Injections

How to measure crack width in concrete?

Crack width in concrete can be measured with Sika’s Crack Width Gauge. Other methods such as filler gauge can also be used.

Posted on: 22/09/2021
How to measure crack width in concrete?

Crack width in concrete can be measured with Sika’s Crack Width Gauge. Other methods such as filler gauge can also be used.

Posted on: 22/09/2021
What material do I use for curtain injection?

Elastic and very quick-gelling injection material is normally used in curtain injection and in situations that has high velocity water gushing out from the structure. In this situation a fast setting (within several seconds) 2-component material is required. Normally, a 2-component pump is used to inject the resin.
Sika Injection®-304
For more information, please consult Sika’s Technical Service Department.

Posted on: 22/09/2021
What material do I use for curtain injection?

Elastic and very quick-gelling injection material is normally used in curtain injection and in situations that has high velocity water gushing out from the structure. In this situation a fast setting (within several seconds) 2-component material is required. Normally, a 2-component pump is used to inject the resin.
Sika Injection®-304
For more information, please consult Sika’s Technical Service Department.

Posted on: 22/09/2021
What is curtain injection?

In curtain injection, injection resin is injected into the surrounding soil creating an impermeable gel/soil matrix that prevents water from entering the structure. The resin can be injected from within the structure, or from outside the structure.

For more information, please consult Sika’s Technical Service Department.

Posted on: 22/09/2021
What is curtain injection?

In curtain injection, injection resin is injected into the surrounding soil creating an impermeable gel/soil matrix that prevents water from entering the structure. The resin can be injected from within the structure, or from outside the structure.

For more information, please consult Sika’s Technical Service Department.

Posted on: 22/09/2021
What is the maximum pressure allowed during injection?

A good injection is an injection at low pressure for as long as possible in order to fill all the fine cracks/gaps. Normally, an injection pressure of ~300 psi (~20 bar) or lower should be sufficient in sealing the cracks (for damp and low-pressure flowing water in cracks).

Important Note:
The assumption that higher pressure will result in better sealing of the cracks should be discarded. Therefore, always maintain injection at low pressure for as long as possible.

For more information, please consult Sika’s Technical Service Department.

Posted on: 22/09/2021
What is the maximum pressure allowed during injection?

A good injection is an injection at low pressure for as long as possible in order to fill all the fine cracks/gaps. Normally, an injection pressure of ~300 psi (~20 bar) or lower should be sufficient in sealing the cracks (for damp and low-pressure flowing water in cracks).

Important Note:
The assumption that higher pressure will result in better sealing of the cracks should be discarded. Therefore, always maintain injection at low pressure for as long as possible.

For more information, please consult Sika’s Technical Service Department.

Posted on: 22/09/2021
Can I inject a 2-component product with a single component pump?

Yes, this is normally possible for products with long open-time/pot-life.

For more information, please consult Sika’s Technical Service Department.

Posted on: 22/09/2021
Can I inject a 2-component product with a single component pump?

Yes, this is normally possible for products with long open-time/pot-life.

For more information, please consult Sika’s Technical Service Department.

Posted on: 22/09/2021
How to repair structural concrete cracks?

A 2-component polyurethane structural injection resin can be used to seal structural concrete cracks. Cracks may be dry, damp or wet, but free from standing water.

  • Sika Injection®-216

Alternatively, a 2-component solvent free, low viscosity epoxy injection resin can also be used to seal structural concrete cracks.

  • Sikadur®-52 MY
  • Sikadur®-52 LV MY

For more information, please consult Sika’s Technical Service Department.

Posted on: 22/09/2021
How to repair structural concrete cracks?

A 2-component polyurethane structural injection resin can be used to seal structural concrete cracks. Cracks may be dry, damp or wet, but free from standing water.

  • Sika Injection®-216

Alternatively, a 2-component solvent free, low viscosity epoxy injection resin can also be used to seal structural concrete cracks.

