RCC Roof waterproofing solutions – With existing APP Membrane/ screed/ brickbat coba/ Tiles

Our observations are given below:

• Experiencing water seepage from concrete terrace due to expansion joints damage
• The existing waterproof coating delaminated from the concrete slab.
• Observed fine cracks in the slab need to be repaired before application of coating.

 

Solution:

• We suggest D016 DURABUILD Microfiber Reinforced Elastomeric Waterproof Coating for terrace waterproofing.
• D016 DURABUILD Microfiber Reinforced Elastomeric Waterproof Coating is a heavy duty liquid applied waterproofing membrane system, composed of specially developed highly elastic & resilient acrylic polymers, properly selected & graded fillers, lightfast & weather durable pigments, micro-fibres, additives & superior quality biocidal in water medium.
• It is typically used as a 3 layer coating system where the performance can be enhanced for large roofs, by providing a fibre mesh that is sandwiched between the coats.

 

D016 DURABUILD Microfiber Reinforced Elastomeric Waterproof Coating Features & Benefits:

• No need to remove existing sound brickbat coba, plaster, APP from concrete surface.
• Can be applied on cementitious and metal substrates.
• Provides higher dry film thickness of 1 to 1.2 mm in three coat application.
• Forms highly elastic & resilient coating so helps to withstand the structural movements.
• Bridges cracks up to 2 mm width.
• Higher tensile strength, tear resistance & bond strength with cementitious substrates
• Breathable & UV/ Weather Resistant.
• Light in weight does not add extra weight over the roof.
• Water based; hence non-toxic in nature.
• Excellent abrasion resistance. No additional protective coating needed for light foot traffic.
• Can be easily applied by brush & roller easily.
• Easy to recoat existing surfaces coated earlier with D016 DURABUILD Microfiber Reinforced Elastomeric Waterproof Coating

 

D016 Durabuild Microfiber Reinforced Elastomeric Waterproof Coating Application Methodology:

1. Remove the loose material, existing coatings, dust, etc. on the area. Rake out the cracks to remove any loose mortar or loose concrete.
2. Fill the cracks using C.M (1:4) admixed with D007 DURABUILD ACRYLIC POLYMER@ 5% by weight of cement. 
3. Make a coving of size 50mm * 50mm at slab-wall junctions and other change in directions using C.M 1:4 admixed with D007 DURABUILD ACRYLIC POLYMER@ 5% by weight of cement. Any depressions on the surface shall be repaired with using C.M 1:4 admixed with D007 DURABUILD ACRYLIC POLYMER@ 5% by weight of cement.
4.  Clean the coating area first with wire brush and finally with enough water to remove tough dirt.
5. In case of presence of undulations of greater than 2 mm on the surface, it needs to be levelled using DURABUILD cementitious levelling mortar/ screed preceded by a bonding coat using D007 Acrylic Polymer and cement in ratio 1:1.
6. For smaller undulations, make the concrete surface to SSD and apply cementitious slurry coating with D007 DURABUILD Acrylic Polymer and cement at 1:2 ratio and allow it to dry for 6 hours.
7. Dilute 2 parts of nano-technology based primer D180 DURABUILD ANTI EFFLORESCENT PRIMER with 1 part of water and apply over the surface. Allow it to dry for 2 to 3 hours.
8.  Apply one coat of D016 DURABUILD MICROFIBER REINFORCED ELASTOMERIC WATERPROOF COATING over the entire area.
9. When the first coat is dry, apply the fibre mesh over the wet coating.
10. Apply the second coating of D016 DURABUILD Microfiber Reinforced Elastomeric Waterproof Coating over the coated area at perpendicular direction to the first coat and allow it to become dry. Finally apply the third and final coat of D016 DURABUILD MICROFIBER REINFORCED ELASTOMERIC WATERPROOF COATING at perpendicular direction to the second coat and allow it to become dry.

Sheet Metal Waterproofing and Joint Treatment solutions (GI / SS / Aluminium)

Problem:

Experiencing water seepage from sheet metal roof from sheet overlap joints/fastener holes/ all machinery metallic base openings/ Duct opening.

