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Sikalastic®-614

One-component, liquid applied polyurethane waterproofing membrane

Sikalastic®-614 is a one-component, cold applied, moisture-triggered polyurethane membrane. It cures to form a seamless and durable waterproofing solution for exposed roof areas and structures. Suitable for hot and tropical climatic conditions.

  • Single component - no mixing, easy and ready to use
  • Cold applied - requires no heat or flame
  • Seamless membrane
  • Compatible with Sika® Reemat Premium - easy to detail
  • Easily recoated when needed - no stripping required
  • Economic - provides a cost efficient life cycle extension of failing roofs
  • Vapour permeable - allows substrate to breathe
  • Elastic - retains flexibility even at low temperatures
  • Good adhesion to most substrates - see table
  • Fast Curing - free from rain damage almost immediately on application
Sikalastic®-614
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Usage

  • For roof waterproofing solutions in both new construction and refurbishment projects
  • For roofs displaying complex detail areas, even when accessibility is limited
  • For cost efficient life cycle extension of failing roofs
  • For waterproofing underneath tiles bonded with adhesives on balconies and terraces
 

Advantages

  • Single component - no mixing, easy and ready to use
  • Cold applied - requires no heat or flame
  • Seamless membrane
  • Compatible with Sika® Reemat Premium - easy to detail
  • Easily recoated when needed - no stripping required
  • Economic - provides a cost efficient life cycle extension of failing roofs
  • Vapour permeable - allows substrate to breathe
  • Elastic - retains flexibility even at low temperatures
  • Good adhesion to most substrates - see table
  • Fast Curing - free from rain damage almost immediately on application

Packaging

15 L (~20.7 kg) metal pail

5 L (~7.1 kg) metail pail

Colour

White (RAL 9010), grey (RAL 7045), green (RAL 7009), other colours available upon request

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

  • Liquid applied roof waterproofing kit according to ETAG 005, ETA 13 / 0456 issued by Technical Assessment Body British Board of Agrément (BBA), Declaration of Performance 66458974, and provided with the CE marking.
  • Liquid-applied water impermeable product for external installations beneath ceramic tiling according to DIN EN 14891 : 2012 - 07, Declaration of Performance 41363963, assessed by notified laboratory 0761, and provided with the CE marking.
  • External fire performance according to ENV 1187: BRoof (t1) / Broof (t4)
  • Reaction to fire according to EN13501 - 1 :
    Euroclass E
Product Information

Composition

One-component, moisture-triggered aromatic polyurethane

Shelf life

9 months from date of production

Storage conditions

The product must be stored properly in original, unopened and undamaged sealed packaging in dry conditions at temperatures between 0 °C and +25 °C.
Higher storage temperatures may reduce shelf life of product.
Reference shall also be made to the storage recommendations within the safety data sheet.

Density

~1.45 kg/l (23 °C)

(EN ISO 2811-1)

Solid content by weight

~79 % (+23 °C / 50 % r.h.)

Solid content by volume

~68 % (+23 °C / 50 % r.h.)
System information

System Structure

Roof Coating*
Sikalastic®-614 is applied in 1 or 2 coats 

Total consumption

 ≥ 1.0 l/m2 (≥ 1.45 kg/m2)

Dry film thickness

 ≥ 0.85 mm

*For partial reinforcement Sikalastic® Fleece-120 or Sikalastic® Flexitape Heavy is applied at areas with high movement, irregular substrate or to bridge cracks, joints and seams on the substrate as well as for details. On bitumen felt a fully reinforced roof waterproofing system has to be applied.
For primer, please refer to the Substrate Pre-Treatment table below.

 

Reinforced Roof Waterproofing
Sikalastic®-614 is applied in one coat reinforced with Sika® Reemat Premium and sealed with a further coat of Sikalastic®-614

Layer

Product

Consumption

1. Primer

Please refer to substrate pre-treatment

Please refer to PDS of the Primer

2. Base coat

Sikalastic®-614

≥ 1.0 l/m2
(≥ 1.45 kg/m2)

3. Reinforcement

Sika® Reemat Premium

-

4. Top coatSikalastic®-614≥ 0.75 l/m2
(≥ 1.09 kg/m2)

Waterproofing below tiles bonded with tile adhesive
Sikalastic®-614 is applied on concrete or screed in one coat reinforced with Sika® Reemat Premium, sealed with a further coat of Sikalastic®-614, followed with one more coat Sikalastic®-614 broadcasted with quartz sand.

Layer

Product

Consumption

Primer

Sika® Concrete Primer or
Sika® BondingPrimer

Please refer to PDS of
the Primer

Base coat

Sikalastic®-614

≥ 1.0 l/m2
(≥ 1.45 kg/m2)

Reinforcement

Sika® Reemat Premium

-

Top coatSikalastic®-614≥  0.75 l/m2
(≥ 1.09 kg/m2)
Bonding bridgeSikalastic®-614 broadcasted with 2 kg/m2 quartz sand (ø 0.4 - 0.7 mm)≥  0.2 l/m2
(≥ 0.29 kg/m2)
Tile adhesiveRefer to Sika Technical reportPlease refer to PDS of
the tile adhesive

 Note: These figures are theoretical and do not include for any additional material required due to surface porosity, surface profile, variations in level and wastage.
Technical Information

Tensile Strength

Not Reinforced

Reinforced

~4.5 N/mm2

~14 N/mm2

Tensile Resistance

550 N, reinforced

Service Temperature

-20 °C min. / +80 °C max.

