PacTool SA90338 Gecko Gauge – LP Siding Mounting Block Tool

PacTool SA90338 Gecko Gauge - LP Siding Mounting Block Tool - Compatible with ⅜-Inch Siding : Everything Else – 3/8” Siding

PacTool SA90338 Gecko Gauge – LP Siding Mounting Block Tool – Compatible with ⅜-Inch Siding : Everything Else – 3/8” Siding


gauge, siding tools, gecko gauge, hardieboard,


Weight: 567 g
Dimensions: 27.94 x 17.78 x 7.62 cm; 566.99 Grams
Model: SA90338
Part: SA90338
Pack Quantity: 1
Batteries Required: No
Batteries Included: No
Manufacture: General Tools
Dimensions: 27.94 x 17.78 x 7.62 cm; 566.99 Grams
Quantity: 1

35 Responses

  1. VictorHJPsxr says:

     United States

    Like the instructions say, don't over-tighten and make sure you're getting the model for the material you are installing. I was removing old rotten masonite siding from a chimney and replacing with LP SmartSide 3/8" x 8" lap siding. These Gecko mounting blocks are awesome! Slide under the previously attached plank as shown in my pics. The question I had was "how much is a correct reveal" or overlap in the planks, however you look at it. I suspect each siding mfg., has their recommendation. LP has theirs for the 3/8" siding I used, of a minimum 1" overlap. These Gecko mounting blocks are adjustable each 1/4" so you can get the exact overlap recommended by the siding mfg.! Great product so far! Saved me a lot of time!
    Like the instructions say, don’t over-tighten and make sure you’re getting the model for the material you are installing. I was removing old rotten masonite siding from a chimney and replacing with LP SmartSide 3/8″ x 8″ lap siding. These Gecko mounting blocks are awesome! Slide under the previously attached plank as shown in my pics. The question I had was “how much is a correct reveal” or overlap in the planks, however you look at it. I suspect each siding mfg., has their recommendation. LP has theirs for the 3/8″ siding I used, of a minimum 1″ overlap. These Gecko mounting blocks are adjustable each 1/4″ so you can get the exact overlap recommended by the siding mfg.! Great product so far! Saved me a lot of time!

  2. KarlaFalleni says:

     United States

    These are a lifesaver for anyone wanting to side your building solo. They clamp onto the last row installed and hold up the next row at consistent height for nailing. BUT, ... for me the shelf holding the next row would move away from the building as I clamped. I installed a special hook out of sheet metal and it worked, but for the money I shouldn't have had to. These are NOT cheap. Another plus is that you can adjust the lift height by 1/4 inch increments; after a while I got so I could adjust one in about 30 seconds. BUT, the allen bolt doesnt' fit any wrench I had; weird. Used a pliers. Still, an absolute MUST for me. Worth it in the end. FWIW, there are guys on that "tube" channel that show how to make one for a few bucks.
    These are a lifesaver for anyone wanting to side your building solo. They clamp onto the last row installed and hold up the next row at consistent height for nailing. BUT, … for me the shelf holding the next row would move away from the building as I clamped. I installed a special hook out of sheet metal and it worked, but for the money I shouldn’t have had to. These are NOT cheap. Another plus is that you can adjust the lift height by 1/4 inch increments; after a while I got so I could adjust one in about 30 seconds. BUT, the allen bolt doesnt’ fit any wrench I had; weird. Used a pliers. Still, an absolute MUST for me. Worth it in the end. FWIW, there are guys on that “tube” channel that show how to make one for a few bucks.

  3. ValerieFarber says:

     United States

    They work
    Believe it or not they do work. Two things, when people say the nuts come loose and fall off. I used medium loctite no issues then also do not over tighten either that creates them to pull away from the wall as I learned. Other thing is after you set your siding on them loosen them and push back up just in case they get hit and move and they will. I was skeptical about them. So when your friends are busy. You got this!!
    Greg

  4. Anonymous says:

     United States

    This set is a lifesaver. It performs like a reliable second set of hands for my re-siding project. It helps move things along faster and, once initially adjusted, pretty much guarantees accurate spacing of each course of clapboards.
    This set is a lifesaver. It performs like a reliable second set of hands for my re-siding project. It helps move things along faster and, once initially adjusted, pretty much guarantees accurate spacing of each course of clapboards.

