Yes, concrete sealers do penetrate concrete. However, the type of sealer and the porosity of the concrete surface will affect the amount of penetration. Spraying, rolling, or brushing a sealer onto a concrete surface will cause the sealer to penetrate into the pores of the concrete surface, usually up to 1/8” deep.
Sealers with a wax content may provide a surface film but not penetrate the concrete. A penetrating sealer works by filling the spaces between the cement particles, creating an integral, invisible barrier that resists water, oil, and chloride ion intrusion.
This integral barrier also helps to reduce efflorescence, freeze/thaw damage and dusting.
How long does penetrating sealer last?
The longevity of a penetrating sealer will depend on a variety of factors including the type of sealer used, the environmental conditions, and the frequency with which the sealer is maintained. Generally, a high-quality penetrating sealer should last anywhere from 1-3 years depending on the above-mentioned conditions.
However, some sealers may last even longer if applied correctly and properly maintained. To ensure the longest life possible from a penetrating sealer, it is important to follow all product instructions, use high-quality materials, and clean and reseal the sealer as needed to maintain its durability.
Should I use a penetrating sealer?
Whether or not to use a penetrating sealer depends on what kind of surface you’re trying to seal. Penetrating sealers are primarily used on porous surfaces, like concrete and brick, which absorb liquids and are prone to staining.
They can keep these surfaces from absorbing liquids, making them easier to clean.
However, depending on the surface you’re trying to seal, you may need to apply a film-forming sealer instead. These sealers create a layer of acrylic or epoxy over the surface that shields it from dirt and other substances.
This type of sealer is typically used on shower walls, decks, tile, and other surfaces that are very susceptible to staining and too porous to clean.
It’s best to consult a professional to determine which type of sealer is best for your needs. They can assess the surface, recommend the right type of sealer, and provide instructions on applying it correctly.
What is the product to seal concrete?
The best product to seal concrete is a silane- or siloxane-based water repellent sealer. These sealers penetrate deep into the concrete and form a water-resistant barrier that helps protect concrete from deterioration caused by water absorption.
Silane and siloxane sealers are clear and non-yellowing, and can be applied to both interior and exterior surfaces. They will not change the color or texture of the concrete, while enhancing its strength and durability.
These sealers will also make the surface easier to clean by reducing the amount of dirt and grime that gets stuck to the surface. Additionally, they can reduce damage caused by freeze-thaw cycles and the effects of chemicals and de-icing salts.
What happens if you put too much sealer on concrete?
If you put too much sealer on concrete, it can cause different types of problems. The excess sealer on the surface of the concrete can create a slippery surface, which can cause people to fall and get injured.
The excess sealer can also trap moisture, which can cause the concrete to deteriorate and crack over time. Additionally, the sealer may not be able to properly penetrate into the concrete if it was applied too thickly or if the concrete was not properly prepared prior to application.
This can cause the sealer to flake off and/or create an uneven and patchy appearance. Finally, the excess sealer on the surface of the concrete can create a hazy or cloudy look, which can diminish the overall look of the concrete.
Can you remove concrete sealer?
Yes, it is possible to remove concrete sealer, but it can be difficult depending on how long it has been in place, how thick the application was, and the type of sealer used. The most common approach to remove concrete sealer is to use a pressure washer and an appropriate chemical stripper.
High-pressure and chemical pressure washing helps to break down any sealers that have been applied, allowing for easier removal. It is important to note, however, that this approach can be a labor intensive process, and that it should be done using appropriate safety precautions, as high-pressure water can cause potential damage to the concrete surface.
Additionally, for maximum effectiveness, the pressure of the washer should be properly set. If it is set too high, it can remove the underlying layer of concrete, while if it is set too low, it will not be able to effectively remove the sealer.
Additionally, the chemical stripper should be applied correctly, according to the directions on the product’s label. After the sealer has been removed, the surface should be thoroughly washed to remove any remaining residues, and then properly sealed.
Can you apply concrete sealer over old sealer?
Yes, you can apply concrete sealer over old sealer, however there are a few important things to consider. Before applying the concrete sealer, it is necessary to thoroughly clean the surface to ensure that dirt and other debris do not affect the performance of the sealer.
Additionally, you should check the old sealant to determine if it is still adhered to the concrete and there is no detachment. If there is any degradation of the old sealant, you should remove it and patch the areas with a concrete patch before applying the new sealant.
Once the concrete is cleaned and inspected, you can begin the application process.
How long do you have to stay off concrete after sealing?
It is recommended that you stay off of a newly sealed concrete surface for at least 48 hours after the sealer has been applied. After 48 hours, you can walk on the surface, but you should avoid heavy traffic or planting on the concrete for at least 7 days.
During the curing process (which can take up to 30 days, depending on the temperature and humidity), you should also avoid vehicle traffic, as it can cause divots or depressions in the sealed surface.
After the curing process, the sealer will be strong enough to withstand regular traffic and use.
When can I apply second coat sealer?
It is generally recommended to wait 24 hours after applying the first coat of sealer before applying a second coat. This helps ensure that the first coat has had adequate time to cure and dry. If the first coat is still not completely dry after 24 hours, it is important to wait until it is completely dry before applying a second coat.
It is also important to properly prepare the surface of the materials you are sealing to ensure proper adhesion and coverage. This can include cleaning, degreasing, and sanding the surface beforehand to ensure a smooth, even finish.
What is the longest lasting concrete sealer?
The longest lasting concrete sealer is a penetrating sealer. Penetrating sealers are made from a variety of materials such as silanes, siloxanes, and silicates, as well as acrylic resins and polyurethanes.
These sealers penetrate deep into the concrete, forming a water-resistant barrier that will resist wear and tear for years. Generally, penetrating sealers last between 5 and 10 years, depending on the specific sealer and how well it was applied.
One example of a quality penetrating sealer is Ghostshield Siloxa-Tek 8500, which is made of siloxanes and silane and is designed to last up to 15 years.
How many square feet will 5 gallons of concrete sealer cover?
The number of square feet a 5-gallon pail of concrete sealer will cover depends on the type of sealer being used and the application method. Generally speaking, if the sealer is applied with a roller, 5 gallons of sealer should provide coverage for up to 600 square feet, while a sprayer application should cover around 800 square feet.
If the concrete is especially porous or uneven, a thicker application may be needed and the coverage area will be reduced accordingly. Be sure to read the product label carefully to check the coverage information and application instructions for the specific product you’re using.
Is water based concrete sealer any good?
Yes, water-based concrete sealers can be a great choice for protecting your concrete surfaces. They are an excellent option for a variety of projects and are very easy to apply. Water-based concrete sealers provide superior protection against stains, dirt and moisture.
In addition, they offer excellent durability and are often more affordable than other types of sealers. They are also low in VOCs, making them a more environmentally friendly option. Water-based concrete sealers can be used for a variety of indoor and outdoor surfaces, and can even be used on driveways and patios.
Ultimately, water-based concrete sealers are a great choice for protecting your concrete surfaces and improving their overall life span.