Zhengtai Waterproofing materials company was established in 2001 year with the registered capital of 1 billion , covering area of 60000 square meter .
The standard approach for the application of APP membrane
It is imperative to thoroughly clean and prepare the surface prior to the application of the APP membrane. This process includes the removal of any dust, debris, or loose materials from the substrate. A clean and smooth surface is crucial to ensure optimal adhesion of the membrane.
In certain situations, a primer may be applied to improve the adhesion of the APP membrane to the substrate. The selection of primer is contingent upon the specific substrate material and environmental conditions. Typically, the primer is allowed to dry before further application.
APP membranes are generally applied using a torch method. The underside of the membrane features a thermofusible film that, when heated, establishes a robust bond with the substrate. Roofing professionals meticulously heat the membrane with a propane torch while rolling it out onto the prepared surface. In torch-down roofing, the membrane is heated and subsequently pressed onto the substrate to ensure effective adhesion.
Each roll of APP membrane should overlap with the adjacent roll to form a watertight seal. The width of the overlap is determined by the manufacturer’s specifications, typically around 3 inches (7.5 cm). To secure the bond between the overlapping sections, a roller is utilized or hand pressure is applied.
Special attention is given to critical areas such as corners, penetrations (vents, pipes, etc.), and edges, where waterproofing is essential. To strengthen these regions and prevent water ingress, additional membrane layers or flashing details may be employed.
Upon completion of the membrane application, a final inspection is conducted to verify proper adhesion, seams, and details. Any defects or areas needing further attention are promptly addressed and rectified.
To safeguard the APP membrane from UV radiation, physical damage, and weathering, a protective layer such as gravel, pavers, or a reflective coating may be added, depending on the specific project requirements and application.
Zhengtai® serves as the primary resource for advice on the application methodology of APP membrane, encompassing the selection of suitable materials and techniques tailored to specific projects.
With our extensive knowledge in construction materials and waterproofing solutions, we are a reliable partner for fulfilling your waterproofing requirements.
