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UV Protection Coating:  

DUROPROOF TTC is a technologically superior, high performance, single pack liquid polyurethane which cures to form an extremely tough and permanently flexible waterproof membrane with outstanding resistance to UV, weathering and wear. It is used as a top coat over other Duroproof PU membranes to provide a system with extreme levels of performance.

 

PRINCIPLE CHARACTERISTICS

Single component, easy to spread and sprayable, forming a seamless membrane

Trafficable, with extremely high tensile and tear strengths, and abrasion resistance

High gloss, very low dirt pickup and extremely easy to clean

Full outdoor exposure with outstanding weathering performance.

Fast dry and tack free time.

Resistance to oils & automotive fluids.

Tough and elastomeric.

 

USE AREAS

Protective top coating of Duroproof PU basecoats such as DUROPROOF PPM for reinforced concrete roofs and decks, external balconies, plazas & podium levels to boost weatherability, UV protection, trafficability and ease of cleaning.

Pedestrian traffic installations

Work areas, mechanical and equipment rooms.

 

TECHNICAL DATA

Appearance (dry film)

Grey, glossy, (other colours on request ).

Tack-free Time

3-4 hours at 25C & 50% R.H. , 0.15 mm film

Cure

Apply second coat after 16 hours but no longer than 48 hours.

Light foot traffic after 24 hours

Leave at least 3 days for heavy traffic

Weather Resistance

2000 hours QUV, no crazing, spalling or softening

Solids Content

80%

Tensile Strength Max

13.0 MPa, ASTM D-412

Elongation at break

150%, ASTM D-412

Tear Strength

36 N/cm, ASTM D-1004

Hardness

87 Shore A

Abrasion Resistance

No weight loss, 1000 cycles, 1000 gm, CS-17, ASTM D4060

Chemical Resistance

No visible effect, 16 hrs, 40C: 20% detergent, auto coolant,

kerosene, motor oil, caustic solution (pH 13.5)

   

Recommended Wet Film Thickness :

 

UV protection : Total 0.25mm (4.0 sq.m./L) to 0.3mm (3.3 sq.m./L)

Pedestrian traffic: Total 0.4mm (2.5 sq.m./L) to 0.50mm (2.0 sq. m./L) .

Heavy traffic: Minimum 0.66 mm (1.5 sq. m./L). All applied as 2-3 coats.

 

Minimum Dry Film Thickness :

Total 0.2mm for weather protection, 0.3mm for pedestrian, and 0.5mm for heavy

traffic areas.

Clean up : Xylene

Shelf life : 6 months unopened, stored inverted, undercover & below 250C, 50% R.H.

 

Preparation

DUROPROOF TTC is primarily used as a protective topcoat over DUROPROOF PPM & other approved Duroproof PU basecoats. The surface must be thoroughly dry, clean, free of dirt, dust, loose particles, oil and contaminates.  

 

PRIMING

Apply DUROPROOF PPM & other approved Duroproof PU basecoats according to their respective technical datasheets. Allow a minimum of 16 hours before over-coating with DUROPROOF TTC but do not delay more than 48 hours.  

 

APPLICATION

For exposed areas, do not begin application if rain is anticipated in the next 16 hours. Where dew is ex-pected overnight, it is best not to apply in the early morning or late afternoon. For weather protection and occasional foot traffic: To the basecoat surface, apply DUROPROOF TTC by notched squeegee, brush, roller or airless spray in two coats or more. If rolling, use only a 5 to 6 mm nap roller cover that is free of loose fibre. For airless spray equipment, use a minimum 30:1 ratio pump. Further coats must be applied within a maximum of 24 hours to achieve the best inter-coat adhesion. When dry, check for pinholes or misses and rectify if necessary. If the membrane becomes dirty between coats, clean with Xylene or preferably MEK solvent to ensure adhesion.

 

NON SLIP FINISH

 

Apply grit: Washed dry sand, 0.6mm (600 micron) average particle size, thoroughly dried, or for greater friction use aluminium oxide or silicon carbide 0.7mm (700 micron).

