Pool System Build-Up
- 1 Concrete Substrate
- 2 Crack Repair (if required)
- 3 ACTFLEX FLEXPLUS
- 4 ACTFLEX HYDROPLUG
- 5 ACTFLEX AT MESH
- 6 ACTFLEX 988 CWP (2 Coats)
- 7 Tile Adhesive
- 8 Pool Finish
ACTFLEX MB200 High-Performance Pure Polyurethane Resin Primer
or 4 interest-free payments with
One-coat PU bonding primer, two-coat moisture vapour barrier. Certified to ASTM E96, holds back slabs up to 98% RH.
ACTFLEX MB200 is a single-pack, solvent-free polyurethane primer and moisture vapour retarder. One coat primes cementitious substrates for FORSPEC membranes, screeds and levellers. Two crosswise coats make a moisture vapour retarder rated to 98% substrate RH, so damp slabs can take timber and resilient floors.
Where to use it
- Bonding primer under FORSPEC membrane, screed and levelling systems on cementitious substrates
- Moisture vapour retarder under timber, resilient and moisture-sensitive floor coverings
- Concrete and cementitious subfloors with residual damp within the stated limit
Why waterproofers buy it
- Certified moisture vapour transmission of 4.34 g/m²/24 h to ASTM E96, XTecGen Report 514-1
- Two crosswise coats hold back substrate moisture to 98% RH
- Solvent free, approximately 100% solids. Roller application, no mixing
- Foot traffic and full cure in about 4 hours. Recoat in 1 to 4 hours
- Approximately 4 m² per kg per coat. 20 kg and 5 kg packs
- 10 year Forspec product warranty
Coverage
Approximately 250 g/m² per coat.
20 kg: approximately 80 m² one coat, 40 m² as the two-coat moisture barrier.
5 kg: approximately 20 m² one coat, 10 m² two coats.
Not for
Waterproofing (it retards vapour, it does not resist hydrostatic pressure), liquid water, rising damp or negative hydrostatic pressure, below 5°C or above 35°C, or a single coat where you need the moisture rating. Without a sand broadcast, overcoat within 48 hours.
All times at 25°C and 50% RH.
Certified to ASTM E96 at 4.34 g/m2/24 h under XTecGen Report 514-1
Two crosswise coats retard moisture to 98% substrate relative humidity
Trafficable and ready to overcoat in about 4 hours
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ACTFLEX MB200 High-Performance Pure Polyurethane Resin Primer
20KG
The Waterproofing Shop
22/872 Canterbury Road
Roselands NSW 2196
Australia
Product Details
How to Use
Technical Specifications
ACTFLEX MB200 High-Performance Pure Polyurethane Resin Primer
Sale price$482.00
Frequently bought together
System Build-Up Guide
Correct application makes all the difference.
Retaining Wall System Build-Up
- 1 Concrete Substrate
- 2 Crack Repair (if required)
- 3 ACTFLEX MS PRO
- 4 ACTFLEX AT MESH
- 5 ACTFLEX 988 CWP (2 Coats)
- 6 Protection Board (Optional)
- 7 Drainage System
- 8 Backfill
Tank System Build-Up
- 1 Concrete Substrate
- 2 Crack Repair (if required)
- 3 ACTFLEX FLEXPLUS
- 4 ACTFLEX AT MESH
- 5 ACTFLEX 988 WMP (2 Coats)
- 6 Protective Coating (Optional)
- 7 Water
Technical overview
Key applications
- Bonding primer for FORSPEC membrane, screed and levelling systems on cementitious substrates
- Moisture vapour retarder beneath timber, resilient and moisture-sensitive floor coverings
- Concrete and cementitious subfloors with residual damp within the stated limit
- Ceramic, terrazzo and natural stone substrates
- Well-bonded adhesive and levelling compound residues
- Interior and exterior applications
- Surface consolidation of dusty and friable cementitious substrates
Surface suitability
- Concrete and cementitious subfloors (residual damp within the stated limit, verified by in-situ relative humidity probe to ASTM F2170)
- Ceramic, terrazzo and natural stone substrates (structurally sound, dry and free from dust, grease, laitance and weak layers)
- Well-bonded adhesive residues (confirmed sound and firmly adhered, with anything drummy or loose removed)
- Well-bonded levelling compound residues (confirmed sound and firmly adhered, with anything drummy or loose removed)
- Dusty and friable cementitious substrates (mechanically prepared by grinding, shot-blasting or sanding, then vacuumed)
Not a waterproofing membrane. ACTFLEX MB200 retards moisture vapour transmission and does not resist hydrostatic pressure, and it is not for use where liquid water, rising damp or negative hydrostatic pressure is present. One coat is a primer and two crosswise coats are a moisture barrier: a single coat does not deliver the moisture vapour rating. Do not dilute under any circumstances. Do not apply below 5C or above 35C substrate and ambient temperature. Do not apply to loose, friable or contaminated substrates without full mechanical rectification. Avoid puddling and uneven film build, as pooled material will not cure correctly and creates a weak layer. Where no sand broadcast is applied, the next layer must follow within 48 hours, beyond which the surface must be mechanically reactivated or re-primed. Always confirm the coating specification and number of coats with a FORSPEC representative before work begins. MB200 is a HAZARDOUS CHEMICAL and DANGEROUS GOODS, signal word Danger: it is fatal if inhaled, causes skin and serious eye irritation, may cause an allergic skin reaction and asthma symptoms, is suspected of causing cancer and causes damage to organs through prolonged or repeated exposure. Do not breathe mist, vapours or spray, use only outdoors or in a well-ventilated area, and wear protective gloves, protective clothing, eye protection and face protection.
