Right, the very best way to control the water is with a positive grade from the foundation. You can't really stop water, but you can manage it. Richard Justice www.blind-computing.com ----- Original Message ----- From: "Dale Leavens" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Sunday, April 15, 2007 12:34 AM Subject: Re: [BlindHandyMan] cracked foundation
> Actually the best thing would probably be to fill with expanding concrete > from both sides but I was thinking more to fill with something like foam > before attempting to cover over with tar. Tarring over a crack cannot work > unless maybe one heats heavier bitumen and forces it into the crack but > just > as driveways soon fail so would that. > > Up here we have a lot of trouble with cracking basements. The only > strategy > that really works to keep water out is to keep it away from the > building.even undamaged concrete will permit water to pass through it is > porous. While applying tar to the exterior is a long traditional > waterproofing method so too has it been a long traditional failure. One > would need to reapply it at frequent intervals like treating the timbers > of > old wooden ships. > > After using foam one would usually cover with some appropriately flexible > calking or other similar material, Clifford recommended I think a > fiberglass > and resin material which might well be made to bond to the concrete but it > is my limited experience that nothing really bonds to concrete all that > well > for very long. bits of the aggregate seem to shed all the time along with > what ever else is stuck to them until the union ultimately fails. > > Dale Leavens, Cochrane Ontario Canada > [EMAIL PROTECTED] > Skype DaleLeavens > Come and meet Aurora, Nakita and Nanook at our polar bear habitat. > > > ----- Original Message ----- > From: "Ricque" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Sunday, April 15, 2007 12:03 AM > Subject: Re: [BlindHandyMan] cracked foundation > > >> Hi Dale, >> Very good advice,but expanded foam will not hold up in exterior >> applications. >> Better to use backer rod which is extruded, and will last longer as a >> filler. >> HTH, >> Richard Justice >> www.blind-computing.com >> ----- Original Message ----- >> From: "Dale Leavens" <[EMAIL PROTECTED]> >> To: <[EMAIL PROTECTED]> >> Sent: Saturday, April 14, 2007 1:30 PM >> Subject: Re: [BlindHandyMan] cracked foundation >> >> >>> Is this a full basement foundation or partial? >>> >>> Is there some reason to worry about the crack? like is water coming in >>> or >>> something like that? >>> >>> While it is possible that this is a block wall parged on the inside and >>> out >>> it is more usual that only the outside is parged over on concrete block >>> construction. Apart for the appearance unless you have snakes or water >>> coming through there isn't any good reason to do anything. >>> >>> Some tar might fill the crack but it is not likely to water proof it all >>> that well, more discourage water but disturbing the soil against the >>> foundation is more likely to give water an easier route to percolate >>> down >>> against the very location of your crack. Better to land scape any water >>> away >>> from the site. >>> >>> The more usual way to repair a crack like that is from the inside, you >>> undercut the crack with a masonry chisel and mallet so that the bottom >>> of >>> the cut is wider than the top. You clean out the excavation thoroughly >>> with >>> a brush then dampen it and firmly trowel in some of that hydraulic >>> expanding >>> cement flattening it firmly to the surface. The cement will expand but >>> because of the undercut, it doesn't just pop out of the crack. >>> >>> This will reduce water infiltration and discourage critters. >>> >>> Hope this helps. >>> >>> Depending on things like soil conditions you are almost guaranteed to >>> have >>> some shifting of a building and concrete is not forgiving about that. >>> While >>> it has wonderful compressive properties it doesn't withstand stretch one >>> little bit so if the ground lifts a little or falls a little the weight >>> of >>> the concrete and supported