Small concrete walkway stained using a water based stain. The color used was Taupe from Butterfield Colors. The concrete was sealed using a water based sealer to give a natural low gloss appearance.
Are you thinking about sealing concrete and are not sure what type of sealer to use? Sealing concrete can be a challanging task if you do not follow the instructions from the manufacture of the sealer and use the wrong concrete floor sealer.
There are two categories of concrete floor sealers:
- Penetrating types
- Film forming types
Each type of sealer is used in different situations depending on what you are trying to achieve when sealing the concrete floor.
If you are just trying to protect concrete from salt attack and water damage, the cheapest and easiest type of concrete floor sealer to use would be a penetrating sealer. This sealer is good for maintaining concrete and will help prevent the concrete from delaminating.
Penetrating sealers are not the only type of sealer that will help keep the concrete in sound condition; film forming concrete floor sealers will also help, but they will also add other benefits:
- protect the surface from scratching
- are better at resisting harsh chemical attacks such as acid (epoxies & polyurethane’s)
- will darken and bring out the colors in stained concrete
- can be used to change the color of concrete
Film forming sealers are a little more tricky applying then penetrating sealers. You must make sure not to over apply and cross roll so you do not leave roller lines. In hot windy conditions you will also need to make sure sections of the sealer are not drying, if you apply more sealer in those areas you will have lap lines.
Today we got called to seal concrete steps with a solvent based acrylic sealer. The concrete steps were recently poured (three months ago), and there are rust spots that are starting to show on the concrete surface. The rust spots are coming from the rebar in the concrete; most likely, the rebar is not being adequately protected by the concrete allowing water and carbon dioxide gasses reaching the rebar causing it to rust.
Sealing the concrete will help prevent the rebar from coming into contact with water and carbon dioxide. Over time the rebar will continue to rust and will expand causing the concrete to start to spall. Since the rebar is already rusting the sealer will only slow down the process. We recommend sealing the concrete shortly after pouring the concrete, and also properly surrounding the rebar with concrete to add protection from water and carbon dioxide gasses.
MVL Concrete offeres concrete repair and restoration services in San Antonio, Tx. If you are having problems with your concrete, give us a call at (210)422-6116.
Waterproofing concrete and other masonry surfaces will help prolong the life of the the structure. Water damages concrete by slowly eroding the surface of the concrete; a lot of times you can notice the larger rocks showing in an older concrete sidewalk because the top cream of the concrete has eroded away.
Waterproofing will keep the concrete looking like it first did when it was poured. Waterproofing concrete will help prevent concrete from eroding and becoming pitted adding time to the life of the structure. Waterproofing will also help prevent the rebar in the concrete from rusting which causes the concrete to start spalling off.
Any masonry surface such as: brick, stone, concrete, and cinder block will benefit from applying a waterproofing sealer.
MVL Concrete can help restore concrete and seal the concrete to help eliminate the harm done by water, we offer waterproofing service in San Antonio, Texas.
These concrete floors were ground down with a concrete grinder to expose some small aggregate in the concrete and then sealed with a polyurethane sealer. Concrete grinding and sealing is a great way to achieve a modern look inside a home.
In this video we are using a solvent based sealer to seal the acid stained concrete.
A great low cost alternative to acid staining concrete is to use a tinted sealer.
Tinted sealers are opaque, so any exterior surface stains that can not be removed from the concrete will be completely covered up with a tinted sealer.Tinted concrete sealers also waterproof the concrete which helps prevent surface spalls. They can be used on any exterior concrete surface.
The most important part of having a tinted sealer last, is prepping the concrete surface before applying the sealer. We always acid etch and pressure wash the surface so the sealer will have a rough surface soak in and bond to. The sealers don’t last forever, they typically have to be re-sealed every two years depending on traffic.
There are over 50 colors to choose from when using a tinted sealer and can have a matte finish or gloss finish.
Here is a photo of a recent concrete patio we sealed with a tinted sealer.
For more information check out are website at MVL Concrete.