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Custom Building Products MegaLite 30 lb. White Crack Prevention Mortar
0010186769158

Custom Building Products

MegaLite 30 lb. White Crack Prevention Mortar

  • Flexes up to 1/8" to prevent cracks
  • Lightweight, unsurpassed bond strength
  • Non-slump for floors, non-sag for walls
$39.97 /each

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Product Overview

The MegaLite 30 lb. White Crack Prevention Mortar is the ultimate performing lightweight mortar protects against cracks up to 1/8 in. (3 mm). Offers the ultimate in bond strength for the most demanding installation requirements with the flexibility to withstand horizontal substrate movement up to 1/8 in. (3 mm). Formulated with CustomLite technology, it's 40% lighter than other mortars, providing excellent handling characteristics and offers non-sag, non-slip installation on walls. Diverse in application, it is capable of thin-set or medium-bed use up to 3/4 in. (19 mm) thick on horizontal surfaces after beat in. Non-slump, medium-bed features provide the ultimate support for large format tile and stone. Formulated with premium white cements and select recycled content for a pure white backdrop for the delicate installation of hard-to-bond glass tile. A 30 lb (13.6 kg) bag covers the same area as a 50 lb (22.68 kg) bag of traditional mortar. Use for interior or exterior floors, countertops and walls.

California residents: see   Proposition 65 information

  • Maximum flexibility to prevent cracks in tile
  • Unsurpassed bond strength
  • Non-slump for floors; sag and slip resistant for walls
  • Lightweight - 30 lbs. covers the same area as 50 lbs. of traditional mortar
  • Exceeds ANSI A118.4TE, A118.15TE and A118.11 without the need for additives
  • Formulated with recycled material and contributes to LEED certification

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Customer Questions & Answers

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Customer Questions & Answers

MegaLite 30 lb. White Crack Prevention Mortar
MegaLite 30 lb. White Crack Prevention Mortar

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3 answers

If you seal it in an air tight container, can you reuse it if you can't complete the job in one day?

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November 21, 2015
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Asked by
Houston
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Home Improvement Profile: DIYer
October 9, 2016
Answer: 
No. Tile mortar must be used within a short time. Speed set mortars have an even shorter open time.
Thin set mortar will still set up when there is no air.
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Asked by
Castle Rock, CO
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Home Improvement Profile: Professional
September 24, 2016
Answer: 
No. It'll cure with or without air, by design. So don't mix up much more than you can use within a reasonable working time (I make batches to use within about 20 minutes), because once it starts to stiffen up, even with regular re-stirring, you have to toss what's left. It's pretty expensive stuff to waste too much of it!
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November 23, 2015
Answer: 
The Megalite Ultimate Crack Prevention Large Format Tile Mortar cures by chemical reaction with a pot life of approximately 4 hours. For smaller portions you can mix 3 parts powder to 1 part water, you should get a peanut butter consistency. For further assistance please contact our installation division at 800.272.8786 option 2.
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2 answers

Can this be used for tuckpointing exterior brick

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September 24, 2016
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Asked by
Houston
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Home Improvement Profile: DIYer
October 9, 2016
Answer: 
Wrong product.
This is a mortar for adhering tile.
It is not the kind of mortar used for exterior brick.
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Asked by
Castle Rock, CO
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Home Improvement Profile: Professional
September 24, 2016
Answer: 
It's obviously not made for this purpose, so I'd recommend you call Custom's Tech Support guys to discuss this. All of them know their products, but some have more practical experience than others. I've called them a few times to discuss technical questions and I just ask for the person who has the most experience with whatever I'm calling about. You can find contact info on their web site.
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2 answers

how can I get the delivery expedited?

