The procedure for installing an APP waterproofing membrane can differ based on the specific product and its intended use; however, it generally adheres to the following fundamental steps:

Surface Preparation:

It is essential that the surface designated for waterproofing is thoroughly cleaned, dried, and devoid of any debris, sharp edges, or protrusions that may compromise the integrity of the membrane. Any existing cracks or voids should be filled with an appropriate sealant. Additionally, any structurally compromised or crumbling concrete must be removed and repaired using a suitable repair mortar.

Application of Primer:

Attachment of the Membrane:

The method of attaching an APP waterproofing membrane to the surface may vary based on its type, often utilizing a torch for this purpose. It is essential to apply heat to both overlapping sections and to utilize a round-tipped trowel for sealing these overlaps. Smooth and press any excess compound into the seam using a heated trowel. Ensure the membrane adheres firmly, eliminating wrinkles and air pockets. Avoid excessive torching to prevent exposing the membrane’s reinforcement and causing damage.

Sealing of Overlaps, Joints, and Penetrations:

Application of Aluminium Paint (Optional):

In certain situations, particularly when the APP membrane is installed in exposed areas such as roofs or terraces, it may be coated with aluminium paint to create a reflective surface. This reflective layer aids in reducing heat transfer into the spaces below and enhances the longevity of the APP membrane. Regular maintenance of these aluminium coatings is vital to ensure their continued effectiveness. When applying aluminium reflective paint, it is important to select the plain finish variant of the membrane.

Inspection and Repair:

The installation of an APP waterproofing membrane demands meticulous attention to detail and appropriate surface preparation to guarantee a durable and effective waterproofing solution. It is advisable to engage a qualified and experienced contractor for the installation to achieve optimal results.