Tytan corrugated waterproofing membrane for vertical foundation insulation 1.5 m x 20 m

Tytan corrugated waterproofing membrane for vertical foundation insulation 1.5 m x 20 m is a dimpled drainage sheet designed to protect foundation walls from moisture, ground pressure and backfill contact. Supplied as a 1.5 m by 20 m roll, the membrane creates an air gap between the structure and soil, facilitating water drainage away from the foundation and reducing damp transfer into walls. It is intended for use on vertical surfaces during new construction or repair work to improve damp-proofing and extend the service life of below-ground concrete and masonry.

Advantages

The dimpled profile forms a continuous drainage channel that guides water down to drainage pipes or gravel layers, reducing hydrostatic pressure at the wall surface. The membrane is flexible enough to conform to uneven foundation surfaces while providing mechanical protection against backfill abrasion. Its roll format allows for fast onsite application and overlap detailing. The product is compatible with common waterproofing layers and can be combined with external insulation systems.

Suitable for

• Vertical foundation walls in new builds
• Repair and renovation of existing foundations
• Beneath external cladding or backfill to provide drainage
• Protection of basements and cellar walls from moisture ingress

When it may not be suitable

This membrane is not a primary waterproofing layer for structures subject to continuous positive water pressure from the inside of the wall; it functions as a drainage and protective layer in conjunction with a waterproofing membrane applied directly to the structure. It may not be appropriate where local building codes require different waterproofing methods or where chemical resistance beyond typical soil conditions is necessary.

Key specifications

• Format: roll; width 1.5 m, length 20 m
• Surface: dimpled/corrugated profile creating an air gap for drainage
• Function: drainage channel and mechanical protection for vertical foundations
• Compatibility: suitable for use with standard external waterproofing and insulation systems

How to use

Install the membrane on a prepared, clean and vertical foundation wall with the dimples facing outward to create the drainage cavity. Secure the upper edge to the wall with appropriate mechanical fasteners or a top profile, and overlap adjacent sheets according to the manufacturer’s guidance to ensure continuous drainage. Route collected water to an external drainage system or gravel-filled trench at the footing level. Backfill carefully with free-draining material to avoid damaging the membrane surface.

What to consider before purchase

• Required roll coverage: calculate surface area including overlaps
• Compatibility with existing waterproofing layers and external insulation
• Type of backfill material and drainage provisions at the footing
• Local building code requirements for foundation waterproofing

Usage recommendations

For reliable results use this corrugated membrane together with a continuous applied waterproofing layer and a properly designed footing drainage system. Ensure overlaps and terminations are sealed or directed to the drainage channel, and protect the membrane during backfilling to maintain drainage function.