Vandex Expaseal B Plus - Expanding Waterstop (16x21mm) for Waterproofing Pipe Inlets and Construction Joints

Vandex Expaseal B Plus is used to waterproof construction joints or pipe inlets in concrete structures exposed to permenent or temporary hydrostatic water pressure (e.g. basements). When in contact with water Vandex Expaseal B Plus expands more than 300% to form a positive seal against the concrete surrounding the construction joint which is resistant to water pressure up to 7 bar.

The example below shows a typical reinforced concrete basement. Expaseal B Plus is fixed to the concrete slab before the concrete wall is poured using Vandex Uniflex adhesive. Expaseal B Plus is also used to form a seal between wall sections poured at different times.

Rain Protection Coating

When using expanding waterstops it is essential to ensure that the waterstop does not have a chance to swell before it is covered in concrete. This can occur, for example, when the waterstop is fixed in place on a concrete slab and there is a period of rainfall before it is possible to pour the wall sections.

Vandex Expaseal B Plus gets round this problem as it is covered in a waterproof coating, protecting it from rainfall for a period of 2-3 days. Once the Expaseal B Plus is covered in concrete, the alkalinity of the concrete dissolves the coating allowing the waterstop to function normally.

Crystalline Active

Vandex Expaseal B Plus contains crystalline active additives similar to those found in Vandex Super which enhance its waterproofing properties.

NBS Clauses

Suggested NBS specification clause: E40-310

Visit our NBS page for further information on specifying Safeguard products using NBS.

CAD Details

Visit our CAD Drawings page to download CAD details in AutoCad (DWG), TurboCAD (TCW) and Adobe Acrobat (PDF) formats.