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Waterproof Roofs with UV Resistant Liquid Membrane :

 
Duromastic AC: 
  
CETEC Test Certification for roofs,walls,fascias, balconies.
  

It is a waterproof and UV resistant liquid membrane used either for long-term waterproofing or as a decorative coating. It cures to form a flexible waterproof membrane or coating (by varying the thickness and number of coats) that is resistant to weathering, fungi and algae. Although the membrane is waterproof it allows the substrate to breathe, reducing the risk of blistering. It has been used for over 20 years as a roof membrane and protective coating.

 
PRINCIPLE CHARACTERISTICS  

 

CETEC Certified Rating  

VOC-51 gms/ltr (SCAQMD Method 304-91)  

Single component  

Environmentally friendly  

Low odour  

Permanently flexible  

Seamless  

UV stable, weather resistant  

Fungal and algae resistant  

Easily maintained  

Non toxic  

 

USE AREAS  

 

Concrete roofs  

Facades  

Foot trafficable roof deck membrane  

Concrete or blockwork walls  

Asbestos roof encapsulation  

Parapet Walls  
 

 

PACKAGING  

15 Litre  
 

General  

   

Colour  

Grey or White and colours to order, low sheen  

Dry Time  

Touch dry 1-2 hours @ 25 C  

Recoat  

4-6 hours @ 25 C  

Top Coating  

May be top coated with DURO MASTIC SR or DURO MASTIC Non Slip for greater serviceability.  

Coverage  

  MEMBRANE-Min 2 coats each @ 1.0 Litre/m2 [1m2/Litre] COATING-Min 1 Coat @ 0.25-0.3 Litre/m2 [3-4m2/Litre]  

Wet Film Thickness  

1mm thick as a membrane,0.25mm thick as a coating  

Dry Film Thickness  

1.0mm - 1.2mm as a membrane, 0.13mm -0.17mm as a coating  

Elongation at Break  

200-300% at 25 C  

Moisture Vapour Transfer  

0.45g/h-m2  

Solids Content  

52% by volume   

Shelf Life  

12 months in unopened containers stored @ 20 C

  

PREPARATION  

   

All surfaces shall be sound, clean, dry and free of release curing agents and other contaminants. Check adhesion by applying to a test area. Concrete to be at least 28 days old, dry and free of voids and blowholes. Make sure painted surfaces are sound and remove any chalking by pressure spray or light detergent wash. Roof decks should be properly drained for long-term service ability of it. A 12mm fillet of neutral cure silicone sealant is to be applied at all surface junctions.  

   

Concrete: Remove laitance or unsound concrete by water blast or mechanical means. Fill all porous or honeycombed concrete with appropriate and approved material. Compressed Fibre cement sheets to be installed as per manufacturers specification and all joints to be sealed. Movement cracks and cold joints to be cut out and filled with neutral cure silicone sealant, then overlaid with DuroAC reinforced with 140mm min. wide bandage.  

   

Note: All sheet joints to have an expansion gap. Seal all surface joints and screw holes with neutral cure silicone sealant, and further seal joints and spread across a min. 20mm of the surface and overlay with tape and DuroAC reinforced with 140mm (min.) wide bandage.  

   

PRIMING  

Prime surfaces with one or more coats of WBE at a rate of 4-6 m2/ litre.  

   

APPLICATION  

   

Reinforced  

   

To the prepared surface, apply a first coat of DuroAC by brush or roller at approximate rate of 1litre/m2. Immediately lay the reinforcing fabric into the wet surface, then apply another coat and work in carefully by brush or roller to saturate the fabric. Check when dry and apply a further coat if necessary to give a fully waterproof lining at  the correct DFT. Ensure a minimum coverage of 1.5 litre/m2.       

   

Unreinforced  

   

Where reinforcing fabric is not utilised, apply 3 or more coats of DuroAC for a total usage rate of 1.5 litres/m2, ensuring even coverage by brush or roller.  

   

PRECAUTIONS  

   

Do not apply above 32 C or below 8 C ambient temperature. Be sure coating is cured before contact with water. Wash equipment with water before dry. Do not fix tiles until fully cured, normally 3 - 4 days. Provide sufficient expansion and contraction control joints in overlaying tiling and topping. This is particularly important with FC sheet flooring. Do not expose to solvents. Clean periodically to maintain surface and re-coat when necessary.     

   

CLEANUP
  

Use fresh water before material has set. Remove cured material with mineral turps. Cured DuroAC may be tiled over.

 
Duromastic AC MSDS:  
  

 

1.CHEMICAL PRODUCT AND COMPANY IDENTIFICATION  

 

UN NO:  
None allocated  
D.G. Class:  
None allocated  
Pack. Group:  
None allocated  
HAZCHEM:  
None allocated  
SUB. RISK:  
None allocated  
SUSDP:  
None allocated  

 

 

PROPER SHIPPING NAME : DuroAC, DuroAC CLEAR  

PRODUCT USE: Waterproof Membrane Coating  

 

2. COMPOSITION / INFORMATION ON INGREDIENTS  

 

Component  

CAS No  

Weight %  

Latex Emulsion Not Required  

Not Required  

>30  

Titanium dioxide    

13463-67-7  

0-10  

Inorganic extenders  

Not Required  

0-50  

Additives  

Not Required  

<10  

Water  

7732-18-5  

20-50  

 

 
See Section 8, Exposure Controls / Personal Protection  

 

3. HAZARDS IDENTIFICATION  

 

Not hazardous in normal industrial use.  

