Sealant paints, sprays, knock-down & lock-down coatings suitable for asbestos insulation, asbestos lagging on boilers, spray-on asbestos fire insulation, asphalt or vinyl asbestos flooring or exposed asphalt-asbestos flooring mastic adhesive, and for cement asbestos or transite pipe products are listed here.

Encapsulants, sealants, coatings used on Asbestos Containing Materials

Here we list & describe products used to control or prevent the release of fibers, dust or particles from asbestos containing materials (ACM) such as asbestos pipe or boiler insulation, asbestos-cement products such as transite ducts, pipes, chimneys, and asbestos-containing flooring such as asphalt-asbestos or vinyl asbestos floor tiles or sheet flooring.

The list includes a range of ACM coatings and treatments such as sprays for sprayed-on asbestos fire insulation and sprays or coatings to lock down any remaining dust or fibers on and in a building following an asbestos removal or remediation project.

Some of these sealants and coatings are useful for dust and particle control beyond asbestos, such as in mold remediation projects or other general building clean-up projects following a fire or flood.

[Click to enlarge any image]

Watch out: Unsafe transite pipe heating flue vents like the one shown here may only be noticed by a careful building inspection such as shown in these rooftop photographs of a transite flue vent pipe which deteriorated, became swollen, and risk becoming blocked.

Photograph of a transite or asbestos cement plumbing vent provided courtesy of Roger Hankey, a Minneapolis home inspector and ASHI member. Transite pipe, which contains significant percentage of asbestos fibers, was often used for heating ducts and on occasion heating and cooling ducts in older buildings.

Watch out: for any sealant or coating to be effective in both preventing future particle or asbestos release into building air AND where necessary, to bond with new layers of material such as adhesives for flooring or ceiling tiles or even a finish coat of paint, the surface to be sealed must be clean of loose debris and dry. If you are planning to paint a floor covered with asbestos floor tiles using an epoxy paint, as described

at ASBESTOS FLOORING LEFT IN PLACE,

you'll also need to strip any waxes from the floor surface.

See STRIPPING a FLOOR BEFORE SEALING

Sealant Paints & Coatings for Asbestos Containing Materials: Sources, Instructions

• ASBESTOS FLOORING LEFT IN PLACE - using an expoxy floor paint over asbestos-containing floor tiles or sheet flooring.
• FLOOR TILE BASE LEVELING - describes using leveling compounds or filler-tiles before flooring-over asbestos tile floors
• FLOORING ADHESIVE MASTIC SEALANTS - if you need to glue down new floor or add a leveling compound over old tile mastic
• FUNGICIDAL SEALANT USE GUIDE - Additional coatings and sealants used in mold remediation, for dust or mold or other particle control and in other indoor cleanup situations
• POURED-IN-PLACE FLOORING, RESILIENT - pour on a whole new floor surface
  
  

• Aramsco, ChemSafe, Asbestos Encapsulant, 500W Lockdown, Clear or White, Catalog No. 7539, Aramsco, Inc. 1480 Grandview Ave. Paulsboro, NJ 08066 USA, Tel: 800.767.6933, website: https://www.aramsco.com/ Email: customer.service@aramsco.com
  
  Website excerpt:
  Chemsafe lockdown is a post removal lockdown encapsulant solution provided premixed for your convenience chemsafe lockdown is an encapsulant which provides for the lockdown of microscopic asbestos fibers to the substrate via the forming of a flexible resinous barrier.
  
