Sika PostFix®
Easy-to-Prepare, mix-in-the-bag, fast-setting, expanding polyurethane foam for post installation
Sika PostFix® is a two-part, pre-proportioned polyurethane resin which when mixed produces an expanding foam. It has been specifically formulated and packaged to provide a lightweight, mix-in-the-bag, and fast-setting backfill for wooden, PVC and steel in-ground supports. Sika PostFix® is based upon Sika’s proven foam technology and designed for easy, convenient and quick support of many types of posts.
- Light weight and easy to handle
- Simple application - just roll, mix and pour
- Pre-portioned for quality control and consistent performance
- Sets in 3 minutes (varies with temperature), allowing faster placement
- Seals and protects base of post
- Compatible with use in cold conditions without the need for additives
- Ideal for wooden, PVC, steel, aluminum
Usage
- Fence gate posts
- Mail box posts
- Signage posts
- Lamp posts
Advantages
- Light weight and easy to handle
- Simple application - just roll, mix and pour
- Pre-portioned for quality control and consistent performance
- Sets in 3 minutes (varies with temperature), allowing faster placement
- Seals and protects base of post
- Compatible with use in cold conditions without the need for additives
- Ideal for wooden, PVC, steel, aluminum
Packaging
33 fl. oz. (976 ml) pouch, 10/case
Color
Light Green
Product Details
Shelf Life
1 year in original, unopened packaging
Storage Conditions
Store at 41 to 89 °F (5 to 32 °C). It is very important to condition material to 65 to 77 °F (18 to 25 °C) for at least 2 hours before using as high heat can cause bag to burst and cold temperatures can cause shrinkage. Protect from freezing and high heat and do not use damaged or opened bags. If frozen or damaged, discard
Service Temperature
-22 to 130 °F (-30 to 54 °C)
Application
Cure Time
Initial Set: 3–5 minutes
Final Set: 2 hours
Coverage
| Hole Diam.* (in) | Hole Depth* (in) | # of Pouches | |
| Round Post | |||
| 2 in. | 6 | 46 | 1 |
| Square Post | |||
| 4 in. x 4 in. | 8 10 | 36 36 | 1 2 |
| 6 in. x 6 in. | 10 | 48 | 2 |
*Always refer to local frost depths and building codes for guidance.
Coverage
Approx. 0.7 ft3 (20 L) of expanded foam per pouch
SUBSTRATE PREPARATION
FOR OUTDOOR USE ONLY. Using a post hole digger or auger, dig the hole to the proper depth (depends on post size, soil conditions and frost depths) and diameter (refer to the Examples in the Technical Data section). Make sure that the post is adequately positioned in the hole. The post should stand straight and level and be either braced or held before mixing the material. If there is standing water in the hole, backfill partially with soil or gravel until water is no longer visible or pump the water out. Keep material between 65 and 77 °F (18–25 °C) for at least 2 hours before mixing and use. Sika PostFix® will react faster in warmer temperatures.
MIXING
Before mixing: Wear safety goggles. Wear chemically resistant gloves. Have product pouch and scissors directly next to the hole and be ready to cut the corner of the pouch where indicated after 15 seconds mixing time is completed. Always keep the cut line pointed away from your body.
NOTE: Do not mix the product away from the application area. All mixing must be done outdoors immediately adjacent to hole. Roll the pouch, starting at the compartment containing Component A, working towards the ‘burst seal’ in the direction of the arrows shown on the back label. Apply pressure to the rolled section to rupture the seal and allow Component A to flow into the compartment containing Component B. Keep away from face at all times. Mix thoroughly by then rolling out the pouch and rubbing the bag along a table edge or any 90 degree surface (no sharp edges). Mix for 15 seconds only by forcing the material to travel inside the bag, from one end to the other (using a “shoe shining” technique). CAUTION! DO NOT EXCEED THE 15 SECONDS MIXING TIME AS THE MATERIAL IN THE POUCH WILL EXPAND CAUSING THE POUCH TO BURST AND SPRAY CONTENTS, RESULTING IN POSSIBLE BODILY INJURY OR PROPERTY DAMAGE.
CLEANING OF TOOLS
Remove excess material immediately before cure using either a solvent-based cleaner or clean cloth to remove splatters of uncured material. Strictly follow the solvent manufacturer's warnings and instructions for use. Dispose of in accordance with local regulations.
Hardened/cured material can only be removed mechanically with a hand tool.