Industrial Epoxy Flooring and Floor Hardeners: Choose by How the Floor Is Used
Industrial epoxy flooring is chosen by what the floor has to resist. For dry stores Armstrong makes ARMSTRONG LBF 350 and FL/SL 1000. For forklifts, HBF 400, with a ROOFCRETE EP screed where the slab needs one. For acids, ARC 450. For food, pharma and occupied buildings, FL SLW, LBF 350 or FL/SL 1000. For static control, FL/SL C/D. New concrete is hardened as it is cast with RAPIDSTRONG FM 90, NH 89, CFH 92 or LFH ADMIX 91. Every floor starts with a dry, sound, mechanically prepared slab.
By Armstrong Chemicals Pvt. Ltd. · ISO 9001:2015 certified · Protecting buildings, roofs and structures since 1982
Industrial epoxy flooring: start with how the floor is used
People search for industrial epoxy flooring, epoxy flooring for a warehouse, a floor hardener, ESD flooring or acid resistant flooring. These are five different floors. The right one depends on what runs on the floor, what spills on it, how it is cleaned and what the concrete under it is like. Thickness and colour come after that. Six checks tell you which floor you need.
Is the concrete new or old?
If the slab is still to be cast, a floor hardener can be worked into it on the day. If it is already cast, the choice is between coatings, toppings and overlays.
What runs on it?
Foot traffic and trolleys, pallet trucks, forklifts or steel wheels. Heavier wheels and impact need a thicker floor or a hardened concrete surface.
What spills on it?
Water, oils, detergents, acids or alkalis. Note the chemical, its strength and its temperature. Acid areas need an acid resistant system.
How is it cleaned?
Dry sweeping, wet mopping, pressure washing or hot water and steam. Hot washdown and steam-cleaned zones are assessed case by case.
Is the slab dry?
Ground floor slabs without a damp-proof membrane can carry moisture upwards. Moisture under a resin floor causes blisters and peeling. Test before you choose.
Are there special needs?
Static control for electronics and server rooms, a hygienic surface for food and pharma, low odour in an occupied building, or line marking for traffic aisles.
Find the right epoxy flooring or floor hardener
Match the floor to one route. Each route names the Armstrong products that suit it and takes you to the next step. Where more than one product fits, pick the one that fits the site. An Armstrong expert helps you choose.
New concrete floor, still to be cast
Dry warehouse, store, showroom or workshop
Forklifts, pallet trucks and impact
Acids and chemicals
Food, pharma, hospitals and occupied buildings
Static-sensitive areas
Old floor peeling, dusting, cracked or potholed
Uneven or damp slab
Let the finder suggest a floor
Choose the floor by what it has to do, then prepare the slab properly. Most resin floor failures start under the coating, in the concrete, and have little to do with the product on top.
Epoxy flooring and floor hardener finder
Armstrong makes dry shake and liquid floor hardeners, epoxy floor coatings, self-levelling epoxy toppings, acid resistant and ESD floors, and the screeds, primers and sealants that go with them. They differ by fit. Answer three questions for a starting recommendation, then confirm it with an Armstrong expert.
What is the floor today?
What does the floor face?
What matters most?
Epoxy floor preparation: test the slab for moisture and prepare the surface
An epoxy floor is only as good as its bond to the concrete. The bond depends on three things: a slab that is dry enough, a surface that is clean and mechanically roughened, and repairs that are finished before the primer goes on. Every Armstrong epoxy flooring product is applied to concrete prepared by grinding or shot blasting.
- 1Survey the floorRecord the traffic, the chemicals, the cleaning method and the temperature. Mark cracks, joints, hollow patches, oil stains and low spots. Tap the surface and mark anything that sounds hollow.Why: Traffic, chemicals, cleaning and temperature decide which system suits, and recorded cracks and joints are not missed later.
- 2Let new concrete cure and dryNew concrete is normally left to cure for about 28 days before a resin floor is laid.Why: New concrete still holds water and shrinks. A resin floor over it blisters or cracks.
