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One-Component Sealing and Penetrating Polyurea Primer for Concrete

BW8007

One-component penetrating polyurea primer for outdoor tile, concrete, stone, ceramic tile and wood substrates. It helps wet the surface, seal pores and improve adhesion before compatible protective coating systems.

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Prepared outdoor tile rooftop surface after primer sealing

Product Description

BW8007 One-Component Sealing and Penetrating Polyurea Primer for Concrete is formulated with high-performance polyurethane resin prepolymer as the main film-forming material. It cures after absorbing and reacting with atmospheric moisture, featuring high fluidity and strong penetration into substrates, along with good sealing performance and high adhesive strength. The coating film is environmentally friendly and easy to apply. It has been widely used on concrete and other substrates to effectively enhance the overall performance of subsequent coatings.

BW8007 concrete sealing penetration primer official product packaging image

Application Scope

BW8007 is used as a substrate-surface anticorrosion coating and sealing primer for concrete, marble, ceramic tile and wood substrates before compatible follow-up coatings.

  • Concrete SubstratesSealing and penetrating primer review for compact, dry and prepared concrete before protective coating systems.
  • Ceramic Tile and MarbleSurface wet-out and adhesion support for firmly bonded, clean tile or marble substrates after preparation review.
  • Wood SubstratesCompatible prepared wood surfaces can be reviewed where sealing, wetting and following-coat compatibility are confirmed.
  • Following CoatingsUse BW8007 only with compatible coating layers and within the listed recoating interval.

Designed to Improve Substrate Sealing Before the Protective Layer

BW8007 helps applicators prepare a more stable primer interface on suitable project substrates by improving surface wet-out, sealing penetration and adhesion support before compatible follow-up coatings.

2.9 MPaAdhesive StrengthLists adhesion data on dry concrete surfaces after proper substrate preparation.
-40 to +150°CTemperature VariationThe listed 24 h temperature-variation test result is normal under the stated condition.
1.02 g/cm³DensityProvides listed density data for primer material comparison and system planning.
30 dAlkali ResistanceLists no corrosion, blistering or peeling under the stated 50% NaOH test condition.

Product Features and Advantages

BW8007 focuses on one-component primer handling and substrate wet-out, helping seal surface pores, improve primer-side adhesion and create a more uniform interface before compatible follow-up coating systems.

Film Formation and Substrate Wet-Out

  • One-Component HandlingNo component-ratio mixing is required, reducing the risk of proportioning error during primer application.
  • Low Viscosity and High FluidityThe technical sheet lists low viscosity and high fluidity for substrate wetting and penetration support.
  • Sealing and PenetrationHelps seal prepared substrate pores and create a more uniform primer interface before the following coating.
  • Wetting PropertySupports wet-out of prepared concrete, tile, marble and compatible substrate surfaces.
  • Coverage PlanningThe listed theoretical coverage helps estimate primer use at 40 micrometers film thickness.

Following-Coat Support

  • Adhesion SupportDesigned to improve adhesive strength between the prepared substrate and compatible following coating film.
  • Bubble ReductionThe primer helps reduce bubble risk by sealing prepared substrate pores before the next coating layer.
  • Water and Moisture ResistanceThe technical sheet lists waterproof and moisture-resistance performance for project review.
  • Anticorrosion SupportCan be reviewed as part of the substrate-surface anticorrosion coating route described in the technical sheet.
  • Compatibility ReviewConfirm compatibility with the following coating film and project exposure before full application.

Technical Data

These technical values are measured under controlled laboratory conditions to support product comparison, project selection and specification review. Please confirm final requirements with the latest approved TDS and project-specific conditions.

Product Information

BW8007 product information
ItemResult
AppearanceTransparent colorless
Specific gravity (g/cm³)1.02
Viscosity (cps) @ 25°C210
Solid content (%)≥65
Surface dry time (h)1-3
Recoating interval (h) @ 25°C3-24
Pot life (h)1
Theoretical coverage (DFT)0.08 kg/m² film thickness 40 µm

Physical Properties

BW8007 physical properties
ItemTest standardResult
Adhesive strength (dry concrete surface)ASTM D-33592.9
Impact resistance (kg.cm)GB/T 23446-200960
Abrasion resistance (750 g / 500 r) mgGB/T 23446-200912
Temperature variation (-40 to +150°C) 24 hGB/9278-1988Normal
Density g/cm³GB/T 6750-20071.02

Chemical Resistance

For reference: pay attention to the influence of ventilation, splash and spillage. Independent immersion testing is recommended if other specific data is required.