Solution:

• We suggest D066 Durabuild Cool Roof Waterproof Coating for roof waterproofing. 
• It is a heavy duty liquid applied waterproofing membrane system, composed of specially developed highly elastic & resilient acrylic polymers, properly selected & graded fillers, lightfast & weather durable pigments, micro-fibres, additives & superior quality biocidal in water medium with solar heat reflection properties (Temperature Reduction Up to 7°C inside the cabin ).
• It is typically used as a 3 layer coating system where the performance can be enhanced for large roof.

D066 Durabuild Cool Roof Waterproof Coating Features & Benefits:

•  Heat temperature reduction by 7 °C inside the cabin
•  Provides higher dry film thickness of 1 to 1.2 mm in three coat application.
•  Forms highly elastic & resilient coating so helps to withstand the structural movements.
• Bridges cracks up to 2 mm width.
•  Higher tensile strength, tear resistance & bond strength with cementitious and metal substrates
•  Breathable & UV/ Weather Resistant.
• Light in weight does not add extra weight over the roof.
•  Water based; hence non-toxic in nature.
• Excellent abrasion resistance. No additional protective coating needed for light foot traffic.
•  Can be easily applied by brush & roller easily.
• Easy to recoat existing surfaces coated earlier with Durabuild Cool Roof Waterproof Coating

Joint Treatment Solution:

• D920 Durabuild Epoxy urethane Sealant two-part gun grade sealant is formulated from a blend of epoxy and urethane polymers.
• The mixed sealant is thixotropic can be applied directly into vertical and horizontal joints to form a tough resilient seal possessing a limited degree of flexibility.

Features of D920 Durabuild Epoxy urethane Sealant:

• Good resistance to chemicals and hydrocarbon fuels
•  Excellent adhesion without primer to dry clean substrate
• Gun grade ensures ease of placing
• Suitable for use in wide joints up to 50mm

D920 Durabuild Epoxy urethane Sealant – Typical Properties:

Movement accommodation factor	10%
Specific gravity	1.35gm/cc
Shore A hardness	60 – 80
Application temperature	+5°C to 45°C
Cure time	20°C	30°C
Initial	24 hours	12 hours
Final	3 days	2 days

D920 DURABUILD EPOXY URETHANE SEALANT APPLICATION METHODOLOGY:

1. Clean any rust or loose material in the joints.
2. Apply D920 Durabuild Epoxy Urethane Sealant on the sheet metal overlap joints/Fastener joints/Horizontal and vertical joints/ Gutter joints /duct outings joints/ Exhaust Ducts joints to make them sealed and waterproofed.
3. This should be followed by one sealer coat of D010 Durabuild Elastomeric Bituminous Coating to bridge any cracks that may occur in the system over the period of time.

Durabuild Cool Roof Waterproof Coating Application Methodology:

1. Remove the loose waterproofing membrane, other loose material, dust, etc. on the area.
2. Any highly corroded sheets shall be repaired or replacedand any loose rivets and empty rivets shall be re-fixed (Client Scope).
3. Fill the joints and other openings, holes, etc. using D920 Durabuild Epoxy PU Sealant
4. Clean the coating area first with wire brush and finally with enough water to remove tough dirt.
5. Dilute 2 parts of nano-technology based D180 Anti Efflorescence Resistant Primerwith 1 part of water and apply over the surface. Allow it to dry for 2 to 3 hours.
6. Apply one coat of Heavy Duty Micro-fiber Reinforced Acrylic Waterproof Coating D066 DURABUILD COOL ROOF WATERPROOF COATING over the entire area.
7. When the first coat touch dry, apply the second coating of D066 DURABUILD COOL ROOF WATERPROOF COATING over the coated area at perpendicular direction to the first coat and allow it to become dry. Finally apply the third and final coat of D066 DURABUILD COOL ROOF WATERPROOF COATING at perpendicular direction to the second coat and allow it to become dry.

Water Proofing Admixtures

Integral waterproofers simply need to be admixed with concrete or mortars at the time of mixing/batching.

