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Sika Sikalastic 612 Elastomeric Polyurethane Sealant 21.3kg White
Insulating & Sealing Materials

Sika Sikalastic 612 Elastomeric Polyurethane Sealant 21.3kg White

The Sika Sikalastic 612 elastomeric waterproofing coating forms a polyurethane membrane for waterproofing roof terraces and flat roofs. It is applied cold and cures with moisture, forming a seamless...

The Sika Sikalastic 612 elastomeric waterproofing coating forms a polyurethane membrane for waterproofing roof terraces and flat roofs. It is applied cold and cures with moisture, forming a seamless membrane without joints or gaps that remains flexible even at low temperatures. The membrane is resistant to UV radiation, weathering and ponding water, while...

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Top specs

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  • Quantity 21.3 kg
  • Application Surface Wall, Terrace
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Reviews (13)

Reviews

4.3
13
4.3
Review this product
  1. 11
  2. 4 stars
    0
  3. 3 stars
    0
  4. 2 stars
    0
  5. 2
Review this product
  • Does it dry quickly?
  • Does it spread easily?
  • Value for money

What do users say? AI-generated summary

Users generally rate the product positively, especially praising its durability and flexibility, as well as its good coverage and fit. It is described as suitable for waterproofing surfaces and easy to use when the preparation and application instructions are followed correctly. However, some users report peeling or wear and water seepage, suggesting that proper application has a significant impact on the results.

Reviews photos

Reviews photos
Reviews photos
Reviews photos
Reviews photos

Reviews by our members

  • spudoulis
    5
    14 out of 15 members found this review helpful
    spudoulis

    The best in its category... I am a professional and have been using it for many years with absolute success... What this specific material needs is a very good primer from the same company and enough material, and in more difficult cases we use a membrane... I haven't heard a single complaint from any customer in all these years of using it!!! I highly recommend it without hesitation!!!

    Translated from Greek ·
    Did you find this review helpful?
  • g_papadopoulos1958
    5
    6 out of 6 members found this review helpful
    g_papadopoulos1958

    Very powerful product, very easy to apply if you have some experience with applications in general. Ideal combination with the use of Sikalastic 570 varnish to prevent wear over time.

    Translated from Greek ·
    Did you find this review helpful?
  • Ni_kos
    1
    12 out of 37 members found this review helpful
    Ni_kos

    I used the product about 3.5 years ago, first applying the primer of the same brand as the seller told me (if you apply it without the primer, leave it as it is...). Then I applied it with two coats in a cross pattern, but as you can see in the photos, the result was not as expected. 30% disappeared. The product has a 10-year warranty, but I didn't contact the provider or the company because they would tell me that I wasn't a specialized technician and they are not responsible. I paid around 1000€ for 240 square meters. I cannot upload photos...

    Translated from Greek ·
    Did you find this review helpful?
  • Elias_Gkourtzalis
    5
    9 out of 11 members found this review helpful
    Elias_Gkourtzalis

    Perhaps the best among the applied polyurethane materials!
    With poor preparation and application by non-specialists, there will definitely be problems.

    Translated from Greek ·
    Did you find this review helpful?
  • yolo69
    5
    29 out of 30 members found this review helpful
    yolo69

    Excellent product in elasticity and durability over time. It requires approximately 1.5 kilograms per square meter for two hands to achieve proper results. It adheres incredibly well to clean cement, which means it does not require primer. It does not run on vertical surfaces like other polyurethanes. And something else very important is that it did not suffer any damage in heavy rain just half an hour after application. If it were another product, it would have washed away completely. Tremendous material, I wonder about the previous review, perhaps something was not followed correctly in its application

    Translated from Greek ·
    Did you find this review helpful?
  • athch1
    1
    10 out of 44 members found this review helpful
    athch1

    The material after a year and a half faded completely, resulting in water leaking into my house. I contacted the company and they replied that it was the technician's fault and not the material. They treated me in an unacceptable manner. It is not worth the money. There are other reputable companies

    Translated from Greek ·
    Did you find this review helpful?
  • 5
    marios.mi

