Products
Estoproof 200
08/07/2016Estop Slip Membrane
08/07/2016
Description
Estop Backer Rod is a compressible closed cell polyethylene foam, supplied in circular cords lengths as a backup material for joint sealants.
Due to its light weight, it acts as debonding ‘tape’ between joint filler and sealant.
Uses
Estop Backer Rod performs several functions. They enable the correct width to depth ratio of the sealing slot to be obtained and provide a firm backing to ensure that sealants are forced against the sides of the joint during application. They function as a bond breaker at the back of the seal preventing additional stress on the sealant during joint movement.
Advantages
- Economical
- Easy to install
- Readily compressible
- Rot-proof and non-absorbent
- Provides bond breaker and minimum strain shape for joint sealant.
Design Criteria
Below is an example of a sealed expansion joint.
- Estoliastic / Estojoint sealant
- Estop Backer rod
Physical Properties
| Form | Compressible close cell foam circular cords |
|---|---|
| Storage life | Indefinite |
| Water absorption | Negligible |
| Colour | Grey |
| Temperature stability, °C | -40 to 60 |
| Density, kg/m³ | 35 to 40 |
Installation Instructions
Estop Backer Rod is selected oversize and push fitted into the joint. A blunt tool should be used to prevent damage to the surface skin of the cord during insertion.
The diameter of the cord should be approximately 20% to 25% larger than the width of the joint, positioned so that the required minimum sealant depth is obtained, measured at the centre of the joint.
When installed the circular section of Estop Backer Rod cords provides a convex face giving a near optimum minimum strain shape for elastomeric sealants reducing the build up of stress at the bond interface.
Packing & size
Estop Backer Rod is sold per carton. The length of each cord size contained in one carton is shown below.
| Cord diameter (mm) | Linear metres per carton |
|---|---|
| 10 | 1150 |
| 15 | 550 |
| 20 | 350 |
| 25 | 200 |
| 30 | 160 |
| 40 | 270 |
| 50 | 180 |
Technical Support
Estop offers a technical support package to specifiers, end-users and contractors, as well as on site technical assistance.
Storage
Store in dry and covered condition.
Precaution
There is no known health hazards associated with Estop Backer Rod in normal usage.
Additional Information
Estop manufactures and offers a wide range of complementary products, which includes waterstops, waterproofing products, grouts, anchors, specialized flooring products. In addition, a wide range of products formulated for repair and refurbishment of spalled concrete are available.