Introduction

　　The product is a new type of building waterproofing membrane made of polyester or fiberglass base, using APP as a modifier, and covered on both sides with isolation materials. It has incomparable advantages over paper-based asphalt felt; it does not flow at high temperatures, does not become brittle at low temperatures, is fatigue-resistant, aging-resistant, has good toughness, excellent waterproof performance, simple construction operation, wide environmental adaptability, can be constructed in all seasons, and has an effective waterproof lifespan of over 15 years.

Scope of Application

　　APP modified asphalt waterproofing membrane is widely used for waterproofing, seepage prevention, moisture-proofing, and gas isolation in various building structures such as roofs, walls, basements, cold storage, bridges, tunnels, water pools, underground pipelines, etc. It can also be applied for rust prevention, corrosion protection, and various moisture-proof inner packaging materials for underground pipelines.

Main Performance Indicators

　　Implementation Standard: GB18243-2008

Construction Key Points

　　● 1. Construction Tools: Generally, should include a gasoline torch or multi-head hot melt spray gun, blower, broom, mixing bucket, roller brush, bristle brush, scraper, scissors, measuring tape, steel chisel, etc.

　　● 2. Base Treatment:

　　1). The base must be strictly inspected and accepted before laying the membrane. The cement mortar leveling layer must be solid and flat, without looseness, bulging, protrusions, or severe roughness. If the flatness is poor or there is sand, it must be chiseled.

　　2). The base should be relatively dry. The moisture content should be within 9% for construction. If there is no means to measure the moisture content, a piece of felt or glass can be placed on the base surface. After 3-5 hours, check for water droplets underneath. If there are basically no water droplets, construction can proceed.

　　3). Treatment of complex areas. The inner corners should be shaped into R corners with cement mortar. For special areas prone to leakage, such as the base of pipes and drainage outlets, an additional layer of membrane should be laid, and construction should be careful and meticulous.

　　● 3. Laying and Bonding of Membrane: Position and roll out the membrane, then use hot bonding or hot melt methods to adhere the membrane. Bonding methods can include full bonding, spot bonding, or strip bonding.

　　Evenly heat the positioned rolled membrane, and once the surface melts, immediately roll it out forward. During bonding and rolling, it is important to compact and flatten to expel air. Then, before the membrane is stolen, use a trowel to seal the overlaps and complex areas of the membrane to prevent curling edges. Edge sealing can also be done with seam paste.