CAPISEAL

CAPISEAL LC+

DURALEAKPLUG

DURATITE HR

DURACRIL

DURAKRIT

DURATITE LW+

They perform their function on the pores/cracks rather than on the surface thereby ensuring long term durability of your structure. They accelerate the formation of CSH gels or rock inside concrete; thereby breaking the pore connectivity and reducing the permeability of concrete.

Crystalline Waterproof Coating

CAPISEAL^TM (Code: D051) is a deep penetrative, reactive, cementitious crystalline capillary waterproofing coating system. It contains proprietary blend of portland cement, quartz aggregate and special additives. In the presence of moisture, the active chemicals in CAPISEAL crystalline waterproofing system penetrates concrete and react chemically with free lime to produce water-insoluble nano-crystals. This crystalline growth reduces porosity by blocking capillaries and filling hairline non structural cracks caused by shrinkage or expansion. Unlike metallic and membrane types of waterproofing which only form a surface barrier, CAPISEAL crystalline waterproofing system, in the presence of water, continues producing crystals and lasting imperviousness to water.

Uses:

CAPISEAL^TM crystalline waterproofing system is used for waterproofing against the positive or negative sides of hydrostatic heads of water, for damp-proofing, repairing cracks, plugging holes, sealing wall – floor joints and stopping active leaks in a wide variety of conditions including

• Water tanks, Reservoirs
• Building Basements & foundations
• Swimming pools and water parks
• Sewage and Water treatment plants
• Dams, canals, Tunnels, Harbours
• Retaining walls & sea defence walls
• Concrete pipes

Features:

• Suitability to potable water
• Penetrates concrete, seals capillary tracts
• Contains no chloride
• Easy to apply
• Resists chemical attack of sewage and industrial wastes
• Suitable for external and internal applications.

Application Method:

Surface Preparation

Old Concrete

Surfaces must be clean and sound. Remove all oil, dirt, laitance and other contaminants by water blasting. Water blasting is preferred for surface preparation because it mechanically cleans and roughens the surface, is environmentally safer and leaves the surface saturated with water. Surface must be damp for application of CAPISEAL^TM crystalline waterproofing system.

New Concrete

After forms are stripped, acid etch or water blast as above to remove form oils and laitance. Surface must be left damp for application on CAPISEAL^TM crystalline waterproofing system. For horizontal surfaces, the crystalline powder can be broadcast on the top surface while concrete is still green @ 1-1.5 kg/sqm. Construction joints, cold joints and non-leaking joints greater than 0.25mm wide must be cut in V-groove shape and filled with CAPISEAL^TM crystalline waterproofing system in mortar consistency.

Mixing

2 to 2.25 parts of CAPISEAL^TM powder (by volume) shall be added to 1 part of clean potable water and mixed thoroughly with a slow speed drill equipped with a paddle. For larger batches, mixing shall be done with a mortar mixer. If mixture thickens, it shall be re-stirred to reduce consistency. The average water demand for a fluid consistency is from 28% to 30% (7 to 8 Liters for one bag of 25 Kg). Mix the applying quantities in 30 minutes.

Curing

CAPISEAL crystalline waterproofing system application must be kept moist for a minimum of 48 hours. After initial set, moist curing, using continuous water spray is recommended. Treated surfaces shall be fog sprayed 3 to 4 times daily for the 48 hour period. For warmer climates, more frequent spraying may be required. It is important to keep the CAPISEAL crystalline waterproofing system moist to allow the crystal formation to occur. The surfaces shall be protected from foot traffic for 48 hours or heavy traffic for 7 days. Freshly applied CAPISEAL^TM crystalline waterproofing system must be protected from extreme weather conditions such as rain, strong winds, high temperatures and freezing for a period of not less than 48 hours after application. A minimum of 7 days of air curing shall be allowed prior to immersing the surface in water.