1. For pedestrian areas: Spread evenly 0.25 to 0.5 kg/sq. m. of grit onto a wet film of DUROPROOF TTC of 0.25mm (250 micron) wet film thickness (4.0 sq. m./L). Allow to dry overnight and apply a second coat at the same coverage. Alternately, mix 3 kg of dry sand as specified above into one 10kg pail of TTC. Mix at low speed. Do not mix in air.  
 
2. For high traffic areas, such as traffic aisles: Before applying DUROPROOF TTC check that the basecoat in these areas has been applied at 0.7 to 0.8mm (700-800 micron) dry film thickness. Spread grit evenly onto a wet film of DUROPROOF PU TTC until refusal (completely covered in grit), i.e. about 2.5kg per sq.m. The required wet film thickness before spreading the grit is 0.33mm (330micron), i.e. about 3.0 sq. m./L. Leave overnight to cure, then vacuum or carefully sweep off all loose grit. A final coat is applied over the grit by spray or roller at a coverage rate of 3.0 sq. m./L. Ensure that the DUROPROOF TTC has penetrated the grit and spread it evenly by back rolling where necessary. Note that it may be necessary to add some sand into the final coat, in which case add the same as for pedestrian areas (see note 1above).
 
3. For areas of exceptional traffic and very high wear such as ramps, turning areas, entrances & exits, increase the thickness of DUROPROOF TTC by 50% before spreading with grit. The overall coverage (all coats) will be 1.2 sq. m./L minimum (0.83 L/sq. m.). This is best achieved by applying as two coats, a thin first coat at 6.0 sq. m./L, allowing this to dry, and then applying another thicker coat at 3.0 sq. m./L. The grit is then broadcast into this wet coat in the same way as for high traffic areas. Leave overnight to cure, then vacuum or carefully sweep off all loose grit. A final coat of DUROPROOF TTC is applied over the grit by spray or roller at a coverage rate of 3.0 sq. m./L. Ensure that the DUROPROOF TTC has penetrated the grit and spread it evenly by back rolling where necessary. Note that it may be necessary to add some sand into the final coat, in which case add the same as for pedestrian areas (see note 1above).

Typically, allow to cure a minimum of 16 hours before any traffic. Conditions below 25 C & 50% R.H. will extend the time before any traffic is allowable. Wait at least 72 hours (3 full days) before allowing any vehicle traffic, and longer the more severe the expected traffic conditions, e.g. ramps and turning areas.

For more aggressive non-slip finishes use sand graded at 500-1000 micron at 3 to 4 kg per 11 kg pail of DUROPROOF PU TTC, either broadcast or mixed.  

 

CLEANING

Tools & spray equipment should be cleaned as soon as possible after use with xylene solvent. Read the MSDS before use. Note that once DUROPROOF TTC has set to a solid it will not re-dissolve.

 

MAINTENANCE

Duroproof TTC can be repaired by first cleaning the surface thoroughly with MEK or acetone solvent and applying the coating system however consult Durotech for advice beforehand.

 

PRECAUTIONS

Do not direct-stick tiles to the membrane. Do not apply above 30 C or below 10 C ambient temperature. For exposed areas, do not begin application if rain is anticipated in the next 16 hours. Where dew is expected overnight, it is best not to apply in the early morning or late afternoon. Do not cover until fully dry. Protect the membrane system against damage before installation is completed.

Reseal all partly used product containers as soon as there is any significant delay in application. This re-sealed product must used within 1 or 2 days. Note that the product cures by reaction with moisture in the air, therefore container seals need to be air tight.

 

WARNINGS AND HAZARDS:

Keep away from heat and flame. Use only with adequate ventilation. Refer to the MSDS prior to use

 

HANDLING AND STORAGE:

DUROPROOF TTC can be stored for 6 months provided containers are stored under cover at below 25 C & 50% RH. Avoid prolonged exposure to humidity or high temperature. Avoid contamination with water or alcohols. The product is very sensitive to moisture. Once opened, containers should NOT be re-sealed for future use beyond one or two days.   
  

 

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