  5. jennietrotters says:

     United States

    My husband and I are building our son a tree house. We have to climb a ladder to hang the siding so any extra help is much needed. These clamps work like a charm. Easy to set up and adjust. It’s like having an extra helper or two. They keep the planks level (provided your first two boards are level-VERY IMPORTANT) as you nail them up. Would 1000% recommend.
    My husband and I are building our son a tree house. We have to climb a ladder to hang the siding so any extra help is much needed. These clamps work like a charm. Easy to set up and adjust. It’s like having an extra helper or two. They keep the planks level (provided your first two boards are level-VERY IMPORTANT) as you nail them up. Would 1000% recommend.

  6. MargoMayne says:

     United States

    Get the right ones for LP smartside!
    These are awesome! They pay for themselves within the first couple squares of siding you put up in reduced labor time.

    Make sure you get the right ones for your siding thickness. I bought 7/16″ months before buying siding, and the lp product I used is 3/8″ thick. I threw the 7/16″ ones away and bought the 3/8″ ones and install is going perfect.

  7. AleciaHutchins says:

     United States

    These are a must for anyone installing siding alone, you need to be careful a not drop the siding on it or it will slip, so double check before nailing, once in place it will hold fine
    These are a must for anyone installing siding alone, you need to be careful a not drop the siding on it or it will slip, so double check before nailing, once in place it will hold fine

  8. Anonymous says:

     United States

    Golden Review Award: 2 From Our UsersThe only thing I noticed is that you have to pay attention when using the product. Make sure the product is pushed up firmly. This is a user error not the product. Keep up the good work. I would buy more when needed! Thank you!!!
    The only thing I noticed is that you have to pay attention when using the product. Make sure the product is pushed up firmly. This is a user error not the product. Keep up the good work. I would buy more when needed! Thank you!!!

  9. OmerRoberson says:

     United States

    SwissPearl Plank

  10. Anonymous says:

     United States

    I bought this for my husband so he could install hardi board siding on my storage building. He absolutely loved it.
    I bought this for my husband so he could install hardi board siding on my storage building. He absolutely loved it.

  11. MargareRoberts says:

     United States

    Golden Review Award: 2 From Our UsersIn total I bought 3 sets it works a little bette. They are very stable and durable and make the job a lot easier and faster. Great produc
    In total I bought 3 sets it works a little bette. They are very stable and durable and make the job a lot easier and faster. Great produc

  12. Anonymous says:

     United Kingdom

    Gecko gauge
    Wow what a tool, I used these and done the whole gable end of the building on my own using cedral lap fibre cement cladding, lots of diffenent height settings so would most likely suit any board you put in, would 100% recommend this produc

  13. BuckTXXipmfexc says:

     United States

    Golden Review Award: 2 From Our UsersUsed these to put up lap siding by myself and they worked GREAT! Couldn't have done it without them. So easy to use and makes the job easier and fast.
    Used these to put up lap siding by myself and they worked GREAT! Couldn’t have done it without them. So easy to use and makes the job easier and fast.

  14. Anonymous says:

     United States

    Golden Review Award: 3 From Our UsersBeen doing carpentry work for 30 years. I was loaned a pair to use bc I refused to buy them. Made the job easier and quicker. Honestly can tell a difference when these have been used. Wouldn’t do a job without them now.
    Been doing carpentry work for 30 years. I was loaned a pair to use bc I refused to buy them. Made the job easier and quicker. Honestly can tell a difference when these have been used. Wouldn’t do a job without them now.

  15. Anonymous says:

     United Kingdom

    UK Stockis
    Southern Timber in Devon, UK stock these to fit 8mm boards and 10mm adjustment increments.

  16. Mac Hulligan says:

     United States

    Golden Review Award: 2 From Our UsersI bought a pair of these Gecko Gauges for a shed-siding job last fall. It was the best investment I've ever made on tools: They worked flawlessly and allowed me to install siding by myself - something I couldn't have done without them. When the job was finished, I sold them to another DIYer and recouped about thirds of my cost.
    I bought a pair of these Gecko Gauges for a shed-siding job last fall. It was the best investment I’ve ever made on tools: They worked flawlessly and allowed me to install siding by myself – something I couldn’t have done without them. When the job was finished, I sold them to another DIYer and recouped about thirds of my cost.