Technical Data:  

PARAMETERS	SPECIFICATION	TEST RESULTS
Appearance		Grey coloured free flowing powder
Pot life of the mixed material @ 30°C and @ 60% RH, mins		20-30
Mixed Density, kg/l		1.85
Mix Ratio, Water:Powder by weight		1:3
Resistance to Positive pressure		>10 bar
Resistance to Negative pressure		>10 bar
Static crack accommodation	ASTM C 1305	No cracking up to 1 mm
Carbonation resistance (3 weeks)	Taywood Method	No Carbonation observed
Chloride ion penetration resistance, % (reduction against control)	ASTM C 1202: 97	90
Water Permeability, mm	DIN 1048 (Pt. 5):1991	No penetration observed at water pressure of 5 bars

Technical Support:

Durabuild offers a comprehensive range of waterproofing products and coatings. In addition, Durabuild offers technical support service to specifiers, end users and contractors, as well as on-site technical assistance in locations all over the country.

Coverage:

 CAPISEAL^TM is approximately 1-1.5 kg /m² per application by brush depending on the surface texture and porosity.

Packaging:

20 kg pails

Shelf Life:

CAPISEAL^TM crystalline waterproofing system concentrate should be stored in protected, dry areas. When left in original unopened package, CAPISEAL^TM crystalline waterproofing system will maintain its design performance characteristics for 12 months.

Health & Safety:

CAPISEAL^TM crystalline waterproofing system contains chemicals that may cause irritation to the eyes and skin. Goggles, rubber gloves and long sleeves should be worn when working with these products. Read warnings noted on product package and refer to product material safety datasheet (MSDS) prior to use.

DURALEAKPLUG

Features:Instant leak plugging and quick fixing if nozzle. It is widely used as a plugging compound for basements

Application Area:

Pipe joints, retaining walls. Tunnels and sewage works, where water is pouring under pressure

Consumption/coverage:Packing:

In 5 Kgs, 25 Kgs, and 250 Kgs

Short Description:

Rapid / Quick setting /Hardening Compounds for Cement Mortar & Concrete

Description:

DURALEAKPLUG is an extra fast setting waterproofing/plugging compound. It is a red coloured liquid.

Technical literature: (click to view literature)

DURATITE HR

Features:New generation waterproofing-cum-superplasticiser, Highest possible water tightness

Application Area:

Basements, reservoirs, retaining walls, cannels, bridges, swimming pools, dams

Consumption/coverage:

250 ml per 50 kg bag of cement

Packing:

1Kg, 5 Kg, 25 Kg, 250 Kg containers

Short Description:

Integral Cement Waterproofing Compound-cum-Superplasticiser

Description:

DURATITE HR is a dark brown waterproofing liquid admixture with high water reducing and pores blocking actions. DURATITE HR is very useful superplasticiser for producing high strength and free flowing concrete.

Technical literature: (click to view literature)

MSDS:(click to view MSDS)

DURACRIL

Features:Chloride free, Corrosion inhibitor, Water reducer, Compatible with all type of cement

Application Area:

Box type method of waterproofing in basements/underground structures where Agra/Kota stones are used

Consumption/coverage:

½ kg per 50 kg cement

Packing:

25 kg and 225 kg container

Short Description:

Acrylic Integral Waterproofing Compound in liquid form

Description:

DURACRIL is an acrylic liquid waterproofing agent to produce a waterproof concrete and mortar

Technical literature: (click to view literature)

D007 – Acrylic Polymer (DURAKRIT)

Multipurpose acrylic polymer for waterproofing and repair with corrosion inhibitor DIFFUCIT® Technology

Description:

 DURAKRIT is an acrylic based cementitious liquid polymer with the state-of-the art DIFFUCIT technology designed for use as an additive with cementitious systems for bonding coat, waterproof coating and cement/sand mortars, screeds, etc.

