 Installation:
Install Part A and Part B components following instructions on the packaging. Always insure that the Part A and Part B containers are always
hooked to the same dispensing holders or hoses (i.e. do not reverse the dispenser holders and hoses between Part A and Part B). All valves on the dispensing unit must be completely opened so a 1:1 ratio is achieved when moving the adhesive through the disposable mix tip and onto the substrate in a semi-liquid state. When starting a new box set, dispense some adhesive into a bucket or other suitable receptacle to achieve a proper mix.
Apply the adhesive directly to the substrate, using a ribbon pattern. Space the 3/4 – 1" (19 – 25 mm) wide beads at a maximum of 12" (30 cm) o.c. to achieve proper coverage rate. Actual ribbon spacing will depend on the wind uplift rating required. Allow the adhesive to turn to a caramel color (normally 3 - 5 minutes) before placing the feltback membrane into the adhesive.
The adhesive is designed to provide approximately 4 – 8 minutes of open time during a typical summer day. The membrane must be positioned and rolled into place quickly. A minimum 75 lb (34 kg) steel roller must be used to roll the membrane.