Stp, app membran application for waterproofing on roof top rooftop garden waterproofing @DSInterior
Channel: satpal bairwa
Date: 2023-09-07

New concrete should be cured for at least 28 days.
• Cementitous or Mineral based substrates must be prepared mechanically using abrasive 
blast cleaning or scarifying equipment to remove cement laitance and to achieve an open 
textured surface. 
• Loose friable material and weak concrete must be completely removed and surface 
defects such as blowholes and voids must be fully exposed. 
• Build-up proper gradient of the surface with PCC admixed with ShaliPlast IW.
• Ensure that level of all drain mouth is lower than deck slab level by at least 15 mm.
• Correct all construction joints by grouting with ShaliGrout IP at 1 m apart and opening of 
joints in “V” cut groove and fill with ShaliFix FRM, using ShaliSBR Latex as the bond 
Provide 75 mm x 75 mm coving made out polymer modified mortar prepared with 
ShaliCrete-Cement-Sand (1 : 2 : 5) after applying a bond coat with ShaliSBR Latex.
• The concrete must be carefully assessed for moisture content, air entrapment, and 
surface finish prior to any primer application
 Apply a coat of ShaliTex Primer / ShaliTex Primer WB @ 0.3 - 0.5 L / m2 and allow it
to dry till tack free.

• After the primer applied surface gets dried align SuperThermoLay® on the substrate by

unrolling the membrane.

• Re-roll the roll into its original form so that alignment is not disturbed.
appearance, 
Colour
Black membrane, PE film protection on both sides. Non-woven polyester
reinforcement
Handling & Storage
The membranes must be vertically stacked and stored in a shaded area covered by a 
thick fabric and tied securely in a manner that will minimize exposure to sunlight and 
UV. The membranes should be protected from all sources of heat and extreme 
temperatures. Always keep the rolls in vertical position.
Packaging For 2 mm - 1 m x 15 m, or 3 / 4 / 5 mm - 1 m x 10 m (Tolerance: ± 1%)
Shelf Life 12 months when stored as per recommendations.
Handling 
Precautions
The membrane is non-hazardous, non-flammable and therefore can be disposed of in 
any regular disposal areas. All membranes however should be disposed off only after 
wrapping with paper, plastic or cloth. In case of contact with human skin wash with 
any soft solvents. Seek medical assistance immediately in case of any allergy.

• Point the torch towards the primed surface and then on the underside of the membrane.

Torch till the compound reaches its softening points. 

• The best visual to confirm this is when the embossing on the membrane starts to 

disappear. 

• Roll the membrane forward while firmly pressing it to the substrate so that it bonds Keep 

overlap margin for minimum 100 mm between two adjoining membranes for end laps 

and a minimum of 75 mm for side laps. 
SuperThermoLay® is a five layered system with Atactic Polypropylene (APP) modified non-woven 
polyester reinforced weighing 160 g / m2 bituminous membrane (2 mm, 3 mm, 4 mm, and 5 mm) for 
superior waterproofing. This type of membrane shows excellent tensile strength and dimensional 
stability. The torch side of the membrane is covered with polyethylene film for protection of the 
membrane. The polymer modification of bitumen with APP results in an excellent resistance to hot and 
cold temperatures.
SuperThermoLay® with cold flexibility up to 2°C is supplied in following variants:
• Plain finish with thermo-fusible polyethylene film on both surfaces.
• Mineral / natural grey slate finish with thermo-fusible polyethylene film on one surface, and 
mineral / natural gray slate on the other surface.

• Ensure that a constant flow of bitumen is maintained across the whole width of the roll 

and that a bead of bitumen is extruded from all edge which demonstrates that a good 

seal has obtained. 

• All angles & abutments upstands should be sealed with extra care to ensure perfect 

bondage. Seal the edges well into grooves & protect to seal with a polysulphide / 

polyurethane sealant, namely, ShaliSeal PS GG / ShaliSeal PU GG. 

• SuperThermoLay® applied all over the terrace must be finished with a coating of

SuperSilverShield for non-trafficable area. For foot trafficable area, overlay with PCC 

dosed with ShaliPlast IW of 50 mm thick / tiles loosely laid or fixed.