How to Remove Asphalt Sealer from Concrete

How to Remove Asphalt Sealer from Concrete

Firstly, it has to be admitted that you have got yourself a task – but we can look at how to remove the asphalt sealer that has been applied or spilled on concrete, because whilst difficult, it isn’t impossible.

There are specific chemical products available on the market which are designed to do exactly this, but it isn’t an easy fix and requires hard work!

As with all jobs you could hire in a professional contractor, but this guide will help you to undertake the work yourself if you have Asphalt Sealer on Concrete and you would like to get rid of it.

What does Asphalt Sealer do?

The entire purpose of the application of Asphalt Sealer is to create a seal on the Asphalt which is impervious to water, spills, and chemicals.  That’s the bad news.  The good news, of course, is that you can, with effort, remove the asphalt sealer from your concrete using the right product.

What do I need to remove the Asphalt Sealer?

You must understand that this is not a five-minute job, so initially, you need time, at least half a day to do a good job in a reasonably sized area.  You also need to source some chemical stripper and ensure that you have the right tools on hand to complete the task once you have started.  Measure the area that you intend to treat carefully, allow for two coats if it is heavily affected, and ensure that you have enough chemical on hand to treat the entire area in one go.

Protective Equipment:

When working with any chemicals always, always, read the manufacturer’s instructions and their safety guidance – this is such good advice and cannot be repeated often enough, if you are using a product for any job at all, read the instructions.  This is no time to charge ahead.

The recommended minimum protective equipment for any job involving a chemical application such as this would always be to wear;  rubber gloves, boots, safety goggles, and a mask, but check on your specific chemical container for product-specific advise, then follow it.

Have a Clean up:

Always ensure that the area you are working on is clean.  Sweep it thoroughly, or use your yard hoover.  If the area is small enough it’s worth wiping it clean with a damp cloth to remove the last traces of dust and rubbish.

Apply the Chemical Stripper:

Being very careful to avoid spills and splashes apply the chemical to the affected area.  If it is a large area then pour onto the surface, and then spread using a broom or similar.  For a smaller area then a small brush will suffice.  Be very careful not to apply too much and cause run-off.  The Chemical will need a thin, even application, and must only be applied to the area where you are looking to remove the asphalt sealant.

How long should it take?

A very general recommendation would be that your chemical must be left for fifteen minutes.  As with any job that involves a product though, be sure and read the instructions on your particular brand and make sure that you follow their instructions – that always gets the best results.

The hard work starts:

Using a paint scraper start to manually remove the softened sealant.  Be careful to avoid splashes, collect the scrapings carefully for approved disposal, and work on small areas at a time.  The chemical stripper should come up along with the sealant beneath.  If the Asphalt Sealant layer is too thick then you may need to repeat the application of the chemical.

Wash it down:

Once you are sure that all of the chemical and sealant have been removed and that you have a clean concrete surface then wash it down using your hose using the shower attachment.  To avoid any run-off contamination please do ensure that you have thoroughly completed the previous step first.

Scrub it clean:

You need to really clean the area thoroughly before you can call the job finished.  Add 50% warm water and 50% detergent or all-purpose cleaner and scrub the entire area with a yard brush or hand brush.  This cannot be hurried, the area should be scrubbed thoroughly – the recommendation is usually around 10 minutes.

Rinse again…………. And again

Using your hose and shower attachment rinse the area again, and then again for good measure.  You want absolutely no residue left on the concrete at all because it will interfere with any other product, finish or sealant that you intend to use in the future.

How to Remove Asphalt Sealer from Concrete
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