  17. CharlenM94 says:

     United States

    Golden Review Award: 2 From Our UsersWork great, makes L.P. siding installation super easy for one person to do. Some install spots tip the gecko holder out and the siding falls behind. Very minor issues, doesn't happen often but still an issue. Will be buying the other sizes
    Work great, makes L.P. siding installation super easy for one person to do. Some install spots tip the gecko holder out and the siding falls behind. Very minor issues, doesn’t happen often but still an issue. Will be buying the other sizes

  18. Anonymous says:

     United States

    I really don't know how one could even hang LP siding without this product. It takes it from at least a 2 man job to simple enough my 14 year old did the whole side of a house by himself. Revolutionary! Just buy this product. I hope whoever invented it made an absolute FORTUNE!
    I really don’t know how one could even hang LP siding without this product. It takes it from at least a 2 man job to simple enough my 14 year old did the whole side of a house by himself. Revolutionary! Just buy this product. I hope whoever invented it made an absolute FORTUNE!

  19. Anonymous says:

     United Kingdom

    Saving on time with Extra Hands!
    Amazing bit of basic kit just another helping Hand! The only issue I would say is the back plate is made of metal and it can be difficult to remove from the board when the Screws are tight. But Not complaining

  20. Anonymous says:

     United States

    If your running lap siding of any kind you need a set of these. There adjustable to about any width siding. A little pricey for something made of plastic (that's why I gave it 3 stars for Durability) but seam to be well made.
    If your running lap siding of any kind you need a set of these. There adjustable to about any width siding. A little pricey for something made of plastic (that’s why I gave it 3 stars for Durability) but seam to be well made.

  21. TinaLopezuiwcjl says:

     United States

    Golden Review Award: 3 From Our UsersIncreases clapboard installation and will pay for itself in less than 1 job. Only criticism is I wish there was an adjustment for tension when locked. There are different material thicknesses and variations within the same material. I have modified with some removable nylon webbing to get more pressure when needed.
    Increases clapboard installation and will pay for itself in less than 1 job. Only criticism is I wish there was an adjustment for tension when locked. There are different material thicknesses and variations within the same material. I have modified with some removable nylon webbing to get more pressure when needed.

  22. Lauren Adhav says:

     United Kingdom

    Handy tool for fitting cladding
    What a brilliant tool to assist with fitting cladding. This ensures each board is the same distance apart and it allows me to work on my own as it holds the board. Worth every penny!!

  23. MaudeSmalley says:

     United Kingdom

    A great time saver, making the job much easie
    The product works very well indeed, but I ordered the wrong size, so have had to use a small home made packer in each one to make them grip which slows things down a little, but they are an excellent help and save so much time and effort. I am putting up a lot of cladding single handed and couldn’t do it without them

  24. Anonymous says:

     United States

    Golden Review Award: 2 From Our UsersMakes siding a one man job.
    I’m residing my house and I’m able to hang 16′ composite siding by myself ( I’m 73 ). With the long lengths, you have to check that the jigs don’t slide down before you nail them, but everything stays level and even all the way up. I find that measuring is easier as well. You can use the jig to help support your tape, again making working by yourself easier.

    If there was a way to adjust the “grip” on the siding, that would be nice, but — GREAT product.

  25. Anonymous says:

     United Kingdom

    Used for cedral cladding. Not a perfect fit but it does work. Probably saved my marriage
    Not perfect for cedral but not bad. Made cladding a double garage a breeze. Last time I had to get the wife to hold one end with a badly made jig.
    Save your sanity and spend the money. Glad I did.