  • Sikadur®-52 MY
  • Sikadur®-52 LV MY

For more information, please consult Sika’s Technical Service Department.

Posted on: 22/09/2021
What is the difference between a PU injection foam and PU injection resin?

PU injection foam requires water to react. As it reacts, it will foam and expand to stop the water leaks within a short period. PU Injection foam are normally injected into cracks that are constantly wet with flowing water.

  • Sika Injection®-107 MY
  • Sika Injection®-125 MY
  • Sika Injection®-101 RC
  • Sika Injection®-216

 

PU injection resin do not foam when in direct contact with water (non-reactive to water). It is usedfor permanent water-tight sealing with some flexibility to absorb limited movement, in dry or damp cracks and joints. It is not suitable to be injected into cracks that are constantly wet with flowing water.

  • Sika Injection®-201 CE

For more information, please consult Sika’s Technical Service Department.

Posted on: 21/09/2021
What is the difference between a PU injection foam and PU injection resin?

PU injection foam requires water to react. As it reacts, it will foam and expand to stop the water leaks within a short period. PU Injection foam are normally injected into cracks that are constantly wet with flowing water.

  • Sika Injection®-107 MY
  • Sika Injection®-125 MY
  • Sika Injection®-101 RC
  • Sika Injection®-216

 

PU injection resin do not foam when in direct contact with water (non-reactive to water). It is usedfor permanent water-tight sealing with some flexibility to absorb limited movement, in dry or damp cracks and joints. It is not suitable to be injected into cracks that are constantly wet with flowing water.

  • Sika Injection®-201 CE

For more information, please consult Sika’s Technical Service Department.

Posted on: 21/09/2021

Tile Setting System

What are the benefits of sealing grout joints? How do I seal grout joints?

Generally, most grout joints are filled with materials made from cement, making the filling material porous and absorbs liquid readily. Consequently, grime, water and moisture can seep through it and under the tile. After a prolong period, problems such as debonding of tiles and hollowness may occur.

Sealing grout joints will reduce/prevent the growths of mold and mildew. It also prolongs the tile lifespan and minimize damage to a considerable extent by keeping water and moisture out.

Before sealing grout joints, carry-out a simple test by releasing droplets of water onto the grout. If it absorbs water, it is a tell-tale sign that the grout joint needs sealing.

Normally, grout joint sealing materials comes in liquid form. To seal grout joints, apply 2–3 layers of the sealing material onto the tile grout.

Sika’s Product: Sikagard®-703 GroutSeal

Posted on: 27/12/2021
What are the benefits of sealing grout joints? How do I seal grout joints?

Generally, most grout joints are filled with materials made from cement, making the filling material porous and absorbs liquid readily. Consequently, grime, water and moisture can seep through it and under the tile. After a prolong period, problems such as debonding of tiles and hollowness may occur.

Sealing grout joints will reduce/prevent the growths of mold and mildew. It also prolongs the tile lifespan and minimize damage to a considerable extent by keeping water and moisture out.

Before sealing grout joints, carry-out a simple test by releasing droplets of water onto the grout. If it absorbs water, it is a tell-tale sign that the grout joint needs sealing.

Normally, grout joint sealing materials comes in liquid form. To seal grout joints, apply 2–3 layers of the sealing material onto the tile grout.

Sika’s Product: Sikagard®-703 GroutSeal

Posted on: 27/12/2021
Can I mix tile grout with latex? Which latex should I use?

Yes, most cementitious tile grouts can be mixed with latex.

Sika’s Product: Davco Grout Admix Plus RL 1000

Posted on: 27/12/2021
Can I mix tile grout with latex? Which latex should I use?

Yes, most cementitious tile grouts can be mixed with latex.

Sika’s Product: Davco Grout Admix Plus RL 1000

Posted on: 27/12/2021
What is epoxy tile grout?

