Waterproofing method for concrete slab | Dr. Fixit (2024)

With a redefined urban vision, India is rethinking the future of its residential and commercial properties and focusing on making them more energy-efficient and sustainable in the long run. While traditionally defined by historical and cultural influences, today, the country has adapted contemporary architecture and is rapidly paving the way for hyper-urbanization.

As you are aware, incorporating a new and revitalized urban landscape comes with its own set of challenges. Right from the start - conceptualisation and planning to execution - there are specific requirements that need to be met to protect the structural integrity and add life years to the establishment.

In new construction projects, a streamlined operation that improves efficiency is key, and choosing the correct waterproofing process will enhance its overall development. Collaborating with pioneers and experts from the industry, who provide the best waterproofing solutions, like Dr. Fixit, is the need of the hour.

What to keep in mind?

In our country, the construction of most roofs involves the usage of reinforced cement concrete or concrete slabs. Over years, these structures show signs of deterioration of matrix and corrosion of steel bars. Therefore, be it in residential or commercial spaces, roof waterproofing is of utmost importance when it comes to designing and executing damp-free and leak-proof structures.

What is roof waterproofing?

Roof waterproofing is the process of applying an impermeable material layer to concrete slabs to stop moisture from entering and making the building waterproof, allowing it to withstand constant exposure to damage and degradation.

Concrete slabs are permeable and pervious - they absorb moisture, waterborne toxins, and compounds that weaken the structure and cause health hazards. Moisture will penetrate via the capillary route generated by the osmotic effect if surplus water is not correctly swept out during the casting of concrete slabs. If it is not effectively cleared off, fine pores will be formed in the roof slab and each of them will be linked to one another.

The concrete roof slab system is also known as a flexural member. This system is weak under tension and can develop fissures and cavities as a result of thermal contraction, expansion and shrinking. Water will infiltrate through the gaps and pores as a direct consequence. One of the easiest and most efficient ways to seal the concrete slabs is by using Dr. Fixit waterproofing solutions with a diverse range of applicability for new constructions, and repairs and renovations.


What is the importance of roof waterproofing?

Over time, close observation of construction projects shows that roofs are commonly made of concrete slabs and they are subjected to external exposure at all times. Due to constant exposure to water, air and heat, thanks to the climatic conditions, the concrete slabs are subjected to cracks, moisture retention, and expansion. Therefore, the roof waterproofing process should be done gradually with precision.

As you are aware, concrete slabs are porous and retain water, waterborne pollutants, and chemicals. Due to the construction material’s property, it is essential to invest in a permanent roof waterproofing system if you want to safeguard your concrete and guarantee its longevity, retain your establishment’s quality, and structural integrity as well. Waterproofing minimizes the absorption of moisture which further prevents the formation of crevices or cracks on the structure.

Keep the following things in mind when choosing a roof waterproofing product: durability, bonding strength, drying time, UV resistance, and a good brand reputation.


Benefits of concrete slabs’ waterproofing process

  1. Improves durability and longevity of your establishment
  2. Keeps structural integrity intact
  3. Keeps surfaces damp-free and leak proof
  4. Cost-effective in the long run
  5. Energy-efficient and sustainable solutions
  6. Prevents health risks caused by mould and mildew

Best waterproofing solutions for you

With myriad options and techniques available in the market, you should choose the best waterproofing process based on the site's state and application capabilities.

Some of the traditional terrace or roof waterproofing treatments include Cementitious waterproofing, Liquid waterproofing, Bituminous layering and Crystalline admixtures.

However, foreseeing contemporary roof waterproofing requirements, Pidilite has developed and launched various technologically advanced products and treatment methodologies on positive and negative sides of surfaces, for residential and commercial properties in the country.


Energy-efficient process

Dr. Fixit LEC (Low Energy Consumption) systems is a synthesis of insulation and waterproofing solution for roofs. This process reduces heat gain through concrete slabs by more than 90%. It minimizes cracks and fissures on the surfaces by protecting them from thermal stresses, thereby making your building 100% leak-free. Additionally, it saves energy consumed by air conditioners.


Polyurethane Waterproofing Treatment

The PU system is a two-component UV resistant and modified polyurethane liquid that can be applied on a prepared surface with ease. This coating has exceptional crack-bridging properties, flexibility and durability, excellent bonding with concrete and construction materials. It also renders the substrate breathable, water-resistant, and weatherproof.

Pidilite developed products like Dr. Fixit PU Foam Injection, Dr. Fixit PU Plain Injection and Dr. Fixit Novolac Clear among others can be used for waterproofing concrete slabs on the roofs, floors, and basem*nts of residential and commercial properties.


Hybrid Polyurea Waterproofing and Coating System

The Hybrid Polyurea System constitutes a more recent and advanced waterproofing technology than the traditional ones used in protective coating applications. It is based on the reaction of an isocyanate component with an amine blend. As the reaction is rapid, within seconds, it requires specialized personnel and equipment to mix and apply this waterproofing methodology.

This system ensures ultra-fast curing of coating, chemical resistance, insensitivity to humidity during the application, thermal stability to temperature variation and good adhesion to substrates.

