Winter Waterproofing Tips | Cold Weather, Key Points for Winter Waterproofing Work

Winter's extreme cold makes product storage particularly critical. Dry powder products are especially prone to moisture absorption, while liquid components in waterproof materials may freeze and deteriorate at low temperatures. Therefore, ensuring products safely pass through winter is essential. Key measures include:

1. Store products in a warm, dry place. Warehouses must be free of standing water or leaks. If possible, install moisture barriers.

2. In extremely cold areas such as underground warehouses, consider using heating systems. For other areas, use insulation materials like straw mats or foam boards to cover or isolate products.

In addition to necessary cleaning and repair, thoroughly inspect the base surface for structural defects. Check for cracks, holes, joints, and pipe edges around upper and lower water pipes. Use sealant (Jin Xin sealant) to fill and smooth gaps. Remove debris from sharp edges and ridges. For uneven surfaces with many holes, apply waterproof coating evenly and level it out. Create rounded corners at angles and joints.

Application Method: Apply coating in order from top to bottom and left to right. Ensure the coating thickness matches the recommended usage rate. Winter application requires careful control to avoid excessive thickness, which can cause uneven drying and cracking. Additionally, if the slurry is too thick or unevenly mixed, it may form lumps or bubbles.

When the base is overly dry or has high evaporation rates, some water may be needed during application. However, in winter, ambient temperatures are low, and evaporation is minimal. Thus, water content should be reduced compared to summer. To prevent the waterproof material from drying too slowly, reduce the amount of water used while keeping the base dry. Perform work in two stages: first wet, then dry.

Jin Xin sealant is a fast-setting, high-strength dry powder product highly sensitive to construction environment temperature, humidity, and water content. Special attention is required during winter work.

Due to longer curing times in winter, adjust by reducing mixing water and application amounts to ensure smooth progress. Using warm water (or hot water) to mix the material can significantly speed up curing time and improve early strength.

For newly applied polymer-modified cementitious waterproof coatings like Jin Xin Polymer Waterproof SlurryDuring applicationAfter the coating sets, begin curing. In winter, clean the surface 1–3 times daily (avoid freezing). Cure continuously for 1–2 days. After 48 hours, under non-freezing conditions, a 24-hour water test can be conducted.

Do not perform waterproofing work when ambient temperature remains below 5°C for more than 48 consecutive hours. If absolutely necessary, schedule work between 10:00 AM and 3:00 PM on sunny days, and use warm (or hot) water to mix materials and accelerate construction. Avoid freezing for at least 48 hours after completion. Prevent low temperatures during the curing period that could lead to poor curing or cracking.

In summary,

Winter waterproofing work

requires careful attention to the above details.

Additionally, cold winds bring chill and drafts, just like broken glass.

Please pay attention to insulation and protection.

Avoid being caught off guard by cold drafts and wind!

See you next time!