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Non-toxic, biodegradable mastic and adhesive remover
Franmar Blue Bear 500MR Mastic Remover effectively removes difficult mastics from concrete subfloors. Unlike most adhesive removers which are full of solvents and harmful chemicals that are dangerous to inhale, 500MR is very low-odor and low VOC. It's specially formulated from 100% soybean oil and is completely biodegradable.
It's also easy to apply, remove and dispose of and requires no special equipment. It works fast in only a few hours. On really tough jobs, its low evaporation rate allows it to work for up to 24 hours. Allow 500MR Mastic Remover to do the work; it will save you labor and money.
This popular product works very fast and very well. It softens old brittle mastic that's stubborn and difficult to remove. Chipping mastic off a concrete floor is no fun, but this product makes it easy and safe. We've received nothing but good comments about this product for the past 10 years.
Features & benefits
Fast, effective — saves labor; works in 1-2 hours with water clean-up
Easy-to-use — cleans up with water
Versatile — removes mastic or adhesive from asbestos, vinyl, ceramic tile and more
Non-toxic — non-corrosive to skin; contains no hazardous ingredients
State Nexus Fee may apply A state nexus fee will be applied to this item if drop shipped to the following states: . We're sorry for the inconvenience. Click here to read more about the state nexus fee.
Coverage (1 Coat)
1-Gallon = 100-125 SF - if no trowel marks 150-175 SF - for vinyl and latex mastic or black asbestos mastic if professionally trowelled (i.e. there are clear trowel marks) 5-Gallon = 500-625 SF - if no trowel marks 5-Gallon = 750-875 SF - for vinyl and latex mastic or black asbestos mastic if professionally trowelled (i.e. there are clear trowel marks) 55-Gallon = 5,500-6,875 SF - if no trowel marks 55-Gallon = 8,250-9,625 SF - for vinyl and latex mastic or black asbestos mastic if professionally trowelled (i.e. there are clear trowel marks)
Square Feet / Box
Thickness or Height
Veneer Cut Thickness
Boxes / Pallet
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Boards / Box
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Weight / Box
Interior or Exterior
Use On Material
Asbestos, Concrete, Latex, Mastics, Vinyl
Removes vinyl or latex asbestos mastics coating from concrete floors. Cleanup: squeegee-remove softened mastic and excess 500MR. generally, black mastic will dissolve into a liquid the consistency of very old engine oil, and can be scraped into a puddle. fill the puddle with a commercial absorbent, and then shovel into receptacle. all other mastics tend-lift as more solid than liquid and can be scrapped into a pile that can be picked up with a shovel.
after picking up the dissolved/lifted mastic, there will still be a slippery, film residue remaining. in most cases, mopping the floor with franmar chemicals emerge will remove the residue. for best results for cleanup, after removing softened mastic, cover floor with a commercial absorbent, sweep up and then follow with a mop rinse using emerge. * testing surface for residues after floor has been mopped: apply water-various small spots on the substrate. if water turns cloudy white, indicates there is 500MR mastic remover on the surface. remop using a degreaser is recommended. then retest. let surface dry before applying new mastic coating.
in all cases, care should be taken not-over saturate the floor by using too much water.
in extreme cases, and/or for especially difficult floors, scrape up softened mastic, then pick up filmy residue with steam vacuum. cover floor with a commercial absorbent, sweep up and then follow a mop rinse using emerge. let dry before applying new mastic coating.
* use of rotary cleaning machines for cleanup are not recommended unless an area has been tested first. "
Muriatic Acid, Petroleum-Based Mineral Spirits and Turpentine
Environmental Protection Agency (EPA)/Design for the Environment (DFE)
Country of Manufacture
Use With These Prodcuts
Number of Colors
Critical Radiant Flux
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Pile Height (Low)
Resistance to Insect Pests
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Surface Texture, Construction, Style
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Bundles per Pallet
Bundles per Square 6" Exposure
Bundles per Square 7" Exposure
Bundles per Square 7-1/2" Exposure
Bundles per Square 8" Exposure
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Pounds per Square 6" Exposure
Pounds per Square 7" Exposure
Pounds per Square 7-1/2" Exposure
Pounds per Square 8" Exposure
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Tiles per bundle
Tiles per Lin Foot
download Material Safety Data Sheet (MSDS)
Use On Material - Condition
Asbestos, Concrete, Latex, Mastics, Vinyl
brush, mop, scraper, squeegee
Application Temperature Range
Warmer than 55°F
Pour 500MR Mastic Remover undiluted directly on the concrete surface. Do not exceed the recommended coverage. Applying too much 500MR does not increase removal time, but does contribute-impeding the complete removal of residue.
Where there are wide cracks or seals, fill with a commercial absorbent like diatomaceous clay (e.g. OilDry), saw dust, or synthetic absorbent, before pouring 500MR on the surface.
Use a long handled brush or broom-ensure 500MR covers all the mastic trowel ridges.
Allow 500MR-dwell until mastic softens (generally 45-60 minutes for asbestos mastic. Dwell time for vinyl and acrylic mastics is longer, in some cases up-4 hours.)
Surface or Product Preparation
Surface should be clean, dry, free of oil, wax and solvents
Recommended # of Coats
Appearance When Dry
Cleans Up With
squeegee, kitty litter, scraper
Store in cool dry place out of sunlight
Recycling or Disposal
Dispose of excess product in accordance with all local state and federal regulations, Do not throw out container unless completely empty. Pour contents onto dry cardboard and let thoroughly dry outdoors. May also be absorbed with cat litter sand or other dry materials
Finish Contains Aluminum Oxide?
Floor Item Type
Janka Hardness Rating
Number of Plys
Range of Resistance
Risk in Dry Climates
Shade (1 Light) - (7 Dark)
Strips / Plank
Surface Treatment Color
Touch Up Kit
Can be indoor?
Can be outdoor?
Max Gallons Per Minute
Max BTU's / Hour
- BTU's / Hour
Multi Control Capabilities
Temperature Range (with remote)
Color Rendering Index (CRI)
Questions & Answers
Green Building Supplies:
Area of room (sq ft):.
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