Uses:

• As a bonding agent between old and new concrete, mortar, render, screed layers.
• As an adhesion promoter of render over insulation boards and similar materials.
• Waterproof, damp-proof, anti-carbonation/anti-efflorescence coating with cement slurry.
• As an additive for patching or mass-infill polymer mortar.
• As a bonding agent and additive for polymer modified mortars in structural repair applications.
• Waterproofing in overhead/underground concrete tanks, sunken portion of toilets/ bathrooms, roofs/ terraces/ basements etc.
• As an additive for injection grouting into cracks and fissures.
• Anti corrosive coating to steel/re-bar with cement.
• Protective layer/coating for cementitious surfaces over spill-way, bridge deck, pavement, garage, stair-treads, drains.
• For waterproof, abrasion resistant and chemical resistant surfaces in sewage treatment plants and industrial floors.
• Excellent long lasting waterproof/protective and decorative coating with cement paint, superior to virgin latex polymer/acrylic filler coating.

Features:

• Inbuilt DIFFUCIT technology helps in corrosion resistance
• Improves strength characteristics of cementitious systems allowing thin layer applications.
• Highly waterproof cementitious composite.
• Excellent bonding to the most building materials.
• Good breathability.
• Resilient and yet tough hardened cementitious film or mortar

Application Method:

1 SURFACE PREPARATION

The surface must be sound clean and free from oil, grease or other contaminants. Any loose materials, rust scale, dirt, laitance, etc shall be removed by suitable means. For areas affected by corrosion, any exposed reinforcement shall be treated with suitable anti-corrosive systems. The surfaces shall ideally be in Surface Saturated Dry (SSD) before application of DURAKRIT modified cementitious systems.

2 MIXING & APPLICATION

Mixing: The different proportions for various applications are given in the table below. In application as an additive with cement-sand mortars, dry mix the ingredients well before adding DURAKRIT and gauged water.

Application: Waterproofing coating: Apply the waterproofing slurry on the SSD surface with a brush. The second coat may be applied after 5 to 6 hours. Simple moist curing can be done after 10 hrs. For larger areas, glass fabric may be laid as a sandwich layer between the two coats. Protect the freshly laid surface from rain and heavy sun so that rapid drying out of coating is prevented. Traffic may be opened after two days. Care should be taken not to damage the coating during subsequent activities.

3 POST APPLICATION CHECKLIST FOR WATERPROOFING

• Conduct ponding test by filling water up to 50 mm height for 48 hours to ensure leak-free terrace.

Precautions and Limitations:

• All corners, gaps, joints, protrusions & outlets shall be coated with two extra coats.
• Do not apply during heavy sunshine, rains; or strong winds.
• Substrate MUST be in SSD condition for application of primer.
• The product shall be protected from any damages by suitable means.

Technical Data:

PARAMETERS	TEST METHOD	PROPERTIES
Fresh Wet Density, kg/m3		2000-2100
Pot life of the mixed material @ 30°C and @ 60% RH		20-30 minutes
Application Temperature		2° C -45° C
Adhesion Strength (28 days),kg/cm²	ASTM D 7234	9.0
Tensile Strength, (28 days),kg/cm²	ASTM D 522	45
Elongation at break, %	ASTM D 522	19.0
Carbonation resistance (3 weeks)	Taywood Method	Sc >150mm
Initial Surface water absorption,% (reduction against control)	BS 1881(Pt.5): 1983	90
Water Vapour permeability, perms	ASTM E-96	4.8
Water Permeability, mm	DIN 1048 (Pt. 5):1991	Withstands 20m water pressure head @ 1mm DFT

Coverage

 

Application	Cement (kg)	Sand (kg)	Durakrit (kg)	Typical Yield in Litres	Typical Coverage, m2 with X (mm) Thickness.
Bonding Coat	2	2 (Zone III)	1	2.5	3.5 (Single Coat), x=0.80
Waterproofing coating	2	–	1	1.6	2.50 (2 Coats), x=1.10
Repair/Tiling mortar /Quick Setting Polymer Mortar	2	5.5 (Zone II) (For quick set add Dura 3 @ 0.10 L	1	4.2	2.25 x=2
Heavy duty floor topping mortar	2	4.6 (Zone II) Gravel 6 mm = 4	1	5.6	1.15 x=10
Injection Grouting	2	Dura EV @250 gm/50 kg Cement	1	1.7	–

Packaging:

500 gm, 1 kg, 5 kg, 20 kg & 200 kg

Shelf Life:

Shelf life is 12 months from the date of manufacturing in unopened condition. Store in a cool & dry place.

