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April 7, 2020   
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Search results for category "Miscellaneous".
Found 5 question(s). Displayed from 1 to 5 question(s).
Question 1     June 13, 2007

Category:  Miscellaneous

Subject:  installing brick or pavers over asphalt

what do i use to attach brick or pavers to asphalt?

We don’t recommend installing concrete pavers over asphalt. The reason is that asphalt cracks and heaves in severe “Freeze-Thaw” climates and will cause pavers to crack and fail due to point loading. (Heaving of pavers over a period of years will cause the sand between the pavers to migrate either out of the joints or under the pavers.) When Concrete Pavers rub together they will spall and crack (without sand between them.) We will not warranty our pavers when installed over concrete or asphalt.

If you must install concrete pavers over asphalt, we recommend that they not be adhered to the asphalt but put on a sand bedding course. The existing asphalt should be covered with a landscape filter fabric first and then the sand bedding placed on top of the filter fabric. The filter fabric will help to retain the sand under the pavers in case the asphalt develops cracks, which would cause the sand to migrate out from under the pavers. You will change your finished grade height and will need to use an edge restraint system around the perimeter.

Moderator 4
Replies: NO
Question 2     April 29, 2007

Category:  Miscellaneous

Subject:  installing pavers over concrete pool deck

i was wondering if pavers could be installed over an existing pool deck. i have the clearance at the outside doors to raise my patio enough for pavers. the pool deck has drains in it and the existing concrete slopes to these drains. i was thinking of removing my existing pool coping, raising the bond beam and installing another row of tile to the pool and then install pavers over the top of the existing pool deck. what do you think?

The site conditions seem ideal. It is important to allow for 1/2 to 3/4 of an inch of washed concrete bedding sand beneath your pavers to allow for moisture to traverse beneath the paving stones. Otherwise you will end up with potential moisture build up that could possibly cause efflorescence and/or ponding that could cause mold or mildew.

If the site conditions and the existing concrete slab allows for ample drainage, you should be fine. It is also very important to lay geotextile fabric atop the slab before installing sand so you do not loose your bedding sand in any voids, cracks, or drains in the concrete slab itself. You will need to allow for drainage along any edge of the slab where water leaves the concrete slab by "running off" so that water isn't trapped along an edge of the concrete slab.

Best of luck!
Moderator 7
Replies: NO
Question 3     March 04, 2006

Category:  Miscellaneous

Subject:  Accent Wall

I have a unilock patio already, I'm thinking about putting a accent wall at one end of the patio. Can I put the wall on top of the exsisting edge of the patio or would that be to much weight on patio and cause it to be uneven?

Thanks for your advice


Yes putting the wall on top of the exsisting edge of the patio would be too much weight on the patio and will cause it to be uneven and even crack. Please refer to our "Retaining Walls" links/pages for detailed installation techniques.

Moderator 3
Replies: NO
Question 4     February 07, 2006

Category:  Miscellaneous

Subject:  Pavers

Yes, this is conceivably possible to accomplish. You may also want to consider some thin-brick interior paver applications that are very suitable.

Visit these 2 websites to see some possibilities:

Moderator 5

Can brick pavers be used as a floor inside a house as in the kitchen? If so, would you thin set and grout like regular ceramic tile? The house is on a concrete slab.
Replies: NO
Question 5     February 03, 2006

Category:  Miscellaneous

Subject:  Paver Pool Coping

I would like to use 14" x 14" Mega-Bergerac Squares as a pool coping. What material do I use to secure the pavers to the pool beam, which is shotcrete? What should be the joint width? Finally, what material do I use to fill the joints? Thanks.

There are several methods to affix the Mega Bergerac to your pool coping.
You can use an outdoor thinset. The thinset will bond the MB to the coping,
while at the same time it will be used to level the bond beam from side-to-side.
You will want to shoot elevations using an optical transit level or a laser level.
Start at the highest point of the bond beam and work your way around. Re-check at all corners or every 12-15 feet to make sure you are level.

There is another method used in installing coping. Once again you will be starting at the highest point on the bond beam. Use bender boards, which comes in 2"X10' X1/2' thick. Using a Hilti or Remington fastening tool you will attach the boards to the sides of the pool. Typically, you will use a # 3 load with a 2 1/2-inch long nail with a built-in washer. This combination will allow the nail to be shot in far enough to hold the board securely and, at the same time part of the nail will be out, which is important to make removal easier.

Two people will make this part of the job easier. Check for level at all corners or every 12-15 feet. Next, mix up type S mortar and install behind the board. The mortar will be used to make the bond beam level side-to-side. I suggest you add a slight pitch front to back. The mortar will need to be worked to your desired pitch after it has started setting up. After the mortar has dried for 24-hours use an epoxy or adhesive to hold the coping in place. After the coping is in place you can remove the nails and boards.

The joint width is a personal preference based on asetics. MB can be placed tight against each other, assuming it is a straight run. A serpentine pool edge may require cutting of the pavers to ensure a uniform gap. A gap should be no more than 1/2-inch wide between the units. A mortar, type S, is used to fill in the gaps The joints are usually recessed, AKA struck, to highlight the units. If you choose not to mortar the joints and butt the units tight, I recomend the use of polymeric sand on those units. Also, I would use polymeric sand on the enite deck if it is pavers.

Rex Mann (Moderator 5)
RM Stonescaping
Replies: NO
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