Waterproofing Sealants for Construction

Our polyurethane and silicone waterproofing sealants offer strong adhesion to concrete, masonry, metal, glass, and composite surfaces. Our waterproof caulking solutions can effectively prevent water infiltration, joint failure, and long-term structural damage. They are widely used in residential, commercial, and infrastructure projects. Designed for contractors, distributors, waterproofing applicators, and infrastructure developers, our sealants provide long-lasting waterproofing performance for expansion joints, facades, roofs, and industrial structures.

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Key Benefits of Waterproofing Joint Sealants

Waterproof sealants are critical in construction projects where movement joints and structural connections require durable waterproof protection.

Key performance benefits include:

Excellent adhesion to concrete, masonry, metal, and glass substrates
High flexibility to accommodate joint movement
UV and weather resistance for exterior applications
Suitable for commercial and infrastructure-scale projects
Low shrinkage after curing

Applications of Construction Waterproofing Sealant

Tengyu sealants are suitable for both vertical and horizontal joint sealing applications.

Expansion Joint Waterproofing

Expansion joints are designed to absorb structural movement caused by temperature changes, loading, and settlement.

Common applications include:

Building expansion joints
Control joints
Movement joints
Basement joints
Structural separation joints

Facade and Exterior Wall Waterproofing

Reliable waterproofing sealants protect building wall envelopes from moisture penetration.

Typical facade applications include:

Curtain wall joints
Panel joints
Window gaps
Exterior cladding joints

Roof Waterproofing and Terrace Joints

Tengyu sealants help protect roof systems from leakage and weather damage.

Typical applications include:

Terrace joints
Metal roof joints
Skylight joints

Infrastructure Projects Waterproofing

Typical projects include:

Warehouses
Bridges
Tunnels
Airports

Types of Waterproofing Sealants Solutions

Waterproof Polyurethane(PU) Sealant

TP680 Polyurethane waterproof concrete sealant is a one-component, moisture-curing, no-sagging elastic sealing adhesive. Ideal for sanitary facilities, roof and underground construction, bridges, tunnels, culverts, hydraulic engineering, joints in the roof and gutter, joints in water pipes, containers, tanks, and silos.

Key characteristics:

1. Neutral, no pollution, and curing under normal temperature, no corrosion.
2. Nontoxic and anti-mould.
3. Excellent durability.
4. High abrasion resistance and tear strength.
5. Good weathering and water resistance.
6. Good slump resistance, non-sag.
7. Apply directly on site, no need to mix.
8. Can be painted, good compatibility with paints.

Recommended uses:

1. Sealing joints in concrete, epoxy, stone, and quarry tiled floors.
2. Sealing joints in roofing and guttering, etc.
3. Flexible draught proofing.
4. Containers, water tanks, and soils.
5. Bolted lap joints.
6. Sanitary purposes
7. Connection joints between the floor/stair and the wall.
8. Connection joints between the floor and machinery.
9. Seam sealing / sealing of pipe ducts/ ventilation systems

Polyurethane sealant waterproof is often the preferred choice for contractors handling structural movement joints.

External Waterproof Silicone Sealant

TNS731 Neutral waterproof silicone sealant for concrete is a one-part, durable, neutral- cure, architectural-grade sealant. with excellent adhesion for use on a wide variety of materials in new or renovated weatherproofing applications. It cures into an elastic rubber body by reacting with moisture in the air.

Exterior Waterproof Silicone Sealant Key Characteristics:

Excellent adhesion to non-porous construction materials. No primer for most building materials such as glass, coated glass, and painted metal.
Neutral curing system, suitable for most building materials without adverse reactions or corrosion.
Excellent UV and temperature resistance, not affected by rain or snow.
High movement capability and permanent flexibility.

Recommended uses:

Window door
Glass installations
Building facade
Curtain wall sealing

Weather resistant silicone sealant provide long-term waterproof protection in exterior exposed environments.

Why Contractors Choose Tengyu Chemical Waterproofing Sealants

Reasons professionals choose Tengyu sealant:

OEM / private label with logo and carton design support
Standard packaging: 280ml cartridge / 600ml sausage / 5L–20L pail
Color matching for white / grey / black / custom RAL colors
Sample dispatch within 3–5 days for testing
Bulk supply available for project and distributor orders
Regularly shipped to overseas markets in container loads.

FAQ — Waterproofing Caulk Exterior for Contractors

Which is the best waterproofing sealant for expansion joints construction?

Polyurethane sealants are commonly used for expansion joints due to their flexibility, strong adhesion, and excellent UV resistance to structural movement.