PMMA Coating & MMA Acrylic Systems for Bridge Decks, Roads and Floors

PMMA coating systems — poly(methyl methacrylate) — and MMA (methyl methacrylate) acrylic coatings are cold-applied resin systems that cure in about one hour, so a bridge deck or road marking can return to service the same day. This page covers the full system: PMMA resin, primer, initiator, accelerator, filler and topcoat, supplied as separate components for contractors to mix and apply on site.

Terminology: MMA is methyl methacrylate, the monomer. PMMA is poly(methyl methacrylate), the polymerised resin used in the coating. In the trade both names, and the shorter form “MMA coatings”, refer to the same rapid-cure coating family.

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What Is a PMMA Coating, and How Does It Compare with Epoxy?

Choose MMA or PMMA when the area must reopen the same day: MMA cures in hours rather than days and tolerates a wider temperature range during application. Choose epoxy when you need a thick, chemically resistant build and can accept a longer curing window. The table below compares the five chemistries we supply.

Coating chemistry compared for industrial floors, decks and pavements
Chemistry	Cure / return to service	Application temperature	Best fit	Main limit
MMA / PMMA	Fast — hours, not days	Wide, including cold conditions	Bridge decks, rapid-turnaround decks, road and pavement marking	Strong solvent odour during application; needs trained applicators
Эпоксидная смола	24–72 hours between coats	Moderate; sensitive to low temperature	General industrial floors, chemical resistance, thick builds	Long curing window; yellows under UV
Полиуретан	Умеренный	Умеренный	UV-stable topcoats, flexible systems	Moisture-sensitive during cure
Cementitious urethane	Умеренный	Умеренный	Wet and thermal-shock areas, food plants	Thicker sections; heavier installation
Polyaspartic / polyurea	Fast	Умеренный	Fast-return floors, high-build topcoats	Very short pot life; needs fast application

How Is a PMMA Coating System Made Up?

A complete MMA or PMMA system is supplied as separate components, mixed on site in the order below. Each stage has its own product code, so a contractor can reorder one component without replacing the whole system.

DurAcryl™ MMA acrylic system — component sequence
Stage	Function	Продукт	Mix ratio / dose
1. Primer	Seals the substrate, promotes adhesion	Акриловая грунтовка DurAcryl™ P-101 MMA	Single component — no mixing. Coverage 2–3 m²/L (80–125 sq ft/gal); pot life 10–20 min at 20 °C
2. Resin	Main body of the coating	DurAcryl™ G-201 MMA Acrylic Resin · Cove MMA-Based Acrylic Resin	G-201 self-levelling mix: 7 qt (6.5 L) resin to one 40 lb (18.1 kg) bag of filler. Cove: 8–10 linear ft per quart at 1/8″ × 4″
3. Initiator	Starts the cure reaction	DurAcryl™ Cure MMA Resin Initiator	1.2–2 % of part B by weight, raised as the temperature falls. Dissolve 15–45 s; working time 15–20 min at 20 °C
4. Accelerator	Sets the cure speed for the ambient temperature	DurAcryl™ LTC MMA Accelerator	0.5–3.0 oz per US gallon of resin, set by temperature — 0.5 oz (4 mL/L) at 0 °C, 1.5 oz (12 mL/L) at −10 °C, 3.0 oz (24 mL/L) at −18 °C
5. Filler / aggregate	Builds body, adds slip resistance	DurAcryl™ SL Заполнитель MMA Шламовый заполнитель	SL Binder Resin : SL Filler = 1 : 2 by weight. Prime first at 8–10 m²/L
6. Topcoat	Wear layer and colour	DurAcryl™ T-301 · T-303 MMA Topcoat Resin	Coverage 1.5–3 m²/L; pot life 10–15 min; recoat 45–60 min at 20 °C. Hardener ratio: request the TDS
ESD variant	Conductive path for electronics areas	DurAcryl™ ESD MMA Resin	Two coats to reach 1×10&sup6;–1×10&sup9; Ω (ASTM F150 / ANSI/ESD S7.1). Coverage 1.8–2.6 m²/L per coat
Doses are the manufacturer’s published figures. Coverage varies with surface profile — confirm quantities against your own slab before ordering.

Which PMMA or Acrylic Coating System Fits Your Application?

Match the substrate and the traffic it carries to one of the systems below. Each row lists the products we supply for that application; the system can be ordered as a set.

Application to system selection
Приложение	Субстрат	Продукция
Bridge deck waterproofing	Concrete bridge deck	DurAcryl™ Bridge Deck Waterproofing System (P-101 + G-201 + Cure + T-301)
Steel bridge deck paving	Orthotropic steel deck	Система окраски стальных мостовых настилов DurAcryl™
Road and pavement marking	Asphalt or concrete	2KL Two-Component Road Marking Paint · ColorFuse MMA Spray Marking · ColorMark MMA Colored Marking · Water-based Traffic Paint
Non-slip pavement	Asphalt or concrete	BC / TS PMMA Color Non-Slip Pavement Coating
Pedestrian deck coating	Concrete or timber deck	DurAcryl™ 075 Эластомерное акриловое покрытие для пола пешеходного класса
Polymer concrete repairs	Бетон	DurAcryl™ Tex MMA Полимерный бетон
Static-dissipative areas	Бетон	DurAcryl™ ESD MMA Resin

What Site Conditions Does a PMMA Coating Need?