  This flexible barrier also serves a dual purpose by priming the substrate and allowing for the adhesion of secondary coatings. Essential for use during the mandatory sealing of microscopic asbestos fibers subsequent to asbestos removal Acceptable for use as a penetrating encapsulant as provided
• Australia: "SEALING, PAINTING, COATING AND CLEANING OF ASBESTOS CEMENT PRODUCTS" [PDF], Victoria Government, Australia, retrieved 2019/08/28 original source: http://www.asbestos.vic.gov.au/in-the-workplace/sealing-painting-coating-and-cleaning-asbestos-cement-products
• Australia: SAFE PRACTICES for HOMEOWNERS REPAIRING or REMOVING SMALL AMOUNTS of ASBESTOS MATERIALS [PDF] retrieved 2019/08/28 original source: https://asbestosawareness.com.au/wp-content/uploads/2016/11/Fact-Sheet-2-Detailed-Asbestos-Management-1.pdf
• Australia: SAFE CUTTING HANDLING REMOVAL of TRANSITE PIPE [PDF] retrieved 2019/08/28 original source: https://www.qldwater.com.au/_literature_232979/Asbestos_Cement_Pipe_Cutting_Guidelines_June_2014
• Australia: ASBESTOS GUIDE for MINOR RENOVATION [PDF] Queensland Government, Australia, retrieved 2019/08/28 original source: https://www.bundaberg.qld.gov.au/files/document19919.pdf

• Canada IHSA, ASBESTOS ADVICE [PDF] health and safety advice, retrieved 2019/08/28 original source https://www.ihsa.ca/rtf/health_safety_manual/pdfs/hazards/Asbestos.pdf
  Excerpts:
  
  If you have any concerns about material that you believe may be asbestos, have it checked before work is started. Otherwise, treat the material as if it is asbestos. Asbestos is a "designated substance" under Ontario health and safety legislation. This means that its exposure is prohibited, regulated, restricted, limited, or controlled.
  
  Owners must notify contractors of the presence of any designated substances on a project before work begins or tenders are submitted. Contractors also have a responsibility to advise subcontractors. IHSA has developed a guide for creating this notification report. Owner’s Duties: Designated Substances on Construction Projects (W130) is available to download for free from our website.
• EPA MANAGING ASBESTOS in PLACE: A BUILDING OWNER'S GUIDE TO OPERATIONS AND MAINTENANCE PROGRAMS FOR ASBESTOS-CONTAINING MATERIALS ("Green Book"), web search 08/11/2010, original source: http://www.epa.gov/asbestos/pubs/management_in_place.html
  
  How to Develop and Maintain a Building Asbestos Operations and Maintenance (O&M) Program, This information is designed to assist building owners and managers in understanding how to develop and maintain an operations and maintenance program for asbestos-containing materials in their buildings.
• EPA Guidance for Controlling Asbestos-Containing Materials in buildings, NIAST, National Institute on Abatement Sciences & Technology, [republishing EPA public documents] 1985 ed., Exposure Evaluation Division, Office of Toxic Substances, Office of Pesticides and Toxic Substances, U.S. Environmental Protection Agency, Washington,D.C. 20460

Illustration: Fiberlock ABC Asbestos Binding Compound - Clear Encapsulant, sold widely. Product description excerpted from norkan.com a Fiberlock product distributor.

ABC Asbestos Binding Compound, our flagship product, is the world's most successful encapsulation solution. This highly effective, industry-standard, high-solids encapsulant meets Environmental Protection Agency guidelines. It's ideal for sealing in asbestos-containing material, as laboratory tests have shown. The EPA recommends you apply two coats for maximum effectiveness.

... The high solids, nonflammable composition of A-B-C allows for dilution with water to provide maximum flexibility for specific asbestos abatement needs, including removal/lockdown, penetrating encapsulation and bridging encapsulation. Since 1978, A-B-C has provided exceptional long lasting performance in asbestos abatement worldwide.

