Bugs in the basement: Bugs such as centipedes, pill bugs, silverfish, earwigs, carpenter ants and roaches are drawn to wet basements and often enter through cracks in the foundation. Moisture problems around a home’s foundations can be caused or worsened by: Poor drainage—A lack of proper drainage leaves some areas of soil around your home wetter than others, causing the home to shift unevenly. Primary Address: 222D House or slab foundation problems can cause walls to separate from the ceiling. A wide variety of techniques can be employed to insulate slab-on-grade foundations (Figures 4-4 and 4-5). The Advantages & Disadvantages of a House Built on a Slab Vs. a Crawl Space. This occurs due to an increase in moisture or by freezing forces. Signs of Foundation Problems (Slab Homes) Upheaval in the Slab. The problem: Your foundation or slab floor is moving upwards, leading to cracks in the walls and floors of your home. Other signs are not even near the foundation, such as door frame/window frame separation from brick or doors out of square. There is retained water under my house slab foundation (no basement). Arlington, Texas 76015 If you believe you need to have a drainage system installed, contact a drainage contractor who has is experienced in dealing with these sorts of problems. In fact, the largest foundation of moisture transmission occurs when it is not properly inhibited from reaching the concrete slab. 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A professionally trained foundation contractor is the best person to evaluate foundation heaving problems and suggest suitable solutions. That is when we found the moisture problem. Monolithic slab foundations have other advantages over foundations like pier and beam or a crawl space foundation. Plumbing Leaks Plumbing problems are frequently the cause of foundation … 110-742 Run the soaker hoses just enough to keep an even layer of moisture. The signs that your slab foundation is experiencing upheaval is if your walls, floors, or countertops are no longer level. When soil gets wet it becomes heavy. This animations show the possible problems that can occur from water entering you slab foundation. Once you’ve dealt with that, it  would be a good idea to contact a foundation repair company and have have your structure inspected. The fact that they are poured in one go means that they are efficient to make, and they also provide a solid foundation. If you live in Houston, you may want to elevate your house above the floodplain. This problem— driven by fast-track construction, changes in the behavior of modern floor coverings and adhesives, and the restrictions on the use of volatile organic curing compounds— has added impetus to the discussion of vapor barrier positioning under floors, particularly in the office areas of large warehouses and distribution centers destined to receive adhered finishes such as resilient tile and carpet. Common Causes of Moisture Issues. Regarding positioning of the “true” vapor retarder, the current document (2004 version of ACI 302) recommends that each installation be evaluated on a case-by-case basis but does direct that the slab be placed directly on a vapor barrier or retarder when a moisture-sensitive floor covering is to be installed. There is retained water under my house slab foundation (no basement). Thus, the amount of natural groundwater has … The biggest problem for decorative concrete with a lot of moisture moving through a slab is the pressure it exerts at the surface. One way to avoid problems is to install a French drain around your foundation. Inadequate grading. That will compromise the safety of the whole home and – adding insult to injury – will cost you a high water bill the whole time it’s causing damage. Two of the major types of foundation problems include foundation shrinkage and foundation expansion. Phone: (214) 536-9119, Plano, TX We have it within our power to produce and place concrete in a way that will help solve the two most egregious problems associated with slabs on ground: high shrinkage leading to excessive random cracking and curling and uncontrolled vapor transmission. Mansfield, TX 76083 It is when the foundation actually rises in areas. The concrete mix itself, in the event the slab is insufficiently cured or is otherwise holding moisture. Foundation Shrinkage. This will also prevent erosion of the soil. The concrete slab is often placed on a layer of sand for drainage or to act as a cushion. Plano, Texas 75024 Heave is more common with slabs than foundations because slabs have less weight to resist heaving forces. 