For this method, products from Pidilite’s Dr. Fixit can be used. Some of them include Dr. Fixit Hydrolastic PU, Dr. Fixit PU Roofkote and Dr.Fixit Newcoat PU Cool among other waterproofing commodities available.

In conclusion, as the structural strength of your residential and commercial properties are highly dependent on effective waterproofing solutions for your roofs, exterior and interior walls, and basem*nts etc., it is advised to consult experts in the field. Click here to get in touch with an expert from Dr. Fixit.

Waterproofing method for concrete slab | Dr. Fixit (2024)

FAQs

What is the best waterproofing for concrete slabs? ›

Silicone sealant is one of the materials that are effective for waterproofing. Silicone sealants can be effectively used to protect concrete and make it waterproof. Silicone also functions as a crack filler and sealant, which can be applied to cracks up to a quarter inch or 0.6 cm thin.

How do you use Dr Fixit on a concrete slab? ›

Start addition of 75–80% mixing water & mix for 2-3 minutes. Add Dr. Fixit WP Admix 1litre per 100 kg cement into the remaining mixing / gauging water, then add to concrete mixer & mix for another 2 minutes. Place the concrete or apply plaster, as needed.

What is the ratio of Dr Fixit to water for waterproofing? ›

Also, the recommended dosage is 10 liters of Dr. Fixit Pidicrete URP per 50 kg of OPC cement. That is, in the ratio of 1:1.5 by volume and application of 2 coats.

How effective is Dr. Fixit waterproofing? ›

The waterproofing solution was easy to use and non-toxic and convenient to handle. The product is worth for money and gives protection to the roof as expected. But it requires curing time during which it should not be exposed to heavy rain. easy to use, diy, 4 lit used for primer coat if around 500 sq feet.

How do you permanently waterproof concrete? ›

Concrete can also be protected against the water with acrylic, polyurethane, polyurea-based materials that provide waterproofing in areas that are exposed to direct water and sunlight such as roofs and terraces. All of these practices are applied directly to concrete surfaces.

Which Dr. Fixit is best for slabs? ›

The recommended surface areas of Dr. Fixit LW+ Super are RCC slab, concrete and mortars.

How long does it take for Dr Fixit waterproofing to dry? ›

Fixit Super Latex 302 is used to repair structural concrete, fixing or re-fixing slip bricks, tiles, stones & marble bedding, waterproofing and as a bond coat. Brush apply the 1st coat. Apply 2nd coat after 1st coat is dry approximately 4-6 hrs between two coats.

Which is the best waterproofing method? ›

Bituminous waterproofing. This type of coating is made up of a sticky, black, highly viscous liquid, bitumen, and solvents. The bituminous waterproofing method is commonly used for coating flat roofs, foundation walls, and concrete surfaces.

What is the mix for waterproofing concrete? ›

Water/Cement ratio: the best starting point for our waterproof mix is a concrete that is already dense, with minimum pores, so a low W/C ratio, less than 0.5, is essential for a good result. At best we should aim for W/C below 0.4.

Can we apply Dr. Fixit directly? ›

Dr. Fixit Dampguard is a unique & universal waterproofing treatment for internal dampness. You need not break the wall plaster to reach to brick level to waterproof it. It is directly applied to damp internal wall by brush and is very easy to use.

Which is better, Dr. Fixit or damp proof? ›

It is best to use Dr. Fixit Solyseal as a waterproofing barrier for foundations and plinth, which protects against rising dampness. It is easy to apply and also protects the structure against the chemicals in the soil.

What is Dr Fixit LW+ used for in concrete? ›

It is used as an additive for cement concrete, mortar & plasters. It makes concrete cohesive and prevents segregation. ○ Corrosion resistant - Makes concrete more cohesive, hence protects steel better against corrosion ○ Compatibility – Being a liquid, easily dispersible & compatible with concrete/mortar mixes.

Can you waterproof an existing concrete slab? ›

If a high amount of moisture is present in the concrete (over 3 lb according to a calcium chloride test) it is best to use a moisture vapor barrier coating. If the moisture content of the concrete is less than 4% you can use a penetrating concrete waterproofing sealer.

How do you keep water from coming through a concrete slab? ›

Sealers should be applied after pouring to help prevent water from coming into contact with the slab and provide protection against staining. The sheeting or membranes should be placed between the soil and the slab before the concrete is poured so that water does not come into contact with the surface of the slab.

What is the best liquid vapor barrier for concrete slabs? ›

Therefore, effectively protecting a structure's building envelope from moisture intrusion requires a high-quality liquid air barrier like Polyguard's Airlok® STPE Spray-N-Roll and Airlok Flex®. In addition, below- and above-grade walls require a high-performing air barrier (R402.

What is the best additive to make concrete waterproof? ›

Admixture NameMost Typical ApplicationRaw Product Shape
Koster NB 1Waterproofing of concrete structuresPowder
PENETRON ADMIXIntegral waterproofing for concretePowder
GCP BitutheneWaterproofing membranesMembrane
Mapei MapelasticCrack isolation and waterproofingLiquid/Paste
6 more rows
May 28, 2024

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