My car porch concrete flat roof has crack and it is leaking, how do I fix it?

Fixing crack with Sikadur®-20 Crack Seal

  1. Slightly widen and increase the surface on the existing cracks.
  2. Remove dit and dust from the cracks.
  3. Mixing: Pour component A & B into the bottle with 1:1 composition.
  4. Shake it slowly for 15–20 times until uniformly mixed.
  5. Apply mixed material into cracks / caviies until full. wait till it dries.


Apply SikaCoat®-500 Super

  1. Mix SikaCoat®-500 Super manually or use a low speed mixer until it is completely homogeneous prior to application.
  2. Apply a generous base coat of SikaCoat®-500 Super using roller or brush.
  3. when touch dry, apply another layer of SikaCoat®-500 Super at different direction.
In laying / setting tiles, why should I use tile adhesive instead of a site batch mortar (mixture of cement + sand + water)?

The traditional method of laying/setting tiles with site batch mortars often occupies large areas for mixing and storing (bag cement and sand). Furthermore, inconsistency in the mixing of site batch mortars often leads to problems such as shrinkage and fast setting which eventually affects its bond strength (poor bonding).

Pre-bagged cementitious tile adhesive is easy to use, just add water and mix, and the product is ready to be applied. Hence, saving a lot of time, energy, and space. Moreover, additives in the tile adhesive assist in water retention and improving setting times thus reducing shrinkage and fast setting. As a result, higher bonding strength is attained.

Posted on: 22/09/2021
What are the substrate preparation work that I should do before laying / setting tiles?

All substrates must be structurally sound, level (plumb), solid and stable, and free from dusts, dirt, oil, grease, standing water, laitance, paints, curing compound and any material/coatings that reduces bond. If the substrate contains any of these contaminants they must be removed by grinding, water-jetting, or sanding.

All dusts, loose and friable material must be removed, preferably by brush and/or vacuum before laying / setting tiles.

Posted on: 22/09/2021
Is it possible to tile over existing tiles or finishing?

Yes, provided the existing tiles are in relatively good condition (solid and sound). Tiling over badly damaged or uneven tiles is not recommended as it will cause further complications and possible repairs to the newly laid/set tiles. So, it is advisable that you assess the condition of the existing tiles. A solid, level, and clean work surface that is free from cracks, crumbling grout, or signs of retained moisture are conditions that are suitable for tiling over.

Posted on: 22/09/2021
Should I use a primer before tiling?

Although the use of primers is not widely practiced in tiling most substrates, priming can improve the laying/setting of tiles by eliminating dust and stopping the substrate from absorbing all the water from tile adhesives, especially when the substrate is porous.

For assistance, please contact us.

Posted on: 22/09/2021
What are the differences between porcelain and ceramic tiles? Does this affect the type of tile adhesive I should use?

Porcelain tiles are more durable (denser and harder), has lower water absorption properties (≤ 0.5 %), and are normally used in areas with high volume of foot traffic (eg. commercial properties, hotels, offices, and retail outlets). Hence, porcelain tiles require a tile adhesive with improved bonding properties (C2).

Sika’s Product: SikaCeram®-188 MY, SikaCeram®-288 MY and Davco Porcelain Flexibond 600

On the other hand, ceramic tiles are easier to use (less brittle, easy to cut and shape), have higher water absorption properties (˃ 0.5 %), and are normally used for walls and floors in housing projects, interior walls of commercial buildings and low volume foot traffic areas. Therefore, ceramic tiles require a tile adhesive with normal bonding properties (C1).

Sika’s Product: SikaCeram®-100 MY, SikaCeram®-128 MY, Davco 168 and Davco 333

Posted on: 22/09/2021
What are tile adhesives?

Tile adhesives are specially formulated factory-made, ready to use adhesive with improved bonding and thixotropic properties. They are used as adhesive for laying/setting tiles (ceramic, porcelain, natural stones etc.) on walls and floors, both indoors and outdoors.

Posted on: 22/09/2021
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 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 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 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
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 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