    Superior to many others in its category. Coverage with fewer layers and durability

    Translated from Greek ·
    Did you find this review helpful?
  • 5
    Mixalhs_B5284

    Verified purchase

    very good quality and quite good fit

    Translated from Greek ·
    • Does it dry quickly?
    • Does it spread easily?
    • Value for money
    Did you find this review helpful?
  • 5
    Mixalhs_B5284

    Verified purchase

    This review is about the quantity: 1 kg

    very good quality

    Translated from Greek ·
    • Does it dry quickly?
    • Does it spread easily?
    • Value for money
    Did you find this review helpful?
  • 5
    1 out of 1 members found this review helpful
    marofos

    Verified purchase

    This review is about the quantity: 1 kg

    Amazing product especially for surface insulation with moisture before painting.

    Translated from Greek ·
    Did you find this review helpful?
  • 5
    1 out of 1 members found this review helpful
    ROFOS1

    Verified purchase

    This review is about the quantity: 1 kg

    Very good product. Easy to use. Good application.

    Translated from Greek ·
    Did you find this review helpful?
  • 5
    Pkarvounis@

    Verified purchase

  • 5
    Nassos_Tsouk

    Verified purchase

    This review is about the quantity: 1 kg

    • Does it dry quickly?
    • Does it spread easily?
    • Value for money
  • spudoulis
    5
    spudoulis

    The best in its category... I am a professional and have been using it for many years with absolute success... What this specific material needs is a very good primer from the same company and enough material, and in more difficult cases we use a membrane... I haven't heard a single complaint from any customer in all these years of using it!!! I highly recommend it without hesitation!!!

    Translated from Greek ·
    14
  • g_papadopoulos1958
    5
    g_papadopoulos1958

    Very powerful product, very easy to apply if you have some experience with applications in general. Ideal combination with the use of Sikalastic 570 varnish to prevent wear over time.

    Translated from Greek ·
    6
  • Ni_kos
    1
    Ni_kos

    I used the product about 3.5 years ago, first applying the primer of the same brand as the seller told me (if you apply it without the primer, leave it as it is...). Then I applied it with two coats in a cross pattern, but as you can see in the photos, the result was not as expected. 30% disappeared. The product has a 10-year warranty, but I didn't contact the provider or the company because they would tell me that I wasn't a specialized technician and they are not responsible. I paid around 1000€ for 240 square meters. I cannot upload photos...

    Translated from Greek ·
    12
  • Elias_Gkourtzalis
    5
    Elias_Gkourtzalis

    Perhaps the best among the applied polyurethane materials!
    With poor preparation and application by non-specialists, there will definitely be problems.

    Translated from Greek ·
    9
  • yolo69
    5
    yolo69

    Excellent product in elasticity and durability over time. It requires approximately 1.5 kilograms per square meter for two hands to achieve proper results. It adheres incredibly well to clean cement, which means it does not require primer. It does not run on vertical surfaces like other polyurethanes. And something else very important is that it did not suffer any damage in heavy rain just half an hour after application. If it were another product, it would have washed away completely. Tremendous material, I wonder about the previous review, perhaps something was not followed correctly in its application

    Translated from Greek ·
    29
  • See all
Product report

Description & Specifications

The Sika Sikalastic 612 elastomeric waterproofing coating forms a polyurethane membrane for waterproofing roof terraces and flat roofs. It is applied cold and cures with moisture, forming a seamless membrane without joints or gaps that remains flexible even at low temperatures. The membrane is resistant to UV radiation, weathering and ponding water, while allowing water vapour to escape.

It can be applied to walls and roof terraces, on substrates such as bituminous membranes, brick, metal, ceramic and cement-based surfaces. It can be used as a final coating or beneath tiles in outdoor areas, and reinforcement with glass fibre mesh is optional. Apply in two coats.

