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Thread: Waterproofing

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    Waterproofing

    I am building a outdoor bar with pt lumber and want to put some veneer stone on front and sides. I was going to use hardi cement board with metal lath, do I need any waterproofing between pt studs and cement board was going to do skim coat, over lath and then stone. The bar will be under a covered roof but does get some blown in rain? I have some tyvex wrap from someone I thought about using between cement board and pt framing if needed any advice would be great.

    Thanks
    Fred


    18 by 36 mountain lake, swg aqua plus, cartgidge filter, two speed tristar 1hp, 1hp super pump for deck jet n waterfall, espio alarm, aquabot jr, Definitive Tech Aw6500 speakers, Onkyo receiver

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    Re: Waterproofing

    I would put a water proof coating on the cement board prior to installing the lath. The cement backer board will allow water to get through.

    I have not personally used it but I heard Redgaurd is good. http://m.homedepot.com/p/Custom-Buil...WAF1/100169081
    ~Paul
    19x40 IG including 10' BE, 18,000 gal, plaster, 48 SF DE, 1.5HP pump, AquaPure SWCG, Ozonejoe 30MR, Rockwaterfall, LED light, TF-100 Fill date 11/21/2014
    My ODK Build | My Pool Build | If You're From Texas Vote Here

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    Re: Waterproofing

    I agree with Jabooh a waterproof barrier is a good choice. May be an overkill but its a minor cost of assurance of keeping the materials intact and any storage inside dry.
    I used Hydroban(hydrobarrier) from Laticrette which is like Redguard. The Hydroban is one of the steps for the MVIS stone setting process. http://www.laticrete.com/MVIS/ Not lathe needed - hardibacker, hydroban and stone.
    13,000 gallon IG
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    Dire need for surface refinish!

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    Killer95Stang's Avatar
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    Re: Waterproofing

    If you do use Redgard with your cement board backer, make sure you use a primer coat prior to laying in the two recommended full strength coats. A primer coat consists of 1 part redgard 4 parts water. I read that sometimes the cement boards suck up so much water that without the primer coat you might have adhesion problems. This is especially important with hardiebacker, because it is so dry.
    Pool done!! (backyard = work in progress) 32' x 19' inground freeform with 7' spa, baja step w/ (2) bubblers, stonescapes mini pebble finish, rock waterfall feature, 12" raised bond beam, Intelliflo VS, Whisperflo feature pump, (3) 5G Color LED's, FNS + DE 60, 400K Master Temp, Easytouch 8 w/ remote, Intellichlor IC40, Vision Classic Ceramic Kamado smoker, Margaritaville DM1000!!! Party Coming Soon!!
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    Re: Waterproofing

    Kerdi membrane. Made by a company called Schluter. It's used as the water proof membrane, over the sheetrock/hardi board, in bathroom showers. Spread thinset (1/4" notched trowel) over the backer/cement board and then put the membrane into the thinset. Use a flat part of the trowel or grout float to smooth it out and and knock down air bubbles. Then thinset the veneer stone over it. Make sure to use the unmodified (no additives) thinset, it'll cure faster. Home Depot and Lowes sells it. In the tile dept.
    Doughboy 12' x 20' Saphire semi-AG, Installed 2012
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    Killer95Stang's Avatar
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    Re: Waterproofing

    Kerdi is good, but way overkill and super expensive. Is it even rated for outdoor use? Easiest would be backerboard over frame. Tape all seams with backerboard tape and thinset. Apply a good coat of Redgard that can be easily found at Home Depot. Then use the stone manufactures recommendation for thinset or mortar.
    Pool done!! (backyard = work in progress) 32' x 19' inground freeform with 7' spa, baja step w/ (2) bubblers, stonescapes mini pebble finish, rock waterfall feature, 12" raised bond beam, Intelliflo VS, Whisperflo feature pump, (3) 5G Color LED's, FNS + DE 60, 400K Master Temp, Easytouch 8 w/ remote, Intellichlor IC40, Vision Classic Ceramic Kamado smoker, Margaritaville DM1000!!! Party Coming Soon!!
    TF-100 Test Kit w/ Speedstir

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    Re: Waterproofing

    Also, use epoxy coated screws when attaching the backer board. Don't want the screws rusting out over time and having the backer come loose.
    Doughboy 12' x 20' Saphire semi-AG, Installed 2012
    Waterway 1.5 HP 2 speed, 100 sqft cartridge filter
    Aprox 7000 Gal, Full sun, 85K heat pump,
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    Re: Waterproofing

    I think it really comes down to how much rain water you get or how often you will spraying your island down with a hose.
    I think Redguard should be fine and the least expensive, I used Hydroban because I had some left from my pool bond beam build. I also installed kerdi in a master bath shower(amazing stuff) but a shower is far different than a bbq island - unless you live in Seattle and it sitting on a uncovered patio!
    I think if you have the money to buy expensive substrate materials I would spend the money to get a grill accessories as some of these are an overkill for water barrier.
    Just my .02
    13,000 gallon IG
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    Re: Waterproofing

    It certainly depends on the project, but I am of the opinion the waterproof membranes and sealers can trap water.....often over and over in the same spot until you have some issues.

