On 8/6/2015 5:34 AM, wrote:
Last summer I put in a small patio, using 16" pre-cast blocks. I put
sand under the blocks, and it's remained pretty level. But due to it's
location, I have had muddy water run across it after heavy rain. I'm
presently working on installing some drainage pipes for rain water.

But the reason for posting this is because there is grass and weeds
growing between the blocks
Any tips????

Laticrete Paver LinkLocking Sand - Grey Color

Secure your pavers in place with Paver Link Locking Sand from
Laticrete. Specially designed for wide joints, this revolutionary
brush-in joint filler is seven times stronger than traditional
polymeric sand. To use, simply open the pail, disperse the product and
brush into the joints to get a safe and strong bond. Since the locking
sand sets hard when exposed to air, it requires no water, skilled
labor, tools or cleanup.

Grey Color
7 times stronger than polymeric sand
For joints ¼" or wider
Air Cured - No watering required
No washout
Helps prevent weed growth and joint erosion

http://www.menards.com/main/building...79936368323347

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GST International Lock 'N Seal Concrete Paver, Sealer and Joint Sand
Stabilizer - 5 gal.

The GST International Lock 'N Seal Concrete Paver, Sealer and Joint
Sand Stabilizer is designed specifically as a penetrating sealer for
interlocking paving stone installations. It gives superior protection
against stains while providing a flexible, water-resistant bond that
inhibits potential water damage to the joints and paver system.
Sealing the space between the pavers with Lock 'N Seal reduces the
permeability of the sand joint, which inhibits weed growth and ant
mines. Lock 'N Seal enhances, brightens and beautifies the natural
beauty and color of the pavers while improving durability and
resistance to fading. This product can be applied immediately after
paver installation. It will resist most stains up to several days, but
oils and solvents should be wiped up immediately following a spill.
This product is VOC , EPA and OSHA compliant, water-based and
UV-resistant, making it the ultimate concrete interlocking paver
sealer and joint sand stabilizer.

Bonds and locks down joint sand
Repels oil, grease and radiator rust stains
Inhibits weeds and grass between pavers
Resistant to UV and acid rain
Recoatable and fast drying
Enhances color without darkening
Eases sweeping and cleaning
For use on shopping centers, seaport installations and
interlocking concrete pavers
Also for use on unglazed tiles such as Saltillo, paving stones,
masonry brick and natural stone

http://www.menards.com/main/building...79936368323347