  26. Anonymous says:

     Germany

    Super Hilfsmittel
    Habe mir fr Cedral Fassadenpaneele mit 10mm Strke das Modell SA90376, 7/16 Zoll, also fr ungefhr 11mm Paneele, gekauft. Zwischen Paneele und Spanner habe ich ein ca 1mm dickes Folienstck geschoben. Diesen Tipp habe ich brigens auch hier bei Amazon bekommen, das hat super funktioniert. Vielleicht htte das Modell fr 9,5 mm gepasst, aber die Lieferzeit wre mir zu lang gewesen. Ein Stern Abzug, weil die Hilfsmittel leichte Schleifspuren auf den Paneelen beim reinschieben und wieder rausziehen hinterlassen (weil die Hilfsmittel zwischen zwei bereits angeschraubte Paneele geschoben werden)

  27. XKWRoberto says:

     United States

    It slips at time, even if I have the handle in the locked up position. One of the two doesn't fit snug against the siding. It sometimes allows the Plank being installed to fall behind the clamp itself. It will allow one person to install the Plank siding, but you have really be on your toes! 15 feet up on the gable end is no time to find out It doesn't work as it should!
    It slips at time, even if I have the handle in the locked up position. One of the two doesn’t fit snug against the siding. It sometimes allows the Plank being installed to fall behind the clamp itself. It will allow one person to install the Plank siding, but you have really be on your toes! 15 feet up on the gable end is no time to find out It doesn’t work as it should!

  28. Eric Mack says:

     United Kingdom

    Very useful tool if you are putting cladding up on your ow
    There is a fine line between having the clamps tight enough to support the sheet you are putting up and being too tight and damaging the cladding you are attaching the Gecko to.

  29. Luke Edwards says:

     United States

    Very valuable and a huge time saver. A must for one-man application. Holds any length in position while you make final adjustments and nail it fast. I pinned both ends and the middle of long boards, so that on the next course the Gecko gage would easily slide under that board. Then after pinning the next course I would go back and nail the previous course every 16 inches. Then repeat the process as I worked up. This way I never had any problem sliding the Gecko gage under the underling course of siding. Adjusts in 1/4 inch increments down to 4 inches to the weather but by inserting a spacer in the slot holding the siding you can go to spacing below 4 inches which was necessary for me in some places to match existing siding on an old house. Easily handles 18 footers. A great tool. I learned about these gages from a YouTube video. It would be good for the manufacturer to have a video on the web page where it is sold so first time users like me understood how to use it.
    Very valuable and a huge time saver. A must for one-man application. Holds any length in position while you make final adjustments and nail it fast. I pinned both ends and the middle of long boards, so that on the next course the Gecko gage would easily slide under that board. Then after pinning the next course I would go back and nail the previous course every 16 inches. Then repeat the process as I worked up. This way I never had any problem sliding the Gecko gage under the underling course of siding. Adjusts in 1/4 inch increments down to 4 inches to the weather but by inserting a spacer in the slot holding the siding you can go to spacing below 4 inches which was necessary for me in some places to match existing siding on an old house. Easily handles 18 footers. A great tool. I learned about these gages from a YouTube video. It would be good for the manufacturer to have a video on the web page where it is sold so first time users like me understood how to use it.

  30. Anonymous says:

     United Kingdom

    A must for all carpenters
    Great tool a real must easy to use you can fix cladding on your own With complete ease
    Delivery was so quick from America better than expected

  31. Marcia Sekhose says:

     United Kingdom

    Very Good Clamps.
    I know someone that had these and I was told how much easier it is to fit Hardi plank cladding with them. A two man job can become one if you have a set of these. They looked like metal on the pictures but they are actually thick plastic. They also have a fabric pad attached where the clamp holds the boards so it doesn’t mark the finished board. Very happy with this purchase. Could not find these for sale by anyone in U.K. so ordered through Amazon USA and they took 7 days to arrive! I was shocked as I expected it to be much longer than that. Great service.

  32. Dara Kerr says:

     United Kingdom

    Brilliant produc
    Brilliant product, makes cladding a doddle for one person, great delivery time!

  33. Anonymous says:

     United Kingdom

    It's a must.
    I could not have done the work myself without this, a little expensive but sturdy, no need to over tighten.

  34. Anonymous says:

     United Kingdom

    Golden Review Award: 3 From Our UsersAwesome !!!!!
    We are proffesional installers of hardie and marley. These clamps really are a necessity for one person installation. Can recommend these 100%. Just make sure you buy the right size !!!!!!.

  35. NELKarinajkc says:

     United Kingdom

    Must have
    Easy to use works very well saves making a T Bar . 1 person can install long boards . Love i