Terrace waterproofing is a crucial aspect of construction engineering, primarily aimed at preventing the penetration of external moisture like rain and snow into the building interior, thereby safeguarding the structure, interior facilities, and residents' property.

The Importance of Terrace Waterproofing

Protecting Property: The terrace waterproofing directly faces the侵蚀 of natural elements such as rain and snow, with its effectiveness directly concerning the safety and protection of residents' property.

Enhance Living Comfort: Effective roof waterproofing prevents moisture intrusion, keeping indoor air dry, and preventing issues like mold and mildew, thereby improving living comfort.

Ensure Structural Stability: Water is the archenemy of construction materials. Poor waterproofing can lead to erosion of load-bearing structures like walls and columns, potentially causing cracks and deformation, affecting the long-term stability and safety of the building structure.

Energy-saving and environmental protection: Preventing roof leakage reduces energy loss, improves the thermal insulation of buildings, and simultaneously avoids rainwater from entering the groundwater system, minimizing water waste and pollution.

II. Primary Methods for Terrace Waterproofing

Roll-on Waterproof Roofing Membrane

Definition: A roofing system that uses various construction techniques to bond different types of adhesive materials to a roll, fixed on the roof surface for waterproofing purposes.

Materials: Including traditional asphalt waterproof membranes, high polymer modified asphalt waterproof membranes, and synthetic polymer waterproof membranes, etc.

Construction Steps: Base preparation (cleaning, flushing, drying) → Leveling layer construction (cement mortar leveling) → Membrane laying (pay attention to direction, interface treatment) → Protective layer construction (adding insulation layer, cement mortar protective layer, etc.).

Coating Waterproof Roofing

Definition: A waterproofing roof system that involves applying a waterproofing coating to the base layer of the roof, which, after curing, forms a cohesive film with a certain thickness and elasticity, thereby achieving the purpose of waterproofing.

Construction Steps: Base Treatment (inspect the quality and dryness of the leveling layer) → Waterproof Coating Application (apply multiple coats to achieve the designed thickness, ensuring evenness) → Sealing End Treatment (apply multiple coats of waterproof coating for dense sealing or use sealing material to press and seal the edges) → Protective Layer Application (select different protective layer materials as needed).

Rigid Waterproof Roofing

Definition: A waterproofing layer for roofs, made by pouring concrete, which is made dense and compact by adding admixtures to achieve the purpose of waterproofing.

Construction Steps: Level and compact the base → Lay an isolation layer (such as dry fine sand, plastic film) → Configure the steel mesh (as per design requirements) → Pour concrete (pay attention to pouring sequence, vibration and compaction) → Cure and finish treatment.

III. Selection of Terrace Waterproofing Materials

Rubber Waterproof Film: Offers excellent weather and corrosion resistance, suitable for various roofing types.

PVC Waterproof Film: Excellent elasticity, corrosion resistance, and weather resistance, with high puncture resistance and chemical resistance.

HDPE Waterproof Film: High-density polyethylene material with excellent chemical resistance, UV resistance, impact resistance, and aging resistance.

Liquid Polyurethane Waterproof Coating: Single-component polyurethane water-based coating with strong adhesion and excellent weather resistance, suitable for various types of roofing.

Bituminous waterproofing materials: Economical and practical, featuring excellent waterproofing properties and weather resistance.

Polymer Waterproof Coating: Made from a blend of polymer resins and fillers, the resulting waterproof layer is robust and durable.

Section 4: Precautions

Substrate Treatment: Ensure the substrate is flat, dry, and free of defects, as this is the foundation for the quality of the waterproofing layer.

Material Selection: Choose appropriate waterproofing materials based on the type of roof, environmental conditions, and usage requirements.

Construction Quality: Strictly adhere to construction specifications and design requirements to ensure the integrity and effectiveness of the waterproofing layer.

Post-Maintenance: Regularly inspect and maintain the waterproofing layer, promptly repair any damaged or aging areas, to extend the lifespan of the waterproofing layer.