Skip to Content
Recent searches
      Bitumastic packshot

      CS - bitumen

      POLYBIT Bitumastic
      Bitumen rubber mastic sealant

      Bitumastic is a single component, solvent based bitumen rubber mastic joint sealant.
      • Flexible joint sealant
      • Stability at high ambient temperatures
      • Excellent adhesion, strong durable bond

      TDS (1)

      SDSS (2)

      Request a consultation
      We have you covered
      Request a consultation

      Product Description

      POLYBIT® BITUMASTIC is a single component, solvent based bitumen rubber mastic joint sealant. The sealant on curing forms a tough and flexible seal. It has excellent adhesion to concrete, brickwork, asphalt and most construction material substrates. The mastic sealant is modified with non asbestos fibres to make the sealant thixotropic and slump free when applied on vertical areas. Available Pack: 20KG/PAIL
      • Flexible joint sealant
      • Stability at high ambient temperatures
      • Excellent adhesion, strong durable bond
      • Single component
      • Do not contain asbestos, Chromated copper arsenate
        and lead
      Bitumastic packshot
      Bitumastic packshot

      How to Use

      Surface Preparation

      Surface must be free from all dirt, dust and loose material. Any oil and grease contamination must be removed completely. The surface must be made dry prior to the application of the sealant.

      Priming

      Under normal circumstances priming is not required. However, for very dry and porous surfaces, it is recommended to apply one coat of a solvent based bitumen primer (Polyprime SB)*. Similarly for joints subjected to continuous immersion, priming is recommended.

      Application

      The sealant can be applied by means of a spatula or trowel. As the product is solvented, it is recommended to mix the contents of the pail with a paddle mixer for a few minutes prior to the application to ensure a homogenous mix. Sealant application should start form the bottom of the joint/groove and continued to the top. Immediately tool the joint with the spatula or putty knife to smoothen and compress the sealant to effect total contact with joint surfaces. The putty knife shall be moistened with a cleaning solvent to prevent the sealant to adhere to the knife and ensuring a smooth and neat finish. Where masking tape has been employed to keep building surfaces clean, it is advisable to remove them at the moment the sealant filling is completed.

      Frequently asked questions

      Bitumastic is a single component, solvent based bitumen rubber mastic joint sealant.

      No. It is non-sagging

      Yes. This one is solvent based.

      Works Well With
      • ${/content/heliux/adhesive/polybit/com/en/products/waterproofing-solutions/bitumen-thin-coatings/product#/polybit-polyprime-sb/SAP_0201WEP345J0/searchResult.productFields.MainImageAltText}
        POLYBIT POLYPRIME SB

        A quick drying solvent based low viscosity bitumen primer. It is used as a primer coat on masonry and concrete substrates to improve the adhesion of bitumen based membranes and coatings. 
      • ${/content/heliux/adhesive/polybit/com/en/products/waterproofing-solutions/bituminous-membranes/product#/polybit-bitustick/SAP_0201WAP343J0/searchResult.productFields.MainImageAltText}
        POLYBIT BITUSTICK

        Self-adhesive polymer modified bituminous, waterproofing sheet membrane, laminated onto a tough HDPE film on one side and a silicone release film on the other. 
      • ${/content/heliux/adhesive/polybit/com/en/products/waterproofing-solutions/bitumen-tom-membranes-primers/product#/polybit-bituplus-e-4200/SAP_0201WBP343F9/searchResult.productFields.MainImageAltText}
        POLYBIT BITUPLUS E 4200

        Bituminous waterproofing membrane manufactured by blending a mixture of bitumen and SBS (Styrene Butadiene Styrene) polymers to obtain excellent waterproofing and low temperature flexibility properties. 

      Related Articles
      View all
      • Bitustick Cool

        The Next Generation of Performed Bituminous Coatings 
      • Foundations and Flooring Systems

        Discover, feel and touch our systems, through our mockup simulation boxes 
      • Wet Areas and Flooring Systems

        Discover, feel and touch our systems, through our mockup simulation boxes 
      • Polycryl FR

        The Ultimate Fire Rated Coating Solution 
      • Polycryl PF

        Strong UV protection For Polyurethane Foam Roof  
      • Bituplus Ultra

        The Ultimate Torch On Membrane Range 
      Sketch and drafting of a cozy house becoming real

      POLYBIT Bitumastic IS PART OF OUR BIM MODELS

      Building Information Modeling (BIM) is an innovative approach to the planning, design, construction, and management of buildings and infrastructure. This smart model is a common source of knowledge for obtaining information about a building and provides a reliable basis for decision-making throughout the entire life cycle of a building, from conception to demolition.
      FIND OUT MORE
      Polybit Logo
      PRODUCTS
      SYSTEMS
      REFERENCES
      INNOVATION
      KNOWLEDGE
      CONTACT
      ABOUT
      SERVICE & SUPPORT

      © 2026 Henkel Polybit Industries Limited