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LV Prasad Institute, Vishakapattinam

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Commercial Building roof

ROOF WATERPROOFING

1.a.Exposed roof / Maintenance waterproofing

Products used : HYPERDESMO CLASSIC, MICROSEALER 50 , HYPERSEAL, ADYE.

Recommended Application procedure:

  • Prepare the surface as per standard norms.
  • After applying compatible primer, HYPERDESMO PU membrane is applied with roller or brush in one or two coats. Leave 6-24 hours between the coats.
  • Minimum recommended coverage : 1.2-1.5 kg/m2.
  • Commonly used colours : White, Grey, Green and Terracotta.
  • To improve abrasive resistance in selected areas the second coat is applied by adding ADYE component.

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1.b.Covered roof (with wearing tiles / Insulation board / Screed concrete)

Products used :Hyperdesmo PB 2K, Hyperseal, Microsealer 50

Application:

  • Prepare the surface as per standard norms.
  • Compatible primer is applied
  • HYPERDESMO PB 2K is mixed by equal volumes of component A and B with slow speed mixer.
  • Applied by roller / brush spray in one coat.
  • Use mixed quantities within 30 mins.
  • Recommended coverage: 1.0-1.5 lt/m2.

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Spray Application of Aquasmart Thermo

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GREEN ROOF SOLUTIONS

2a. Exposed Roof (Waterproofing with excellent Thermal Insulation)

Products used :Aquasmart Thermo, Micro Sealer and Hyperdesmo

Unlike other acrylic based surface reflecting paints, this product performance as extraordinary insulating layer like PU foam due to presence of 100% air entrapped closed cells in it.

Recommended application Procedure:

  • Apply with brush or roller, airless spray with consumption: 1 to 2 Lt/m2 depending upon the requirements.
  • In is also widely recommended as an insulating wall coating for both interior and exterior walls to replace extruded boards in BES system.
  • More over as it is highly elastic, bridge cracks developed on the externals surface of the building.
  • Unlike insulation boards, it has breathing property so it also acts as vapour barrier. Easy coloring of product with almost any water based pigment paste available at hardware stores.
  • Please contact our technical department for further details.

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GREEN ROOF SOLUTIONS

2b. Covered Roof

Products used :Aquasmartdur primer, Aquasmart PB, Sealants

AQUASMART®–PB is a new generation, water based Polyurethane coating with extended properties of virgin bitumen. Its exceptional thixotropic properties ideally suitable for the waterproofing of roof , foundation walls and wet areas like toilet, kitchen etc. The material unlike most bitumen emulsion based material ( Thermo plastic product ), Aquasmart PB is a true elastomer with quick drying, excellent elongation with recovery properties. AQUASMART®–PB is also available in a fire retardant version: AQUASMART®–PB-FR.

Application:

  • Application of Aquasmart PB is as per stardard application procedure mentioned in other products. It can be applied on wet surface. If the surface is dry, aquasmartdur primer is applied after dampening the surface.
  • Recommended Coverage: 1 to 2lt/m2.Aquasmart PB is applied in one or two coats.

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BASEMENT WATERPROOFING

RAFT SLAB & RETAINING WALLS

Products used : Aquasmart PB, Aquasmart durprimer ,Geo textile ,Gutta star protective membrane

AQUASMART PB (REFER PRODUCT DATA SHEET)

Application:

  • The binding concrete ( pcc) substrate should be free from projections prepared well to receive Aquasmart PB.
  • A coat of aquasamrt dur primer is applied as per recommended mixing ratio. Aquasmart PB is applied with brush / roller /spray over the primed surface.
  • The unique advantage of aquasmart pu membrane is that can be applied on damp surface of pcc which is common in many job sites.
  • It is recommended to reinforce with a layer of geo textile ( < 50 gsm) to have uniform coating thickness and better bonding in critical areas.
  • Recommended coverage : 1.5 kg to 2.5 kg per sqmt.
  • It is 100% green product completely solvent free product.

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TOILETS & BALCONIES

Products used : Aquasmart PB, Aquasmart durprimer ,Geo textile , Gutta star protective membrane:- Aquasmart PB (Refer product data sheet)

Application:

  • Toilet surface areas should be prepared to receive Aquasmart PB.
  • All pipe penetrations are treated as per standard norm.
  • A coat of Aquasamrt dur primer is applied as per recommended mixing ratio. Aquasmart PB is applied with Brush / roller /Spray over the primed surface. The unique advantage of Aquasmart PU membrane is that can be applied on damp surface of PCC which is common in many job sites.
  • It is recommended to reinforce with a layer of Geo textile ( < 50 gsm) to have uniform coating thickness and better bonding in critical areas.
  • Recommended coverage : 1.0 Kg to 2.5 Kg per sqmt. Depending on site condition.
  • Protective layer : Dimple protective membrane Gutta star is laid over the PU membrane before its is further covered with bed mortar and tiles.
  • Consult our technical team for BOQ specifications.