- 3Test for moistureTape a clear plastic sheet to the slab and leave it for a day. Dampness or darkening under the sheet means moisture is coming up. Site engineers also use in-slab humidity probes or a calcium chloride test.Why: Moisture rising through a slab pushes an epoxy floor off. A taped sheet shows whether it is a problem before the floor is laid.
- 4Remove everything looseAll loose, old and flaking material comes off: laitance, old paint, failed coating, curing compound, oil and grease. Oil and grease are removed by detergent scrubbing before any grinding.Why: Epoxy bonds to the concrete under the laitance, not to the laitance. Anything loose takes the floor with it.
- 5Roughen the surface mechanicallyGrind or shot blast to the profile the product needs. Armstrong states CSP 2 to 3 for ARMSTRONG LBF 350 and ARMSTRONG FL SLW, CSP 3 to 4 for ARMSTRONG FL/SL C/D and CSP 4 to 5 by shot blasting for ARMSTRONG HBF 400. ARMSTRONG FL/SL 1000 goes on a ground or shot blasted floor.Why: Grinding or blasting gives the surface the profile the epoxy needs to grip.
- 6Repair cracks and holesRake out and fill cracks, broken joint edges and potholes before priming. ROOFCRETE EP is the Armstrong epoxy mortar for deep, heavily loaded repairs. For structural cracks see injection grouting and the concrete crack repair guide.Why: Cracks and holes show through a thin coating and let moisture in, so they are filled first.
- 7Level the floor if it needs itLow spots and out-of-level slabs are corrected before the topping. ALSTRONG FSL 55 is poured 6 to 12 mm thick in one pass on a primed floor. ROOFCRETE EP is trowelled as an epoxy screed where high strength is needed.Why: A self-levelling screed corrects low spots, because a thin topping cannot hide an uneven slab.
- 8Vacuum and checkVacuum the dust. The surface should be clean, dry, sound and evenly rough before the primer is mixed.Why: Dust left on the slab goes under the primer as a release layer.
Uneven concrete floor: levelling before epoxy
A self-levelling epoxy follows the slab. It will not hide a floor that is badly out of level. Two Armstrong products are used under a resin floor.
With ALSTRONG FSL 55, never add extra water to loosen the mix, and pass a spiked roller over the wet surface straight away to release trapped air. Blend it with a drill mixer at 400 to 500 rpm.
Epoxy floor peeling, blistering or dusting: repair before you recoat
A resin floor that has failed tells you why, if you look before you scrape. Read the failure, fix the cause, then repair the smallest area that reaches sound material. Removing the whole floor is the extreme case.
How to repair a damaged factory floor, step by step
- 1Mark out the failed areasTap the floor and mark everything hollow or loose. Mark a margin beyond the visible damage.Why: Marking beyond the visible damage makes sure the repair edge falls on sound floor.
- 2Remove all loose, old and flaking materialScrape, grind or shot blast until only well-bonded coating and sound concrete remain. Feather the edges of coating that stays.Why: New coating bonds only to sound concrete and well-bonded old coating.
- 3Fix the causeMoisture, missing joints, chemical attack or thin film. A recoat over an unsolved cause fails the same way.Why: A recoat over an unsolved cause fails the same way, and wastes the work.
- 4Rebuild the concreteCut the edges of potholes square, prime with ROOFBOND EP and place ROOFCRETE EP while the primer is still tacky, within 30 to 50 minutes. For shallow, wide areas ALSTRONG FSL 55 is poured 6 to 12 mm thick. Where a new cementitious overlay is bonded to old concrete, ALSTRONG CB 253 is brushed on as the bond coat and the overlay is placed while it is tacky.Why: Square edges and a primed, tacky surface let the repair mortar lock into the hole.
- 5Seal the jointsRe-form every slab joint through the repair and seal it. See the joints step in the next section.Why: Slab joints move. A joint left through the repair cracks the new floor along the line.
- 6Prime and recoatPrime the prepared area and apply the chosen topping. Recoating one bay at a time keeps the plant running.Why: The primer bonds the new topping, and one bay at a time keeps the plant running.
