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Water-Based High Permeability Primer - Technical Guide for Floor Coatings

Water-Based High Permeability Primer (DS-F700) technical guide: role in the coating system, detailed technical properties, surface preparation, mixing ratio, cure window, coverage per m², quality control and pricing. From Delshine Coatings.

Water-Based High Permeability Primer - Technical Guide for Floor Coatings

Overview

Epoxy floor coatings are the standard answer for industrial and commercial floors that have to withstand traffic, chemicals, aggressive cleaning and heavy abrasion. They are hard, chemically resistant, easy to clean and, in the self-levelling grades, visually excellent.

The Delshine range covers the full spectrum: thin-film solvent-based coatings for light-duty areas, solvent-free high-build systems, self-levelling floor coatings, anti-slip orange-peel textures for wet and oily areas, decorative 3D art systems, and the antistatic and static-conductive grades required in electronics, pharmaceutical and chemical environments.

The floor is the substrate where preparation matters most. Concrete floors are routinely coated without ever being ground, and a floor coating will then delaminate at the first sign of traffic. Grinding, moisture testing and correct primer selection are not optional steps.

Product identification

The identifiers below are the ones printed on the drum and quoted on the purchase order. Always order and dispatch by code, because the grade and the zinc or temperature variant cannot be inferred from the trade name alone.

Product codeDS-F700
Trade nameWater-Based High Permeability Primer
CategoryFloor coatings
System rolePrimer - first coat on the prepared substrate

Where this product is used

  • Industrial warehouse and factory floors
  • Pharmaceutical and cleanroom floors
  • Electronics and semiconductor facilities requiring antistatic floors
  • Food processing and beverage production areas
  • Automotive workshops and service bays
  • Hospitals, laboratories and veterinary facilities
  • Parking garages and commercial car parks
  • Retail, supermarket and commercial floors

How it works in the coating system

A primer is the first layer in the coating system, and it decides how well everything that follows will adhere. Its job is to wet out the prepared substrate, key into its surface, and hold the coating together as one film.

Applied thin, a primer wets and anchors. Applied too thick, it becomes brittle, stresses the substrate and can peel as a sheet. The right dry film thickness for a primer is the one that covers the surface completely without building a film that can crack.

Purpose in the system: Applied directly to the prepared substrate, before any intermediate coat or topcoat.

Technical properties

The values below are the typical published range for this product family. The exact figures for your batch are confirmed on the batch certificate and the current technical data sheet.

Role in the coating systemFloor coating — primer, build coat, self-levelling or topcoat
Volume solids50–100 % depending on grade
Mixing ratio by volume3:1 to 5:1 by volume for the two-pack grades; single component for the primers
Typical dry film thickness0.2–1.0 mm (thin film) · 2–3 mm (self-levelling)
Theoretical coverage2–3 m²/litre at 2 mm; 6–10 m²/litre at 0.3 mm
Application methodsRoller · squeegee · notched trowel · spiked roller · broadcast for anti-slip
Application temperature window10–30 °C, minimum 3 °C above dew point
Suitable substratesMechanically prepared concrete slab
Finish / appearanceGloss, satin or matt; coloured, anti-slip, anti-static or 3D decorative
Principal resistanceTraffic, abrasion, chemicals, cleaning chemicals, oil and fuel
UV resistanceNot for outdoor use unless a UV-stable grade is specified
Adhesion to prepared steel> 1.5 MPa pull-off on prepared concrete
Salt spray performanceNot applicable
Chemical resistanceGood against detergents, oils and dilute acids and alkalis
Abrasion resistanceExcellent in the anti-slip and super-abrasion grades
Flash pointNot applicable (solvent-free grades)
Shelf life12 months unopened
Density1.05–1.55 g/cm³
Pack sizes4 kg · 20 kg kits

Surface preparation

  1. Test the concrete for moisture vapour emission before coating. A coating applied over a slab that is releasing moisture will blister, and no amount of primer will fix it.
  2. Grind or shot-blast the surface to remove laitance and open the concrete. A floor that has never been ground will not hold an epoxy coating under traffic.
  3. Repair all cracks, spalls and joints with a rigid or semi-rigid repair mortar matched to the movement characteristics of the joint.
  4. Remove all oil, grease and contaminants; shot-blast areas contaminated with oil.
  5. Vacuum the surface thoroughly and perform a final dust elimination with an air blower or tack cloth immediately before priming.
  6. Check that the concrete is at least 28 days old and that its surface temperature is at least 3 °C above the dew point.

Application procedure

Apply by brush, roller, conventional air spray or airless spray depending on the product. Primers are usually thin enough to spray well and wet out a blasted surface completely.

Work at a consistent wet film thickness and avoid over-application at edges, welds and connections — sags and runs at these details are the most common primer defect.

Allow the primer to reach the specified state before overcoating. On some systems a primer should be topcoated while it is still slightly tacky for best intercoat adhesion; on others a full cure with an abrasion between coats is required.

Mixing, ratio and induction time

Two-pack primers are mixed in the ratio stated on the data sheet, typically 4:1 or 5:1 by volume for epoxy primers and 3:1 for polyaspartic systems. Allow the full induction time before thinning and application, and observe the pot life strictly — a primer that has begun to gel will not perform.

Cure, recoat window and service readiness

Recoat windows depend on temperature, humidity and film thickness, but a typical epoxy primer is recoatable after 12 to 24 hours at 20-25 °C and needs 7 days for full cure. Polyaspartic primers cure far faster and may be recoatable within 2 to 4 hours. Exceeding the maximum recoat interval requires the surface to be abraded and re-cleaned before the next coat.

