If you have installed a subflooring in your house, it is meant to level and flatten adequately. If you do not keep its levels, then your house floor covering, which can be of laminate, or tile or solid hardwood or other floorings on the top of your subfloor, can never be leveled or flatten. Such a type of problem can be solved by applying some easy techniques, but it depends on what exactly the kind of subflooring you already have.
These types of Uneven subfloors come under the two main categories first is general sloping, which can affect flooring perimeter as a whole or irregularities which are within the perimeter of the floor. If it is affecting the floor perimeter, whole, the slopes of the floor to the side or middle, then the repair project can be a significant part that is requiring the assistance and work from the contractor.
Whereas, if you find all the four sides of your room’s perimeter and middle are properly leveled, then that is the problem lies around fixing the flooring perimeter, which can be cured just with the addition by subfloor leveling compound and underlayment compound. Read more on how to use floor leveler.
Laser Subfloor Leveling Use
The laser level is the best way through which one can easily check the general sloping of the floor. If you want to check this for your house floor, you can use an inexpensive or reasonable line laser. However, you can get better results if you use a rotary laser level that gives you accurate measures, which can also be available on rent from the rental center.
A laser level tool can project the perfect level of flooring lines of the entire room. In order to check that your floor is leveled or uneven, all you need to do is to measure the floor between the laser lines and the floor levels at different points of the entire boundaries or perimeter of the room.
Checking End To End Slopes of the Entire Floor
If you have found that your rooms are out of the level or have uneven leveling from end to end, then the flooring problem resides below the subflooring, which cannot be solved by merely using underlayment or leveling compound. This means that the entire foundation footing or foundation wall is in bad condition or may be due to the ground layer shifted due to some reasons.
If there are not any problems in the foundation, then the sill plate can be the cause of uneven flooring. This type of layer is done by making a sandwiched of wood lumber that is between the exterior and the foundation walls of the floor. These sill plates might get impacted by rot or may be damaged if the carpenter ants, wood insects or termites are eaten them.
Another indicator that shows the floor leveling problem is due to the wrong foundation or sill plate, when the walls, door frames, and window frames show the cracking signs around the frame wall. If you possess an older house, than you may see such cracks that are overly and repeatedly painted or patched.
If you find such issues in your house walls, then, unfortunately, this type of fix cannot be resolved at home and beyond the skills that one thinks that of do-it-yourselfers. In such cases, you need to consult or ask them for a foundation repair contractor services or hire a general flooring contractor or expert wood floor leveler.
Middle Floor Sloping
If all the four sides of the room floor’s perimeter slope down to the middle, then this is because the joists or beams that are under the subflooring can sag, rotten by the termites or in some cases they may be broken.
When we talk about the basement or crawlspace, the upper room floor is braced by the adjustable columns made by steel, and they may also be known by lally columns. Next, those damaged structural members of the subfloor may be replaced or sistered with new beams that are much more durable made from structural lumber known as microlam or LVL Laminated Veneer Lumber.
Although one can be able to joist or two if you are a handy homeowner, when it is in a big area, you require a repair of joists from the experienced floor leveling contractor.
How To Install Thick Floor Underlayment
If you level the wood floor along with its perimeter, however, there are some interior waves or dips of about 4 inches or maybe less, then put down a new thick layer of plywood underlayment that assists in effectively bridging the slope or depression in the floor.
Installing a new 5/8-inch plywood layer or 3/4-inch plywood layer can be tongue-and-groove subflooring, which is like installing a new layer of subfloor on the old floor to create and make it stiffer, flatten surface that can be for any type of flooring. Here you get the instructions for how to level subfloor for wood flooring:
- First, you need to plan out for the layout of plywood for flooring so that it runs perpendicular to the joist of the floor. Also, make sure to offset the joints between the plywood sheets.
- The next step is to trim the first plywood sheet, which is needed to lurch the joints, also make sure the ends of the plywood sheet should fall over the joist. In case you cutting the sheet along its length, then you should remove the material from the plywood sheet from its tongue-side, so that you can leave the groove-side undamaged.
- Now place the plywood sheet you worked for first with the position along with one of the foundation walls that are with the groove edge facing towards the room. Now you require to fasten the plywood sheet to joists of the floor with 2 1/2-inch screws, which are driven through the older subflooring and inside the joists below.
- Trim the sheet if required and place the other plywood sheet in the first row. Make sure to leave a gap of about 1/8-inch between the ends. At last, you need to fasten the second plywood sheet as you did with the first.
- Simultaneously install all the remaining plywood sheets in the first row, and trim the last plywood sheet to make it fit, as much it is needed.