I assume the idea is to prevent moisture from the earth from rising up through the gravel and rusting the underside of your camper.
Black plastic sheeting under gravel.
Putting a tarp or some other form of heavy plastic sheeting under the gravel instead of landscape fabric can be an appealing alternative in some cases.
I have root systems from butterfly bushes lilacs blackberries roses and evergreens all growing across the sheeting under all the weeds that have grown anyway.
It s such a nuisance.
It s generally more difficult for weed roots to penetrate plastic than fabric.
Plastic sheeting for weed control offers the advantage of being impermeable.
Black sheeting commonly used in landscaping and commercial vegetable production deprives weeds of light as well as moisture.
This causes root rot if you have plantings in the area covered by the plastic.
The plastic was laid down about 20 years ago and from the looks of it bushes were planted right on top.
Plain black plastic helps the soil retain moisture.
I would put plastic down but i would also make sure the soil under the plastic was carefully graded so water that falls on the gravel runs off to the sides instead of pooling on top of the plastic.
The black plastic retains heat causing the temperature of the soil under it to become a few degrees warmer than usual so plants may dry out more quickly than expected.
4 6 out of 5 stars based on 14 reviews 14 ratings.
Bear in mind that if you plan to use the plastic for several years or bury it under mulch gravel or a layer of soil thicker plastic will last longer.
It also helps warm the soil for early planting.
The dense plastic keeps weeds down effectively but stops air movement as well as water.
Current price 20 96 20.
It does not decompose quickly but if you need to remove the plastic it is bulky and cumbersome to dispose of.
Product title husky 4 mil black plastic sheeting 3 x 50 average rating.
Black plastic landscaping fabrics come in many guises but those that are at least 4 feet wide and at least 1 1 5 millimeters thick are the most commonly used.