Applicable range — the figures below are the working limits for our MMA systems. Confirm them against the product TDS for the specific system before you mobilise.

Температура субстрата: [TO BE FILLED] °C. Below the lower limit the cure reaction slows and the recoat window lengthens.
Substrate moisture: [TO BE FILLED] %. MMA systems tolerate a higher moisture content than epoxy, which is one reason they are used on bridge decks.
Ambient relative humidity: [TO BE FILLED] %.
Подготовка поверхности: [TO BE FILLED]
Pot life after mixing: [TO BE FILLED] minutes at [TO BE FILLED] °C. Mix only what can be applied within the pot life.

PMMA Coating Coverage, Packaging and Ordering

Упаковка: [TO BE FILLED]
Охват: [TO BE FILLED]
Minimum order quantity: [TO BE FILLED]
Lead time: [TO BE FILLED] days after deposit.
Sample: [TO BE FILLED]
Technical documents: the TDS and SDS for each component are available on request.

For a formal quotation, send the substrate type, area in m² and required film thickness.

Frequently Asked Questions about PMMA Coating Systems

How fast does an MMA coating cure, and when can traffic return?

MMA resin cures in minutes to hours, not days. On our sand-broadcast system the wear coat sets in about 40 minutes and the surface is ready for traffic, and the system reaches a fast cure of about 1 hour, with a tack-free time of 30-60 minutes in the technical data. On our spray-applied system the coating cures in about 30 minutes and the area can be taken into service after 1 hour. On gas station forecourts the same 1-hour cure is used so the station stays open during the work.

Can MMA coatings be applied in cold weather?

Application range: -20 °C to +35 °C for our MMA anti-slip systems, and they still cure normally at -30 °C, which is the main reason MMA is chosen for winter work and cold stores. Note the separate limit for the bridge deck waterproofing system: -10 °C to +50 °C, relative humidity up to 85%, and a steel temperature at least 3 °C above the dew point. All MMA application stops during rain, snow or condensation.

What is the difference between MMA and PMMA?

MMA is methyl methacrylate, the monomer; PMMA is poly(methyl methacrylate), the polymerised resin used in the coating. Both names refer to the same rapid-cure coating family, and the terms are used interchangeably in the trade.

Should I specify MMA or epoxy for a bridge deck?

Choose MMA or PMMA where the deck must return to service the same day and the application window is narrow. Choose epoxy where a thicker, chemically resistant build is required and a longer curing window is acceptable.

How do I mix the resin with the initiator and the accelerator?

Mix in this order. The initiator goes into part B only, never into part A. Dose it at 1.2-2% of part B by weight and adjust within that range for the ambient temperature. Stir part B until the initiator is fully dispersed, then combine A and B at 1:1 by weight. Use three separate mixers for part A, part B and the combined mix, and never share them between components. Mix only what can be applied within the pot life.

What substrate preparation does an MMA system need?

Concrete: sweep clean with no standing water, oil, dust or loose material; strip thin repairs of the old material; fill cracks and hollows flush with fast-repair mortar; roll on the primer, which closes the surface capillaries and raises the surface strength. Dry any damp areas with a burner before coating. Asphalt: the same cleaning, then the primer, then set out the lines and tape the boundary. Steel deck: blast to Sa 2.5 with 50-100 micron roughness, then apply the anti-corrosion primer within 3 hours of passing the blast inspection.

Are MMA coatings suitable for a multi-storey car park deck?

MMA is used on parking areas. Our anti-slip system lists parking areas among its applications, and our water-based marking system is specified for underground car parks as well as highways and city roads. For a full multi-storey deck the waterproofing layer must be added beneath the wear course; the layer sequence in this range is the steel bridge deck build, so send us the deck build-up and we will confirm the layer sequence and quantities before you price the job.

What packaging and minimum order quantity do you supply, and what is the lead time?

Consumption, so you can size the order. Sand-broadcast system: 2.5-3.5 kg/m² overall, of which the base coat alone takes about 2.6-3 kg/m² at 1-2 mm. Spray-applied system: 3-3.5 kg/m². Bridge deck: MMA base coat 2.5-3 kg/m² and a spray texture wear layer of 2-3 mm at 3-3.5 kg/m²; the waterproofing build is Zed S94 at 100-200 g/m², resin waterproof membrane at 2,500-3,500 g/m² to a dry film of at least 2 mm, and Tack Coat N2 at 100-200 g/m². Packaging, minimum order quantity and lead time are confirmed with the quotation.

Not sure which system fits your project?
Send us the substrate, the area in m² and the traffic it will carry — we will recommend the product combination and send the TDS.