Coverage and thickness calculation

Typical dry film thickness is 40-80 µm for a conventional primer and 60-100 µm for a high-build anticorrosive primer. At 60 µm, one litre covers roughly 12-14 m². Always measure the wet film and calculate back from the solids content to confirm the specified DFT is being achieved.

Technical note. Coverage (m²/litre) = (volume solids × 10) / DFT (µm)

Worked example

Specified DFT1000 µm
Volume solids95 %
Theoretical coverage0.95 m²/litre
Total for the area100 m² → 95.0 litres

Advantages

  • Very high mechanical and abrasion resistance, far beyond painted or sealed concrete.
  • Excellent chemical resistance to oils, fuels, alkalis, detergents and cleaning agents.
  • Seamless, monolithic and easy to clean, with no joints to harbour dirt.
  • Self-levelling grades produce a flat, attractive surface with no roller marks.
  • Antistatic and static-conductive grades provide a controlled path to earth for explosive and sensitive environments.
  • Solvent-free formulations available with very low odour and near-zero VOC.

Limitations and precautions

  • Surface preparation is the single biggest factor in the performance of a floor coating and is routinely under-budgeted.
  • Moisture in the slab will cause blistering; a moisture test is mandatory.
  • Full cure takes time — a floor cannot be returned to traffic immediately, and heavy loads can imprint the surface if placed too early.
  • UV exposure will amber and eventually discolour standard epoxy floors, which is why aliphatic polyurethane or polyaspartic topcoats are used in sunlit areas.
  • Epoxy floors are slippery when wet unless an anti-slip grade or aggregate broadcast is specified.

Storage and shelf life

  • Store component A and B in their original sealed containers in a cool, dry, ventilated store between 5 °C and 35 °C.
  • Keep the hardener away from moisture and direct sunlight.
  • Do not allow the components to freeze — freezing destroys the hardener.
  • Rotate stock first-in-first-out and observe the labelled shelf life, typically 12 months unopened.

Safety, PPE and ventilation

  • Epoxy hardeners are skin sensitisers. Wear nitrile gloves, safety goggles and protective clothing and change gloves frequently.
  • Use an organic-vapour cartridge respirator when mixing or applying in enclosed or poorly ventilated spaces.
  • Ensure good ventilation and wear knee pads and protective footwear for the grinding and preparation work.
  • Wash skin immediately with soap and water if contact occurs.
  • Collect grinding dust and coating waste for proper disposal rather than washing it into drains.

Quality control and inspection

  • Check the surface preparation standard and the blast profile before coating begins — this is recorded on the inspection report.
  • Verify film thickness by wet film gauge during application and by magnetic induction gauge or dry film readings on the completed coat.
  • Holiday test the primer before overcoating, particularly over welds, connections and edges.

Pricing and how to order

Delshine quotes this product per square metre at a specified dry film thickness, or per drum/litre depending on the project. The material cost is usually the smallest part of the installed cost — surface preparation, access and application labour dominate. Send us the substrate, the service conditions and the required DFT and our technical team will return a full system recommendation with a firm price.

Epoxy floor coatings are priced per square metre at a specified build, and preparation is normally the largest single cost. A 1,000 m² self-levelling floor at 3 mm needs roughly three drums of coating plus primer, aggregate, abrasive discs and labour. The specification should always include preparation and moisture testing, because those are what determine whether the floor lasts one year or ten.

Frequently asked questions

The questions below are the ones our technical team is asked most often about this product family.

What is the difference between self-levelling and thin-film epoxy floor?

A self-levelling floor coating is a high-build, low-viscosity system that flows out to a flat, level surface during application — typically 2-3 mm. A thin-film system is applied in a much lower build of 0.2-1 mm with one or two coats and is much more dependent on the quality of the substrate. Use self-levelling where appearance, hygiene or heavy traffic matter, and thin-film where budget and a basic sealed floor are the requirement.

Do I need to grind my concrete floor before epoxy?

Yes. Grinding removes the laitance — the weak dusty top layer that separates from the slab — and opens the pores so the primer can key into the concrete. Acid etching is not an adequate substitute for a floor that will carry traffic. Diamond grinding to a fine profile is the industry standard for a floor that has to last.

What is the anti-static epoxy floor coating used for?

Antistatic and static-conductive floor grades are used in electronics manufacturing, semiconductor cleanrooms, pharmaceutical production and chemical handling areas where electrostatic discharge could ignite a sensitive component or an explosive atmosphere. The conductive grade provides a controlled path to earth and typically requires an earth connection and a conductive primer. The two grades differ in surface resistance, so specify the target resistance value.

How long does an epoxy floor take to cure?

Foot traffic after 12-24 hours at 20-25 °C, light forklift traffic after 3 days, full chemical resistance after 7 days, and full cure after 21-28 days. Heavy point loads and pallets should not be placed on the floor for the first week. In cold conditions every one of these figures extends, which is why floors should be coated in a controlled temperature window.

Can epoxy flooring be applied over an existing epoxy floor?

Sometimes. If the existing floor is sound and not peeling, it can be abraded, cleaned and overcoated with a new epoxy system. If it is delaminating or contaminated, it must be removed mechanically. Test the adhesion on a trial area and check for amines, which can cause a plasticising effect at the interface.

What is the anti-slip orange-peel topcoat?

It is a self-levelling epoxy formulated with a fine aggregate or a texturing agent that creates a controlled textured surface. The texture gives mechanical grip in wet or oily areas where a smooth floor would be dangerous, while keeping the coating far easier to clean than a full aggregate-broadcast system. It is the usual specification for commercial kitchens, workshops and wash-down areas.

These products are normally used in the same system as the product described above.

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