• Fiberlock A-B-C Asbestos Binding Compound (sold in 5 gallon pails)
• Fiberlock A-B-C Fiberspray encapsulant (sold in CFC-free spray cans)
• Fiberlock ABC Bridging Encapsulant, intended for coating spray-on fireproofing insulation in buildings - sold in pigmented and clear (6422) versions
• Fiberset PM, pre-mixed "lockdown" sealant used to seal surfaces after removing asbestos-containing materials
• Fiberlock Grip-Tack, high-solids water-based lockdown/adhesive used to coat surfaces before, during and after removal of asbestos-containing materials
• Fiberlock Penwet, colorless surfactant penetrantes and seals asbestos-containing material (ACM) to aid in removal with reduced particle release
• Fiberlock Lag Kloth, water-activated repair cloth to repair or cover existing asbestos-insulated pipes, boilers, etc.
• Fiberlock Lag Kote (Exterior) white acrylic encapsulant/sealant paint formulated for use on asbestos-containing materials (ACM) and rated for exterior use, may be particularly suited for use on transite pipes; includes UV inhibitors.
• Fiberlock Lag-Kote II, thicker than the Lag Kote Exterior product cited above) flexible coating that can be applied over metal, wood, masonry, other sound surfaces, to seal against release of asbestos particles. This coating is particularly suited for friable asbestos materials to use as an encapsulant
• Fiberlock Lag Kwik water-activated repair cloth used to repair areas of damage on asbestos-insulated pipes, boilers, etc. To be top coated with other Fiberlock sealant
• Lag Kloth is a fabric impregnated with adhesive used to wrap asbestos insulated pipes in buildings, sold as a roll, blanket, or tape
• Fiberlock PM UL-classified "Lockdown" clear encapsulant 7475 spray coating sealant used after asbestos removal
• Fiberlock SERPIFLEX ASBESTOS ENCAPSULANT [PDF]
  
  Website except: SerpiFlex Asbestos Encapsulant is a concentrated water-based vinyl acrylic product with various flameretardant chemicals and fillers. It is nontoxic, non-combustible and does not contain any solvents or silicates. Available in clear, white and colors.
• Fiberlock TBC Transite Barrier Compound "a white, elastomeric thermoplastic water based copolymer, blended specifically to seal exterior asbestos containing Industrial Fiber Cement Board (Transite®).
  
  TBC is a high solids blend of resins that forms a hard yet flexible finish which is ultraviolet resistant and mildew resistant. " [Sic. Actually there is no mildew in buildings; mildew only grows on living plants; if it's on a building surface it's mold but it's not mildew - Ed.]
• Fiberlock Wet-Wrap 'N' Seal is a warp used to seal asbestos-insulation on building surfaces and pipes

• First Place Supply, 47 N. Treaty Hwy Pocatello, ID 83202 USA Tel 866-523-7168 Web: https://www.firstplacesupply.com
• Hong Kong EPD ACM IDENTIFICATION & ABATEMENT LIBRARY [PDF] retrieved 2019/08/28 original source: https://www.epd.gov.hk/epd/sites/default/files/epd/english/environmentinhk/air/asbestos/files/ACMLibrary_Book1.pdf

• Mapei Aquaflex System, [illustrated above] MAPEI Americas Headquarters 1144 E. Newport Center Drive Deerfield Beach, Florida 33442 USA, Technical Service: 1-800-992-6273 (U.S. and Puerto Rico) or 1-800-361-9309 (Canada). For help with locating a distributor of MAPEI products, call Customer Service at 1-800-426-2734 (1-800-42-MAPEI).
  
  Described at https://www.mapei.com/it/en/products-and-solutions/products/detail/aquaflex-system
  
  Thanks to InspectApedia reader Mr.Precision for this suggestions - 2024/02/11
  
  Product Description Excerpts:
  
  Permanent encapsulation of asbestos cement.
  
  Use Aquaflex System cycle for the permanent encapsulation of type A (external view), B (internal view) and C (no view, before confinement) in compliance with the August 20, 1999 Italian Ministerial Decree, of asbestos cement structures exposed to atmospheric agents, therefore subject to progressive degradation, with emerging and release of asbestos fibre.
  
  The system is made up of two products of certified quality by authorised laboratories:
  
  - Malech: micronized acrylic resin-based primer in water dispersion that, thanks to its high wetting capacity, penetrates into deteriorated material and binds the fibres to each other and to the cementitious matrix to prevent them from being released into the atmosphere. It also creates a surface for the next layer in the encapsulation system to anchor to.
  
