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Faq - Dr Fixit

The Waterproofing Guide

When you are building a house, it is very important to undertake the necessary steps to prevent water leakages and seepage. Dr. Fixit is India’s leading brand in waterproofing and offers a wide variety of products and solutions to meet all your waterproofing needs from foundation to roof.

Dr. Fixit protects your home from persistent problems like dampness, peeling paint, flaking etc. The innovative and holistic waterproofing solution hence guarantees leak free homes !

Dr. Fixit also offers full technical support with a large pool of trained applicators. Get in touch to experience state of the art waterproofing for your new construction.

Building a house ?

What are the conventional methods of waterproofing?

Conventional methods of waterproofing are Brickbat Coba, Mud Phuska and Lime terracing. These methods are not suitable for modern day constructions due to various factors like inelasticity of the system, lack of skilled manpower etc.

Why is brickbat coba not a waterproofing layer for flat terraces?

Brickbat coba systems are rigid and hence inefficient on large terrace spans. These systems do not prevent cracks formed in concrete due to thermal expansion.

What are the modern ways of waterproofing?

The modern ways of waterproofing are Liquid brush applied solutions which can be bitumen based, acrylic based, PU based etc and Pre formed Membranes which are loosely laid or torched or self adhesive membranes. Please refer to the product link for more information on the individual solutions.

How do you give the slope in case of liquid applied membranes or Pre formed membranes?

After application of Liquid applied membranes and / or Pre formed membranes, screed in the required slope is laid on top of the waterproofing membrane. Please refer to the product link for more information on the individual solutions.

Can one give slope in the mother slab?

Yes. Slope can be provided in the mother slab itself.

Can the terrace be used for trafficable purpose after waterproofing treatment?

Yes. Depending on the type of waterproofing used the terrace can be used for low and medium foot traffic.

What are the waterproofing treatments recommended for damaged terraces?

Damaged terraces can be repaired without breaking them. Use Dr. Fixit Newcoat 3 coating brush applied solution. Please refer to the product link for more information on the individual solutions.

What are the different materials of waterproofing available with Dr. Fixit?

Depending on the type of waterproofing required Dr. Fixit has solutions with bitumen based, acrylic based, Polyurethane based etc. Please refer to the product link for more information on the individual solutions.

Why do we need waterproofing on a pitched concrete roof?

Pitched concrete is done in parts and it creates lots of joints within the slab. Chances of leakages increases from these joints. This calls for waterproofing to avoid leakages from these joints.

What type of waterproofing should be used on a sloping roof?

A system of brush applied waterproofing os recommended for sloping roofs. Refer Dr. Fixit Newcoat product link for more information. Also a self adhesive membrane can be used. Refer Dr. Fixit Samshield product link for more information.

What is terrace garden waterproofing?

>A landscape area requires to be watered regularly, with pesticides and fertilisers / manure, etc. For this a highly robust specification must be drawn up. In addition to this the load that it puts on a RCC slab will be extra, which has to be catered for in the design itself. Depending on the kind of vegetation being planned, the barrier membranes installed, must be able to mitigate root growth that can be very detrimental to the roof / balconies slabs and walls.

In case of Terrace garden, what is the overall thickness of the system?

The overall thickness of the waterproofing system will depend on the landscape filling. However waterproofing system thickness is 15-20 mm.

Is anti root waterproofing product /system required for terrace garden waterproofing?

Roots growing from the plantations on the terrace garden have the capability to penetrate and damage the waterproofing system. So it is recommended too do waterproofing of terrace gardens with anti-root systems.

What are the products / system recommended for waterproofing of the different areas of podium?

Podiums have multiple amenities like hardscaping, softscaping, swimming pools, club houses etc and require specialized solutions for each areas. Podiums also have to undergo constant stresses due to vehicle movements resulting in leakages from expansion joints etc. This calls for a seamless, tough waterproofing membrane which takes care of all areas. Please refer to the product link for more information on the individual solutions.

What are the recommended products / system recommended for water bodies such as fountains, swimming pools etc ?

Swimming pools and water bodies require specialized solutions. We recommend Dr. Fixit Fastflex for wet area waterproofing. Please refer to the product link for more information on the individual solutions.

What is waterproofing / Damp proofing of a basement?

Damp-proofing is usually done during construction to meet minimal building protection requirement. Damp-proofing is designed to 'retard' moisture penetration, not prevent it. Damp-proofing involves using bitumen emulsion or coal tar epoxy coating.

Waterproofing is required to prevent moisture seepage involving hydrostatic pressure bearing against the external. Foundation waterproofing systems are applied externally to the foundation, effectively preventing water penetration from seeping through the foundation.

What is positive / negative side waterproofing?

Fulll "tanking system" on the external side of retaining wall and raft with proper protection is positive side waterproofing. In case of absence of proper waterproofing from the positive side, repair work is done from the inside which is generally referred to as negative side waterproofing.

What are the different types of systems recommended for shallow and deep basement waterproofing? (Low and High water table areas)

No one system will work for all basements. It depends on many factors. Let us know a little more about your site ground conditions. 

