Elastic waterproof butt strap, 12 cm wide, coated with fabric

Code: PRS.0237

Components: 1

Appearance: Tape

Waterproof butt strap, consisting of a expandable elastomeric rubber, entirely coated on both sides with absorbent fabric, with an overall width of 12 cm. The product is distinctive for its simple and easy application, the ascertained watertightness to water and the high deformation capacity.

Linee di appartenenza

General characteristics


Width: 120 mm


Shelf-life: 24 months




Temperature of use: -30 / +90 °C

Technical specifications


0.7 mm

Power absorption at 50% elasticity lateral

0.34 N/mm

Breaking load lateral

23 N / 15 mm _

Longitudinal elongation at break

70 %

UV resistance

500 h

Extension break lateral

335 %

Breaking load longitudinal

104 N / 15 mm _

Resistance to water pressure

>1.5 bar

Power absorption at 25% elasticity lateral

0.31 N/mm

Available colours

- Gray

Packaging and dimensions

- Roll 10 m

- Roll 50 m


Unlike ELASTOTEX 120, where the elastic part is represented exclusively by the central part of the product (8 cm wide), the entire width of ELASTOTEX 120 CLOTH consists of an elastomeric material (12 cm), allowing a greater maximum expansion and adaptation to structural movements. In addition, the entire width of the band is lined with absorbent fabric, so it can be impregnated on a more extended portion of its surface, ensuring superior adhesion to the support.


1.1 m/m: 1 metre of ELASTOTEX 120 CLOTH for each linear metre, being careful to overlap the rolls of approximately 5-10 cm in correspondence with the edges of the band to guarantee the permanent water tightness of the system.

Use fields

Connection of waterproofing surfaces adjacent to joints in structures or artefacts subject to thermal or dynamic movements, particularly suitable in waterproofing coating interventions that interweave the use of OSMOCEM FLEX or OSMOCEM D.

Preparation of supports

The application surfaces should be clean, free of incrustations, dust and non-adhering parts, carefully roughened.

Use method

Previously apply OSMOCEM FLEX or OSMOCEM D on the laying surfaces (with a layer of average thickness not less than 2 mm), for a width greater than that of the ELASTOTEX 120 CLOTH butt. Lay the strap and press it appropriately in the prepared osmotic mortar, ensuring the incorporation of the latter (for the whole width of the strap) in the fabric that covers it. Complete the coating with OSMOCEM FLEX or OSMOCEM D.

Application methods

- Apply by hand

- Brick trowel

- Spatula

Permitted supports

- Concrete

- Floor screed

- Prefabricated concrete

- Tiles

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