List Price :
$808.42Price : $499.00
Code : B008KXAG1M
* Special discount only for limited time
Product Feature
- Can scan the entire floor within minutes instead of spot checks
- Convenient remote control enables user to be close to the spot instead of the tool
- High accuracy for detecting uneven spots
- Line visibility of 30-feet, line visibility with target plate is 60-feet and remote range 65-feet
- Powered by 4 AA batteries or Bosch 12V max batteries
Product Description
Product Detail
- Amazon Sales Rank: #125924 in Home Improvement
- Brand: Bosch
- Model: GSL 2
- Number of items: 1
- Dimensions: 7.00" h x7.00" w x8.50" l,
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9 of 9 people found the following review helpful.
Close but not perfect
By Daemon_EA
I got one. FYI the way it works is it shoots two laser beams that are and "X" that are each self leveled but at 90 deg to each other.
The point of a tool like this is when a GC shoots a laser line it is a line from the point of the laser tripod. But the issue with flooring is while you might be level over 10' you might have lumps and bumps in the concrete over that space. This tool is intended to find those lumps and bumps like normal floor layer would use a 10' concrete aluminum screed.
It works but there is are some major issues.
First and foremost, most flooring requires concrete to meet the 1/8" in 10' requirement. The measurement plate that comes with the laser starts at 1/8" and then goes up to a few inches. Sorry but if the floor has a 3" out of alignment you have huge issues, the point of a tool like this is determining 1/16" vs 1/8". And this laser gets close but is hard to do. I am sure it is in the design of the plate or perhaps the angle of the X that the laser beams shoot out. You see, the laser is greatly influenced by the way you set the plate on the floor. You have to have the plate perfectly on the floor to get a good reading. Also, on the plate, the difference between 1/8" and 1/4" is VERY close and really makes it hard to easily say where the beam sits. The laser beam is as wide as the space between 1/8" and 1/4". It would have been better if the laser made greater differentiation in the 0-1/2" range (aka have 0" as center and each 1/8" hash mark 1" apart from each other. Rather, you get a plate to show you a range of 0" to 3+" over about 3". My boss ended up walking around the job with a piece of cardboard to see how far apart the lines were as moving the little plastic target around was time consuming.
Better thing to do is use your normal straight edge on these locations where the beams separate and then mark the floor.
Second, when you first set up this laser you align the two lasers to meet into one beam in front. But it is hard to see when they are aligned since they are such wide laser lines. And if they are off you can throw your measurements off by over 1/8" easy.
Third, It is limited by dirt. Most job sites are not kept clean. So, when you show up to do a site inspection while you can drag around a 10' screed over the dirt, this tool requires you to broom clean the floor, otherwise every 1/8" size bit of junk shows the floor as out of alignment.
A test case:
I used it on a job where the entire floor had supposedly been 'self leveled' with Ardex K15. The GSL 2 found the lumps and bumps that the SLU applicators left on a floor. I'm looking forward to a job where I get to call back the applicator and tell him to fix / diamond grind the floor. I think this tool is going to make for a lot of unhappy GC's when flooring guys find all the flaws in concrete. But, I hope it will mean fewer arguments as it is self explanatory. You can't really argue with it. Now how to get paid for checking other trade's poor quality work...
3 of 3 people found the following review helpful.
I think it replaces straight edge and torpedo levels for concrete subfloor preparation
By Citizen John
This is the first floor laser tool to help make floors level and flat. The main difference between resulting end products from using this tool versus straight edges is that the floor can be made not only flat but also truly level. I noticed two other differences. First, it doesn't take a lot of time or skill to use this tool whereas it does if you use straight edges.
First thing I liked was the toolbox. This is a Bosch L-Boxx 3, sold on Amazon for about sixty-five dollars. Bosch has at least four sizes of their L-Boxx and people I know actually collect these things (to store tools) because they're stackable, durable, have very good clamps and nice handles on the top and side. The L-Boxx is a good toolbox that some buy separately.
The tool itself weighs 3 pounds. Also in the box were the remote control, target plate, and batteries and insert for the tool.
There are two lasers in this tool that together show elevations and depressions in a floor. Normally it would be necessary to get down all over the floor with kneepads and use a straight edge to check for elevations and depressions. It's necessary to get the concrete subflooring flat (and a bonus to get it level). If the subfloor isn't flat, the tile or wood going on it can make noise such as popping when walked on, and adhesives can also loose their grip over time. Flooring professionals know about all this and use additional bonding materials and grinding machines to fix such problems.
I've used laser tools for other purposes such as mounting items on walls such as shelving. It can at first seem very technical to use a laser tool. In the first use it quickly becomes apparent that this laser tool technology saves a lot of time, can be used by far less skillful individuals than those using traditional methods, saves on materials and conveys the impression of professionalism to spectators. I think this is the future because the use of laser levels has been standard for a long time in surveying and construction.
Using this tool, you set it down, turn it on, turn the dial if necessary to get the beams lined up as one beam, and walk around using the remote. The six-button remote is simple to learn, not like a TV remote. So you have the head of the tool swivel around while observing for issues while determining the swivel speed. Use the target plate, if you want, to show exactly the measurement of an elevation or depression when the two beams show a separation.
Bosch says this tool is accurate to (+/-) 1/8-inch to 30 feet, horizontal and vertical. I don't have any confidence that manual techniques can be more accurate than that. For example, the standards for Lowe's flooring contractors is (+/_) 3/16-inch every 10 feet. That's not as accurate as this laser tool. And remember that Lowe's has reputable contractors. But the main thing is the contractor takes a lot less time to check for flatness and leveling of the concrete subfloor and can theoretically therefore take more time fixing elevations and depressions on the concrete surface.
I recommend this laser floor tool. It's the only one on the market anyway.
5 of 6 people found the following review helpful.
Nifty tool
By S. G.
First off, I am NOT a general contractor or tiler, or any other kind of flooring craftsman. I got this tool hoping it would help with a series of wood and tile floors I'm planing on installing in a couple of weeks. My house is old and I know that the current floors are an uneven mess, so I'm sure they'll be even worse when we strip off the existing tile.
I agree with the other reviewer that the level measurement plate (the white board that shows you how uneven your floor is) is kind of a pain to use. However, once I figured out what I was supposed to be doing and got comfortable with the remote, I found it to be a simple and adequate way to test deviation. It is very important that the unit be sitting on a totally flat spot when you shoot the laser. Anything more than 4 degrees off and you will need to move the unit (because it won't self-level, a function the level attempts to perform when you turn it on).
Of course my floors are old and shockingly un-level, so it wasn't difficult to see the discrepancies on the level measurement plate for the preexisting flooring. In a couple of weeks my construction pro will show up, rip off the old floor and be able to use the tool on the sub-floor that will most likely need pre-flooring prep. Although he has been a general contractor for almost 25 years he has never used this kind of level and is very interested to try it out.
This is obviously a very specialized level and one I would think was indispensable for somebody in the flooring trades. The level is very easy to set up and comes with batteries if you don't already have a Bosch rechargeable battery. Like the other Bosch tools I own this level is extremely well-made and substantial. The use and set-up manual was very easy to follow, and it probably took me about an hour of farting around to finally figure out the best way to operate it.
People might consider this a dumb point, but I'd like to say how much I like the toolbox the level comes in. Unlike every other power tool I've ever bought, this box is roomy and doesn't require a degree in origami to get the tool back into the case after you've finished using it. There is ample room inside the case and it also has snaps on the bottom that will connect to other Bosch tool boxes and make for more convenient carrying.
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