If you're preparing a cementdekvloer storten for the renovation or new construct, you're probably already looking at a pretty big to-do list. It's one of those foundational tasks—literally—that sets the phase for everything else within a room. Whether you're putting straight down a beautiful maple parquet or a few sleek large-format ceramic tiles, the finish is only as good as the particular screed underneath this. Getting it flat, steady, and strong is the goal, but it's definitely a bit of a workout.
Let's be real with regard to a second: serving a cement screed isn't exactly the walk in the park. It's large, it's messy, and it requires a little bit of a "feel" for the material. Yet if you've got a DIY soul and a few solid pairs of fingers, it's work a person can certainly tackle yourself. Or, when you're hiring someone, it's still wise to know exactly what's happening so you don't end up with a wonky floor that can make your furniture wobble.
Why the prep work is usually actually the most important part
Before you decide to even think about the cementdekvloer storten process, you've got to have the "base" ready. I've observed people rush this particular part, and rely on me, they often regret it afterwards. You can't just throw wet cement onto a filthy, dusty floor plus expect it to stick.
First of all, clean the subfloor like your lifestyle depends on it. Any kind of loose bits of concrete, old glue, or dust will certainly create weak areas. Once it's clear, you usually need to apply a 1er. This helps the particular new screed connection to the older concrete. If a person skip this, the screed might "curl" or delaminate more than time, and that's a nightmare to fix.
After that there's the advantage insulation. This is definitely a big one. You need in order to put foam strips around the perimeter of the room. Why? Because flooring actually move. They expand and agreement with temperature modifications. Without those whitening strips, your floor may push against the particular walls and eventually split right down the center. It's a five-minute job that saves you years of head aches.
Finding the right level
The hardest a part of a cementdekvloer storten project is usually making sure the particular whole thing is definitely level. You can't just eyeball it. Most people make use of a laser degree to mark the line around the wall space exactly one meter above in which the finished floor should be. From that line, you can measure down to make sure your own screed is the right thickness everywhere.
Usually, a concrete screed is all about 5 to 7 centimeters thick. If it's too thin, it'll crack under the particular weight of your own footsteps. If it's too thick, it'll take forever in order to dry and you're just wasting money on materials. Finding that "sweet spot" is key.
Setting up your screed rails
In order to get a flat work surface, you'll want to set up "guides" or track. You can make use of long metal users or even simply mounds of the particular cement mix itself, leveled perfectly. These behave as tracks intended for your leveling pub. Once those are usually in place, you've got a way to follow, which makes the specific spreading of the cement a whole lot easier. It's like having training wheels for your floor.
The particular mix: Not too wet, not too dry
Whenever it comes to the actual combine for your cementdekvloer storten , you're looking for something known as "earth-moist" (aardvochtig in Dutch). It shouldn't look like the liquid concrete you observe falling out associated with a big mixer truck. It should be more like damp sand. If you squeeze a small number of it, it should remain in the ball without leaking water or falling apart apart immediately.
If it's as well wet, it'll shrink as it dries, leading to breaks. If it's too dry, it won't be strong good enough. Most people utilize a ratio of regarding 1 part cement to 4 or 5 parts sand. You can purchase pre-mixed bags in case you're carrying out a little room, however for the whole house, you'll probably want the sand-cement pump or even a large mixer on-site.
The particular actual pouring plus leveling process
Now we arrive at the heavy raising. Once you begin the cementdekvloer storten , you kind of have to carry on until the space is done. You don't want "cold joints" where one area dries before the next you are put.
Start at the far corner of the room and function your path toward the door. You distribute the mix, tamping it down securely with a spade or your feet to obtain the air out. Then, you make use of a long light weight aluminum straightedge (a reilat ) to "saw" across your guidebook rails, pulling the extra cement toward a person.
It's a bit of a rhythm. Fill, tamp, screed, do it again. Once an area is leveled, a person have a plastic drift and rub the surface in round motions. This brings a bit associated with "fat" to the top and creates a smooth, closed finish. Don't worry if it doesn't appear like glass; this just needs to be flat and uniform.
Dealing with vloerverwarming
When you're doing the cementdekvloer storten over underfloor heating (vloerverwarming), there are a few additional rules. First, make sure the plumbing are pressurized before you begin so you understand there aren't any kind of leaks. There's nothing at all worse than pouring a floor and realizing the heat doesn't function.
You furthermore need to give a special plasticizer to the cement mix. This can help the heat move better and provides the floor a little more flexibility so this doesn't crack when the pipes get warm. As well as for the particular love of most points holy, don't switch the heating on the day after you pour! A person have to wait weeks, or you'll literally cook the particular moisture out of the floor plus ruin the structure.
The waiting around game: Drying times
This will be the part that tests everyone's patience. You've finished the cementdekvloer storten , this looks great, and you want to get your floors down. However you can't. A cement screed dries very slowly.
The general principle of thumb is definitely a single week of drying out time per centimeter of thickness . So, if your floor is 6cm solid, you're taking a look at minimum six weeks associated with waiting. And that's just for "normal" flooring. If you're laying wood or PVC, the flooring needs to become incredibly dry (usually lower than 2% moisture), which could take actually longer depending on the weather.
Pro tip: Don't open all the windows and doors immediately. When the top level dries too fast while the bottom continues to be wet, the ground will warp or "cup. " Maintain the space draft-free for the first 48 hours to let the cement hydrate properly.
Common mistakes individuals make
Also pros mess up sometimes, several cementdekvloer storten falls flat come down to a few basic things:
- Not more than enough tamping: If you don't package the cement lower well, the flooring will be "soft" and might crumble later.
- Wrong height: Forgetting to account for the particular thickness of the particular final tiles or wood. You don't want a trip hazard at the doorway!
- A lot of water: It's luring to help make the mix "soupy" therefore it spreads simpler, but it kills the strength.
- No expansion bones: In large rooms (usually over 40 block meters), you need to cut "expansion joints" so the floor can shift without cracking.
Wrapping things upward
At the end of the day, the cementdekvloer storten is a gritty, physical job, but it's incredibly gratifying. There's something about seeing a rough, uneven subfloor become a perfectly flat, smooth surface that simply feels right.
If you take your time along with the leveling, get the mix consistency just right, and—most importantly—have the particular patience to allow it to dry properly, you'll have a ground that lasts a lifetime. It's the particular literal foundation associated with your home's inside, so it's worthy of doing it right. Make absolutely certain you've got a good pair of knee pads and maybe a cool drink waiting with regard to you when the particular last square meter is smoothed more than!