Waterproof Concrete

What is the best way to waterproof concrete?

Waterproofing concrete should be considered if you are building a house or structure which will be susceptible to the elements. Concrete, while sturdy and durable, is also prone to breaking down over the years and will eventually crumble, if not protected correctly to start with. A structure must remain sound if it is to stand for many years. Waterproofing is a method by which the concrete is sealed from the elements and will have a protective barrier.

It’s a dream for everyone to have their own house. Even better than that, being able to witness the construction of the foundation of a house and to see that it is shaped in front of you. What can awaken you from this beautiful dream? What can transform this beautiful environment into a nightmare? Of course, waterproofing that made it wrong! This insulation is a must for a building. If a settlement is not sufficiently well insulated, this discharges the entire structure of a building, resulting in long-term problems affecting the overall construction life. If you’re looking for information to guide you through the procedures, products and procedures for the following types of insulation in the construction of your dream home, and if you are in search of an answer to the question of what is the best waterproofing material, continue reviewing this article!

At Hitch Property Constructions, we offer the best range waterproofing services to rectify your water issues. 

Concrete waterproofing – best methods and materials

Waterproof Concrete

Sheet membrane systems

Sheet membranes Cold-applied polymer-modified bitumen is a sheet membrane composed of polymer materials compounded with asphalt and attached to a polyethylene sheet. The polymer is integrated with the asphalt to create a more viscous and less temperature-sensitive elastic material compared to the asphalt on its own. These sheets are self-adhering and eliminate the harmful toxins typically associated with asphalt adhesion. They also increase tensile strength, resistance to acidic soils, resilience, self—healing and bondability.

Despite such advancements, disadvantages persist. Installation can be challenging as membranes require sealing, lapping, and finishing of seams at the corners, edges and between sheets. Additionally, sheet membranes must be applied to a smooth finish without voids, honeycombs or protrusions. As the membrane can puncture and tear during backfilling, protection boards must also be installed.

ln spite of all these drawbacks, sheet membranes have been the industry norm in waterproofing for many years — they still hold the majority of the market share. Their continued use is due to impact resistance, toughness and overall durability compared to other membrane options.

Liquid-applied membranes

Liquid-applied membranes can be applied with a brush, spray, roller, trowel or squeegee, and usually contain urethane or polymeric asphalt (hot- or cold-applied) in a solvent base. These membranes are usually applied on the positive side of cured concrete and have high elastomeric properties. More recent technologies have also made negative-side applications possible.

Successful waterproofing with liquid-applied membranes depends on the proper thickness and uniform application. They call for skilled, experienced labour to apply them, a clean and dry substrate —which can often be a construction environment challenge — a protection layer before backfilling, properly cured concrete to avoid problems with adhesion and blistering and, on horizontal applications, a sub-slab. Liquid-applied membranes deteriorate when exposed to UV radiation and cannot withstand foot traffic. The liquids themselves also contain toxic and hazardous volatile organic compounds (VOCs).

Although liquid—applied membranes work well on projects with multiple plane transitions, intricate geometric shapes and protrusions, they are typically only used when prefabricated sheets do not work.

Admixtures

For the past three decades, a new type of waterproofing has been used around the globe. These integral admixture systems are added at the batching plant or on-site and react chemically within the concrete. Instead of forming a barrier on the positive or negative side of the concrete, they turn the concrete itself into a water barrier. Integral concrete waterproofing systems can be densifiers, water repellents or crystalline admixtures.

Integral concrete waterproofing systems can be densifiers, water repellents or crystalline admixtures. Densifiers react with the calcium hydroxide formed in hydration, creating another by-product that increases concrete density and slows water migration. They are typically not characterised as waterproofing materials or repellents because they cannot seal cracks and joints. Concrete under hydrostatic pressure requires additional waterproofing methods to protect it from damage and deterioration.

Water repellents are also known as ‘hydrophobic’. These products typically come in liquid form and include oils, hydrocarbons, stearates or other long-chain fatty acid derivatives. Although hydrophobic systems may perform satisfactorily for damp—proofing, they are less successful at resisting liquid under hydrostatic pressure. Induced stresses cause cracking in any concrete, which creates pathways for water passage. So the effectiveness of water repellents is highly dependent on the concrete itself.

