FAQ: How To Patch Exposed Aggregate Concrete?

Can you patch exposed aggregate concrete?

The cement in a concrete slab usually holds the surface layer of aggregate in an exposed aggregate slab securely in place. An epoxy mix, combined with new aggregate, can provide the patch you need. With the patch, not only will you restore the appearance of your slab, but you‘ll keep the damage from spreading.

How do you fix patchy exposed aggregate concrete?

This uneven exposed aggregate surface needs to be treated with an acid wash. This is one of the few times I recommend an acid for a concrete repair. A strong acid wash should help even out the surface. Start with a muriatic acid diluted 1:1 with water.

How do I restore exposed aggregate?

The best way to clean oil and grease stains from your exposed aggregate driveway is to apply a driveway cleaning solution that will break down the oil. Luckily, you can make this mixture using household products like dishwashing liquid or baking soda.

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Should you seal exposed aggregate concrete?

Does exposed aggregate need to be sealed? Yes. These sealers—typically film-forming acrylic resins—can help protect against spalling, dusting, efflorescence, freeze-thaw damage, stains, deicing salts, and abrasion. A sealer will also enhance the color of the aggregate, accentuating its depth and richness.

Is Exposed aggregate expensive?

Yes, exposed aggregate concrete is more expensive – as much as double the cost of normal class concrete – simply because there is more labour involved in creating the finish – specifically brushing the concrete surface.

What is the best concrete sealer for exposed aggregate?

The two best types of exposed aggregate sealers are Silane-Siloxane water repellent sealers and acrylic sealers.

How do you clean exposed aggregate concrete?

Use a high pressure washer with hot water and a commercial-grade degreaser to eliminate oil stains. The hot water will help lift oil from the surface and the degreaser will emulsify the stain and allow it to wash off easily. Exposed aggregate cleaners can be applied on tire marks before rinsing it off with hot water.

Does Exposed aggregate crack?

Will my new Exposed Aggregate product crack? Like all concrete products there is always some risk of cracks occurring. We cannot guarantee it won’t crack due to subsidence and other variables. Although we do everything we can to minimise the chance of cracking by cutting control joins and using expansion foam.

Can I stain exposed aggregate?

Exposed aggregate can be stained or dyed to shift or change the color upon completion. Exposed aggregate is done by using a chemical retarder on the surface of the concrete during its placement. It is also a cost effective method of getting a decorative concrete finish.

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How soon can you wash exposed aggregate?

Depending on when you poured it and how wet the concrete was at that time, you generally need to wait roughly 10-24 hours for the core to harden. Do not wait to long to check, because the retarder and plastic cover can only keep the top from hardening for so long.

How do you remove exposed aggregate sealer?

The removal of old concrete sealer can be done in one of two ways: mechanical or chemical. The mechanical way involves using some kind of tool to physically grind, sand, or blast away the sealer.

Is Exposed aggregate cheaper than concrete?

Question: Is an exposed aggregate concrete driveway more expensive than a standard concrete driveway? Top Answer (90% of 44 votes): Yes. Explanation: Exposed aggregate is more expensive than standard aggregate because it requires more material expense and labor expense.

How long does Exposed aggregate last?

When people are considering the installation of an exposed aggregate surface, a primary benefit is its longevity. The average lifespan of an exposed aggregate driveway can be upwards of thirty years or more with the right care and preventative maintenance.

What do you seal exposed aggregate concrete with?

The best exposed aggregate sealer is a solvent based acrylic sealer. Use a ½” nap roller and coat one section of concrete at a time. If the concrete is broken up into squares due to the saw cuts in the concrete, coat one of these sections at a time to avoid overlap marks.

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