Smooth and sleek, Blu 80 mm Smooth is the perfect driveway paver to fit any modern home\'s exterior. Due to its 80 mm height, Blu is optimal for driveway use and paving any surface

Sep 01, You can color concrete black with metallic-oxide pigments or carbon-based admixtures. The color of carbon-based systems may fade, especially under exterior use. But

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This is a very common issue with leaky gutters. Water from the gutters drips onto the same area of concrete and eventually leaves black marks. This is dirt and materials inside the water, from

Oct 24, Our Top Picks. Amazon. Best KILZ 1-Part Epoxy Acrylic Concrete and Garage Floor Paint. Be Tough \'N Simple is a textured polished paint with a good working time

Mar 14, Allow the mixture to sit for 5 to 10 minutes to kill the mildew. Scrub the driveway thoroughly with the push broom to loosen the mildew. Then rinse the driveway with your

May 16, This premixed acrylic formula includes sand for a texture that matches the surrounding concrete. The color also blends in well with existing concrete. quick

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Dec 10, The Correct Concrete Water-to-Cement Ratio. Concrete mixers recommend a ratio of using 6 gallons of water for every bag of cement added. This is the maximum ratio, however, so it is important to observe your mixture while you add the water it may require less than that. This is important to note in light of

A. There are some companies that make tinted black concrete sealers for driveways and parking lots such as yours. Some sealers penetrate into the concrete and don\'t wear off as easily as topical sealers. This is the kind of sealer you want. HC Concrete Products makes a tinted concrete sealer like the one you are looking

Common reasons for concrete turning black are trowelling too much (known as trowel burn) and inconsistent water ratio in multiple concrete batches used in the same project. Other causes could be uneven curing and the use of calcium chloride (de-icing salts, e.g.). Some black discoloration can be removed while others

Mar 14, The black growth is cyanobacteria that feeds upon limestone (calcium carbonate) which is also used in asphalt shingles that develop the same black stains. Your driveway needs to be cleaned before treating it with a silicate densifier which will react with the calcium carbonate to permanently stop the carbonation

Oct 05, These are designed to simply be troweled, sprayed, rolled, brushed, (whatever) on existing concrete. Although these can be tinted, the real black effect comes from the use of their MiraStain I product on the microtopping. Then seal with one of their 10 different sealers. Log or create an account to post a comment. Sign up Log

Sep 01, So using either of these black aggregates could raise the cost of the concrete to per cubic yard. As a cost-saving alternative you might consider dry-shake colors, which cost about per square foot of concrete. Manufacturers say that dry shakes-mixtures of cement, fine aggregate, and color pigment-increase surface strength to about

The new blacktop on top of the concrete can be too high. This can cause water puddling and tripping issues where the blacktop touches other paving. The added two inches of blacktop might cause safety issues where the driveway abuts stairs and sidewalks. The added thickness of the blacktop can reduce the riser height at

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Starting from one end of the driveway, placing the timber horizontally across the slab, move it back and forth in a steady sawing motion to flatten out the concrete as you go. Use any excess concrete to fill in shallow areas as you go. Next, use a concrete float to smooth out the

One is a change in the provider of the cement mix. Cement mixes, although similar, tend to have naturally different colors. This can cause inconsistencies in the color of your cement project. Secondly, the usage of calcium chloride in an attempt to speed up the setting process of the concrete can lead to

If the concrete is in a basement, the black mold may be caused by a leak from outside or faulty plumbing. Homes with high humidity also tend to have problems with mould growing on surfaces as well. Outdoor concrete, such as a patio, usually grows mildew when it dry compley after been

May 26, When you see black spots on a concrete driveway, it could be mold, but it\'s just as likely to be algae. They aren\'t the same thing, but they\'re close. Mold is a type of fungus, while algae is a form of plant life. For the purposes of cleaning them off your driveway, the differences aren\'t great enough to matter. Video of the

1.58-in x 1.375-in x 25-ft one and three eights-in Black 25 foot Polyvinyl Concrete Expansion Joints. Model 3066. Find My Store. for pricing and availability. 2. Trim-A-Slab. 0.81-in x 0.5-in x 50-ft half-in Black 50 foot Polyvinyl Concrete Expansion Joints. Model

Jun 15, Specifically for black concrete, iron oxide ( Fe3O4) is generally used, found in nature as the mineral magnetite. When added to the concrete mix, the iron oxide particles encompass and coat the