2) Faults in Construction Negligence on behalf of the constructors can also cause crack in slab foundation and land your home in trouble. Frisco, Texas 75034 Don’t let the clay soil dry up and pull away from the slab. Water in the vapor form diffuses from warm to cold driven by the thermal gradient. Heave is more common with slabs than foundations because slabs have less weight to … If you live in Houston, you may want to elevate your house above the floodplain. Don’t let the clay soil around the foundation swell up. Moisture problems around a home’s foundations can be caused or worsened by: Poor drainage—A lack of proper drainage leaves some areas of soil around your home wetter than others, causing the home to shift unevenly. While mulch around the foundation of your home may look appealing, giving it a well-groomed appearance, it can cause some unexpected problems if not done with the proper care. This occurs due to an increase in moisture or by freezing forces. A crawl space foundation also requires professional grading 4 and lot preparation. If you’ve noticed that your foundation is damp, contact a drainage contractor or foundation expert. That’s because a moist concrete slab can indicate drainage problems. The signs of foundation problems can be insidious, for they can mimic conditions that are benign. The signs of foundation problems can be insidious, for they can mimic conditions that are benign. We identify and correct moisture problems early to ensure a successful installation and maximum long-term flooring value. In fact, the largest foundation of moisture transmission occurs when it is not properly inhibited from reaching the concrete slab. Fort Worth, Texas 76102 1. Good ground cover will help maintain a more constant uniform moisture level in the soil beneath. The realtor was really pressuring me to get the foundation piers put in(...), *Minimum of 10 foundation piers. Heave is the upward movement of a foundation or slab caused by underlying soils that expand or swell. The weight of the home will settle into the ground over time as well. If that’s the case, you should a contact a licensed plumber. HD Foundations offers Dallas, Fort Worth,…, Filed Under: Blog, Concrete Slab Foundations, slab foundation repair Tagged With: concrete slab foundation repair in Fort Worth, slab foundation repair, So happy you got the job done on time!!! Doors That Stick Or Don’t Open And Close Properly. If there is too much moisture in the concrete, and an impermeable layer is placed over it the moisture migration can laminate the coating. The slabs he placed directly on impervious polyethylene suffered “serious cracking.” Nicholson’s results, however, were drawn from three concrete test mixes laden with excessive amounts of water. Remember, brick is porous and has weep holes. The concrete slab can also absorb the groundwater below and around it. As salts are carried to a slab’s surface, it expands, causing the breakdown of adhesive bonds. This prevents excessive moisture from seeping deep into the soil, causing problems to the foundation structure. Solving the problem With new slabs, moisture most often means that the slab isn’t rid of all its water of convenience yet. The 1989 version of ACI 302 advocated avoiding vapor barriers wherever subsurface ground conditions permitted, and otherwise suggested placement of a pervious fill layer between the bottom of the slab and the vapor barrier, despite the fact that a relatively thin layer of porous fill subbase strewn with load transfer devices is all but unmanageable under the wheels of a laser screed. This type of foundation is great for areas with high moisture content where water can build up. A slab foundation is a large, thick slab of concrete that is typically 4”-6” thick in the center and poured directly on the ground all at one time. A slab foundation is made of concrete that is typically 4"–6" thick in the center. This means that the water is rising up from under your slab foundation and creeping into your house. The soil under a slab-on-grade, in the event of an improperly functioning vapor barrier. The soil conditions in Texas respond to rain and drought like a sponge. 3. Water is supposed to be easy to understand. The settling of the slab foundation is the most common issue with slab foundations in and around Houston. With slab-on-ground concrete, water-cement ratio is ultimately derived, not specified. Good ground cover will help maintain a more constant uniform moisture level in the soil beneath. And the rules governing water movement are straightforward: 1. This shrinkage is even visible to the naked eye if you look for the gaps between the edges of a slab and the foundation wall. 2. Expert foundation inspection & expansive soil repair in Greater Tucson & Statewide. It’s wise to have your Dallas, Fort Worth area structure evaluated. 2. If you’re a homeowner, it’s worth studying. Make sure the rain drains off. By Peter Craig. Monolithic slab foundations are the simplest, fastest, and cheapest types of foundations available. If there is a drainage problem, fix it from the outside, not the inside. Phone: (972) 381-2764, Mansfield, TX Concrete Slab Cons. An experienced drainage contractor can install a system that will resolve the problem. When the ground beneath the slab on grade foundation isn’t prepared correctly, if it is poorly compacted, or if there is not enough moisture in the soil and it shrinks, this can cause settlement of the slab and slab cracks will begin to form. Water in the vapor form diffuses from more to less driven by the concentration gradient. ... A soaker hose prevents foundation damage by drying heat and effectively controlling the moisture in … But the biggest problem for decorative concrete with a lot of moisture moving through a slab is the pressure it exerts at the surface. The main reason for placing mulch is its ability to hold in moisture and insulate against colder temperatures. Heave is the upward movement of a foundation or slab caused by underlying soils that expand or swell. Make sure you don’t have a leaky foundation. Concrete slab readiness. Solving Moisture Problems in Concrete Slabs A strategy for success. The moisture from this water caused some