If you live in a wet climate like here in the Northwest you know how important it is to have a stable and secure walkway to enjoy your yard or garden. There is nothing worse than walking outside and ending up with wet and muddy shoes. Well, actually, what is worse is the response you get from your wife. With a good, firm walkway you don't have to worry about tracking in muddy footprints to the clean floor or carpet.
The installation of pavers in your garden path is a bit more complicated than a normal setting up if you live in a very humid climate. The trouble to be conquered is the water that can flood the base of the passageway during a heavy torrent. Follow these few instructions to cope with periods of heavy rainfall or a constant barrage of one to two inches daily if you want your travertine walkway pavers to last a long time.
The base material is the most central part of any walkway. This becomes even more significant when you begin to cope with heavy rainfall and groundwater. The solution is to construct a base which will allow the water to flow away and not flood beneath the pavement hence allowing them to move when walked on. Crushed rock or stone is the perfect material for the base, since it lets water infiltrate to the subsoil and also it sets well to remove that "squishy" feeling you get with waterlogged soil. Crushed stone works much better than river rock or pea gravel since the last two materials will not set well and tend to cause the stone paver to settle with time. A minimum of 4 inches of crushed material should be applied to your base, but if you have a high rainfall and soil that does not drain well then 6 inches to 8 inches is not uncommon.
Talking of drainage, be certain you have a drainage area somewhere in your path if you have hard clay soil which does not let the water seep away. If not, you could find the situation where your travertine pavers can "float" which means slipping and sliding where you don't want them. They do not really float on the water, but the term floating used in this way means there is plenty of water beneath the stone making it slide easily when any side force is applied. The tiles get out of place since they slip more than they float. If you give a little consideration to the water situation you can have a passageway which lasts for years.
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