Product Data Sheet Show all documents

SikaTop®-541 Seal

(former MSeal 541)

Acrylic reinforced, cementitious, flexible waterproof coating

SikaTop®-541 Seal is a two-component, acrylic modified, cementitious coating that requires only on-site mixing to form the ideal product to waterproof and re-surface concrete, masonry, and most other construction materials. Simply applied by stiff brush, roller, trowel or spray, it forms a waterproof, flexible coating. SikaTop®-541 Seal provides an effective barrier to waterborne salts and atmospheric gases to prevent carbonation. Fluid applied, SikaTop®-541 Seal prevents the infiltration of water.

  • Excellent adhesion – bonds to porous and non-porous surfaces
  • Slight flexibility
  • Suitable for light pedestrian traffic
  • Breathable – whilst repelling water, allows substrate to breathe
  • Slurry or trowellable consistency; application is still possible by spray.
  • Unlike conventional coatings, which require a 7-28 day cure of concrete, SikaTop®-541 Sealcan be applied to 24 hour-old concrete, thereby giving immediate protection
Product Data Sheet Show all documents

Usage

  • To reface and even out variations in concrete surfaces
  • As a waterproof lining for water retaining structures like water tanks, pools and reservoirs.
  • For coating seawater channels
  • Sealing and coating tie bar holes to ensure water tightness
  • For waterproofing and protection against brackish water
  • To provide foundation protection
  • As a backing to marble and granite to prevent water ingress, and thus alleviate surface staining
  • To provide protection to concrete surfaces from carbonation and chloride attack
  • For use on pedestrian walkways in marine areas  

Advantages

  • Excellent adhesion – bonds to porous and non-porous surfaces
  • Slight flexibility
  • Suitable for light pedestrian traffic
  • Breathable – whilst repelling water, allows substrate to breathe
  • Slurry or trowellable consistency; application is still possible by spray.
  • Unlike conventional coatings, which require a 7-28 day cure of concrete, SikaTop®-541 Sealcan be applied to 24 hour-old concrete, thereby giving immediate protection

Packaging

SikaTop®-541 Sealis available in 20kg double pack (15kg powder + 5kg liquid)

Product Details

Product Information

Shelf life

Up to 12 months if stored according to manufacturer’s instructions in unopened containers.

Storage conditions

Store out of direct sunlight, clear of the ground, on pallets protected from rainfall. Avoid excessive compaction. Failure to comply with the recommended storage conditions may result in premature deterioration of the product or packaging.

Density

1.8 kg/l

Application

Consumption

Consumption

0.8-1 kg/m2/coat
Two coats are normally recommended
Apply the second coat at right angles to the first coat
Application steps

SURFACE PREPARATION

As like all coating systems, surface preparation is of prime importance. Remove all grease, oil, dust, residual curing compound, mould release agent or other contaminant that could impair adhesion. Laitance should preferably be removed by light sweep blasting or hydro jetting. Mechanical wire brushing may be appropriate for small areas.
Spalled concrete should be cut back to sound concrete and made good with a suitable cementitious repair mortar

MIXING

SikaTop®-541 Seal is supplied in pre-measured units and should be mixed on site utilising clean containers. Slowly add the powder to the liquid and mix, using a slow speed drill fitted with a suitable paddle. MIX AND USE. Do not mix more material than can be used within one hour.

 

APPLICATION

Saturate concrete surfaces with clean water whilst still visibly damp, but free of standing water; apply the first coat using short, stiff bristle brush or roller. Allow at least overnight to cure before applying the second coat. Dampen the first coat and remove excess water. Apply the second coat as above. Trowel application can be undertaken as necessary. For heavy 6-10mm depressions, honeycombs, etc. use less gauging liquid and mix to the desired consistency.

Documents