  • Quantity: 21.3 kg
  • Colour: White
  • Type: One-component elastomeric polyurethane waterproofing coating
  • Form: Brush- or roller-applied liquid
  • Application method: Cold-applied
  • Application surfaces: Walls, roof terraces and flat roofs
  • Suitable substrates: Bituminous membranes, brick, metal, ceramic and cement-based surfaces
  • Pot life: 1 hour
  • Waiting time before overcoating: 4–18 hours, depending on environmental conditions
  • Application temperature: 5–40 °C
  • Service temperature: −20–80 °C
  • Relative humidity: 5–85%
  • Density: Approximately 1.42 kg/l at 23 °C
  • Solids by weight: Approximately 80% at 23 °C and 50% relative humidity
  • Solids by volume: Approximately 68% at 23 °C and 50% relative humidity
  • Consumption: 0.7–2.0 l/m² or 1.0–2.8 kg/m²
  • Dry film thickness: 0.7–1.4 mm
  • Tensile strength with reinforcement: Approximately 8 N/mm²
  • Tensile strength without reinforcement: Approximately 4.5 N/mm²
  • Certifications and standards: ETAG 005, ETA 12/01278, DIN EN 14891:2012-07, ENV 1187: Broof (t1), EN 13501-1: Euroclass E, CE marking

Manufacturer

Manufacturer Details

Warnings & Safety Information

Product Details

Type
Lubricating Liquid
Colour
White
Application Surface
Wall, Terrace
Application Surface Material
Bituminous Membrane, Brick, Metallic, Ceramic, Cementitious

Additional Specifications

Polyurethane
Yes
Elastomer
Yes
Acrylic
No
Bituminous
No
Cementitious
No
2-Component
No

Packaging

Quantity
21.3 kg

Popular Series

Product Series
Sikalastic (Sika)

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

Reviews (13)

4.3
13
4.3
Review this product
  1. 11
  2. 4 stars
    0
  3. 3 stars
    0
  4. 2 stars
    0
  5. 2
Review this product
  • Does it dry quickly?
  • Does it spread easily?
  • Value for money

What do users say? AI-generated summary

Users generally rate the product positively, especially praising its durability and flexibility, as well as its good coverage and fit. It is described as suitable for waterproofing surfaces and easy to use when the preparation and application instructions are followed correctly. However, some users report peeling or wear and water seepage, suggesting that proper application has a significant impact on the results.

Reviews photos

Reviews photos
Reviews photos
Reviews photos
Reviews photos

Reviews by our members

  • spudoulis
    5
    14 out of 15 members found this review helpful
    spudoulis

    The best in its category... I am a professional and have been using it for many years with absolute success... What this specific material needs is a very good primer from the same company and enough material, and in more difficult cases we use a membrane... I haven't heard a single complaint from any customer in all these years of using it!!! I highly recommend it without hesitation!!!

    Translated from Greek ·
    Did you find this review helpful?
  • g_papadopoulos1958
    5
    6 out of 6 members found this review helpful
    g_papadopoulos1958

    Very powerful product, very easy to apply if you have some experience with applications in general. Ideal combination with the use of Sikalastic 570 varnish to prevent wear over time.

    Translated from Greek ·
    Did you find this review helpful?
  • Ni_kos
    1
    12 out of 37 members found this review helpful
    Ni_kos

    I used the product about 3.5 years ago, first applying the primer of the same brand as the seller told me (if you apply it without the primer, leave it as it is...). Then I applied it with two coats in a cross pattern, but as you can see in the photos, the result was not as expected. 30% disappeared. The product has a 10-year warranty, but I didn't contact the provider or the company because they would tell me that I wasn't a specialized technician and they are not responsible. I paid around 1000€ for 240 square meters. I cannot upload photos...

    Translated from Greek ·
    Did you find this review helpful?
  • Elias_Gkourtzalis
    5
    9 out of 11 members found this review helpful
    Elias_Gkourtzalis

    Perhaps the best among the applied polyurethane materials!
    With poor preparation and application by non-specialists, there will definitely be problems.

