Safecoat DynoSeal is a high-performance sealer above or below grade that stops moisture, moisture vapor and radon gas, as well as provides an additional sound barrier. It's highly resistant to flame spread and temperature change and, when cured, it also resists gasoline, oil, grease, fungi, acids and alkalines. It is dark bronze in color, almost black.
Unlike most petroleum-based sealers, DynoSeal is safe and contains no solvents or toxic chemicals. It is elastomeric which means it remains flexible for a long time and is ideal for repairing roofs, flashing, shingles and metal seams. It is also ideal for underground applications such as: foundation walls, fence posts, and raised garden beds. It will not leach into the soil. Color is very dark bronze.
Dynoseal is meant to be covered up and not exposed directly to the sun or elements. If used on a roof, it should be top-coated with Safecoat DynoFlex Roof Guard or other elastomeric coatings.
Cold Weather Alert:
This product should not freeze or it will not perform properly.
We will not ship this product over a weekend. You may opt to ship anyway, at your own risk, but this must be ordered via phone with a GBS eco-advisor. 800.405.0222
Why we like it
This product seals everything, everywhere, all the time without the noxious odors of petroleum or urethane-based sealers – and it lasts.
Features & benefits
Waterproof – permanently seals water above or below grade
Versatile – use on roofs beneath shingles or flashing or underground on foundation walls, fence posts or raised garden beds
Vapor sealer – stops water vapor and radon gas
Long-lasting and stable – highly resistant to temperature change and flame spread
Excellent adhesion – sticks to concrete, metal, wood and asphalt
Acoustical insulator – excellent sound deadener
Low-odor – odor-free once cured
Non-toxic – no solvents, formaldehyde, mildewcides or fungicides
State Nexus Fee may apply A state nexus fee will be applied to this item if drop shipped to the following states: California, Wisconsin. We're sorry for the inconvenience. Click here to read more about the state nexus fee.
Surface should be clean, dry and free of oil and wax
Recommended # of Coats
15-60 mils thick depending upon surface which may require more than one coat
dries in 1 hours, cures in 48 hours
Appearance When Dry
dark matte, slightly tacky
Cleans Up With
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)
AFM SafeCoat, DynoSeal
Low-odor, all-weather, waterproof, vapor-proof coating and sealer that remains flexible for years
Order as many floor samples as you like and we'll ship all samples to you for free! You may then return them, within six months, and receive a refund for all returned samples. Please note: We do not reimburse for return shipping costs.