In High water table areas, the foundation is under increased attack from hydrostatic pressure so it is very important to do everything that can alleviate the stress on the foundation walls. The best method for doing this is to install a preformed membrane with the protection boards.

In high rise buildings, with constraints in spaces in cities, car parking is under the podiums, sometimes in 2 storeys. Underground portions will always experience ground water, moisture migration from soil into the interiors of the basements, etc. The recommendation will for a very tough , highly elastomeric membrane that is sprayed on, but can develop very adhesion to the basement walls and floor in a few hours like, Dr. Fixit Extensa. Such an advanced system will give complete freedom from leakage .

Do you recommend any kinds of coating for basement waterproofing?

Coatings will not be able to withstand water pressure and sub soil aggression in high rise building basements. In such exposure conditions, cementitious coatings will get abused and fail, besides over a period of time the cement content in these type of coatings will eventually carry the water into the interior of the walls, working as a conduit for seepage, dampness and ultimately drip leakage.

Do you recommend waterproofing if no ground water is observed on the soil where the building is to be located?

Even if water table is very low, the soil moisture and surface waters may cause corrosion (rusting) on the foundation by time. Therefore, waterproofing should be applied on the ground slab and foundation walls.

What are the drawbacks of conventional waterproofing using shahabad stone?

While Shahabad stone in itself is non porus, the joints between the stones tend to crack due to constant hydrostatic pressure exerted from underground water table. Over a period of time this system lends itself prone to leakage. 

What are the disadvantages of conventional waterproofing system in the wet areas?

Bathroom is the most crucial part of a house or a flat in which there is running water all the time. Waterproofing done in bathroom area is not adequate and is only limited to the sunken portions of the bathroom construction. There is a lot of negligence in detailing on waterproofing in bathrooms. Apart from waterproofing, the pipes that are fit through the walls never bond with cement mortar or concrete, and hence need a method in which they permanently bond in the fitting & grouting process.

What is the ideal waterproofing system for wet areas? (Bathrooms , kitchen etc.)

A step-by-step process with the Dr. Fixit Bathseal System, ensures 100% leak-free bathroom.

Pipes portions that will be in contact with the walls, must be wrapped around with a two-sided tape that will adhere permanently both to the pipe as well as the grout. This detail will eliminate any water entry in the bathroom’s interior.

All holes through which plumbing pipes are fitted must be grouted properly, not with a cement-sand mortar, but with a free- flow, non-shrinking cementitious grout that will set and slightly expand in the gaps.

After this waterproofing should be done right upto the top of the ‘splash’ areas in bathrooms, if not upto its ceiling. A cementitious-acrylic membrane, applied in the walls and sunken portion is the best specification, as it is elastomeric and can stretch upto 50% that takes care of cracks in the area that may move.

This system can be applied to any wet area in the building such as wash areas, kitchens, overhead or ground water tanks, ground, etc.

What is the solution for external wall "Waterproofing"?

DF Raincoat is elastomeric and flexible in nature that accommodates thermal stresses and bridges hairline cracks that lead to seepages. It is tough and does not crack or peel off on aging like normal paints. Thus it resists water penetration effectively.

What is the difference between paint and coating?

Paints are 30-50 micron thick and are not thick enough to resist the wind lashing rains that can damage the paint film. Coating like DF Raincoat is about 110-120 micron thicker and tough enough to withstand the wind lashing rains.

DF Raincoat is not a paint. It is a coating and is more than twice thicker than the normal exterior paint.

Can Dr. Fixit DF Raincoat be applied over cement paint directly?

Not recommended. The existing cement paint should be removed as far as possible with wire brushing then washed to remove loose dirt/dust. Two finish coats of Dr. Fixit DF Raincoat be applied over Dr. Fixit Primeseal primer.

Can Raincoat be applied on textured walls?

Yes

What is the unique feature of Dr. Fixit LEC System?

  • A system which is Guaranteed for 25 years against water leakage directly from Pidilite
  • A system which can save approx 90% of heat gain / loss

How many layers are suggested in Dr. Fixit LEC System?

We have the following 6 layers / products in Dr. Fixit LEC System

  • Dr. Fixit Extensa (only if slab thickness is more than 200mm)
  • Dr. Fixit Foamshield
  • Dr. Fixit Newcoat
  • Geotextile
  • M20 concrete screed with Bituminous impregnated Filler Board and Sealant
  • Dr. Fixit Newcoat

What is the need of each layer?

  • What is the need of each layer?
  • Dr. Fixit Extensa: Provides protection from lateral moisture migration
  • Dr. Fixit Foamshield: Provides insulation and the main waterproofing layer for this system
  • Dr. Fixit Newcoat: To protect Dr. Fixit Foamshield from UV rays
  • Geotextile: To protect Dr. Fixit Foamshield from impact or abuse while pouring concrete
  • M20 concrete screed with Bituminous impregnated Filler Board and Sealant: Protective screed and also provides slope
  • Dr. Fixit Newcoat: Final protection layer. This layer can also be replaced with Dr. Fixit Heatshield if the requirement calls for SRI property.
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