Crystalline admixtures

Crystalline-based systems typically come in a dry, powdered form, and can be added directly to the concrete mixer. Crystalline-based systems typically come in a dry, powdered form and are hydrophilic. Unlike their hydrophobic counterparts, crystalline systems use available water to grow crystals inside the concrete, effectively closing off pathways for moisture that can damage concrete. They block water from any direction because the concrete itself becomes the water barrier. The crystalline formula contains no VOCs and can be completely recycled when demolition occurs.

Additionally, crystalline admixtures offer installation advantages. Unlike traditional membrane waterproofing, which tends to be labour—intensive and expensive, crystalline admixtures can be shipped in dissolvable, palpable bags that are thrown into the concrete batch during mixing. This speeds up the construction schedule and decreases labour costs by combining steps

with the concrete placing.

Close-up of crystalline-admixture system. Integral crystalline waterproofing systems should not be used in applications under constant movement. During the crystallisation process, crystals align in a three-dimensional array that breaks when subjected to excessive movement. Areas that

require flexibility and face recurring movements- such as plaza decks or rooftops – would be better waterproofed another way.

Looking for the best waterproofing company? Look no further! Hitch Property Constructions has you covered. 

Elastomeric Coating

Elastomeric coatings are types of material that can respond to the question of what is the best waterproofing material in mind. The elastomeric coating material is a safe, durable and attractive way of protecting and protecting your concrete structure. They are applied in the same way as painting and priming. In this sense, it is easy to implement. You will need a suitable exterior primer to paint the concrete, and then the polymer paint will be applied to the top. The two coats need to be sufficient, and the polymer acrylic paint is also interested in gaps, small cracks and slight irregularities on the surface. The elastomer is a product with elastic properties and therefore reshapes itself according to the structure to which it is applied. This remains behind air and waterproof seal to protect concrete buildings for many years, regardless of temperature. It is possible to obtain good results with this material.

The elastomeric coating is a first-class exterior wall or roof covering, which is about ten times thicker than the paint. It creates an incredibly thick but flexible coating that makes the exterior of a structure waterproof. In contrast to other types of coatings or paints, they can seal as thin as hair to provide an airtight and waterproof seal. It is suitable for use on surfaces such as plaster, concrete, walls and more. Elastomeric coatings can be used on walls as well as on roofs. The elastomeric coating is liquid when applied, it dries, hardens and binds to the structure, but as the structure underneath moves, bends and bends up. This material is movable, bendable and flexible. In addition to providing a waterproof protective coating to a structure, it also helps to protect the structure from damage. The elastomeric coating can be coloured in several different ways and maintains its colour for a very long time. For these reasons, it helps maintain the attractive appearance of the exterior of the building and prevents damage, wear and tear to appear less attractive. For people who want to buy a building for investment purposes and want to sell it according to the market value, it is important to use the materials that will keep the building fresh and new for a long time and will save money in the long term.

Silicone Sealant

Let’s talk about another product which can be evaluated by those who ask the best waterproofing material. 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. It is a material that can be used during pearl works and detailed waterproofing. Silicone or polyurethane sealant will work very well, such as the renewal of concrete structures that are already protected. So you can use a silicone filler when making a colour correction while making a house renovated or after rough construction. The sealant may be applied using a spraying method, or it may be extruded with a normal paint roller. Silicone sealant is the best waterproofing material, and it is the choice of those who are looking for a nuanced answer.

The silicone sealant is a liquid adhesive form. Typically, it looks like a gel. It has a different chemical structure than other organic polymer based adhesives. Unlike other adhesives, the silicone keeps its flexibility and balance at both high and low temperatures. Also, the silicone sealant is resistant to other chemicals, moisture and weather conditions. This reduces the likelihood of failing to create and repair objects.

In contrast to some adhesives, silicone sealants are the substances that must be used. The cured silicone provides drying. Using silicon is not necessarily difficult, but requires patience. The temperature should be between 4 ° C, and 37 ° C and the silicone hardening should be between 5% and 95% humidity. It may take up to 24 hours to harden, or it may take several days if the sealant is particularly thick. Therefore, it is a material that requires patience.

How to Waterproof Concrete Surfaces

Step 1: Clean and Prepare the Concrete Surface

These essential steps get the concrete ready to accept the waterproofer; don’t skip them!