Epoxy screed floor for a drain or tank area
An epoxy screed floor is a heavy-duty, chemical- and abrasion-resistant surface for drains, tank bases and industrial floors. It is a system, and each layer depends on the one before it: primer for the bond, screed for the body, topcoat for the finish. Doses, thicknesses and coats are the standard figures; the site and the exposure decide where they move.
- 1Inspect and cleanCheck the slab for cracks, damage and unevenness. Clean with a wire brush, electric grinder or scarifier to remove dirt and loose particles and give the primer something to grip.Why: Epoxy bonds very strongly to sound concrete and not at all to dust, oil or laitance.
- 2Fill cracks and patchesFill cracks and joints with epoxy putty after cleaning.Why: A crack left open shows through the finished floor and lets the water in under it.
- 3PrimeApply RAPIDSTRONG EPOXY PRIMER 810 by brush or roller. It is the epoxy-resin primer for improving the bond of epoxy toppings and mortars to concrete.Why: The primer soaks into the pores and locks the screed to the slab.
- 4Epoxy screedLay ROOFCRETE EP or ROOFCRETE EP 405, the heavy-duty chemical- and abrasion-resistant epoxy screed, 2 to 3 mm thick over the primed surface.Why: The screed gives the floor its body and resistance to chemicals and wear.
- 5TopcoatFinish with two coats of RAPIDSTRONG EHB 800, about 1 to 2 mm in all, for about 3 mm in total; a heavier floor of 5 to 6 mm is quoted for tougher service.Why: The topcoat seals the screed and gives the floor its easy-clean, sealed face.
How epoxy flooring is laid: primer, screed, topcoat, joints and cure
Every Armstrong epoxy floor follows the same order. The slab is prepared, primed, levelled or screeded where needed, and finished with the coating or topping that suits the use. Joints are carried through and sealed, and the floor is left to cure before traffic.
- 1Prepare the slabMoisture tested, repaired, and ground or shot blasted to the profile the product needs. Nothing loose is left.Why: Every layer of an epoxy floor depends on the slab, so a poor preparation fails whatever goes on top.
- 2PrimeAn epoxy primer coat goes on the prepared concrete. It seals the pores and bonds the floor to the slab. ARMSTRONG FL SLW uses a water-based epoxy primer, ARMSTRONG ARC 450 an acid resistant primer and ARMSTRONG FL/SL C/D a conductive primer. RAPIDSTRONG EPOXY PRIMER 810 is applied by brush or roller.Why: The primer seals the pores and bonds the floor to the slab, and stops air bubbling up through the topping.
- 3Screed where neededUnder heavy loads, or where the slab is rough or out of level, an epoxy screed of ROOFCRETE EP is trowelled onto ROOFBOND EP while the primer is still tacky. ROOFBOND EP is mixed base to hardener at 65:35 by volume and has a pot life of 90 to 120 minutes. For the screed, base and hardener are mixed for 3 minutes, then the silica filler is added. Use it within the 90 to 120 minute pot life.Why: Heavy loads and rough slabs need the body of a screed. A thin coat cannot carry them.
- 4Apply the topcoat or toppingMix Part A and Part B in the stated ratio with a slow-speed mixer. Coatings are applied by roller or squeegee in a uniform film. Self-levelling toppings are poured and spread with a notched squeegee, then rolled with a spiked roller to release air.Why: Mixing in the stated ratio gives the stated hardness, and applying it evenly gives a uniform thickness.
- 5Add grip where it is wantedFor a slip resistant finish, anti-slip aggregate is broadcast onto the final wet coat of ARMSTRONG LBF 350 or into the wet coat of ARMSTRONG HBF 400.Why: Epoxy is glossy and slippery when wet, so aggregate is broadcast on the last coat where grip is needed.
- 6Form the coveAt walls, plinths and drains the floor is turned up in a rounded cove so dirt and water have no corner to sit in.Why: A rounded cove leaves no corner for dirt and water to settle, and keeps the floor sealed up the wall.