Calculate your coverage
You will need:
ACTFLEX MB200 High-Performance Pure Polyurethane Resin Primer
20kg kit
0 Kits
Total coverage: 0 m²
This is an estimate only. Add 10% for wastage.
Technical Specifications
| Product Type | One-component, solvent-free, moisture-curing pure polyurethane primer |
| Colour | Light yellowish |
| Packaging | 20kg (approx. 18 L), 10kg (approx. 9 L), 5kg (approx. 4.5 L) and 1kg (approx. 0.9 L) |
| Density | 1.10-1.15 g/cm3* |
| Viscosity | 600-800 mPa.s at 23C* |
| Solids Content | Approx. 100% - solvent-free* |
| Coats as Bonding Primer | 1 |
| Coats as Moisture Vapour Retarder | 2, applied crosswise |
| Consumption | Approx. 250 g/m2 per coat (approx. 0.225 L/m2) |
| Coverage | Approx. 4 m2/kg; approx. 4.4 m2/L per coat |
| Moisture Vapour Transmission | 4.34 g/m2/24 h at 0.3mm DFT (ASTM E96, XTecGen Report 514-1) |
| Certified Film Build | 2 coats at 0.2mm wet film, 0.3mm total DFT (ASTM E96, XTecGen Report 514-1) |
| Maximum Substrate Moisture at Application | Substrate RH up to 98% by ASTM F2170 in the certified two-coat system |
| Drying Time, Absorbent Substrates | 60-90 minutes at 25C, 50% RH* |
| Drying Time, Dense Substrates | 60-150 minutes at 25C, 50% RH* |
| Recoat Interval | 1-4 hours at 25C, 50% RH, substrate absorbency dependent |
| Foot Traffic | Approx. 4 hours at 25C, 50% RH |
| Full Cure | Approx. 4 hours at 25C, 50% RH |
| Application Temperature | +5C to +35C |
| Service Temperature Once Cured | -40C to +80C |
| Shelf Life | 24 months, unopened, stored dry and frost-free |
| VOC Certification | Not currently held - the low VOC claim is a manufacturer statement |
| Hazard Classification | HAZARDOUS CHEMICAL and DANGEROUS GOODS, signal word Danger, Poisons Schedule S6, SDS Chemwatch 7988-52 |
| * Typical Forspec R&D characteristic values | |
Real Projects. Real Results.
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Before
After
Pool Renovation
Gold Coast, QLD
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Before
After
Below Ground Retaining Wall
Sydney, NSW
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Before
After
Concrete Water Tank
Perth, WA
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Before
After
Commercial Podium
Melbourne, VIC
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Before After
Swimming Pool Construction
Brisbane, QLD
Watch the install
Step-by-step from prep to top coat. Filmed on the tools, not in a studio.
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Frequently asked questions
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What is ACTFLEX MB200 used for?
CompatibilityMB200 is a moisture vapour retarder and primer applied beneath coatings, screeds, timber, and resilient floors over concrete substrates. Blocks moisture transmission up to 98% RH - critical for moisture-sensitive flooring over fresh or damp slabs.
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What moisture levels can it block?
PerformanceMB200 blocks moisture transmission up to 98% RH with two cross-rolled coats. The 100% solids pure polyurethane resin creates an impermeable vapour barrier that lets you install moisture-sensitive flooring earlier.
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Coverage and application?
InstallationCoverage is approximately 4-4.4 m² per litre (4 m² per kg). Apply 1-2 coats at 0.25mm WFT each, cross-rolled at 90 degrees for full coverage. Single-component, ready-to-use - no mixing needed.
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What substrates does it work on?
CompatibilityWorks over concrete, terrazzo, natural stone, and cementitious subfloors. Touch-dry in 60-90 minutes on absorbent surfaces (60-150 minutes on dense), full cure approximately 4 hours.
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Service temperature range?
PerformanceService temperature range -40°C to +80°C once cured - the widest range in the Forspec primer family. Suitable for cold-storage floors, plant rooms, and outdoor applications.