CONCRETE FLOATS
Concrete floats level, smooth and close fresh concrete before it sets, helping you knock down ridges, fill low spots and leave a proper finish.
When you've just poured a slab, patch or bay, this is the stage that decides whether it finishes clean or fights you all day. Concrete hand floats, bull floats and other concrete finishing tools are what you reach for to flatten high spots, bring up paste and leave the surface ready for edging or trowelling. If you're sorting sheds, paths, garage floors or larger pours, match the float material and size to the mix and the area, then get the right concrete floats in the van.
What Are Concrete Floats Used For?
- Smoothing freshly poured slabs, paths and pads before the surface tightens up, so you can knock off lines left by the screed and start closing the top properly.
- Working over garage floors, shed bases and small extensions with concrete hand floats where you need control round edges, corners and up against shuttering.
- Reaching across wider bays with bull floats straight after screeding, which saves you climbing into wet concrete and dragging boots through a finish you have just flattened.
- Settling aggregate and bringing up enough cream on sand and cement mixes to make later finishing, edging and jointing cleaner and quicker.
- Handling patch repairs, kerb work and small masonry jobs where cement floats and masonry floats help tidy the surface without tearing it up.
Choosing the Right Concrete Floats
Sorting the right concrete float is simple: match the float to the stage of the pour and the size of the area, not just whatever is cheapest.
1. Hand Float vs Bull Float
If you are finishing a shed base, patch, step or small bay, a concrete hand float gives you better feel and more control. If you are working a wider slab, go straight to a bull float early on or you will waste time stretching over wet concrete and leave marks where you do not want them.
2. Magnesium vs Wood vs Plastic
Magnesium floats are the usual pick for general finishing because they glide well and bring up paste without feeling too grabby. Wooden concrete floats are handy when the mix is wetter or harsher and you want a bit more texture. Plastic concrete floats are better when you want a tighter surface and less pull on the top.
3. Float Size
Do not buy an oversized float for fiddly work round posts, edges or narrow runs. Smaller floats are easier to control on repair work and domestic pours, while longer floats and easy floats cover bigger areas faster and help keep the surface even.
4. Handle and Job Comfort
If you are on concrete all day, the handle shape matters more than people admit. Pick one that sits right in the hand and does not twist when the face starts dragging, especially on larger concrete finishing tools where poor grip quickly turns into a scrappy finish.
Who Uses These on Site?
- Groundworkers use concrete floats on slabs, paths and external pours because a decent float helps them level off quickly before the surface starts going off.
- Brickies and general builders keep concrete hand floats handy for shed bases, step repairs and small pads where you need to work tight to formwork and edges.
- Landscapers swear by bull floats on patios, bases and hardstanding because they let you cover a lot of wet concrete without kneeling in the job.
- Maintenance teams and site repair crews use concrete finishing floats for patching worn bays and damaged corners where a rough repair would only need redoing later.
- Anyone buying through Plasterers & Brickies Tools or looking at Trowels will know these are the bits that sort the finish once the pour is down.
The Basics: Understanding Concrete Floats
Concrete floats are used after screeding to flatten the surface, settle the aggregate and bring workable paste to the top. The key is using the right float at the right point in the pour.
1. Bull Floating Comes First
A bull float is usually the first concrete smoothing tool on the slab after screeding. It reaches out over the wet surface to level ridges and fill shallow dips without you stepping into the pour.
2. Hand Floating Refines the Finish
Once the surface has settled a bit, concrete hand floats take over for detail work. This is where you sort edges, corners and smaller areas that need more control than a long-handled float can give.
3. Float Material Changes the Surface
Magnesium, wood and plastic all leave the slab slightly differently. That matters because the finish you want, and what you plan to do next with edging or trowelling, should decide which concrete finishing float you use.
Concrete Float Accessories That Make the Job Easier
A few add-ons save a lot of messing about once the pour is down and time is against you.
1. Bull Float Handles and Pole Sections
Do not get caught with a bull float head and no reach. Proper handle sections let you work further across slabs and stop you dragging planks about or stepping where you should not.
2. Brackets and Tilt Mechanisms
A good bracket gives you control over the blade angle, which is what stops the float digging in on the push or skipping on the pull. On bigger pours, that adjustment is the difference between a clean pass and a surface you have to chase back over.
3. Edgers and Groovers
Once the slab is floated, you will usually need to sort edges and control joints. Having the right edgers and groovers ready means you can move straight on while the surface is at the right stage.
4. Mixing Gear
If you are doing repairs, toppings or smaller pours, the finish starts with the mix. A look at Paddle Mixers makes sense if you want fewer dry pockets and less faff before the float even touches the slab.