- 7Carry joints through and seal themEvery moving joint in the slab is cut through the resin floor and sealed. ROOFEX-SEAL PS in pour grade suits floor joints 6 to 25 mm wide. Its data gives a width to depth ratio of 2:1 on butt joints and 1:1 on floor joints. It is used with ROOFEXSEAL PRIMER PS / NPS on the joint faces. ROOFEXSEAL PU 212 is a primerless polyurethane sealant for floor joints with ±25% movement.Why: A joint that moves under a rigid floor cracks it, so joints are cut through and sealed with a flexible sealant.
- 8Mark the floorTraffic aisles, walkways and bays are marked with RAINSEAL RMP on a clean, dry surface.Why: Traffic lines on a clean, dry floor last, and on a dirty floor peel off.
- 9Cure before trafficKeep the floor closed until it has cured. The times are in the table below.Why: An epoxy floor walked on early is marked and loses its bond.
Epoxy flooring for warehouses and forklift traffic
For dry storage and light to medium duty, ARMSTRONG LBF 350 builds 200 to 400 microns in coats. For a smooth, glossy poured floor, ARMSTRONG FL/SL 1000 is laid at 2 to 3 mm. For forklift routes, impact and heavy manufacturing, ARMSTRONG HBF 400 builds 400 to 2,000 microns and can take broadcast aggregate for extra thickness and grip. All three suit this work. The traffic and the finish you want decide between them.
Acid resistant flooring for battery rooms, labs and chemical areas
ARMSTRONG ARC 450 is a two-component acid resistant epoxy for floors and walls. Armstrong lists it as resistant to hydrochloric, sulphuric and nitric acid, and to the alkalis sodium hydroxide and potassium hydroxide. It is applied in 2 to 3 coats of 200 to 300 microns each, with the next coat after 12 to 16 hours. Full chemical resistance comes after 7 days. The coating is taken up the walls and plinths so a spill has nowhere to get behind it. Joints in chemical areas are sealed with ROOFEX-SEAL PS, which resists fuels, oils and dilute acids. Tell Armstrong the chemical, its concentration and its temperature before the system is fixed.
Hygienic epoxy flooring for food, pharma and hospitals
These floors need a continuous, easily cleaned surface, a cove at every wall and falls to the drains. ARMSTRONG FL SLW is a water based, low VOC self-smoothing topping laid at 1.5 to 3 mm, suited to occupied buildings where odour matters. ARMSTRONG LBF 350 is solvent free and listed for food processing and commercial kitchens. ARMSTRONG FL/SL 1000 is listed for pharmaceutical plants and clean rooms. CONPROOF EP is a food-neutral, water-dilutable epoxy coating that can be applied to damp concrete, in two coats 6 hours apart, for wet process rooms, walls and tanks. Part 1, Part 2 and clean water are mixed at 1:1:1, with a pot life of 60 minutes at 20°C. It is stated to resist fatty acids, wash chemicals and detergents, and it can be blended with cement as an epoxy patching putty. It takes light foot traffic after 16 hours and reaches full chemical cure in 7 days.
ESD flooring for electronics, server rooms and operating theatres
ARMSTRONG FL/SL C/D is a two-component epoxy topping made in static conductive and static dissipative grades. The concrete is prepared to CSP 3 to 4. A conductive primer goes down, a copper tape earthing grid is laid on it and connected to earth, and the topping is applied by squeegee and roller. Resistance is measured on site after application: below 1 megohm for the conductive grade, and 1 megohm to 1 gigohm for the dissipative grade. Thickness is set for each project. Allow 7 days full cure before heavy traffic.
Epoxy floor curing time: when can traffic return?
Floor hardener for new concrete floors, loading bays and ramps
If the slab is still to be cast, the hardest-wearing floor is often the concrete itself. A floor hardener makes the top of the slab dense and abrasion resistant. It becomes part of the concrete, so there is no film to peel. This is the usual answer to concrete floor dusting, loading bay floor damage and forklift wear on new floors.
