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They are cylindrical profiles of closed cell polyethylene foam. They are used as a complementary material in the application of sealing products.
Sika® Joint Bottom is a suitable complementary material to define the joint depth, in order to achieve an appropriate joint factor, which is conditioned by the characteristics of the sealant.
It can be used in: traditional masonry, screen walls, heavy or light precast, floor joints, etc. with our putties:
- Sikaflex®
- Sikaflex® AT
- Sikasil®
- Sikacryl®
Advantage
- Easy handling given its lightness.
- Good resistance to most solvents and chemicals.
- Low water absorption.
- Good thread break.
- Non-stick supplement to all Sika putties. In this way they make it easier for them to work only horizontally, free of all bottom tension.
- Heat-weldable.
Presentation
| Diameter (mm) | Contents Box (m.l) | Presentation |
| 6 | 2500 | solid |
| 10 | 1150 | solid |
| 15 | 550 | solid |
| 20 | 350 | solid |
| 25 | 200 | solid |
| 30 | 160 | solid |
| 40 | 270 | 2 m strips, solid |
| 50 | 180 | 2 m strips, solid |
Characteristics
- Appearance / Color: Gray
- Chemical composition: Closed cell polyethylene foam.
- Density: ~ 35kg / m
- Thermal stability: -40 ° C to +60 ° C
Application Details
Regarding the choice of the appropriate width, widths greater than 25% of the width of the joint must be used to prevent the putty from overflowing the bottom of the joint when being trimmed to smooth it.
The installation is carried out by lateral compression of the joint bottom against the lips of the joint. It will be introduced at the previously defined depth using any auxiliary device similar to a wooden T.