    Translated from Greek ·
    Did you find this review helpful?
  • yolo69
    5
    29 out of 30 members found this review helpful
    yolo69

    Excellent product in elasticity and durability over time. It requires approximately 1.5 kilograms per square meter for two hands to achieve proper results. It adheres incredibly well to clean cement, which means it does not require primer. It does not run on vertical surfaces like other polyurethanes. And something else very important is that it did not suffer any damage in heavy rain just half an hour after application. If it were another product, it would have washed away completely. Tremendous material, I wonder about the previous review, perhaps something was not followed correctly in its application

    Translated from Greek ·
    Did you find this review helpful?
  • athch1
    1
    10 out of 44 members found this review helpful
    athch1

    The material after a year and a half faded completely, resulting in water leaking into my house. I contacted the company and they replied that it was the technician's fault and not the material. They treated me in an unacceptable manner. It is not worth the money. There are other reputable companies

    Translated from Greek ·
    Did you find this review helpful?
  • 5
    marios.mi

    Superior to many others in its category. Coverage with fewer layers and durability

    Translated from Greek ·
    Did you find this review helpful?
  • 5
    Mixalhs_B5284

    Verified purchase

    very good quality and quite good fit

    Translated from Greek ·
    • Does it dry quickly?
    • Does it spread easily?
    • Value for money
    Did you find this review helpful?
  • 5
    Mixalhs_B5284

    Verified purchase

    This review is about the quantity: 1 kg

    very good quality

    Translated from Greek ·
    • Does it dry quickly?
    • Does it spread easily?
    • Value for money
    Did you find this review helpful?
  • 5
    1 out of 1 members found this review helpful
    marofos

    Verified purchase

    This review is about the quantity: 1 kg

    Amazing product especially for surface insulation with moisture before painting.

    Translated from Greek ·
    Did you find this review helpful?
  • 5
    1 out of 1 members found this review helpful
    ROFOS1

    Verified purchase

    This review is about the quantity: 1 kg

    Very good product. Easy to use. Good application.

    Translated from Greek ·
    Did you find this review helpful?
  • 5
    Pkarvounis@

    Verified purchase

  • 5
    Nassos_Tsouk

    Verified purchase

    This review is about the quantity: 1 kg

    • Does it dry quickly?
    • Does it spread easily?
    • Value for money
  • spudoulis
    5
    spudoulis

    The best in its category... I am a professional and have been using it for many years with absolute success... What this specific material needs is a very good primer from the same company and enough material, and in more difficult cases we use a membrane... I haven't heard a single complaint from any customer in all these years of using it!!! I highly recommend it without hesitation!!!

    Translated from Greek ·
    14
  • g_papadopoulos1958
    5
    g_papadopoulos1958

    Very powerful product, very easy to apply if you have some experience with applications in general. Ideal combination with the use of Sikalastic 570 varnish to prevent wear over time.

    Translated from Greek ·
    6
  • Ni_kos
    1
    Ni_kos

    I used the product about 3.5 years ago, first applying the primer of the same brand as the seller told me (if you apply it without the primer, leave it as it is...). Then I applied it with two coats in a cross pattern, but as you can see in the photos, the result was not as expected. 30% disappeared. The product has a 10-year warranty, but I didn't contact the provider or the company because they would tell me that I wasn't a specialized technician and they are not responsible. I paid around 1000€ for 240 square meters. I cannot upload photos...

    Translated from Greek ·
    12
  • Elias_Gkourtzalis
    5
    Elias_Gkourtzalis

    Perhaps the best among the applied polyurethane materials!
    With poor preparation and application by non-specialists, there will definitely be problems.

    Translated from Greek ·
    9
  • yolo69
    5
    yolo69

    Excellent product in elasticity and durability over time. It requires approximately 1.5 kilograms per square meter for two hands to achieve proper results. It adheres incredibly well to clean cement, which means it does not require primer. It does not run on vertical surfaces like other polyurethanes. And something else very important is that it did not suffer any damage in heavy rain just half an hour after application. If it were another product, it would have washed away completely. Tremendous material, I wonder about the previous review, perhaps something was not followed correctly in its application

    Translated from Greek ·
    29
  • See all