How to apply dry shake floor hardener
- 1Pour and level the slabPlace, compact and level the concrete as usual. ALSTRONG CA 353 is the Armstrong high early strength plasticizer for industrial floor, road and pavement concrete, made to shorten the curing period. With RAPIDSTRONG LFH ADMIX 91, the hardener is already in the mix, so the slab is simply poured, levelled and power floated.Why: The hardener is only as good as the slab it goes into, so the slab is placed and levelled properly first.
- 2Wait for the bleed water to goThe dry shake goes on when the surface water has disappeared and the concrete has reached initial set but can still be worked.Why: Hardener broadcast on bleed water sits in the water and bonds poorly, while on a hard surface it cannot bond at all.
- 3Broadcast the hardener evenlySpread the powder at the chosen rate. Moisture from the concrete dampens it. Do not sprinkle water on it.Why: An even spread gives an even wear surface. Wet or lumpy spots show as patches.
- 4Float and trowel it inWork the hardener into the surface with a power float, then trowel in several passes to a dense, smooth finish.Why: Floating works the hardener into the surface, and troweling in passes makes it dense and smooth.
- 5Cure at onceApply a curing compound immediately after trowelling to stop rapid moisture loss and shrinkage cracks. ROOFEXCURE WB is the Armstrong water based curing compound, sprayed at 4 to 5 sq.m per kg with the nozzle held about 450 mm from the surface.Why: A fresh slab that dries too fast cracks and dusts. The curing compound keeps the moisture in.
- 6Cut and seal the jointsSaw the contraction joints and seal them with ROOFEX-SEAL PS or ROOFEXSEAL PU 212. The joint layout comes from the slab designer.Why: A slab shrinks. Sawn joints put the cracks where they are wanted, and the seal keeps dirt out of them.
- 7Keep heavy traffic offAllow 7 days of full cure before heavy traffic.Why: The hardened surface only reaches its strength after a week, and heavy loads before that damage it.
Types of industrial flooring compared: epoxy coating, self-levelling epoxy and floor hardener
Every product below is made by Armstrong and each suits the work listed against it. They differ by fit: thickness, chemistry and the duty they are built for. Where two or three suit your floor, pick the one that fits the site. An Armstrong expert helps you choose.
Where epoxy flooring is the wrong choice
- A new slab that only needs to resist wear. A floor hardener in the concrete does this without a coating to maintain.
- Hot washdown and steam. These zones are assessed case by case before any epoxy is offered.
- A slab with moisture coming up. The moisture is dealt with first, or the floor blisters.
- Outdoor floors in full sun. Epoxy tends to chalk and yellow in sunlight.
- Machine bases and anchor bolts. These need grout, not flooring. See machine base grouting and anchoring.
- A slab that is cracked and moving. A hard epoxy cracks where the slab cracks. The slab is repaired first.
Epoxy flooring chemicals and floor hardeners by stage
How much epoxy flooring material for 1,000 sq.ft
Approximate quantities for 1,000 sq.ft (about 93 sq.m), worked out from Armstrong stated figures on a smooth, prepared surface. Armstrong does not publish a coverage figure per kg for the epoxy floor toppings in the documents used here, so those rows show the volume of the finished film at the stated thickness. Use the calculator for your own floor, and ask Armstrong for pack quantities.
The litres of film are a volume, not a pack quantity.
Standards and tests for epoxy flooring and floor hardeners
- IS 4631 is the Indian code of practice for laying epoxy resin floor toppings, and IS 9197 is the specification for epoxy resin, hardeners and epoxy resin compositions for floor topping. They are given here for reference. The Armstrong data on file quotes neither.
- IS 1237 is the standard Armstrong quotes for RAPIDSTRONG NH 89.
- BS 8204: ALSTRONG FSL 55 is stated in impact class A.
- ASTM C 881 and EN 13813 are the standards quoted for CONPROOF EP.
- Surface profile: Armstrong states the concrete surface profile (CSP) for each floor, from CSP 2 to 3 for thin coatings to CSP 4 to 5 for high build.
- Moisture tests: the plastic sheet test, in-slab humidity probes and the calcium chloride test are the common site checks before resin flooring.
