BestSeal AC400

Elastic, modified co-polymer water-proofing membrane

Advantages:
  • One component, easy to apply. 
  • Highly adhesive and seal all small cracks.
  • Weather resistance, especially, UV beam resistance.
  • Easy to apply with popular tools such as brush, roller, sprayer…
  • Non-pollution 
  • Non-toxic, non-flammable, non-odour
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  • BestSeal AC400 is a waterproofing compound, one component, modified polymer base with high elasticity.

BestSeal AC400 is waterproofed for items follow: 

  • Eaves, flat roof, floor of water-closet ... 
  • Swimming pool, bridge deck, drainage… 
  • Camp ceiling, balcony, basement … 
  • To fill the hole of metal sheet roofing, fill the crack concrete, fill joints,…
  • One component, easy to apply. 
  • Highly adhesive and seal all small cracks. 
  • Weather resistance, especially, UV beam resistance. 
  • Easy to apply with popular tools such as brush, roller, sprayer… 
  • Non-pollution 
  • Non-toxic, non-flammable, non-odour

Chemical content:

Modified co-polymer and mineral powders, additive

Appearance / Color

Plasticizing liquid (creamed shape), natural grey

Density:

1.40 ± 0.02 kg/liter.

Dose:

0.4 ÷ 0.8 kg/m2 /layer (depend on surface condition)

Tensile strength: ≥ 1.0 MPa (ASTM D412-02)
Elongation at break: ≥ 200% (ASTM D412-02)
Bonding strength: ≥ 0.75 MPa (ASTM D4541-02)
Water pressure: ≥ 0.6 MPa

Preserve:

In cool, dry place (5oC ÷ 35 oC)

Shelf – life:

12 months upon manufacturing date

Packaging:
5 kg/pail; 20 kg/pail; 25 kg/pail


Surface preparation:

  • Surfaces should be structurally clean, oil free, no grease or any other contaminants.
  • Use water pressure jetting to finally wash.
  • Before applying, the surface must be saturated with water (but absolutely not happening puddles). 

Placing:

  • Using a brush, a short roller (or pressure nozzle), apply BestSeal AC400 on the entire surface prepared as described above. 
  • Construction requirements must ensure that the entire surface area to be waterproofed is completely covered with BestSeal AC400.
  • When applying the second layer, it should be done in a direction perpendicular to the first application to minimize the process of air entraining between the two layers of material.

Precaution:

  • Properly stirring before use. 
  • Do NOT work on non-saturated or puddles surface.
  • For the high absorbing surface, it is needed to dilute BestSeal AC400 with 5 ÷ 10% clean water (by weight) in order to increase deeply absorbing capacity of material into substrate. 
  • Apply at least two layers, waiting time between 2 layers: 4 ÷ 24 hours 
  • Do not apply BestSeal AC400 while it rains. In case of raining when applying, stop the job and cover carefully all applied area.
  • For the surface area under constant mechanical stress during use, it must be rolled coated cement-sand (after 24 to 48 hours of placement) to protect BestSeal AC400 layer against mechanical stress on materials surface. 
  • BestSeal AC400 is able to self-maintain by air, no water to humidify the applied surface (in the case of no protective cement-sand coating).

Cleaning:

  • Clean equipments immediately after the execution and before the mixture’s hardening.

Safety:

  • BestSeal AC400 is non–flammable light alkaline.
  • BestSeal AC400 is allergic to skin. Protective clothing is highly recommended. In case of contact with eyes, rinse immediately with plenty of clean water and seek medical advice.