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remarked

01:11PM | 12/04/02
Member Since: 12/03/02
2 lifetime posts
Bvlawn
We want to put in a stone (brick, pavers or other)patio. The chosen area is not flat and already paved with asphalt. Can the bricks or pavers be put directly on top of the asphalt and how do we do this? We want very much to avoid tearing up the asphalt. Any and all input is much appreciated.

bidou

06:32PM | 02/07/03
Member Since: 02/04/03
5 lifetime posts
First of all, let me say this: I owned a landscaping company for 10 years. I would never have left asphalt under one of my jobs…

Once way or another, you will have to add stone dust. Either on top of the asphalt, or once you remove it. Listen, I don’t recommend leaving the pavement. I know removing asphalt is a lot of trouble BUT, if you don’t, you will get into trouble in the long run. When the asphalt cracks and moves in a few years, I will offset all your pavers or interlock. I suggest you remove it and make sure you have a good base of at least 6” for a normal patio. If your putting lots of weight on it (i.e. a car), a 12” base is preferable. Remember, taking a short cute will only create many more problems…

bidou

06:37PM | 02/07/03
Member Since: 02/04/03
5 lifetime posts
sorry, a few spelling mistakes:

1) that's "one way or another" and

2) and moves in a few years, "IT" will offset...

3) short cut...

Cheers.

remarked

07:45AM | 02/09/03
Member Since: 12/03/02
2 lifetime posts
Thanks for your response. I suspected as much. But my husband refuses to remove the asphalt. He says that the stones, bricks,or other will not be in cement(or otherwise permanently attached to each other or the asphalt) and the asphalt has been there awhile(we bought the place in 1999 with asphalt in place and the house was built in 1920)and not cracked. Is there a way to do this on top of the asphalt or other alternative or will we just be sorry? Any suggestions or advice you have will be greatly appreciated.

He just walked in and added this reasoning: the asphalt will act as the base like hard dirt and sand will be put on top of the asphalt. He has a hard smooth base with drainage already in place. He is very stubborn. Faulty reasoning or can it be done somehow?

Your help is appreciated. And don't worry about spelling.

[This message has been edited by remarked (edited February 09, 2003).]

[This message has been edited by remarked (edited February 09, 2003).]

treebeard

03:19AM | 02/10/03
Member Since: 01/14/03
265 lifetime posts
An asphaltic base for precast concrete pavers, brick pavers, and other types of unit pavers is a common, even if not highly favored, method for base construction in the engineering/landscape architecture/ architecture business. It has it's place for large open high traffic spaces on a commercial level, but it's not usual for residential applications, usually due to cost. But that's looking at it from a "design of new construction" point of view. When designed properly, the slope of the asphalt surface provides proper drainage for water that infiltrates through the sand or stone dust base used between it and the pavers. Without that drainage, in areas where winter temperatures are a fact of life, water in the sand or stone dust base will freeze and lift (heave) the pavers, requiring replacement and resetting as necessary. The asphalt, in good condition, will provide a stable base, but it comes with it's own problems, drainage being foremost. Heaving of the pavers due to freezing between the asphalt and the pavers will be more of a problem than heaving, cracking, or settlement of the asphalt itself.

[This message has been edited by treebeard (edited February 10, 2003).]

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