Is it important to put plastic under concrete?
Plastic is a moisture barrier generally to stop ingress from beneath the slab. If this is outdoor in an exposed area it probably doesn’t matter. I’d probably use plastic if the area is moist with little sun, just to alleviate any algae growth. It’s outdoors, north facing, lots of sun.
What kind of plastic do you put under concrete?
polyethylene (poly)
The most commonly used vapor barrier under concrete slabs is polyethylene (poly) plastic sheeting with a thickness of 10 mil or 15 mil. All Americover Vapor Barriers are composed of virgin polyolefin resins and offered in 10 mil, 15 mil, and 20 mil.
Should you put a vapor barrier under concrete slabs?
If you have a concrete floor that’s in continuous contact with a source of moisture, you’re going to have problems. This is why a vapor barrier under concrete is essential. Vapor barriers are a way to keep moisture from getting into the concrete.
Can I use plastic as a moisture barrier?
You can use plastic if you put polyethylene between your drywall and the wall studs. This way, you should get a tighter wall without trapping moisture inside the exterior walls. If you are framing out a below-grade basement, however, do not use plastic as a vapor barrier.
Why do you put plastic down before pouring concrete?
Quote from the video:
Quote from Youtube video: And to reduce the amount of water in the wet concrete being sucked up by the great dry ground when the concrete is first poured.
Do you need Poly under concrete?
The American Concrete Institute (ACI) recommends a minimum of 10-mil polyethylene or thicker for vapor retarders under concrete. Their Guide to Concrete Floor and Slab Construction ACI 302.1R-15 identifies that thicker poly provides a better barrier and is also more puncture resistant.
What do you put under a concrete slab?
Because concrete is a very porous material, it will absorb any moisture that it contacts. This can cause pooling. Without crushed stone, pooling water will settle under it and erode your slab. Adding a layer of crushed stone will add proper drainage, as well as create a barrier between your slab and the ground.
Can you pour concrete on plastic?
You can build a framework around the concrete slab with lumber, PVC pipes, or rebar to hold the plastic sheeting. Another method to prevent discoloration is to place dry straw directly onto the concrete, then put the plastic on top of it. Wet the concrete, then place the plastic sheeting over it.
Why is polyethylene used under concrete?
Used in a wide variety of applications, polyethylene provides an excellent vapor barrier for the protection of concrete slabs and foundations.
Can I use plastic instead of underlayment?
A: Avoid plastic sheeting on wood subfloors because it only serves to trap moisture and can lead to mold growth under the right conditions.
How long will 6 mil plastic last underground?
In summary, 6 mil poly will get you by for potentially four years, save you money for its purchase, but require your labor and time to recover every 3-4 years or sooner if it tears.
Is 6 mil plastic sheeting waterproof?
Some common applications for this product include using it as a vapor barrier for concrete or between drywall and insulation. They also can be used to cover a crawl space or under wood floors. Plastic sheeting is waterproof.
Do I need vapor barrier?
A vapour barrier is an important component in building construction. Its purpose is to help prevent water vapour from reaching building walls, ceilings, attics, crawlspaces or roofs, where it can condense and cause building materials to rot or grow mould.
How do you install moisture barrier under concrete slab?
Quote from the video:
Quote from Youtube video: It should completely cover the placement area all joints and seams should be overlap at least 6 inches and sealed using stego tape or stay go creek long. Stay go tape provides the most efficient.
Do you need plastic under gravel?
A good landscape fabric beneath a layer of pebbles or gravel goes a long way in preventing weed seed germination. Even the best landscape fabric won’t stop 100% of the weeds. Some seeds will inevitably germinate and sprout, however having a weed block barrier will keep the roots from getting a foothold in the soil.
Is it better to use landscape fabric or plastic?
Although more expensive than plastic, landscape fabric breathes, allowing oxygen and moisture to circulate and water to pass through. This makes it a better choice than plastic for use near trees and shrubs.
What is black plastic sheeting used for?
Our black plastic sheeting comes in many varieties, sizes, and mils and can be used in landscaping, organic gardening, construction, and general protection against dust, moisture and dirt. Black plastic visqueen is ideal for garden solarization because it is a strong absorber of sunlight and gets very hot.
Can I use a tarp instead of landscape fabric?
A plastic tarp can act as an effective and inexpensive weed barrier in gardens. The tarp can be used as a permanent soil cover, much like landscaping fabric, or a temporary aid when fumigating soil for weed control. When using a tarp as a permanent barrier, use a black plastic tarp.
What can be used instead of landscape fabric?
Best Landscaping Fabric Alternatives
- Wood chips.
- Bark mulches.
- Pine needles.
- Shredded leaves.
- Grass clippings.
- Compost.
- Newspaper.
- Cardboard.
Does gravel need landscape fabric?
Should landscape fabric go under gravel? Yes. Putting landscape fabric under gravel isn’t a requirement, but it is recommended. When used under gravel, it provides all the positives of weed control and added stability, without any of the negatives.
