Metal Waterstop for Joints
Used instead of the common PVC waterstop in situations where high performance is required, such as sealing at high pressures or extreme weather conditions.
When to use a Metal Waterstop?
Metal waterstop is the new frontier in waterproofing for construction joints. It is a galvanized steel sheet, which is used instead of the common PVC waterstop in situations where high performance is required, such as sealing at high pressures or extreme weather conditions. The advantages of using a metal waterstop solution are many: the guarantee of lasting waterproofing, resistance to high pressures even with minimum thicknesses, and reduced assembly times, due to the easy adhesion between joints which eliminates the need for welding.
The metal waterstop can be fixed to the upper layer of the reinforcement by means of special fixing clips or through its feet, for the models that have them. The reduced thickness compared to conventional waterstops is compensated by the sheet coating.
We have different types of metal waterstop for joints, in rolls and strips, with different fixing systems and different coating materials, in order to be able to effectively respond to all construction needs. The solution in rolls further reduces assembly times, because it minimizes seams. Depending on the models, the heights of the metal waterstop can be 80 mm, 120 mm, 140 mm or 160 mm.
Our Models
Metal Waterstop lw-01
LW01 in strips (length 2.4 m): height 80 mm and 160 mm
LW01 in rolls (length 20 m): height 120 mm, 160 mm and 240 mm
LW01 in rolls with fixing feet (length 20 m): height 160 mm
Metal Waterstop lw-02
It is also a galvanized steel sheet coated on both sides, but unlike the LW-01 model, it has a whole fixing rail at the base, to make mounting on the armature even more practical and faster.
The width of the fixing rail is 20 mm, and the bars are standard 2.50 m long. The cover is protected by a film which must be removed before assembly.
Metal Waterstop LW-03 with Bentonite Coating
This special joint plate is made with one side fully coated with bentonite. This hydrophilic coating is placed on the side exposed to water, and provides additional protection that makes the product extremely performing.
The sheet is supplied in rolls of 10m length and has a height of 160mm. It is fixed to the armor with the appropriate clips.
Installation of Metal Waterstop
Positioning the joint in place
The laying of the metal waterstop is extremely fast: just unroll the product or position the strips, taking care to remove the protective film as late as possible. In the case of metal waterstop with coating on one side only, it is advisable to position it with the coated side on the side where water can infiltrate. Before casting, the sheet metal is fixed to the horizontal reinforcement with the appropriate clips or with feet or guides (depending on the model), taking care to cover the entire working joint, creating a closed system. It is important that overlaps are made, and that the sheets are not simply juxtaposed. Corners can be easily made by bending the metal sheet.
Removing the protective film
The protective film on the metal waterstop is divided in two parts. The lower part is removed then the slab is cast, while the upper part is removed just before making the second cast. This not only simplifies the construction process but also enhances safety measures by minimizing the risk of damage to the waterstop during various stages of the project. This thoughtful design ensures that the metal waterstop remains robust and reliable, providing long-lasting protection against potential water leaks and structural instability. Additionally, by following the specific instructions regarding the removal of each film part, construction teams can maintain a high level of precision and efficiency, resulting in successful and resilient structures.