  • If necessary, protect your walls with a plastic sheet. Sweep the concrete thoroughly with a push broom to get rid of dirt and debris. Then thoroughly sweep it a second time. You’ll be surprised at how much dust gets left behind in the first sweeping!
  • Make sure the concrete is completely dry. Pour the cleaner/etcher into a large watering can. Sprinkle the cleaner/etcher on the surface and leave it on for 10 to 20 minutes.
  • Scrub the surface vigorously with a long-handled scrub brush. If the cleaner/etcher begins to dry as you work, mist it lightly with water to keep it wet.
  • After scrubbing, hose down the surface thoroughly to rinse it, but don’t let the rinse water go down a storm drains.
  • If desired, use a squeegee to push water off the concrete, then let the surface completely dry, at least overnight (24 hours is better).

Properly prepared, the surface should feel like medium-grit sandpaper. To achieve this on stained concrete or concrete that has a smooth, dense finish, you may have to apply cleaner/etcher more than once. After the surface dries, there should be no residue or lose concrete—run your finger lightly on the concrete, and if it comes away with dust on it, rinse again.

Step 2: Apply Waterproofer/Sealer to the Concrete Surface

Depending on the porosity of your concrete, a gallon of waterproofer can cover 250 square feet.

  • Pour some waterproofer into a large painter’s tray. If you’re sealing an indoor area, use the paintbrush to apply a sealant to the floor along the edges of the walls. That way, you’ll avoid touching the walls with the roller in the next step.
  • Apply the sealant to the roller from the painter’s tray, loading it fully. Roll it onto the concrete, saturating the surface completely. If the sealer puddles, spread it to drier areas.
  • Let the first coat of sealer dry.
  • If your product requires a second coat, roll it on in the opposite direction from the first coat to ensure even coverage.
  • Allow the sealer to dry and cure. Most sealers require 24 to 48 hours to cure.

Step 3: Concrete Surface Aftercare

Check the product for specific drying directions, but in general, you should wait at least three days before allowing heavy foot traffic onto the sealed surface, and 14 days before driving on it. Wait 30 days before cleaning with a mild floor-cleaning detergent and mop.

Areas that receive heavy traffic may need to be touched up annually. You may need to reseal periodically, depending on the type of sealer used and the amount of wear and tear the surface receives. You can tell it’s time to reseal if water soaks into the concrete instead of beading on its surface, and if the concrete looks scratched, dull, or dirty. Acrylic waterproofer lasts one to three years. Epoxies, polyurethanes and polyaspartics can go five to 10 years between applications. Penetrating sealers may never require a reapplication.

We have a huge range of waterproofing services Melbourne at Hitch Property Constructions that offers stress-free services for any water problem you got! 

Which Waterproofing Material Should I Choose?

The best waterproofing material is the answer to the question which can answer the question. So, how do you choose the best in your construction? Are the best waterproofing materials for you the most expensive? Of course not! You have to consider many elements in the region where construction takes place.

You will be able to select the best waterproofing materials for your individual needs by understanding what kind of materials you want to waterproof. Wood, concrete and bricks require different waterproofing materials to make materials waterproof. To select the appropriate waterproofing chemical, you will need to determine the density of the water to pass through the surface or the amount of water traffic on the surface of the material you want to be waterproof. One of the most important features that determine water traffic is the climate of your region. Is there a lot of rain or less to build your house? Is the change between the temperature differences too big, i.e. is it changing too much from cold to cold or is it the same? Was the place where the house was formerly a river bed or a rocky area? Is moisture seen elsewhere in the apartment? Performing a feasibility study through such questions will guide you to choose the most accurate waterproofing materials.

The type and method of applying waterproofing materials generally depend on the type of application you perform. While the initial applications routinely require several types of waterproofing types, annual applications may require partial, spot or complete reapplication of the product.

If you are applying the first application of waterproofing materials, you should look for a product that can be applied to several different materials. Wood, concrete and brick surfaces can all benefit from waterproofing. You can save time and money in practice by choosing a product that will allow you to use the same waterproofing materials on every surface of your home.

When selecting your waterproofing material, the length of time required to ensure the best protection, the duration of the application, and the number of applications should be taken into account. You may also want to find a material that will not harm or damage plants and animals. If you have children, you will want to find the best waterproofing materials that are safe for children.

At this point, it is important to consult a specialist to find the right waterproofing material. Of course, you should do a preliminary study. You should learn about the subject. However, you can also get advice from experts who are experts in the field and have proven themselves with the products they use.

Scroll to Top