Rust-Oleum 5180 Epoxy Repair Mortar

Rust-Oleum 5180 Epoxy Repair Mortar is an incredibly tough, 2 component epoxy resin mortar for repairing damaged, dished or dangerous concrete and stone floors.


  • Virtually indestructable
  • Heavy traffic friendly
  • Chemical resistant
  • Does not shrink or crack
  • Easy all-in-one packaging
  • Interior/Exterior use
  • No primer required in most instances
  • Quickly back into service
VAT excluded

£19.61 Tax incl.

Rust-Oleum 5180 Epoxy Repair Mortar is an incredibly tough, 2 component epoxy resin mortar for repairing damaged, dished or dangerous concrete or stone floors. Rust-Oleum 5180 Epoxy Repair Mortar offers unequalled hardness and epoxy bonding power making it stronger than concrete. Its fast curing, virtually indestructible and provides a permanent repair to badly cracked and worn concrete and stone floors. It will fill holes of any shape or size, gaps, nosings, cracks etc and may be feather edged.

Recommended Uses

  • Concrete floors
  • Stone floors
  • Damaged concrete
  • Damaged bay edges
  • Broken steps
  • Filling holes and gaps

Surface Preparation

Concrete and stone surfaces should be dry and free from previous coatings, contaminants and loose material and at least four weeks old. Very smooth concrete or concrete with soft laitance should be etched with Rust-Oleum Mathys 108 Surfa Etch Solution. Grease or oil should be removed with Rust-Oleum Mathys ND14 Cleaner Degreaser and the area thoroughly washed off and allowed to become completely dry.

Directions for Use

The pack contains a granular resinous material and one or more bottles (depending on the packaging size) of curing agent. Mix the granular resinous material with the curing agent on a board. It is important that mixing should be carried out very thoroughly. The ratio of resin to curing agent is critical and the mixing of part packs is not recommended.


Trowel vigorously over the prepared surface. Final levelling should be carried out with a steel float. To prevent ‘drag’ it is advisable to wipe the blade of the tool frequently with a rag moistened (but not saturated) with white spirit. The working life of the mixed product is 30-60mins depending on temperature. If the product is used past its working life, trowelling will become difficult and adhesion reduced.

Cleanup: Rust-Oleum Thinner 160


  • Product can be applied from feather-edge to 50mm depth (full strength is achieved at 5mm).
  • Build up layers of Rust-Oleum 5180 Epoxy Repair Mortar if the depth is significantly greater than 50mm or use Rust-Oleum 5190 Epoxy Repair Mortar Deep Fill.
  • Applying the product directly in a too high film thickness can reduce the performance of the cured material.

Application Conditions

Temperature of material, air and substrate between 10 and 35°C and relative humidity below 85%. The substrate temperature must be at least 3°C above dew point.
Product Details

Data sheet

Typical Coverage (per coat)
0.12m² per kg at 5mm thick
Touch Dry
3 Hours

questions James cooper on 15/02/2019

Hi, I'm looking to fix a church door. The hinge is fix into the stone, and it's wobbling. I was going to pull out hinge and clean. Fill full of epoxy and push hinge back in. Will this product be ok for this?


For vertical repairs we would instead recommend Rust-Oleum 5110 Verti-Patch.

questions Scott moore on 02/01/2019

Does this react poorly if it comes in contact with aluminium


Rust-Oleum 5180 Epoxy Repair Mortar is intended to repair damages in concrete/cementitious substrates, we are not sure where the aluminium contact would occur and we have no knowledge of any issues or reaction between the two but without knowing further details we could not confirm.

questions Rick on 10/08/2018

Hi. I have a number of screed patches on my garage floor which are around 2-3mm in depth and perhaps 20cm sq on average. Noting on the webpage that the epoxy repair mortar achieves full strength at 5mm, would the product be suitable for screed repair like this? The footfall in the garage is minimal. Thanks


For these size repairs we would instead recommend the use of Rust-Oleum 5412 Epoxy Filler.

questions David reynolds on 17/02/2018

Can the rust-oleum 5180 be used to repair cracked and broken steps including shaping around the curved face edge overhang?


Rust-Oleum 5180 Epoxy Repair Mortar provides a permanent repair to badly cracked and worn concrete and will fill holes of any shape or size, gaps, nosings, cracks etc and may be feather edged. It is primarily used for horizontal surfaces and is often used to repair steps and would be a good solution. For large amounts of vertical or overhead repairs we normally would suggest using Rust-Oleum 5110 Verti-Patch, but where possible we would recommend using Rust-Oleum 5180 Epoxy Repair Mortar on steps.

questions Tina B on 19/12/2017
Question: Can this be applied directly to bitumen which we found once we had taken the loose parts off a door threshold.

No, Rust-Oleum 5180 Epoxy Repair Mortar is not suitable to be applied to bitumen based substrates.

questions holly crawford on 12/06/2017
Question: can you paint over this once dry? Thanks

Yes with following comments; 

  1. Is mostly intended as a floor repair, so the assumption is that it will be overcoated with a specifically designed Rust-Oleum floor coating.
  2. As this is an epoxy type, it is more “usual” to be overcoated with an epoxy type paint.
questions gary on 27/07/2016
Question: please can you tell me if this product is ok to use as repair on concrete window lintel? many thanks , Gary.

We would recommend using Rust-Oleum 5110 Verti-Patch rather than the Rust-Oleum 5180 Epoxy Repair Mortar for window lintel repairs.


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