- ESD verification: resistance is measured on the finished ARMSTRONG FL/SL C/D floor against the conductive or dissipative range.
- Armstrong Chemicals is an ISO 9001:2015 certified manufacturer. Test values come from Armstrong laboratory tests under controlled conditions, and site results vary with the surface and the workmanship.
Epoxy flooring and floor hardener material calculator
Enter the floor size and choose the floor to see the material needed. Quantities only. Where Armstrong has not published a coverage figure, the calculator says so and Armstrong confirms the quantity.
Choose your units
Enter the measurements
Which floor?
Traffic (for RAPIDSTRONG NH 89)
Screed or levelling under a resin floor?
8 mistakes that make epoxy flooring peel, blister or wear out
- Choosing by thickness alone. The use decides the floor: traffic, chemicals, cleaning and static. Thickness follows from that.
- Skipping the moisture test. Moisture rising through the slab pushes the floor off from below.
- Coating over laitance, oil or old paint. Everything loose, old and flaking has to come off, and the surface has to be ground or shot blasted.
- Leaving out the primer or letting it go off. ROOFCRETE EP is placed while its primer is still tacky. A dry primer does not bond the same way.
- Coating over moving joints. The joint cracks straight through the floor. Joints are carried through and sealed.
- Opening to traffic too early. Light traffic after a day is not full cure. Chemical resistance takes 7 days.
- Using a standard epoxy in a hot-wash or acid area. These need an assessed system, such as ARMSTRONG ARC 450 for acids.
- Adding extra water or thinner to make the mix go further. It weakens the floor. Mix full packs in the stated ratio.
Epoxy flooring questions and answers
Which chemical is used for industrial epoxy flooring?
A two-component epoxy: a resin and a hardener mixed on site. Armstrong makes ARMSTRONG LBF 350 and ARMSTRONG HBF 400 as roller or squeegee coatings, ARMSTRONG FL/SL 1000 and ARMSTRONG FL SLW as poured self-levelling toppings, ARMSTRONG ARC 450 for acid areas and ARMSTRONG FL/SL C/D for static control. An epoxy primer goes under each, and ROOFCRETE EP is used as the screed and repair mortar.
Epoxy coating or self-levelling epoxy: which is better?
They do different jobs. A coating is a thinner film, 200 to 2,000 microns, applied by roller or squeegee. It follows the texture of the slab. A self-levelling epoxy is poured at 1.5 to 3 mm and gives a smooth, level, glossy surface that is easy to clean. Choose a coating for stores and workshops, and a self-levelling floor for clean rooms, showrooms and pharma.
Floor hardener or epoxy flooring: which should I use?
On a new slab that must resist wear, a floor hardener is usually the right start. It is part of the concrete and cannot peel. Use epoxy where the floor must resist chemicals, be hygienic, control static or look finished. Many plants use both: hardened concrete in the yard and loading bays, epoxy in process and packing areas.
Which is best for epoxy flooring in a warehouse?
For racking aisles and light trolley traffic, ARMSTRONG LBF 350. For forklift routes and turning areas, ARMSTRONG HBF 400 at a higher build. For a new warehouse slab, RAPIDSTRONG FM 90, RAPIDSTRONG NH 89 or RAPIDSTRONG CFH 92 harden the concrete as it is cast. All of them suit warehouses. The traffic decides.
When can forklifts return after epoxy flooring?
Armstrong states light traffic after 24 hours for ARMSTRONG FL/SL 1000 and ARMSTRONG FL SLW, and 7 days of full cure before heavy traffic and chemical exposure for ARMSTRONG HBF 400. Plan on 7 days before forklifts unless Armstrong confirms a shorter time for your system. ALSTRONG FSL 55 takes forklifts in 5 to 7 days.
Why does epoxy flooring peel off?
Almost always because of what is under it. The common causes are moisture in the slab, a surface that was not ground or shot blasted, oil or laitance left on the concrete, a primer that was skipped, and joints that were coated over. The epoxy itself is rarely the cause.