Health & Safety:

• Skin Contact: Wash skin with soap & water. Remove contaminated clothes.
• On eye contact: Immediately splash eyes with plenty of water. Consult Physician if irritation persists.
• Ingestion: Do not induce vomiting. Never give anything by mouth to an unconscious person. Call a Physician.

 

 

 

Integral Waterproofing Compound

High range Integral waterproofing compound for concrete / mortar -cum- super-plasticizer

Description:

D001 is a normal setting cement integral waterproofing compound in liquid form formulated from specialized active ingredients to make waterproof concrete and mortar when there is permeability through hydrostatic head pressure or capillary absorption.

Uses:

• External plastering –masonry  & concrete wall,
• Roof deck
• Basement
• Lift pit , water tanks, toilets

Features:

• Permeability of concrete due to hydrostatic head pressure or capillary action is greatly reduced.
• With increased cohesion, segregation and bleeding are substantially reduced.
• Increased durability due to integral waterproofing of concrete.
• Increased retention property of slump.
• Retains breathing efficiency of concrete.
• Improved surface finish of concrete.
• Very high quality – indigenous polymer blend.
• Reduced shrinkage cracks.

Application Method:

Make use of strong water reducing action and follow relevant rules of mix design and concreting practices. D001 admixture may be added along with 20% mixing water to the concrete/mortar mix. Do not add this admixture to the dry concrete mix.

Precautions and Limitations:

Take only the quantity that is required for the area and keep the lid of the container closed.

Technical Data:  

PROPERTIES	DESCRIPTION	SPECIFICATION
Physical appearance	Dark brown liquid
Specific Gravity at 270C	1.18 ± 0.02
Chloride Content, %	0.1	IS:2645
Setting Time	Conforms	IS 2645
Water permeability	Conforms	IS 2645

 

Test results as per IS:2645-1975

Cement :           OPC 43 grade

Sand       :         Zone III

 

PROPERTIES	CONTROL MIX (WITHOUT ADMIXTURE)	WITH D001
Compressive Cement Strength(kg/cm2)	None	150 ml per 50 kg cement
3 days control	220	220
7 days control	280	285
28 days control	330	340
Permeability to Water with 2Kg/cm2 pressure or with 8hrs. percolation in ml.	1800	260
Chloride % by declared mass.		Traces

Dosage:

150-200ml per bag of cement

Packaging:

200 ml, 1 ltr, 5 ltr, 20 ltr, 50 ltr & 200 ltr

Shelf Life:

Shelf life is 12 months from the date of manufacturing in unopened condition. Store in a cool & dry place.

Health & Safety:

• Skin Contact: Wash skin with soap & water. Remove contaminated clothes.
• On eye contact: Immediately splash eyes with plenty of water. Consult Physician if irritation persists.
• Ingestion: Do not induce vomiting. Never give anything by mouth to an unconscious person. Call a Physician.

 

 

 

 

DURASUPALATE PC400 – Large water reduction with retention of workability, Micro-cracks in hardened concrete are reduced to minimum

Features:Large water reduction with retention of workability, Micro-cracks in hardened concrete are reduced to minimum

Application Area:

To obtain semi flow concrete especially in Miwan shuttering or in presence of dense reinforcements

Consumption/coverage:

0.40% to 1.50% by weight of cement

Packing:

In 250 kg containers

Short Description:

High grade hyperplasticiser with high-workability-retention property for hot weather concreting

Description:

It is a brown coloured liquid based on polyhydroxy carboxylate polymer. It is a new generation hyperplasticiser in aqueous dispersion. The special polymer structure makes it possible to add the silky effect of the lateral carboxylic chains to the dispersant effect of the main chain. DURASUPALATE admixed concrete at a recommended dosage is found to be extremely workable even with low W/C ratio as compared to control mix.

Technical literature: (click to view literature)