 

4. FIRST AID MEASURES  

 

Eyes: Immediately flush with water for 15 minutes. Get medical advice if irritation develops or persists.  

Skin: Take of all contaminated clothing. Wash contaminated area with soapy warm water. Get medical advice if irritation develops or persists. Wash contaminated clothing and clean shoes before reuse.  

Inhalation: Remove to fresh air. If not breathing, give artificial respiration, preferable mouth to mouth. If breathing is laboured, give oxygen and consult a physician immediately.  

Ingestion: Consult a physician immediately. If vomiting occurs, aspiration into the lungs may cause lung damage. Never give anything by mouth to an unconscious person.  

 

5. FIRE FIGHTING MEASURES  

 

Flash Point: Not Applicable  

Auto-ignition Temperature: No data available  

Lower Explosive Limit: No data available  

Upper Explosive Limit: No data available  

Suitable Extinguishing Media:  

Use as appropriate for surrounding fire.  

Protective Equipment for Fire Fighting:  

Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.  

Unusual Fire and Explosion Hazards:  

The product is not flammable.  

Thermal decomposition of this product may produce toxic fumes.  

 

6. ACCIDENTAL RELEASE MEASURES  

 

Caution: Floor may be slippery. Eliminate all sources of ignition. Provide sufficient ventilation. Wear appropriate personal protective equipment including gloves and safety glasses. Do not breathe vapour. Contain spill. Do not allow into drains or waterways. Take up with absorbent material (e.g. sand, vermiculite, or commercially available inorganic absorbent). Use non-sparking tools and equipment. Fill into suitable containers for disposal.  

Dispose of empty containers in accordance with federal, state and local laws.  

 

7. HANDLING AND STORAGE  

 

Handling: Observe normal standards of industrial hygiene for handling chemicals. Use in a well ventilated area. Avoid breathing vapour and contact with skin and eyes. Wear gloves, long sleeved shirt, and eye protection. A sensitised person should not be exposed to the product.  

Storage: Store in tightly sealed containers to protect from atmospheric moisture. Store in a cool and dry area. Keep away from ignition sources such as fire, flame and sparks.  

Empty container warning: Do not reuse empty drums or containers unless professionally cleaned. Do not cut, drill, grind or weld on or near empty containers.  

Other Precautions: Do not eat, drink or smoke when using the product.  

 

8. EXPOSURE CONTROLS / PERSONAL PROTECTION  

 

 

NOHSC  

 

TWA  

 

STEL  

Component  

(ppm)  

(mg/m3)  

(ppm)  

(mg/m3)  

Acrylic polymer  

-  

a  

-  

-  

Titanium dioxide  

-  

10b  

-  

-  

Inorganic extender  

-  

10b  

-  

-  

Additives  

-  

a  

-  

-  

Water  

-  

a  

-  

-  

 
a = not listed  

b = as nuisance dust  

c = per ACGIH  

TWA = Time Weighted Average  

STEL= Short term Exposure Limit  

National Occupational Health and Safety Commission ( Australia)
 
 
Respiratory Protection
 

If vapours and mists occur, a respiratory protection program meeting Australian Standards AS- 1716 and AS-1715 requirements must be followed whenever workplace conditions warrant a respirator's use. None required if airborne concentrations are maintained below the exposure limit listed in "Exposure Limit Information"

 
Eye Protection
 

Use chemical splash goggles (Australian Standard AS-1337) or approved equivalent. Eye protection worn must be compatible with respiratory protection system employed. An eye wash station and safety shower should be available in the work area.  

 
Hand Protection
 

Impermeable gloves as necessary to prevent skin contact. E.g. Nitrile or neoprene gloves.  

 
Protective Clothing
 

Clothing made of the following material has excellent resistance: Tyvec, butyl Nitrile rubber or neoprene.  

 
Engineering Controls (Ventilation)  

Use local exhaust ventilation sufficient to maintain exposure levels below exposure limit concentrations. Refer to Australian Standard AS-1668.  

 

9. PHYSICAL AND CHEMICAL PROPERTIES  

 

Appearance and colour: White (un-tinted) , Clear

State: Viscous Liquid  

Odour Characteristic: Mild Acrylic  

pH: 7-9  

Specific Gravity (Water = 1): 1.26 (AC Clear 1.03)  

 

Vapour Density (Air = 1): Greater than air  

Vapour Pressure: No data available  

Melting Point: ~0 oC  

Boiling Point: ~100 oC  

Solubility in Water: Dispersible.  

Flash Point: Not Applicable  

 

10. STABILITY AND REACTIVITY  

 

Considered stable under normal conditions of use and handling.  

Hazardous decomposition products: Thermal decomposition may produce acrylic monomers, carbon monoxide, carbon dioxide and oxide of nitrogen.  

 

11. TOXICOLOGICAL INFORMATION  

 

Acute Data  

No data available for the product.  

 

12. ECOLOGICAL INFORMATION  

 

No available data.  

 

13. DISPOSAL CONSIDERATIONS  

 

Do not reuse empty drums or containers unless professionally cleaned. Dispose of waste and empty containers in accordance with federal, state and local laws.  

 

14. TRANSPORT INFORMATION  

 

Not classified as Dangerous Goods according to the Australian Code for the Transport of Dangerous Goods by Road and Rail (Sixth Edition). See section 1.  

 

15. REGULATORY INFORMATION  

 

No Available data.  

 

16. OTHER INFORMATION     

NOHSC: National Occupational Health and Safety Commission - Australia  

ADG: Australian Code For The Transport Of Dangerous Goods By Road And Rail (Sixth Edition).

 

 

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