What is ESD flooring and where is it needed?
ESD flooring drains static charge safely to earth so it does not damage electronic parts or cause a spark. ARMSTRONG FL/SL C/D is laid over a conductive primer and a copper tape earthing grid. The conductive grade measures below 1 megohm and the dissipative grade 1 megohm to 1 gigohm. It is used in electronics plants, data centres, server rooms and operating theatres.
Which flooring is used for a battery room or acid storage area?
ARMSTRONG ARC 450. It is an acid resistant epoxy for floors and walls, applied in 2 to 3 coats of 200 to 300 microns. Full chemical resistance comes after 7 days. Give Armstrong the acid, its concentration and temperature so the system can be confirmed.
Can epoxy flooring be done on a damp floor?
Standard epoxy floors need a dry slab. Test for moisture first and fix the source. CONPROOF EP is stated to bond to damp concrete and ROOFCRETE EP cures on damp surfaces, so they are used in the build-up for damp areas. An Armstrong expert confirms the system after seeing the test results.
How to fix an uneven concrete floor before epoxy?
Grind the high spots and fill the low ones. ALSTRONG FSL 55 is a self-levelling cementitious topping poured 6 to 12 mm thick in one pass. Each 25 kg bag is mixed with 4.75 litres of water. For heavy-duty areas, ROOFCRETE EP is trowelled as an epoxy screed over ROOFBOND EP.
Can epoxy flooring be laid without removing the old coating?
Only over coating that is still firmly bonded. Everything loose, blistered or flaking is removed, the remaining surface is abraded and the cause of the failure is fixed first. Where most of the old floor is hollow, it is removed completely. Ask Armstrong before recoating over an old epoxy.
How much floor hardener is needed per sq.m?
RAPIDSTRONG FM 90 and RAPIDSTRONG CFH 92 are broadcast at 6 to 12 kg per sq.m over green concrete. RAPIDSTRONG NH 89 is broadcast at 3.5 kg per sq.m for normal traffic and 6 to 12 kg per sq.m for heavy traffic. RAPIDSTRONG LFH ADMIX 91 is a liquid, dosed at 500 ml to 1 litre per 50 kg bag of cement. Higher rates give better abrasion resistance.
Is epoxy flooring suitable for food plants and commercial kitchens?
Yes, with the right product and details. ARMSTRONG LBF 350, ARMSTRONG FL SLW and CONPROOF EP are listed for food and beverage areas. The floor needs coves, falls to drains and a slip resistant finish in wet zones. Areas cleaned with hot water or steam are assessed case by case.
How are joints treated in an epoxy floor?
Joints in the slab are never bridged with rigid epoxy. They are cut through the floor and filled with a flexible sealant: ROOFEX-SEAL PS for chemical, fuel and traffic joints, or ROOFEXSEAL PU 212 for general floor joints. For wide structural joints see expansion joint sealing.
How long does an epoxy floor take to lay?
It depends on the build-up. Preparation and repairs come first, then primer, screed where needed and one or more topcoats, with waiting time between coats. ARMSTRONG ARC 450, for example, needs 12 to 16 hours between coats. After the last coat, allow 24 hours before light traffic and 7 days before full service.
Get the right floor for your plant
Tell us what runs on the floor, what spills on it and how it is cleaned. An Armstrong applicator or distributor will recommend a system. Toll free 1800 103 2034. Armstrong manufactures epoxy flooring chemicals and floor hardeners in Bengaluru and supplies them all across India, with South India as its major hub.
Written by the technical team at Armstrong Chemicals Pvt. Ltd., an ISO 9001:2015 certified manufacturer of construction and waterproofing chemicals in Bengaluru, with more than 200 products. Armstrong has been protecting buildings, roofs and structures since 1982 and supplies all across India, with South India as its major hub.
The methods on this page are Armstrong's standard procedures. Doses, thicknesses and the number of coats are adjusted to the conditions on each site. Load-bearing repairs and strengthening are designed by a structural engineer.
Last updated · Questions on this method: toll free 1800 103 2034