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Asked by
Arizona
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May 16, 2016
I need more of this product and the regular shipping time is too long. Can I get this expedited?
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Answers (2)

May 18, 2016
Answer: 
Please verify availability with The Home Depot. For further assistance please contact our installation division at 800.272.8786 option 2
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Asked by
Castle Rock, CO
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May 17, 2016
Answer: 
Hi Frankie -- I'm not sure why Home Depot forwards questions like yours to folks like me who are users of the product and have no influence over or knowledge of Home Depot's shipping options. I can tell you that HD recently shipped three bags to me in just under a week from the time I ordered it though their normal shipping mechanism. I'm sure you could contact customer service about expedited delivery Read More
Hi Frankie -- I'm not sure why Home Depot forwards questions like yours to folks like me who are users of the product and have no influence over or knowledge of Home Depot's shipping options. I can tell you that HD recently shipped three bags to me in just under a week from the time I ordered it though their normal shipping mechanism. I'm sure you could contact customer service about expedited delivery options as I've always found them to be very helpful, but at 30 lbs per bag, I have to believe that one or two day shipping would cost a small fortune! I was able to find a source about 50 miles from me that sells Custom's products including this one, so you may be able to do the same... and it might be worth a fairly long drive considering the huge bill that would likely accompany expedited shipping from HD. If you contact Custom, they'll be able to tell you who in your area sells their products. If you can wait, though, HD's price on white MegaLite is pretty good, and it amazes me that they include shipping for free for such a heavy item. Read Less
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2 answers

can megalite crack prevention be used to tile fireplace?

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Asked by
Duncan, BC
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November 26, 2015
I am tiling the hearth and back of a fireplace to have a wood insert installed. I was told i need a heat resistant mortar. Not sure if that is correct. is this mortar acceptable for use with ceramic tile - will it withstand the heat from the wood insert?
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Asked by
Castle Rock, CO
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September 24, 2016
Answer: 
Absolutely. I'm assuming you're tiling over an appropriate substrate so you have a good bonding surface. I've done surrounds on several gas fireplaces where I've installed 1/2" HardieBacker for 10-12" around the firebox to accommodate the heat that builds up in these boxes. This stuff sticks extremely well to both the HardieBacker (as expected) and the overlap of the firebox metal face. I don't know Read More
Absolutely. I'm assuming you're tiling over an appropriate substrate so you have a good bonding surface. I've done surrounds on several gas fireplaces where I've installed 1/2" HardieBacker for 10-12" around the firebox to accommodate the heat that builds up in these boxes. This stuff sticks extremely well to both the HardieBacker (as expected) and the overlap of the firebox metal face. I don't know Custom's recommendations regarding the max temperature it should be exposed to, but once it's fully cured it should be able to handle most any fireplace application. However, depending upon your specific application, you could certainly contact Custom's Tech Support team to discuss it. Read Less
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November 30, 2015
Answer: 
The MegaLite Crack Prevention Mortar can be used on the hearth but it would not be recommended to be bonded directly to the firebox in any way. For further assistance please contact our installation division at 800.272.8786 option 2.
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Customer Reviews