building will crack it very readily. Happens >>> to >>> them all. >>> >>> If you do decide to dig down I recommend going to all the trouble of >>> back >>> cutting and cement filling or spraying in some of that foam in a can >>> before >>> tarring over. The tar though won't remain all that flexible for long and >>> soon will permit water through. >>> >>> Dale Leavens, Cochrane Ontario Canada >>> [EMAIL PROTECTED] >>> Skype DaleLeavens >>> Come and meet Aurora, Nakita and Nanook at our polar bear habitat. >>> >>> >>> ----- Original Message ----- >>> From: "Scott Howell" <[EMAIL PROTECTED]> >>> To: <[EMAIL PROTECTED]> >>> Sent: Saturday, April 14, 2007 12:29 PM >>> Subject: [BlindHandyMan] cracked foundation >>> >>> >>>> Ok folks, I got a question. >>>> >>>> I have a crack in my foundation which appears to go clear through the >>>> wall, its quite thin, but the section I need to dig up to get at it >>>> is about 4 feet deep and being the crack is only quarter inch likely >>>> at the bottom, and less at the top, I guess depending upon how I >>>> repair it, will determind how wide. So, what I was told is that if I >>>> get some foundation tar, I could paint the area and that really >>>> should do the trick. I'm being cheap I know since hiring a contractor >>>> would be easier, but damn all, I bet it would be expensive. So, does >>>> anyone have any other suggestions? This appears as far as I know to >>>> be a block wall with concrete poored on both sides or however they do >>>> it. I can't get inside the wall so have to assume this is accurate >>>> info. Its not a solid concrete wall I'm sure. Ah, tapping on it >>>> doesn't tell me much and so well, I'm open to any suggestions and if >>>> a contractor makes more sense, if anyone has any idea even remotely >>>> what I could expect to pay, that would help. >>>> >>>> tnx >>>> >>>> ps. Yes, it has leaked and only two times in 3 years so I guess that >>>> isn't so bad. grin >>>> >>>> Scott >>>> [EMAIL PROTECTED] >>>> >>>> >>>> >>>> >>>> >>>> To listen to the show archives go to link >>>> http://acbradio.org/handyman.html >>>> or >>>> ftp://ftp.acbradio.org/acbradio-archives/handyman/ >>>> >>>> The Pod Cast address for the Blind Handy Man Show is. >>>> http://www.acbradio.org/news/xml/podcast.php?pgm=saturday >>>> >>>> The Pod Cast address for the Cooking In The Dark Show is. >>>> http://www.gcast.com/u/cookingindark/main.xml >>>> >>>> Visit The Blind Handy Man Files Page To Review Contributions From >>>> Various >>>> List Members At The Following address: >>>> http://www.jaws-users.com/handyman/ >>>> >>>> Visit the new archives page at the following address >>>> http://www.mail-archive.com/[EMAIL PROTECTED]/ >>>> For a complete list of email commands pertaining to the Blind Handy Man >>>> list just send a blank message to: >>>> [EMAIL PROTECTED] >>>> Yahoo! Groups Links >>>> >>>> >>>> >>>> >>> >>> >> >> >> >> To listen to the show archives go to link >> http://acbradio.org/handyman.html >> or >> ftp://ftp.acbradio.org/acbradio-archives/handyman/ >> >> The Pod Cast address for the Blind Handy Man Show is. >> http://www.acbradio.org/news/xml/podcast.php?pgm=saturday >> >> The Pod Cast address for the Cooking In The Dark Show is. >> http://www.gcast.com/u/cookingindark/main.xml >> >> Visit The Blind Handy Man Files Page To Review Contributions From Various >> List Members At The Following address: >> http://www.jaws-users.com/handyman/ >> >> Visit the new archives page at the following address >> http://www.mail-archive.com/[EMAIL PROTECTED]/ >> For a complete list of email commands pertaining to the Blind Handy Man >> list just send a blank message to: >> [EMAIL PROTECTED] >> Yahoo! Groups Links >> >> >> >> > > To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday The Pod Cast address for the Cooking In The Dark Show is. http://www.gcast.com/u/cookingindark/main.xml Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/handyman/ Visit the new archives page at the following address http://www.mail-archive.com/[EMAIL PROTECTED]/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! 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