  - Aquaflex: it is a one-component elastomeric resin, in water dispersion based encapsulating coating. As prescribed by August 20, 1999 Ministerial Decree, the product must be applied in two contrasting coloured coats, because over time the appearance of the colour of the first coat indicates the need to carry out a new encapsulation cycle. 
• MAPEI PRIMER T [PDF]
  
  Website Excerpts: Use Primer T when applying a self-leveling underlayment on properly prepared suitable substrates.
• Metro Supply Co., Tel: 973-478-1970 (NY) or 718-383-0117 (NJ) in the U.S., Website: http://metrosupplycollc.com Email: sales@metrosupplycompany.com
  (This is a US company but their webstie gives no mailing or street address - Ed.)
• Norkran Asbestos Encapsulation Products, 25200 Easy St., Warren MI 48089 USA, Website: https://www.norkan.com/asbestos-encapsulation.php Tel: 800-227-8479 Email: sales@norkan.com
  Includes also residential paint and epoxy floor coatings

Above: PerfectPrimer® from Specialty Solutions Co. The company says that you can paint this primer over asphalt tile mastic and that it will then accept new flooring overlay.

• Specialty Solutions Co., Perfect Primer® floor prep primer/sealer. Specialty Solutions Manufacturing, Inc 119 South 3d St New Hyde Park, NY 11040 Tel: 718 736 8477 Fax: 516 750-9781 web: PerfectPrimer.com E mail: info@perfectprimer.com Website: https://www.perfectprimer.com/product/perfect-primer-retail/
  
  Website excerpt: PerfectPrimer® is a complete floor prep system and universal primer/sealer. It forms a powerful molecular bond between nearly every coating or modified cement, with any clean, sound substrate including: wood, cut-back glue, sealed concrete, metal, roofing materials, ceramic tile, VCT, epoxies, masonry, and linoleum.
• UK: Rawlins Paints, "Asbestos Roof Paint", Rawlins Paints Northspeed House LS11 9NF Leeds United Kingdom Tel: 0113 2455450 Email: sales@rawlinspaints.com
  
  includes coatings for asbestos cement roofing and corrugated cement asbestos sheets or panels,
  Website excerpt:
  
  Corrugated asbestos roofing, asbestos cement and asbestos sheeting require specialist coatings to seal, repair and protect large surface areas. Rawlins Paints offer a wide selection of solvent and water-based rubber sealants and protective coatings for industrial properties, factories and commercial buildings.
  
  To help you get the right asbestos paint or sealant coating for the job, please refer to product data-sheets, or contact our technical support team, who'll be happy to assess your situation and provide recommendations for single or compatible combination products for roofing.
  
  Asbestos roofing should not be left un-coated or unprotected, and in sealing the fibrous cement sheeting, these asbestos compatible paints and coatings will prevent water damage, or water seeping through to the underlying substrates and building architecture.
  
  Areas around asbestos sheets, such a roof tiles, flashings, box gutters, service ducts, outlet pipes, and areas which require a flexible coating, can also be protected and repaired using specialist paints and associated waterproofing products.

 

Readers and product suppliers are welcome CONTACT US by email to suggest additional products to this list and to provide technical literature on product use and effectiveness.

In order to absolutely assure our readers that we write and report without bias we do not sell any products nor services, nor do we have any business or financial relationships that could create such conflicts of interest.

InspectAPedia is an independent publisher of building, environmental, and forensic inspection, diagnosis, and repair information for the public - we have no business nor financial connection with any manufacturer or service provider discussed at our website.

 

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Reader Q&A - also see RECOMMENDED ARTICLES & FAQs

On 2023-02-04 by InspectApedia Publisher

@Paul,

Using the on-page InspectApedia search box found above and at the top of each of our pages, a quick search for

"asbestos encapsulant paint" or "asbestos sealant" finds our best advice in answering your question - better than an off-the-cuff reply here:

please see

ASBESTOS ENCAPSULANTS & SEALERS (this is the page you are now on)

and let me know if, after reading that, there's more that we should add or clarify.

Eventually we will also move your question and our reply to that same article so that it may help other readers on this topic.

[This reader comment and our reply were originally posted on a different unrelated page.]

On 2023-02-04 by Paul

Hello. What product is recommended to seal a black mastic that was under the old vinyl tile. See picture attached. Also, do I need to seal entire surface of the room or just the black mastic?

...

On 2019-08-28 by Daniel

Hello, is there any danger if there is an asbestos pipe outdoors, around 2 metres away from the window or in the terrace of an apartment?

