How long before water immersion testing?

Water immersion tests should be conducted >= 72 hours after completion. Full strength is reached after 7 days.

What primer should be used before G2?

For absorbent or porous substrates, LANGUAN-690 sealing primer or a suitable interface agent can improve adhesion. On dense concrete, proper cleaning and SSD pre-wetting are usually sufficient.

Two-Component Highly Flexible Waterproof Mortar

Name: Two-Component Highly Flexible Waterproof Mortar
Brand: Shanghai Languan New Building Materials Co., Ltd
SKU: 1996752281

Shanghai, ChinaShanghai Languan New Building Materials Co., Ltd

US$39.00

100 Bags

Sample price:US$0.00/bag.Request sample

Product profile

Customization

Available

Application

Commercial Construction, Infrastructure Projects, Residential Construction

Color

Gray

Model NO.

Setting Time

Normal-Setting

Special Additives

Acrylic Polymer Emulsion

Type

Two-Component Flexible Waterproof Mor

Solids Content

≥75%

Tensile Strength

≥2.2MPa

Elongation at Break

≥120%

Application Temperature

5c - 35c

Total Thickness

1.2 - 1.5 mm Per System

Transport Package

Bag

Specification

25 KG/BAG

Trademark

Lan Guan

Origin

China

Key features

120% Elongation at Break: the cured film stretches up to 120% and bridges cracks up to 2 mm, so the waterproof layer stays intact under thermal movement, settlement, and vibration.

Bidirectional Waterproofing: effective on both positive (water-facing) and negative (non-water-facing) sides, making it ideal for basement

0.3 MPa Hydrostatic Pressure Resistance: passes a 30-minute impermeability test at 0.3 MPa with zero leakage, meeting demanding underground and pool requirements.

>= 1.0 MPa Bond Strength on Wet Substrates: adheres firmly to damp concrete and mortar without hollowing or peeling, reducing substrate drying downtime

Potable-Water Safe: water-based, non-toxic, odorless, and solvent-free; certified safe for drinking water tanks and enclosed indoor spaces.

Superior Alkali & Weather Resistance: retains >= 85% tensile strength after 168 h alkali immersion and resists UV, acid, and aging for long service life.

Seamless Film on Complex Details: brush, roller, or trowel application forms a continuous membrane around corners, pipes, and cracks where sheet membranes are hard to install.

Dual Waterproofing + Bonding Function: the rough textured surface enhances adhesion for subsequent tiles or plaster, eliminating the need for a separate bonding coat.

Wide Application Range: suitable for basements, roofs, balconies, kitchens, bathrooms, swimming pools, water tanks, bridges, and subway tunnels requiring high flexibility.

Company profile

High Repeat Buyers ChoiceFast DeliveryFull CustomizationQuality Assurance

Shanghai Languan New Building Materials Co., Ltd

Shanghai, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 10 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤2.41h

AI-Powered supplier vetting

SummaryShanghai Languan New Building Materials Co., Ltd. is described as a developer, manufacturer, and seller of environmentally friendly building decoration materials. Its stated scope covers building materials, floor-related solutions, machinery and equipment, hardware, chemical products, communication equipment, and import/export and technical services. The supplier reports OEM service for well-known brands, quality assurance, documented complaint-handling and corrective-action procedures, and facilities including mixing, self-leveling, and automatic packaging lines. However, it has no available SDK, no stated AI-based decision-management practice, no inventory capability, no overseas warehouse or showroom, and no valid manufacturing-capacity contract with affiliated subcontractors. Financial information is limited to years identified as 2021–2023 without performance values. Certification, customer cases, and detailed customization evidence are not sufficiently documented.

Supplier typeThe supplier is presented as Shanghai Languan New Building Materials Co., Ltd., focused on R&D, production, and sales of environmentally friendly building decoration materials. Its business scope includes building materials, insulation materials, sealing fillers, cement products, machinery, hardware, chemical products, and related sales and import/export activities, supporting classification as a building-material manufacturer and supplier.

After-Sales capabilityThe supplier reports clear procedures and records for corrective and preventive actions and customer complaint handling, and describes providing technical guidance and comprehensive customer services. However, it lacks overseas warehouse and showroom capabilities, so the evidence supports structured service handling but not broad overseas after-sales infrastructure.

R&D capabilityThe company describes R&D activity and the ability to develop new materials using existing technology, and its culture emphasizes innovation. However, it explicitly has no available SDK and has not established an AI model for big-data decision support; these limitations prevent a broad conclusion that its innovation capability exceeds requirements.

Production capacityThe supplier states that it conducts production and lists processing and manufacturing activities, with a mixing line, self-leveling production line, and automatic packaging robot. Quality assurance and documented corrective-action procedures are also reported, although there is no valid contract with affiliated subcontractors and no in-stock capability.

Customization capabilityThe supplier reports OEM services for well-known brands and says it provides solutions for difficult floors, technical guidance, and development of various new materials using existing technology. This directly supports some customization and OEM capability, although the slices do not specify product scope, minimum quantities, lead times, or engineering resources.

Product Q&A

Q:Can G2 be used for negative-side waterproofing?

Yes. G2 is designed for both positive (water-facing) and negative (non-water-facing) sides. It withstands negative water pressure >= 0.6 MPa (product >= 0.8 MPa), making it ideal for basements and tunnels.

Q:What is the recommended application thickness?

Apply in 2-3 thin coats. The total system thickness is usually 1.2-1.5 mm. Each coat should be thin and uniform; subsequent coats should be applied perpendicular to the previous layer.

Q:Can G2 be applied on damp substrates?

Yes, G11 can be applied on damp (non-standing water) substrates. The surface should be pre-wetted to SSD (saturated surface dry) condition - moist but with no standing water.

Q:What is the mixing ratio?

The recommended ratio is Liquid : Powder = 1 : 1.5 - 2.5 by weight. Pour liquid into the mixing container first, then slowly add powder while stirring mechanically for 3-5 minutes. Let stand for 3 minutes and remix briefly before use.

Q:Is G2 safe for drinking water tanks?

Yes. G11 is water-based, non-toxic, odorless, and solvent-free, making it safe for potable water tanks and enclosed indoor spaces when fully cured.