Choose the Right Concrete Floats for the Job
Use this quick guide to narrow down the right float for the pour in front of you.
| Your Job | Concrete Float Type | Key Features |
|---|---|---|
| Small repairs, steps and patching | Small concrete hand float | Easy one handed control, good round corners and tight edges, less awkward on short runs. |
| Shed bases, paths and domestic slabs | Medium magnesium float | Good balance of coverage and control, smooth travel over fresh concrete, standard choice for general finishing. |
| Wider bays and fresh slab work | Bull float | Long reach, levels straight after screeding, keeps you out of the wet pour. |
| Rougher mixes or exterior texture work | Wooden concrete float | More drag on the surface, helps work coarse mixes, useful when you do not want an over polished top. |
| Tighter surface before final finishing | Plastic concrete float | Leaves a cleaner closed face, useful when you want less surface tear and a neater follow-up finish. |
Common Buying and Usage Mistakes
- Buying the wrong float material for the mix is a common one. Use the wrong face on wet or coarse concrete and it can drag, tear or leave the surface harder to finish properly.
- Leaving floating too late causes grief fast. Once the slab starts tightening up, you are working against it, which means more marks, more effort and a poorer finish.
- Using a hand float on a large slab wastes time and often leaves uneven passes. If the pour is wide enough to need stretching, you probably need a bull float instead.
- Going too big for small jobs makes the float awkward round edges, posts and shuttering. A float that is harder to control will usually leave more tidying up, not less.
- Ignoring the rest of the finishing sequence is a mistake. Floating is only one stage, so make sure your edging, jointing and follow-up kit are ready before the concrete moves on without you.
Magnesium Floats vs Wood Floats vs Plastic Floats
Magnesium Floats
Usually the all-round choice for concrete finishing floats. They are light in the hand, move well over fresh concrete and help bring paste up cleanly, which is why they are the standard pick for a lot of slab and base work.
Wood Floats
Wooden concrete floats give more drag and a rougher working feel, which suits wetter mixes or jobs where you want a more open surface. They are not as slick across the slab, but they can behave better on harsher mixes.
Plastic Floats
Plastic concrete floats are useful when you want a tighter, cleaner face and less pull on the surface. They suit finish work where you are trying to keep the top neat without overworking it.
Hand Floats vs Bull Floats
Concrete hand floats are for close control on smaller pours, repairs and edge work. Bull floats are for covering distance on fresh slabs straight after screeding, so you can level the surface fast before moving in with smaller concrete smoothing tools.
Maintenance and Care
Clean Off Before It Sets
Wash concrete off the float as soon as the job is done. Leave it to harden on the face or bracket and the next pass will never sit right.
Check the Face for Nicks
Any burr, chip or bent edge can score the slab. Give the blade or float face a quick look before each pour, especially if it has been rattling about loose in the van.
Store Dry and Flat
Keep floats dry after cleaning, and do not dump them under heavy gear. Warped or twisted concrete finishing tools are no use when you are trying to leave a level surface.
Tighten Brackets and Handles
On bull floats and easy floats, loose fittings turn into sloppy control fast. Tighten them before the pour starts, not once you are already fighting the slab.
Replace Worn Faces When Needed
If the face is badly worn, rounded off or damaged, replace it. For the money, it is not worth risking a poor finish on a full bay just to squeeze another job out of tired kit.
Why Shop for Concrete Floats at ITS?
Whether you need a small concrete hand float for patching, a magnesium float for general slab work or a bull float for bigger pours, we stock the range that matters. You will find concrete finishing tools, cement floats and related kit from the trade names you know, including Marshalltown Trowels, all in our own warehouse and ready for next day delivery. If the job also needs more site kit, have a look at Concrete, Site Prep & Groundwork.
Concrete Floats FAQs
What does a concrete float do?
A concrete float smooths and levels the surface after screeding. It knocks down ridges, fills slight low spots, settles aggregate and brings enough paste up to leave the slab ready for edging, jointing or later trowelling.
When should you float concrete after it has been poured?
Usually straight after screeding with a bull float, then later with a hand float once the bleed water has gone and the surface can take the tool properly. Too early and you work water into the top. Too late and the slab starts dragging and fighting back.
What is the difference between magnesium, wood and plastic concrete floats?
Magnesium floats are the usual all-rounders because they are light and leave a clean pass. Wood floats give more drag and suit wetter or coarser mixes. Plastic floats tend to leave a tighter face and can reduce surface tear when you want a neater finish.
Do I need a concrete hand float or a bull float?
For small pours, repairs and detail work, a concrete hand float is enough. For larger slabs, a bull float makes far more sense because it lets you level the surface from the edge without stepping into wet concrete. A lot of teams use both, just at different stages.
What size concrete float should I choose?
Pick the biggest float you can still control properly for the area you are working. Small floats suit patches, corners and narrow runs. Medium floats are right for most domestic slab work. Large floats and bull floats are for covering wider bays quickly and evenly.
Will one float cover every concrete job I do?
Not really. One float might get you through basic work, but different pours need different tools. Small repair jobs, rougher mixes and wide slabs all behave differently, so having at least a hand float and access to a bull float saves a lot of compromise.