Epoxy tile grouts are made of epoxy resins and filler powder which makes it waterproof and resistant to stains, harsher cleaning detergents and mild chemicals. Its durability makes it the ideal choice for wet areas (eg. showers, kitchens and bathrooms), swimming pools, high foot traffic areas and commercial areas.

Sika’s Product: Davcopoxy 271

Posted on: 27/12/2021
What is epoxy tile grout?

Epoxy tile grouts are made of epoxy resins and filler powder which makes it waterproof and resistant to stains, harsher cleaning detergents and mild chemicals. Its durability makes it the ideal choice for wet areas (eg. showers, kitchens and bathrooms), swimming pools, high foot traffic areas and commercial areas.

Sika’s Product: Davcopoxy 271

Posted on: 27/12/2021
What is sanded and unsanded tile grouts?

Sanded tile grouts contain sand and is used for grouting floor and wall grout joints, with width between 3–12 mm. The sand thickens the grout to prevent shrinkage and cracks in wider grout joints.

Unsanded tile grouts does not contain sand and is used for grouting grout joints that are ≤ 3 mm wide. It has a smooth texture making it suitable for grouting smaller joints.

Sika’s Product: Davcogrout

Posted on: 27/12/2021
What is sanded and unsanded tile grouts?

Sanded tile grouts contain sand and is used for grouting floor and wall grout joints, with width between 3–12 mm. The sand thickens the grout to prevent shrinkage and cracks in wider grout joints.

Unsanded tile grouts does not contain sand and is used for grouting grout joints that are ≤ 3 mm wide. It has a smooth texture making it suitable for grouting smaller joints.

Sika’s Product: Davcogrout

Posted on: 27/12/2021
What is sanitized coloured tile grout?

Sanitized coloured tile grout is a cementitious grout designed for use with most types of ceramic tiles and natural stone applications and is available in a wide range of colours. The grout contains additives, which provides resistance to a broad spectrum of molds and mildew. It is mostly used in wet areas (eg. household kitchens and bathrooms)

Sika’s Product: Davco Sanitized Coloured Grout ECO

Posted on: 27/12/2021
What is sanitized coloured tile grout?

Sanitized coloured tile grout is a cementitious grout designed for use with most types of ceramic tiles and natural stone applications and is available in a wide range of colours. The grout contains additives, which provides resistance to a broad spectrum of molds and mildew. It is mostly used in wet areas (eg. household kitchens and bathrooms)

Sika’s Product: Davco Sanitized Coloured Grout ECO

Posted on: 27/12/2021
What is a tile grout?

Generally, there are two types of tile grout:

  1. cementitious tile grout – made of cement and filler powder
  2. epoxy grouts – made of epoxy resins and filler powder

The space in-between the tiles is called a “grout joint”. Tile grout is used for filling up grout joints in between tiles and natural stones and is available in a wide range of colours. It helps to keep dirt, debris and water from getting in between and under the tile. It also adds rigidity and strength to the tile installation besides keeping the tile line straight.

Sika’s Product: Davcogrout and Davcopoxy 271

Posted on: 27/12/2021
What is a tile grout?

Generally, there are two types of tile grout:

  1. cementitious tile grout – made of cement and filler powder
  2. epoxy grouts – made of epoxy resins and filler powder

The space in-between the tiles is called a “grout joint”. Tile grout is used for filling up grout joints in between tiles and natural stones and is available in a wide range of colours. It helps to keep dirt, debris and water from getting in between and under the tile. It also adds rigidity and strength to the tile installation besides keeping the tile line straight.

Sika’s Product: Davcogrout and Davcopoxy 271

Posted on: 27/12/2021
Are movement joints required for tiling?

Perimeter and field movement joints are essential and required when laying / setting tiles within an area.

Perimeter movement joints are required where the tilework abuts restraining surfaces such as perimeter walls, dissimilar floor finishes, curbs, columns, pipes, ceiling and where changes occur in backing materials.

