Painting Floors with FixMaster


We put this information together to assist in un-common circumstances, where things are beyond the norm. 90% of the time it’s easy and straight forward, however if you face something challenging, then read below, and remember advice is always available from our technical team on 01483 266636.

Two important factors to consider:

  1. Choosing the finish: Why are you painting the floor, and what kind of traffic will be using the floor.
  2. Preparation: Long term floor coating success if reliant on the preparation. Ensure you know what’s best to do. 

Choosing the finish
This is important, chances are the floor could be imperfect and likely to be taking vehicle traffic – generally in difficult areas two part epoxy coatings are best, they dry with a harder and thicker film.

We have both waterbourne and solvent free high build two part epoxy coatings, which can be used for warehouses, garages and factory’s. Water based epoxy for general use, and solvent free high build for heavier wear areas. 

Polyurethane can be used if the floor is likely to have any movement, where cracking could be a concern.

A well prepared floor is a must, the things to consider are, porosity and contamination – is the floor porous enough to accept a coating if it is too sealed, the coating wont have a key. Generally you can abrade or shot blast the surface to open it up and allow the coating to wet out and adhere, or use an adhesion promoting primer such as FixMaster Epoxy Floor Prime in certain circumstances.

If the surface is contaminated, or contains repellants such as oil, grease, silcone etc, they must be removed or they could cause the coating to lift, peel, flake or fish eye. Use a high quality emulsifying detergent, steam cleaer, or the necessary chemical for removal as required. Ensure all cleaning residue is thorougly removed. 

Epoxy WB Gloss Anti SlipFixMaster Epoxy Paint WB Gloss

Acid Etching

This method is used to both open up the pores of a hard or dense concrete surface and also clean at the same time. the Acid will react with the lime in the concrete and should bubble and fizz, you can help by working it into the surface with a broom if required, to get it going. 

Acid etch can only be used on a bare concrete substrate and will not be effective, if a curing agent was used, or the surface has been coated or sealed. 

New Concrete

must be a minimum of 28 days old, Waterbased coatings will give you a good chance on green concrete as they are often microporous and will let the substrate breathe.

FixMaster Epoxy Prime 100 also has excellent moisture tolerance, and can in some circumstances be applied to green concrete.
 If the substrate is coated too early with a solvent based or high build coating, de-lamination is a possability. 

Very Porous Surfaces
Very porous surfaces are great for good adhesion, as they have plenty of pores for the coating to soak into, however you’ll get a patchy un-even floor, FixMaster Epoxy Prime 100 is very good over porous substrates prior to coating. to help achieve a uniform finish.

Asphalt is never a solid surface and can be subject to movement early on, however as the years pass it does almost completely stop moving. 
We would always recommend using a specific asphalt coating like, FixMaster Asphlalt Paint or FixMaster Anti-Slip Asphalt Paint.

New asphalt must be at least 3 months old prior to coating, to allow oils and solvents to have dried out sufficiently. 


Sand and Cement or levelling Screeds
Sand and cement screeds can be weak, and normaly very porous, a good quality two pack epoxy primer such as FixMaster Epoxy Prime 100 should be used, before painting.
Levelling compounds are often not ideal for painting – however you’ll need to check with the manufacturer.
FixMaster Floor Leveller however can take vehicle traffic from just 3mm thick, and can be coated with a variety of FixMaster epoxy paints.

It’s impossible to have timber 100% dry, so do not completely seal every side, always leave the underside or an area un covered to allow the timber to breathe
Make sure it is clean and if very porous seal before hand.


Not withstanding some kind of chemical clash, most coatings will adhere to most substrates, but common sense must be used. 
good thoughts to have: is there a key, is it too porous and is it clean and free from repellents.

Water based coatings can be used on a substrate that is slightly damp, but solvent based, high build or polyurethane systems require the substrate to be dry.

The FixMaster Technical Sales Team are very knowledgeable about preparing surfaces and selecting the right product for your needs. Please phone us on 01483 266636.