    I think I would forgo all the sealers and membranes on that particular job and simply make sure I provided good drainage and air circulation around the spots where water might collect.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Re: Waterproofing

    I decided to use plywood wrap with roofing felt latch n then stone. This will be cheaper and lighter on the casters. Here r some pix.


    Jeeper
    18 by 36 mountain lake, swg aqua plus, cartgidge filter, two speed tristar 1hp, 1hp super pump for deck jet n waterfall, espio alarm, aquabot jr, Definitive Tech Aw6500 speakers, Onkyo receiver

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    Re: Waterproofing

    Interesting technique.
    ~Paul
    19x40 IG including 10' BE, 18,000 gal, plaster, 48 SF DE, 1.5HP pump, AquaPure SWCG, Ozonejoe 30MR, Rockwaterfall, LED light, TF-100 Fill date 11/21/2014
    My ODK Build | My Pool Build | If You're From Texas Vote Here

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    Re: Waterproofing

    Looking good so far. I like the caster idea. What time does happy hour start?!
    Doughboy 12' x 20' Saphire semi-AG, Installed 2012
    Waterway 1.5 HP 2 speed, 100 sqft cartridge filter
    Aprox 7000 Gal, Full sun, 85K heat pump,
    TF-100 test kit

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    Re: Waterproofing

    Quote Originally Posted by Jabooh1 View Post
    I would put a water proof coating on the cement board prior to installing the lath. The cement backer board will allow water to get through.

    I have not personally used it but I heard Redgaurd is good. http://m.homedepot.com/p/Custom-Buil...WAF1/100169081
    They use cement backer boards in bathroom showers. You tile over the cement backer board. No waterproofing is needed on the cement board and I never heard of such a thing. If the cement boards lasts in a shower I would think that's all you need. Just my .02
    20X36 IG vinyl (18,000 gal), 3 sheer descents, Max-Flo 1.5hp VS 2300, Aquarite T15 SWG, C3030 filter, 250,000 BTU heater, Sharkvac XL (Hayward equip)

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    cwescapexlt4x4's Avatar
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    Re: Waterproofing

    I used the MAPEI 1-Gallon Mapelastic Aquadefense (got mine on sale or close out)
    http://www.lowes.com/pd_309486-1295-...7C1&facetInfo=



    Chris - aka cwescapexlt4x4
    (Build 8/26/14 - 10/17/14) in-ground Presidential Pools 15K gallon salt water pool Pentair Inteiliflo pump, Regal Blue Pebble, Clean & Clear filter, in-floor cleaning,
    LED light, 3' sheer spill, 2 benches, large Baja step. / Pergola by Booth Built 19W x 14D // Outdoor Kitchen, W/Primo grill and BBQ Coach kit for the island.

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    Re: Waterproofing

    Quote Originally Posted by Donny View Post
    They use cement backer boards in bathroom showers. You tile over the cement backer board. No waterproofing is needed on the cement board and I never heard of such a thing. If the cement boards lasts in a shower I would think that's all you need. Just my .02
    I would not sleep well at night knowing my shower did not have some kind of waterproofing either behind the cement board (6 mil poly would work fine) or something on the front like Kerdi, Hydroban or Redgard. I just redid my master bathroom and I put Kerdi over drywall. Good to go...sleeping well.
    ----Chris----
    25k IG/Spa Figure 8, 18x36, Pebble Sheen Blue Granite, Sta-Rite S8M150 Cartridge Filter, Pentair 460805 400k BTU Heater & 011018 IntelliFlo VarSpd
    Liquidator, Fafco Solar Heat, Polaris PB460 Booster Pump w/280 cleaner, Katchaleaf Cover, TF100 Test Kit, FAKE MAIN DRAIN

  16. Back To Top    #16

    Re: Waterproofing

    Here are a few updated pictures of my outdoor bar. Does anyone have any exsp with quickcrete counter top mix and know where to get cheap edge forms


    Jeeper
    18 by 36 mountain lake, swg aqua plus, cartgidge filter, two speed tristar 1hp, 1hp super pump for deck jet n waterfall, espio alarm, aquabot jr, Definitive Tech Aw6500 speakers, Onkyo receiver

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    Defgufman's Avatar
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    Re: Waterproofing

    Fun project for sure
    Inground 13,200 gal Vinyl, Pentair 3/4 hp pump, Pentair Sand Dollar filter, Polaris 280

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    Re: Waterproofing

    I believe someone here was selling their left over edge forms.

    Looking good man, anxious to see how that wood holds up in the elements.
    Completed 38'X21' IG Free form pool approx 18.5K gallons, sports pool w/spa and tanning shelf 3.5-5.5 ft. Jandy Cartridge Filter, Jandy stealth pumps, Jandy LXi Heater, I aqualink, Inline chlorinator. Click to see My Pool Build

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