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WATER TANKS

HYPERDESMO 2K W a solvent free, thixotropic, two component based high quality elastomeric Polyurethane liquid membrane is designed formula for this application.

  • It is certified by latest Europe Union standards for storing portable water.
  • It is a strong coating with excellent resistant to chemicals and hydrolysis.
  • Since it is solvent free it is used it can be applied in closed water tank.
  • Also it can be applied as remedial waterproofing in old masonry tanks.
  • It can used in concrete, steel and precast structures and it is very effective across construction joints, Tie rod holes, pipe penetrations etc.
  • Coverage : 1 to 1.4 Kg per sqmt with base primer coat.

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PODIUM SLAB WATERPROOFING

Products Used : Hyperdesmo PB 2K, primer, Geo Textile, Drainage membrane

HYPERDESMO PB 2K ( Refer TDS )

Application :

  • After preparing the surface as per standard norms. After applying compatible primer, HYPERDESMO PB 2K is mixed by equal volumes of component A and B with slow speed mixer.
  • Applied with roller / brush spray in one coat.
  • Apply mixed quantities within 30 mins.
  • Recommended coverage: 1.0-1.5 lt/m2.

HYPERDESMO PB 2K is certified by CE: ETA-10/0095, exceeds the requirements of ASTM C836-95, with Inherent root resistance properties. It is most preferred and time tested Podium slab treatment across the world.

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EXPANSION JOINTS - up to 50mm

HYPERSEAL POYURETHANE SEALANTS

Sealants are not only the most widely used waterproofing materials but also most incorrectly used. Although sealants are a relatively minor cost item, they constitute a major function in building’s life cycle.

A good sealant should have following properties :

  • Elongation (The ability of a sealant to increase in length then return to the original size)
  • Modulus of elasticity (Low modulus sealants have a higher ability to stretch than high modulus sealants)
  • Adhesion strength : It is the ability of sealants to bond to the substrate.
  • Gun grade PU sealants for vertical wall application and for limited width on horizontal expansion joints -- HYPERSEAL 25 LM S

Application :

  • The substrate must be clean, solid, and dry, and free from adhesion inhibiting materials such as waxes, oils, and old coatings.
  • The sides of the joint should be primed with Microsealer Primer ( for dry surface) and Aquadur ( Primer for wet surface).
  • The Joint Sealant is smoothed, for with a knife of spatula. The edge masking tape should be removed before the Joint Sealant has hardened.

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EXPANSION JOINTS - up to 100mm

HYPERSEAL 2K F

It is a two component, self levelling, non sagging pourable grade PU sealant and has ability to withstand vehicular traffic and compatibility with PU liquid membranes etc makes it most recommended sealants for horizontal decks of Podium slabs.

Hyperseal 2K F are low modulus sealants and have high joint movement capability averaging 25% with joint design limitation of four times.It is ideally suitable for large expansion joints .

Please note that PU Sealants cannot be used in joints containing Polysulphide or its residue.

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ROOF GARDEN

Roof garden area is treated with HYPERDESMO PB 2K or HYPERDESMO POLYUREA.

( Refer more details about HYPERDESMO PB 2K)

  • After curing of PU membrane GUTTABETTA drainage membrane is laid.
  • Gutta betta membrane, par excellence in all construction sites where the technical component is important in terms of drainage capacity and mechanical strength.
  • Perfect for dry roof gardens, as an alternative to the filtering layer.
  • Light and easy to handle.
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REMEDIAL WATERPROOFING - I

(PU GROUTING)

WATERFOAM is a one component polyurethane, hydrophobic resin, which reacts with water to produce a flexible grout suitable for waterproofing and sealing cracks and joints of concrete surfaces, and for effectively stopping water leaks.

  • Recommended for use on concrete elements subject to structural movements.
  • Application is by one component injection pump.
  • Used to stop leakages in Basement structures, Tunnels & Underpasses, Tanks, dams etc.

( Consult our technical team for further details)

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SPORTS FLOOR & INDUSTRIAL APPLICATIONS

HYPERFLOOR

Hyperfloor is a two component, self levelling solvent free polyurethane floor coating on curing produces a strong, non toxic, slightly elastic film with excellent Tensile and tear strength , exceptional adhesion to various surfaces.

  • It has excellent abrasion and Chemical resistance. Unlike epoxy It has long pot life.
  • Polyurethane HYPERFLOOR With ADYE top coating HYPERLOOR is three times more abrasive resistant and chemical resistant than epoxy.
  • Another advantage of polyurethane over Epoxy is that it is U.V. stable. This means that it won’t yellow like epoxy does when exposed to small amounts of sunlight over a period of time.
  • It is also available in both matt and glossy finish.

Other unique products from ALCHIMICA like HYPERDESMO ADYE high abrasive resistant top coating for car parking decks. Another uprising product from ALCHIMICA is HYPERDESMO T. which is 100% aliphatic, transparent coating, ideally used over the existing tiles. It is non yellowing bubble free transparent waterproofing coating.

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