BW8007 chemical resistance data
Exposure itemResult
Acid resistance 40% H2SO4 or 10% HCl, 30 dNo corrosion, no blistering, no peeling
Alkali resistance 50% NaOH, 30 dNo corrosion, no blistering, no peeling
Salt resistance 50 g/L, 30 dNo corrosion, no blistering, no peeling
Salt spray resistance 1000 hNo corrosion, no blistering, no peeling
Oil resistance 0# diesel, crude oil, 30 dNo corrosion, no blistering, no peeling

Application Environment and Guide

Stable primer performance depends on substrate dryness, site conditions, material handling and the following coating schedule. Review the application environment and guide values before installation, and confirm final parameters with the latest TDS and project requirements.

Application Environment

BW8007 application environment
ConditionRequirement
Environment temperature-5°C to +35°C
Relative humidity35-85% RH
Dew point≥3°C
Concrete substrateFully cured, clean, dry, dense and free from grease or stains
Damaged areas and cracksRepair before primer application
Surface dust removalUse air grinding or vacuum cleaning before BW8007

Application Guide

BW8007 application guide
Guide itemRecommendation
Recommended dry film thickness20-40 µm
Theoretical coverage reference0.08 kg/m² at 40 µm
Recoating interval time3-24 h at 25°C
Recommended coating methodBrush, roller, airless spray or air spray
Opened-material handlingPour only the amount needed and use poured material within 1 hour
Dilution controlDo not add thinner without manufacturer guidance

Application Note

  • The concrete surface must be completely dry, clean and compact with no grease or stains. Obvious cracks or damaged areas should be repaired in advance.
  • Clean the surface by air grinding or vacuum method before applying BW8007.
  • This product can be applied at -10°C. For very low-temperature application, keep material drums in an air-conditioned room for more than 24 h.
  • Agitate the coating uniformly before application and use the poured material within 1 hour. Do not pour remaining liquid back into the original bucket.
  • The product viscosity is set at the factory. Do not add thinner without manufacturer guidance.

Product Curing Time, Shelf Life and Packing

Use the listed curing profile, shelf life, packing and storage requirements for application scheduling, warehouse handling and order planning.

Product Curing Time

The curing time varies with the environment condition, especially temperature and relative humidity.

BW8007 curing time
Substrate temperatureSurface dry timeFoot trafficSolid cure time
+10°C6 h24 h7 d
+20°C3 h12 h7 d
+30°C2 h8 h7 d

Shelf Life & Packing

BW8007 shelf life and packing
ItemDetails
Storage temperature5°C-32°C
Shelf life10 months from the date of production in sealed condition
Packing5 kg/bucket; 20 kg/bucket
Package requirementKeep the product package tightly sealed
Storage precautionStore in a cool, ventilated place, avoid direct sunlight and keep away from heat

Product Health and Safety Information

Product Health and Safety Information

For information and advice on the safe handling, storage and disposal of chemical products, users shall refer to the most recent Safety Data Sheet containing physical, ecological, toxicological and other safety-related data.

Integrity Declaration

Colorful Whale Advanced Materials (Shanghai) Co., Ltd. guarantees that the technical data stated in this sheet is based on laboratory tests. Actual testing methods may vary due to different circumstances. Users should test and verify applicability. Colorful Whale Advanced Materials (Shanghai) Co., Ltd. does not take any other responsibility except product quality and reserves the right to modify the listed data without prior notice.

BW8007 Frequently Asked Questions

Review the main substrate, application, recoating and document questions before specifying or ordering BW8007.

BW8007 is a one-component moisture-curing sealing and penetrating polyurea primer for prepared concrete, marble, ceramic tile, wood and compatible substrates before follow-up coatings.

The technical sheet positions BW8007 as a sealing and penetrating primer for concrete, marble, ceramic tile and wood substrates. Existing tile use still requires substrate condition and adhesion review.

BW8007 is used to improve substrate wetting, sealing penetration and adhesive strength so the following compatible coating layer has a more stable base.

No A/B component proportioning is listed for BW8007. It is a one-component material, but it should still be agitated uniformly before application and used within the listed opened-material period.

The technical sheet lists theoretical coverage of 0.08 kg/m² at 40 micrometers film thickness, a 3-24 h recoating interval at 25°C and a 1 h opened-material use period.

Check that the substrate is dry, clean, compact and free of grease or stains. Cracks or damaged areas should be repaired before cleaning by air grinding or vacuum method.

Buyers can request the latest TDS, SDS, packing information, compatibility review and project-specific application guidance before ordering.

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