what is the best product to use between slabs so weeds do not grow through?

Answer 1

Either lift them and put down a membrane, or point the joints with Polymeric sand, which will not allow weed growth to establish. Better still do both!

Answer 2

Weed barrier. It lets the water through but the weeds cant grow through it. Any of the brands are good and easy to put down too. I have used it under rock around the pool. Under a brick side walk. Sometimes you will still get a few weeds the grow in between. Its not that they are growing through it that there is some mud or Debris between the slabs and its enough for the little bugger to grow in. They pull out very easily because they are on the top.

Answer 3

If you are talking about concrete slabs, I would not use salt. Salt causes the concrete (and black top too) to break down. Sooner than you think you will begin to have rubble.
use traditional weed killers and keep the area clean. Don't let dirt and dust pile up in there because the weeds will use that to establish themselves.
You can also try putting sealer down in between the slabs if they have begun to crack.

Answer 4

An expert told me that grass will grow between flags, on chimney pots, on the crack that runs between the garage and the house, but not on lawns.
Seriously when laying slabs the secret is to put down plastic sheeting just below the flags, plant life is stifled.

Answer 5

call builders supply stores that sell concrete pavers (not lowe's or home depot) we use a material on our concrete and paver patios and even flagstone side walks called polymeric sand or polymer sand
it has a polymer glue in it that hards when misted down with water, the glue is actually plastic polymers that flex when the ground moves during freeze/thaw It prevents weed seed from growing in the patio and will not wash away.
it costs about $20-$25 per 50 lb. bag
you will have to round up the weeds and remove the dead parts first before applying sand

if you supply the part of the state you are in i can search for a dealer in your area

Answer 6

There are several vegetation killers on the market. All work well. But, they tend to get washed where you don't want dead vegitation, like the lawn or plants.
I use a propane torch and burn the weeds away when they pop up. It doesn't prevent future weeds but it gets rid of everything. So no dead weeds are laying there and nothing to clean up.

Answer 7

If practical, lift flags and lay some fleece membrane underneath(Terram is a heavy duty brand used under commercial paving.) then brush a sand into the gaps once flags are relaid. It is the only permanent solution and being fleece, it's porous so your patio etc. won't flood. Good luck

Answer 8

The BEST product is any product for Poison Ivy or Oak.I sold herbicides at Lowes and they are the strongest products to kill ANY vegetation.Also,'Ground Clear' by Ortho is very good too.

Answer 9

Round Up works very well in cracks of sidewalks, slabs, etc.

Answer 10

Mix 2 parts soft sand with 1 part cement and point them. keeping the measurements as exact as possible means the colour will be the same if you have to mix more. Thats what my boyfriend says!