I show you some pictures. There are 2 long pipes, from the neighbouring building, and they show some wear. This is in the last floor of a 3 stories building, and it is outdoors. Would it be enough to just never open that window and never use the terrace? Or can they be used safely?

I might rent this appartment. Should I better not rent it? I am worried that some asbestos might come in through the window.

This Q&A were posted at and are discussed in more detail

at TRANSITE CHIMNEYS

On 2019-08-28 by (mod) - paint or seal transite cement asbestos pipe in poor condition and in traffic areas

Daniel

With the reclama that nobody can make a risk assessment for environmental exposure to hazardous materials simply from a brief e-text and some photos, I see what looks like transite - asbestos-cement pipe in some of your images and in some spots the material is deteriorating, flaking, or delaminating.

It's not likely that, left un-disturbed, there would be much airborne asbestos from a cement-asbestos product unless it's being demolished, chopped, sawn, ground, etc. but there can be ground-level hazards from accumulated cement-asbestos dust

See ASBESTOS ROOFING / SIDING POWER WASHING for an example of that concern.

It might make sense to at the very least seal the exterior of the transite pipe flue (or whatever it's being used-for) where it's located in a traffic area such as at a deck.

Reader follow-up:

The Fiberlock product that was suggested to me is Fiberlock ABC Asbestos Binding Compound. I'm not sure how it compares to PerfectPrimer. I've seen a video of the latter product and it shows a workman painting right over black mastic. That's what remains on my concrete floor where the loose tiles were removed.

I'm very aware of your warning that for effective bonding to take place the floor needs to free from dust, debris, and a variety of other things. I'm trying to figure out how to clean my floor without exposing myself to asbestos fibers.

I'm looking at using a P100 mask. That will mean shaving my beard for maximum effectiveness. I thought of buying a HEPA vac but I've read that the debris should be wetted down and removed without using a vacuum. There is also the issue of what to use to fill the spaces left by the missing tiles. If new tiles are used there might be a bonding issue with the primer/sealer.

Reply:

You may have already applied a Fiberlock™ sealant but on thinking about this further it occurs to me that if you intend to install new vinyl floor tiles there is probably no need to first apply a sealant at all.

You'd simply use an adhesive mastic that's compatible with the remaining black asphaltic mastic already in place and glue tiles right over it.

While there's often asbestos in the mastic adhesive, it's not friable. One would simply clean the surface of all loose debris, perhaps damp wiping, and when dry, adhere the new floor over the old mastic.

That would avoid the worry of needing a very good double bond of Fiberlock to old mastic and new floor tile adhesive to the Fiberlock.

Do keep me updated on how this project goes.

...

Continue reading  at ASBESTOS FLOORING LEFT IN PLACE, or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX.

Or see these

Recommended Articles

• ASBESTOS CEMENT PRODUCTS - home
• ASBESTOS FLOORING HAZARD REDUCTION - home
• ASBESTOS FLOORING LEFT IN PLACE - coatings used atop vinyl-asphalt or asphalt-asbestos floor tiles left in place
• ASBESTOS FLOORING REMOVAL GUIDE
• ASBESTOS IDENTIFICATION IN BUILDINGS - home for help in recognizing asbestos-containing materials.
• ASBESTOS REMOVAL, WETTING GUIDELINES
• ASBESTOS RISK ASSESSMENT
• DOES THIS MATERIAL CONTAIN ASBESTOS? - 5 easy questions to tell if a BUILDING MATERIAL probably contains asbestos -
• FLOOR TILE BASE LEVELING
• FLOORING ADHESIVE MASTIC SEALANTS
• FUNGICIDAL SEALANT USE GUIDE
• MOLD SANITIZER, SPRAY, BIOCIDE USE GUIDE
• POURED-IN-PLACE FLOORING, RESILIENT - pour on a whole new floor surface
• TRANSITE ASBESTOS CHIMNEYS, DUCTS, PIPES

Suggested citation for this web page

ASBESTOS ENCAPSULANTS & SEALERS at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice.

Or see this

INDEX to RELATED ARTICLES: ARTICLE INDEX to CHIMNEYS & FLUES

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