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Attention: This product is classified as a dangerous good. Shipping costs will be adjusted accordingly.
Duram 195 is a single-pack, moisture-curing polyurethane membrane engineered for high-stakes waterproofing in non-UV-exposed structural slabs and retaining walls. This aromatic formulation cures into a seamless elastomeric film with Class III extensibility exceeding 360% elongation, ensuring watertight integrity across joints and dynamic cracks without the risk of re-emulsification.
When integrated into a compliant system with Multithane ATC for UV protection, Duram 195 meets AS 4654.1 standards while providing the hydrostatic resistance necessary for permanent immersion in planter boxes and below-ground pits.
Frequently Asked Questions
Can Duram 195 be used in exposed exterior areas?
Yes, with a topcoat. Duram 195 must be over-coated with Multithane ATC for UV exposure. Without the aliphatic topcoat, the aromatic PU will slowly degrade in sunlight, reducing service life.
What thickness and coverage should I allow for?
Floors/tanking typically require ~1.5 mm DFT (two coats at ~0.75 L/m² per coat; total ~1.5 L/m²). Vertical surfaces are typically ~1.0 mm DFT. Always verify coverage against substrate porosity and site conditions.
Can I tile directly over Duram 195?
Direct tile adhesion is not advised. Best practice is to top with a sand/cement screed (with appropriate bonding agents if required) and provide movement joints in accordance with AS 3958.1.
What are the typical cure times?
Indicative guide: Touch dry ~4–6 h, recoat 6–24 h, and full cure ~48 h+. Conditions such as temperature, humidity, substrate and ventilation will affect actual times.
Applications & Benefits
| Application / Use Case | Key Benefit | Primary Trades |
|---|---|---|
| Wet areas (floors & upturns) | Seamless Class III film under screeds/tiles; no re-emulsification | Tilers, Waterproofers |
| Balconies, decks, terraces, podiums | AS 4654.1 compliance when top-coated; durable movement accommodation | Waterproofers, Builders |
| Planters, retaining walls, landscaped areas | Hydrostatic resistance; robust under protection/drainage layers | Remedial, Waterproofers |
| Pits, bunding, water-retaining structures | Suitable for immersion; chemical resistance for demanding sites | Remedial, Asset Maintenance |
| Roofs & gutters (with ATC topcoat) | UV-stable system using aliphatic Multithane ATC over Duram 195 | Waterproofers, Builders |
Applying Duram 195: Enhanced Protocols & Best Practices
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Surface Preparation
Ensure substrates are sound, dry and clean. Repair blowholes/defects with Resiflex FC; allow to cure. Rebate wastes and seal perimeters.
Moisture Control
If moisture risk exists, specify two coats of Primeseal MC before membrane to prevent gassing.
Joint Detailing
Seal cracks/joints with Resiflex FC; reinforce with Leak-Seal Tape where live movement is expected.
Timing: Proceed only once primers are dry per their TDS.Pro Tip: Freedom from surface water and continual dampness is essential for film integrity. -
Membrane Application
Apply by brush, roller, broom or squeegee in two coats to achieve target DFT.
Floors/Tanking
~1.5 L/m² total; aim for ~1.5 mm DFT (each coat ~0.5 mm dry).
Verticals/Non-tanking walls
Typically ~1.0 mm DFT (as specified); water-resistant non-tanking walls minimum ~0.75 L/m² at ~0.5 mm DFT.
Timing: Touch dry ~4–6 h; recoat 6–24 h; full cure ~48 h+ (environment dependent).Pro Tip: Apply the second coat within 36 h for optimal inter-coat bond. If exceeded, re-prime. -
Top-Coating & Coverings
In exposed exterior areas, over-coat Duram 195 with Multithane ATC (~3–4 m²/L). For tiling, top with sand/cement screed and provide joints to AS 3958.1.
Protection Layers
Roofs/podiums: protection sheeting, geotextile/drainage cell before ballast/pebbles. Ground works: protection and drainage layers before backfill.
Solvent Thinning (If Needed)
Only with Duram Solvent, max ~1 L per 15 L pail; consult technical advice. Do not use alternative solvents.
Timing: Allow Duram 195 to cure before top-coating or covering.Pro Tip: Monitor for bubbling/pin-holing in warm, dry conditions; lightly over-roll wet membrane if needed.
Limitations & Safety
Product Limitations
Not designed for long-term direct UV exposure without an aliphatic topcoat (use Multithane ATC).
Not a trafficable membrane (occasional construction foot traffic only).
Do not apply to damp/slightly damp substrates — risk of gassing/bubbling and poor adhesion.
Not suitable for prolonged contact with chlorine concentrations >10 ppm.
Direct tile adhesion is not advised; use a screed/topping system.
Safety & Handling Requirements
Personal Protective Equipment
Wear chemical-resistant gloves, eye protection and suitable protective clothing. Avoid skin and eye contact with uncured product.
Ventilation Requirements
Use in well-ventilated areas. Manage vapours appropriately, especially indoors or in confined spaces.
Fire & Handling Precautions
Solvent-based and combustible when uncured. Keep away from ignition sources. Store cool and dry, away from heat and flames.
Emergency First Aid
Eyes:
Rinse cautiously with water for several minutes; remove contact lenses if present and easy to do; continue rinsing and seek medical advice.
Skin:
Wipe excess and wash with soap and water. Do not use solvents on skin.
Inhaled:
Move to fresh air and rest. Seek medical attention if symptoms persist.
Swallowed:
Rinse mouth. Do not induce vomiting. Seek medical attention immediately.
Seek medical attention immediately in all cases of serious exposure.
Duram 195 Application Guide
Concrete / Cementitious Surfaces
Surface Preparation
Ensure sound, dry, clean and free from laitance, dust, curing compounds and contaminants. Rectify blowholes/defects with Resiflex FC or non-shrink mortar; allow to cure.
Primer Requirements
Primer required/recommended
Use Primeseal MC (risk of moisture) or Primeseal SP per TDS. Two coats of Primeseal MC where entrapped moisture is possible.
Duram Primeseal MC / Primeseal SPFC/CFC Sheeting & Masonry
Surface Preparation
Clean and dry. Treat joints: seal with Resiflex FC; reinforce live cracks/joints with Leak-Seal Tape before field coats.
Primer Requirements
Primer required/recommended
Prime per TDS. Additional priming may be required on porous or dusty substrates.
Duram Primeseal MC / Primeseal SPMetal (Prepared)
Surface Preparation
Remove rust and contaminants; apply rust converter if required before priming.
Primer Requirements
Primer required
Use ME Primer; alternative Primeseal MC where specified.
Duram ME Primer / Primeseal MCTimber Sheets / Plywood / Particleboard
Surface Preparation
Clean, dry and secure. Butter edges or seal joints with Resiflex FC; allow to cure. Reinforce with Leak-Seal Tape where movement is expected.
Primer Requirements
Primer required
Prime with Primeseal MC (timber/ply/particleboard) per TDS before membrane application.
Duram Primeseal MCPlastics & Angles (e.g., wastes, water stops)
Surface Preparation
Rebate floor wastes; seal perimeters with Resiflex FC. Ensure components are securely fixed.
Primer Requirements
Primer recommended as applicable
Prime plastics with Superprime 711 where required. Some retrofitted flanges may not need priming—seek technical guidance.
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