damage to the hardwood floor that caused me to dig up and see what the issue was. They’re typically 12″-18″ deep and can be as long as needed. Many foundations utilize post tension cables, while others are reinforced with steel rods (rebar). The concrete footers 2 that will support the home’s foundational need to be level and secure. Settling of sinking of the foundation … Irving, Texas 75062 Fax: (817) 277-1719, Dallas, TX Air carrying water vapor goes from areas of higher air pressure to areas of lower air pressure. A crawlspace foundation differs from a slab foundation because it is not placed directly on the ground, the average crawlspace foundation is 2 to 4 feet above the ground. If the soil moisture is extremely high during construction, the slab will hold in the moisture except at the perimeter, where it is exposed to more wind and heat. This will create a vapour barrier. Check your water bill if you suspect that is could be happening. Then use soaker hoses to keep an even layer of moister around the perimeter of the slab during dry periods. If the soil moisture is extremely high during construction, the slab will hold in the moisture except at the perimeter, where it is exposed to more wind and heat. Point is, it’s imperative to prevent the water from seeping beneath your slab foundation. This could be due to increased moisture in clay soil or an improperly designed foundation. Sources of Moisture in Concrete. Outflow and Quality. To find out more, contact us. The problem: Your foundation or slab floor is moving upwards, leading to cracks in the walls and floors of your home. Slab Cracks: This is the most common problem in slab on grade foundations. They can also leech moisture from the ground, causing soil to contract away from the home. With moisture problems, the best approach is almost always to remove or control the source of the moisture, not to try to stop it at the last line of defense. This shrinkage is even visible to the naked eye if you look for the gaps between the edges of a slab and the foundation wall. Modern homes are more likely to have a moisture barrier that protects a concrete slab. Concrete naturally shrinks as part of the curation process. That may result in structural damage. First, the simplest and least costly techniques are to remove excessive internal moisture sources in the basement (humidifiers, cooking) and ventilate other sources (clothes dryer, bathroom). It only comes in four forms or states [1]. If the soil under your concrete slab is excessively damp, you may notice that your floor or carpet padding is moist. The soil conditions in Texas respond to rain and drought like a sponge. The upward migration of this moisture from within the slab and other moisture from below the slab-on-ground can lead to soluble alkali salts being placed into solution, which will raise the pH at the surface of the slab above the tolerable limits for today’s adhesives. This expansion and contraction with changes in moisture puts stress on your foundation. If you have foundation cracks, you may even notice tiny bubbles coming up from the floor. Basically there are two big slab foundation repair issues that cause concern. Foundation Shrinkage. PROBLEM: If the ground around a foundation is level or slopes toward the … If the soil content is very low when a slab-on-grade foundation is poured, soil to the slab edges regains moisture first because it is directly exposed to rain water or irrigation water. This process, known as outflow, is influenced by external factors such as site drainage, ambient temperature, humidity, wind, and direct sunlight. For instance, do brick cracks or that little crack in the basement wall add up to nothing much, or is it a sign that the house is sinking into the earth? To create an energy-efficient and comfortable living space in your basement, you will need to insulate as well as properly control moisture. 1. But the biggest problem for decorative concrete with a lot of moisture moving through a slab is the pressure it exerts at the surface. Excessive rainfall can ultimately cause slab foundations to become wet and heave. If you’ve noticed that your foundation is damp, contact a drainage contractor or foundation expert. Why Does My Concrete Floor Sweat? Sources of Moisture in Concrete Rain, snow, and sprinkler systems are culprits on a work site open to the elements. Arlington, TX Solving Moisture Problems in Concrete Slabs View All 4 Photos Play slideshow . This can lead to mold and other moisture-related problems, especially if the slab is carpeted. Common Causes of Moisture Issues. This phenomenon and the moisture itself can lead to the failure of adhered finished materials including, but not limited to, blisters and loss of adhesive bond. 1. Warning Signs of Foundation You Should Know About. Heavy rains and melting snow—Excessive moisture makes a home shift. Each year, such problems account for hundreds of millions of dollars in unanticipated expenses to correct problems … Raising the slab edges is the wrong repair. A 1965 investigation by H. W. Brewer concluded that a vapor barrier placed directly beneath a concrete slab normally reduces moisture migration, though it may actually be increased at early stages when seepage of excess mix water to the subbase is retarded by the vapor barrier (which is influential on floor coverings). What Causes Foundation Upheaval? This field is for validation