As a general rule, field movement joints are required at approximately 7 m in each direction for indoor tilework, and 3–4 metres in each direction for outdoor tilework, indoor tilework exposed to direct sunlight and tilework on concrete slab above ground level.

Posted on: 27/12/2021
Are movement joints required for tiling?

Perimeter and field movement joints are essential and required when laying / setting tiles within an area.

Perimeter movement joints are required where the tilework abuts restraining surfaces such as perimeter walls, dissimilar floor finishes, curbs, columns, pipes, ceiling and where changes occur in backing materials.

As a general rule, field movement joints are required at approximately 7 m in each direction for indoor tilework, and 3–4 metres in each direction for outdoor tilework, indoor tilework exposed to direct sunlight and tilework on concrete slab above ground level.

Posted on: 27/12/2021
How do I select the right tile adhesive?

In selecting tile adhesives, you need to take into consideration the

  • type of substrate - screeds, concrete, boards, over existing tiles, heated floors etc.
  • type of tile and size - ceramic, porcelain, stoneware, large format, mosaic tiles etc.
  • the environment - outdoors, indoors, floors, walls, shower wall, bathrooms, wet areas etc.

For assistance, please contact us.

Posted on: 27/12/2021
How do I select the right tile adhesive?

In selecting tile adhesives, you need to take into consideration the

  • type of substrate - screeds, concrete, boards, over existing tiles, heated floors etc.
  • type of tile and size - ceramic, porcelain, stoneware, large format, mosaic tiles etc.
  • the environment - outdoors, indoors, floors, walls, shower wall, bathrooms, wet areas etc.

For assistance, please contact us.

Posted on: 27/12/2021
What tile adhesive should I use in swimming pools?

Tile adhesives that are categorised under C2TES1 are recommended to be use in swimming pools.

C2TES1 = Improved deformable cementitious adhesive with reduced slip and extended open time.

  • C2 Tensile adhesion ≥ 1.0 N/mm² (after normal curing, water immersion, heat aging and freeze-thaw cycles).
  • T Slip ≤ 0.5 mm
  • E Open time ≥ 30 minutes
  • S1 Transverse deformation ≥ 2.5 mm and < 5 mm

Sika also recommends the use of epoxy tile grout for filling up grout joints in-between tiles in swimming pools.

Sika’s Tile Adhesive: SikaCeram®-288 MY, Davco SAC 28 ECO or Davco TTB 98 + Davco Davelastic 98
Sika’s Epoxy Tile Grout: Davcopoxy 271

Posted on: 24/12/2021
What tile adhesive should I use in swimming pools?

Tile adhesives that are categorised under C2TES1 are recommended to be use in swimming pools.

C2TES1 = Improved deformable cementitious adhesive with reduced slip and extended open time.

  • C2 Tensile adhesion ≥ 1.0 N/mm² (after normal curing, water immersion, heat aging and freeze-thaw cycles).
  • T Slip ≤ 0.5 mm
  • E Open time ≥ 30 minutes
  • S1 Transverse deformation ≥ 2.5 mm and < 5 mm

Sika also recommends the use of epoxy tile grout for filling up grout joints in-between tiles in swimming pools.

Sika’s Tile Adhesive: SikaCeram®-288 MY, Davco SAC 28 ECO or Davco TTB 98 + Davco Davelastic 98
Sika’s Epoxy Tile Grout: Davcopoxy 271

Posted on: 24/12/2021
What is the difference between C1 and C2?

C1 has a lower tensile adhesion requirement (≥ 0.5 N/mm²), while C2 has a higher tensile adhesion requirement (≥ 1.0 N/mm²).

Posted on: 24/12/2021
What is the difference between C1 and C2?

C1 has a lower tensile adhesion requirement (≥ 0.5 N/mm²), while C2 has a higher tensile adhesion requirement (≥ 1.0 N/mm²).

Posted on: 24/12/2021
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