MegaLite 30 lb. White Crack Prevention Mortar is rated 4.7 out of 5 by 6.
Rated 5 out of 5 by from This is a lightweight, but strong mortar that I used it to tile my 25 sq ft bathroom floor (1st t... This is a lightweight, but strong mortar that I used it to tile my 25 sq ft bathroom floor (1st time). Initially I went with the Thinset, after taking the Home Depot Installing tile workshop, but I wasted about 3/4 of bag of thinset trying to figure out how much to use. There were too many lumps. Though the instructions read that you can mix by hand, FYI - You will benefit from using a power tool and mixer attachment to thoroughly mix the product with water. (I'm still trying to figure out out to get the hardened thinset out of the orange bucket.) I was concerned that I would waste a large quantity if I used the entire bag. So, i read another reviewer's response on how to determine the right quantity of the product if I didn't need it. (Think of peanut butter consistency. So, I added water and product until it reached the smooth peanut butter consistency and gauged how much to use for the job. I completed tiling and grouting and I still have approximately half of the product in the bag left to use for another bathroom. I could have used a little less, but for a first timer, I am very pleased with the MegaLite 30 lb. bag. Now on to completing the rest of the job.
Date published: 2016-11-05
Rated 5 out of 5 by from A Great Thin Set for Challenging Environments I used this thin set for what is certainly one of the most challenging environments for tile work: outside on a wood framed deck in Colorado. If it works for this, it'll work for just about anything. Last year I built my first large outdoor, waterproof, tiled deck with 18"x18" porcelain field tile, and this thin set has now survived multiple snow storms, followed by bright sun and the associated dozens of freeze/thaw cycles over the past 9 months. It's holding up very well to date with no sign of any issues. I am now in the process of building two more similar but smaller tiled decks and using this thin set again. The decks are constructed from engineered framing materials, covered by plywood, backer board and a waterproof decoupling membrane (made by the Noble company in my case). The surface does, as you would expect, expand and contract somewhat with temperature and humidity swings. I picked MegaLite thin set for its flexibility, and it is also the stickiest stuff I have ever worked with. When I first started using it for the larger format tile, I placed one tile using a 1/2"x1/2" square notched trowel on the substrate and back-buttering the grid on the back of the tile. I then pulled the tile back up to check for 95-100% coverage, which is critical for tile work outdoors, and it was all I could do to pull up that tile using two floor chisels and going very, very slowly so as not to break the tile. The stuff definitely grabs. I went through 24 bags for the first deck, setting just under 1,000 sq ft of tile. Using a light weight thin set is a little different than other thin sets... the consistency is very different and it skins over more quickly. This latter feature is something you need to factor into your tile setting approach because you definitely want to have no skinning when you set the tile. So you just need to have your tile pre-cut, trowel out for small groupings of tile at a time, work quickly and re-stir often (as with any thin set, don't add more water to thin it... toss it when it gets too thick). About 30 minutes after setting a tile, it's pretty much there for life. Cleanup is also more difficult than with a typical thin set because the stuff adheres more to buckets, trowels, your hands and anything else it touches; but that's expected and is a good thing as it's an indicator of how well it sticks. Time will tell how well MegaLite holds up through seasonal cycles, but I have no reason to believe it won't. I also like that you can build up the thickness of this stuff to as much as 3/4" when a thicker application is needed. I now also use this product when I have to set larger tile on a shower ceiling as I have no worries about tile coming loose either during or after installation. It's overkill and a little more tedious for less challenging tile work, especially given the cost, but when you have a tough job it's definitely a thin set to consider.
Date published: 2016-04-20
Rated 5 out of 5 by from works very well, but expensive It's pretty expensive. I used it for our 7'x4' shower where we tiled all the way to the ceiling with large format glass tiles. So, i spent hundreds of dollars on thinset alone. That said, I needed the lighter weight and flex this thinset gives. I recommend you mix it just a smidge on the thin side to give you more working time or mix it in smaller batches. It starts to harden a bit faster than other thinsets I've used. When you mix it just a bit lighter than peanut butter, it trowels out nicely and the back butter on large format tiles is smooth as well.
Date published: 2016-06-28
Rated 3 out of 5 by from Works good, but dries WAY too fast. This is a great value for glass, porcelain and just about any other material you are installing. HOWEVER, this stuff skins up in under 5 minutes. I don't understand why all of these "light" thin sets dry so quickly. If you are doing a backsplash or wall, and you have cuts to make, you will be lucky if it's not skinned over on the wall by the time you get back. I am sure there are many applications for this thinset that would be great, but this is my experience. It sticks great, it is very light, and good quality however.
Date published: 2013-04-03
Rated 5 out of 5 by from Used Mega Lite for my 16' honed porcelain tiles Once you sink a big tile into this stuff it ain't coming back up (without possibly cracking it ) so make sure you get it right. I mixed a little on the runny side because of this extreme adhesion. That way I could put extra down and if a tile was a little high I could "earthquake it " to get it to flow out the edges and scrape it up, thereby minimizing unsightly lippage . Made for extra work but I now know I have full coverage , especially under the fridge and it looks great. Photos don't seem to be uploading so you'll have to believe that it looks great.
Date published: 2014-07-03
Rated 5 out of 5 by from BATHROOM RENO EVERY TILE STUCK, PLACE IT CORRECTLY BECAUSE THERE IS NO GOING BACK LATER, THIS STUFF IS BRILLIANT
Date published: 2007-02-27
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