purposes and should be left unchanged. Water is an important component of any concrete mix. We have a moisture problem in our foundation. When expansive soil beneath a slab pushes the center portion of the slab upwards, slab edges often appear to look like they are moving down. The adverse consequences of uncontrolled vapor transmission through concrete slabs-on-ground have risen to a dilemma of epic proportions in the construction industry. Moisture problems in concrete slabs old and new can play havoc with decorative concrete projects and other flooring strata in several ways, including bubbling, blistering and blushing of color. When tree roots extend under or around the foundation, they soak up moisture from the soil, causing it to shrink away from the slab or in some way alter the stability of the foundation. Settling of a slab foundation is common, especially when a home is first built. For instance, do brick cracks or that little crack in the basement wall add up to nothing much, or is it a sign that the house is sinking into the earth? This guide will walk you through all of the key aspects of a monolithic slab foundation, distinguishing it from other types of slab-on-grade foundations as well as other types of structure. Good ground cover also prevents excessive “drying out” of the soil through evaporation. Leak repair contractors deal with this kind of problem in a very effective way. Bone Dry Sealers and Etch-A-Crete Helps with Your Concrete Moisture Problems. 300 Bone Dry concrete sealers are the most cost-effective way of sealing concrete flooring to prevent moisture from damaging surface materials. A slab foundation is made of concrete that is typically 4"–6" thick in the center. ACI Committee 302’s Guide for Slab-on-Ground Construction has historically agreed with Nicholson’s conclusion and cautioned that a vapor-retarding membrane placed directly beneath the concrete slab exacerbates plastic and drying shrinkage and the related cracking and curling, because the bottom of the slab remains wet while the top continues to dry. You may also discover that the sheetrock in the lower portion of your walls is wet. Stabilizing soil moisture content could be the simple and surefire solution you’re looking for. Moisture Problems with Concrete Slabs. The water content has historically been governed by the water demand of local aggregates and proportioned to produce a placeable mix with an initial slump of 3 to 4 inches. 4. And mix designs that specify both water-cement ratio and compressive strength are not uncommon, although these two quality markers are not mutually compatible. Concrete floors are designed with vapor barriers to minimize this sort of problem, but those barriers are rated by permeability, which is to say, with enough moisture there is still some permeability. This prevents excessive moisture from seeping deep into the soil, causing problems to the foundation structure. Producers routinely offer a menu of mixes, prepared in accordance with ACI 211 recommendations, featuring an array of ascending strengths coinciding with descending water-cement ratios, in which the water content remains essentially the same. Ask them to conduct a test to determine where the water leak is originating and fix it. The position of the vapor-retarding membrane under a slab has long been the subject of research and conjecture. Traditional notions about concrete for slabs on ground do not distinguish between water-cement ratio and actual water content, especially at the point of placement. 420 Throckmorton St, #200 Dallas, Texas 75201 The moisture from this water caused some damage to the hardwood floor that caused me to dig up and see what the issue was. Phone: (817) 798-5656, Frisco, TX Heave is the upward movement of a foundation or slab caused by underlying soils that expand or swell. We did the test and it came out with a 13.2 and13.6 moisture. This moisture can be from supply lines, waste lines, or even HVAC systems. Phone: (214) 537-4577, Fort Worth, TX By Ed Finkel. What Causes Foundation Upheaval? What Causes Foundation Upheaval? Etch-A-Crete plays an essential role in this process by preparing hard troweled concrete for waterproofing. We do free foundation inspections and drainage evaluations all across the DFW metroplex. Site Map | Privacy Policy. That’s why you need to take steps to prevent foundation damage from progressing. Excessive rainfall can ultimately cause slab foundations to become wet and heave. The 1996 edition featured a cross-sectional diagram showing the concrete slab on a layer of compactible granular fill acting as a blotter atop the vapor-retarding membrane (with a minimum 10-mil thickness). The concrete slab is often placed on a layer of sand for drainage or to act as a cushion. Causes of Surface Dampness on Concrete Slabs and Garage Floors: Humidity—warm and humid air condenses into surface moisture when it comes into contact with the cool surface of your concrete floor or slab.. Faulty/Missing Vapor Barrier—moisture from the ground can seep up and surface through the concrete if no vapor barrier has been installed or is faulty Foundation problems are also prevalent in areas prone to flooding, as was seen with Hurricane Harvey in 2017. Broken Pipe Beneath the Foundation May Be First Discovered By a Leaking Slab. The problem: Your foundation or slab floor is moving upwards, leading to cracks in the walls and floors of your home. It’s also necessary to prevent it from coming in through the exterior brick. Heavy rains as well as plumbing problems resulting from under-slab plumbing leaks can lead to an abundance of trapped moisture beneath your slab. Other warning signs include cracks splintering up the walls, ... Water and moisture seep in through foundation cracks. 