Asphalt On Top Of Floor Slab
Pros pour the hot mixture over a level gravel base before pressing and smoothing it with a steamroller.
Asphalt on top of floor slab. Because residential driveways handle only a limited amount of traffic a concrete layer with a depth of 2 to 4 inches is usually adequate. There are situations where we commonly put concrete over asphalt when building roadway pavements. With solid hardwood floors a proper vapor retarder must be installed on top of the slab to make sure normal slab moisture does not reach the finished floor. I have done 6 mil under plywood 15 years ago.
You can park or drive a car on it within 24 hours. Layers of asphalt felt with asphalt mastic or 6 mil polyethylene sheathing are some of the choices. There are additional things that can be done prior to the overlay to get the maximum life out of it. This is constructed by placing and compacting the base material and then placing about a 3.
All the info i have found says felt glued down with mastic is best or 6 mil plastic. I just wondered if that approach still is relevant. Well the answer is yes. The binder is usually very hot when it s combined with the aggregate.
In addition to cutting out the offending asphalt glen makes sure the new apron is able to rest on the foundation. For driveways that will support particularly heavy vehicles such as. It is safe to pave asphalt over concrete. Both go under the subfloor plywood.
For example different types of asphalt fabric can be installed to reduce the amount of reflective cracking that can occur in an asphalt overlay on concrete. If you ve been thinking about updating your driveway or parking lot you might be wondering if asphalt can be paved right over the top of the concrete. Or is there a better idea. Is 6 mil plastic or roofing felt best.
You can also mill or grind the concrete prior to the overlay to ensure the new asphalt overlay will have a good bond to the concrete. It s a messy job but necessary to keep the apron in place. It is called an asphalt treated permeable leveling course. Concrete is a great base material because it is stable and allows for excellent compaction of the asphalt above.
Most asphalt is poured as a single continuous slab. In these cases a few inches of the slab need to be cut back. Too often the garage slab is poured all the way to the edge of the foundation. Cut back the garage floor.