 

Application

Application Information

Ambient Air Temperature

+5 °C min. / +40 °C max.

Relative Air Humidity

5 % r.h. min. / 85 % r.h. max.

Substrate Temperature

+5 °C min. / +60 °C max.

Min. 3 °C above dew point

Substrate Moisture Content

≤ 4 % pbw moisture content.

Test method: Sika®-Tramex meter
No rising moisture according to ASTM (Polyethylene-sheet)

Substrate Pre-Treatment

Substrate

Primer

Cementitious substrates

Sika® Concrete Primer

Brick and Stone

Sika® Bonding Primer or Concrete Primer where necessary on porous or dusting substrates.

Ceramic tiles (unglazed), and concrete slapsSika® Concrete Primer
Bituminous feltOnly required for high reflectivity applications (Sikalastic® Metal Primer). Fully reinforced system only.
Bituminous coatingsOnly required for high reflectivity applications (Sikalastic® Metal Primer). Fully reinforced system only.
Metals
Ferrous or galvanised metals,lead, copper, aluminium, brass or stainless steel		Sikalastic® Metal Primer
Wooden substratesTimber based roof decks require a complete layer of Sikalastic® Carrier. For small exposed timber sections use Sika® Concrete Primer or Sika Bonding Primer.
PaintsSubject to adhesion and compatibility tests
Existing SikaRoof® MTC SystemSika® Reactivation Primer

For the consumption rates and waiting time / overcoating please refer to the Product Data Sheet of the appropriate cleaner and primer. Other substrates must be tested for their compatibility. If in doubt, apply a test area first.

Pot Life

Sikalastic®-614 is designed for fast curing. High temperatures combined with high air humidity will accelerate the curing process. Thus, material in opened containers should be applied immediately. In opened containers, the material will form a film after 1 hour approximately. (+20 °C / 50 % r.h.)

Waiting Time / Overcoating

Minimum waiting time*

Ambient conditions

18 h

+5 °C / 50 % r.h.
8 h+10 °C / 50 % r.h.
6 h+20 °C / 50 % r.h.

4 h

+30 °C / 50 % r.h.

*After four days the surface must be cleaned and primed with Sika® Reactivation Primer before continuing.


Note: Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.

Applied Product Ready for Use

Rain resistant*

Touch dry

Full cure

Ambient conditions

10 min

8 h

16 h

+5 °C / 50 % r.h.

10 min

6 h

10 h

+10 °C / 50 % r.h.

10 min

4 h

7 h

+20 °C / 50 % r.h.

10 min

2 h5 h+30 °C / 50 % r.h.

*Be aware that impact of heavy rain or rain showers can physically damage the still liquid membrane.
 

Note: Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.
Application steps

MIXING

Mixing is not required, however if the product is settled or separated on opening, stir Sikalastic®-614 gently but thoroughly in order to achieve a uniform colour. Stirring gently will minimise air entrainment.

APPLICATION

Prior the application of Sikalastic®-614 the priming coat if used must have cured tack-free. For the Waiting Time / Overcoating please refer to the Product Data Sheet of the appropriate primer. Damageable areas (handrails, etc) have to be protected with tape or plastic wrapping.

 

Roof Coating:
Sikalastic®-614 is applied in two coats. Prior to the application of a 2nd coat the indicated waiting time in the table Waiting Time / Overcoating shall be allowed.
Roof coatings may need partial reinforcement over areas of stress or predictable movement for example joints overlaps detailing etc. Use Strips or sections of Sika® Reemat Premium for reasonably sound surfaces for example, asbestos cement etc. For joints with moderate movement, example Metal Sheeting use Sika® Flexitape Heavy incorporating bond-break.

 

Reinforced Roof Waterproofing:
Sikalastic®-614 is applied in combination with Sika® Reemat Premium.

  1. Apply first coat of approximately 1 l/m2 of Sikalastic®-614. Work only so far in advance that the material stays liquid.
  2. Roll in the Sikalastic® Reemat Premium. Overlap it a minimum 5 cm and ensure overlaps are sufficiently wet to bond both layers.
  3. Overroll the treated area until the Sikalastic® Reemat Premium is completely embedded in the Base coat. The roller may require only a little extra material to keep wetted but no further significant material needs to be added at this stage.
  4. After the coat is dry enough to walk on, seal the roof area with second coat of Sikalastic®-614 at a minimum 1 l/m2 per coat.

 

Please note, always begin with details prior starting with waterproofing the horizontal surface. For details follow step 1-4.

 

Waterproofing below tiles:
For waterproofing below tiles, follow the instruction for reinforced roof waterproofing system. After the last coat of the waterproofing system has been cured, apply another coat of Sikalastic®-614 broadcasted with quartz sand (ø 0.4 -0.7 mm) as bonding bridge. Remove excessive sand after the liquid applied membrane has been cured. For application of the tile adhesive, please refer to the product data sheet of the tile adhesive.

CLEANING OF EQUIPMENT

Clean all tools and application equipment with Thinner C immediately after use. Hardened and/or cured material can only be removed mechanically.

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