HYPERDESMO-T Transparent, fully aliphatic, polyurethane liquid membrane for waterproofing & protection

CHARACTERISTICS:

HYPERDESMO-T is a one component high solids, polyurethane fluid, which cures with the humidity in the atmosphere. It produces an elastic, highly durable, highly hydrophobic membrane with excellent UV resistance. Being aliphatic, it does not yellow/discolor when exposed to sunlight.

It is based on pure elastomeric, hydrophobic, aliphatic polyurethane resin, which results in excellent mechanical, chemical, thermal, UV and natural element resistance properties.

Apply with roller in one or two coats. Minimum total consumption: 0.2-1.0 kg/m2.

Although HYPERDESMO-T looks colored, especially when it is in large containers, it is stressed that the end result is, indeed, transparent.

Waterproofing and protection of:

  • Tiles
  • natural stone
  • wood
  • verandas and balconies
  • terraces
  • Also suitable for sealing concrete (Applied in thick, bubble-free, coats)

LIMITATIONS:

  • Not recommended for unsound substrates,
  • Non-porous substrates, such as ceramic tiles must be primed with PRIMER-T first.

FEATURES & BENEFITS

  • No thinning is required but SOLVENT-01 may be used
  • Excellent weather and UV resistance
  • Excellent thermal resistance, the product never turns soft. Max service temperature 80 oC, max shock temperature 200 oC
  • Resistance to cold: The film remains elastic even down to -40 oC
  • Excellent mechanical properties
  • Good chemical resistance
  • Water vapor transmission
  • can also be applied in thick, bubble-free, coats

APPLICATION PREREQUISITES

Can be successfully applied on:

Tiles, concrete, cement roof tiles, wood, corroded metal, galvanized steel. For information about other substrates, please contact our tech department.

Concrete substrate conditions (standard):

  • Hardness: R28 = 15 Mpa
  • Humidity: W < 10%
  • Temperature: 5-35 oC
  • Relative humidity: < 85%

Primer selection for special conditions and substrates: Please refer to the Primer Selection Table.

APPLICATION PROCEDURE

Clean the surface using a high pressure washer, if possible. Remove oil, grease and wax contaminants. If used for concrete sealing, cement laitance, loose particles, mould release agents, cured membranes must also be removed. Fill surface irregularities with the necessary product.

Priming:

Priming is required when application is on non-porous substrates, such as ceramic tiles and marble. In this case, PRIMER-T is used. It is applied with a clean cloth without leaving any pools of fluid (apply as if wiping the surface).

Mixing:

Stir well, manually or with a low speed mixer. No thinning is required but SOLVENT-01 may be used.

Application:

HYPERDESMO-T is applied as soon as the primer dries (after 15-20 minutes) with roller in one or two coats. Do not leave more than 24 hours between coats.

CONSUMPTION

Minimum total consumption: 0.2-1.0 kg/m2.

CLEANING

Clean tools and equipment first with paper towels and then using SOLVENT-01. Rollers will not be re-usable.

PACKAGING

1 kg, 5 kg, 20 kg and 200 kg drums.

SHELF LIFE

Can be kept for 12 months minimum in the original unopened pails in dry places and at temperatures of 5-25 oC. Once opened, use as soon as possible.

SAFETY INFORMATION

Contains volatile flammable solvents. Apply in well-ventilated, no smoking areas, away from naked flames. In closed spaces use ventilators and carbon active masks. Keep in mind that solvents are heavier than air so they creep on the floor. The MSDS (Material Safety Data Sheet) is available on request.

TECHNICAL SPECIFICATIONS

In liquid form (before application): 80% dry matter in Xylol.

PROPERTY UNITS METHOD SPECIFICATION
Viscosity (Brookfield) cP ASTM D2196-86, @ 25 oC 1,000
Specific weight gr/cm3 ASTM D1475 / DIN 53217 / ISO 2811,

@ 20 oC

1.0
Solids % internal 80-85
Flash point oC ASTM D93, closed cup 42
Tack free time, @ 77 oF (25

oC) & 55% RH

hours 6
Recoat time hours 6-24

 

In cured form (after application):

PROPERTY UNITS METHOD SPECIFICATION
Service temperature oC -40 to 80
Max. temperature short time (shock) oC 200
Hardness Shore D ASTM D2240 / DIN 53505 / ISO R868 40
Tensile strength at break @ 23 oC Kg/cm2 (N/mm2) ASTM D412 / EN-ISO-527-3 350

(35)

Percent elongation @ 23 oC % ASTM D412 / EN-ISO-527-3 > 350
Water vapor transmission gr/m2.hr ASTM E96 (Water Method) 0.8
QUV Accelerated Weathering Test (4hr UV, @ 60 oC (UVB- Lamps) & 4hr COND @ 50

oC)

 

 

 

 

ASTM G53

 

passed (3,000 hours)

Thermal resistance (100 days @ 80 °C) EOTA TR011 passed

 

Chemical (hydrolysis) resistance:

Potassium Hydroxide, 8% 10 days @ 50 oC unaffected
Sodium Hypochlorite, 5% 10 days unaffected
Water absorption < 1.4%

 

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