Driveway question - Snowblower Forum : Snow Blower Forums
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post #1 of 13 Old 03-15-2015, 08:28 AM Thread Starter
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Driveway question

Does asphalt driveway sealer does anything for the asphalt or is it just cosmetic?
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post #2 of 13 Old 03-15-2015, 09:15 AM
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I think it's supposed to keep moisture from getting under the pavement. Moisture causes frost heaves, cracking from the heaves and and eventually chunks of tar falling out.
I don't seal my driveway due to its size, (475 ft), and its still in great shape after 15 years. So, it can't hurt, but, it's not totally necessary either, in my opinion.
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post #3 of 13 Old 03-15-2015, 09:38 AM
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I think it's supposed to keep moisture from getting under the pavement. Moisture causes frost heaves, cracking from the heaves and and eventually chunks of tar falling out.
I don't seal my driveway due to its size, (475 ft), and its still in great shape after 15 years. So, it can't hurt, but, it's not totally necessary either, in my opinion.
Dave
I live in mass too and have my buddy seal mine every 2/3 years. He's been in the business for about 20 years. In addition to sealing, he has a machine that melts these rubber blocks and fills in the cracks as well. This keeps water from getting in and freezing and expanding. This is probably the most important part of the whole sealing process.

Our New England driveways take a beating with the weather. I think sealing can extend the life of the asphalt. I also do it because it looks nice when it's sealed.

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post #4 of 13 Old 03-15-2015, 09:38 AM
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When I had my driveway paved a few years back, I asked about sealer. He said to me, you don't see them sealing highways do you? So, I guess it's more cosmetic.

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post #5 of 13 Old 03-15-2015, 10:09 AM
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You see them coming along every few years and filling cracks in roadways and they do resurface them with a layer of hot liquid asphalt and stone.

They don't seal coat a street as it doesn't stand up to the traffic a roadway has to accommodate. A driveway is a different critter and the seal coating does help it last longer by sealing it and keeping the cracks from getting started.

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post #6 of 13 Old 03-15-2015, 10:53 AM
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There are different types of driveway sealers. Many of them are coal tar based, which is not good for asphalt. I use an asphalt based sealer and then only once every 4 or 5 years. Not sure about the newer latex based sealers.

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post #7 of 13 Old 03-15-2015, 12:36 PM Thread Starter
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The driveway is pretty much done, caving in everywhere, cracks, and so on. I'm now getting estimate on it redone 6" gravel 3" asphalt. Is sealing necessary on new asphalt, and one place told me sealing isn't necessary new or old it just cosmetic and today sealer don't seal it pretty much paint. The stuff they used in sealer isn't VOC compliant and is just used on airport landing strips not sure if it true or not. Thanks for everyone input so far.
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post #8 of 13 Old 03-15-2015, 10:02 PM
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Sealers or paint, looks good for a few months...winter will open up any cracks that you have. Guess this has to do with the asphalt shrinking because of the cold. I have pored gallons of crack sealer down the cracks..However, I will probably fill those same cracks this year...
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post #9 of 13 Old 03-15-2015, 11:45 PM
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Quote:
Originally Posted by snow miser View Post
The driveway is pretty much done, caving in everywhere, cracks, and so on. I'm now getting estimate on it redone 6" gravel 3" asphalt. Is sealing necessary on new asphalt, and one place told me sealing isn't necessary new or old it just cosmetic and today sealer don't seal it pretty much paint. The stuff they used in sealer isn't VOC compliant and is just used on airport landing strips not sure if it true or not. Thanks for everyone input so far.
If I had to have a new driveway it's be concrete. It'll be more costly but it will last way longer.

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post #10 of 13 Old 03-15-2015, 11:54 PM
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One guy who paves driveways told me it's just paint. Whether it stops water or not is irrelevant -- you will always have water underneath the surface, and it will move and heave causing your surface to crack. Tree roots can also be a contributor. If you go concrete the slabs will move in relation to each other. You can't chain Mother Earth.
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