545 E John Carpenter Fwy, Ste. You could be losing 10-50 gallons of water per day, and maybe even more. In 1981, a research program conducted by Leo Nicholson (described in a September 1981 article in Concrete Construction), used three test slabs, with and without vapor barriers, formulated of concretes with varying cement contents and water-cement ratios. Foundation cracks and other…, Do you need concrete slab foundation repair in Texas? 2. Heavy rains and melting snow—Excessive moisture makes a home shift. This will also prevent erosion of the soil. It is from within the Concrete itself which with an excess of water … If you have problems with your concrete slab foundation, call Arizona Foundation Solutions of Tucson today to schedule a free inspection. Beginning in 1996, this publication drew a distinction between the terms “vapor retarder” and “vapor barrier” (with vapor barriers having a water-vapor transmission rating of 0.00 perms). Moisture-related floor covering and coating problems have in recent years become among the most common and costly issues being faced by design professionals, contractors, manufacturers, installers, and building owners. This is a newly constructed home and they applied a moisture barrier when the foundation was poured. concrete slab foundation repair in Fort Worth. The findings led Nicholson to proclaim that serious plastic shrinkage cracking in slabs-on-ground could be virtually eliminated by placing the slab on a pervious sand layer. The Advantages & Disadvantages of a House Built on a Slab Vs. a Crawl Space. The weight of the soil can be great enough to force your foundation … Moisture affects not only the foundation but also the piers, beams, joists, and shims supporting the structure. Because a slab-on-grade foundation rests directly on the soil below it, moisture and drainage problems can result as concrete is a porous material. The edges of the slab are thicker (as wide as 24”) in order to allow for extra strength around the perimeter. That’s because a moist concrete slab can indicate drainage problems. At HD Foundations, we’re contractors who install drains and repair concrete slab foundations. This animations show the possible problems that can occur from water entering you slab foundation. If the slab and the soil below it are not properly separated by a barrier then, moisture can move up through the slab and into the living area of the home above. You may have a problem with the pipes in your concrete slab foundation if you’re walking around your home and find your socks suddenly wet from some mysterious moisture. Offer expires 12/31/20, HD Foundations, Inc. Additionally, if any mistakes were made in the mixing and pouring of your slab, the moisture content may not be what it should be. Water in a porous … How do you know your concrete slab is ready to receive floor covering? That may result in structural damage. Phone: (817) 226-7221 Instead, moisture can be removed from the soil, allowing for soil shrinkage and a flat, stable base for the slab. In the Dallas, Fort Worth metroplex, wet slab foundation drainage issues and prevention is an important topic. Concrete naturally shrinks as part of the curation process. Waiting another day can be a simple, valid solution much of the time — when you have the luxury of time. Heave is the upward movement of a foundation or slab caused by underlying soils that expand or swell. Phone: (682) 331-7735, HD Foundations, Inc. - The Foundation Repair Experts in DFW © All Rights Reserved. So if you’re having moisture problems, we can help. The intruding roots can exert significant pressure on under-slab water pipes and basement foundations. Ok, not always straightforward: 5. It’s commonly an interior problem because breathable products that reduce the … Heave is more common with slabs than foundations because slabs have less weight to … A concrete slab-on-ground is the heart of an industrial facility. Two of the major types of foundation problems include foundation shrinkage and foundation expansion. Costs less to build - Homes with slab foundations, on average, cost about $10,000 less to build. The potential for moisture problems exists anywhere building components are below grade, whether you have a basement, crawlspace, or slab-on-grade foundation. A 1965 investigation by H. W. Brewer concluded that a vapor barrier placed directly beneath a concrete slab normally reduces moisture migration, though it may actually be increased at early stages when … 325 N Saint Paul St, Ste 3100 3. Tree root intrusions: Large trees can cause foundation problems as roots grow through the soil underneath the home. The reason this is so problematic is because moisture in a floor slab, which carries salts, always tries to equalize with moisture in the air above it. If the slab and the soil below it are not properly separated by a barrier then, moisture can move up through the slab … This expansion and contraction with changes in moisture puts stress on your foundation. 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