Insulation hangers may be set into wet daubs of Tremco membrane. $984.76. First, lets keep in mind that Peter would be the last person to claim lab-like precision with his testing. Unless the membrane is coupled with a waterproofing layer below the slab, the basement is still at risk. Sika Drainage Mat 1000 Sika Drainage Mat 1000 consists of a high density polyethylene geonet drainage core with its ridges heat fused to a layer of nonwoven polypropylene filter fabric on the top side and a heavy duty non-woven polypropylene membrane protection fabric on the bottom side. The membrane would provide a vapor barrier and a capillary break. FOAMULAR INSUL-DRAIN. Even in parts of the country that dont have a high water table or get much rain, dampproofing is required by the International Residential Code (section R406.1). If the climate receives more than 20 inches of rain annually, a drainage mat at least inch thick should be installed over the water control layer. The filter fabric retains soil or sand particles as well as freshly placed concrete or grout, allowing filtered water to pass through to the core. TREMDrain 1000 NW is ideal for vertical walls greater than 20 feet. The best design intentions in selecting and detailing waterproofing systems can be undermined through damage from construction. Hot applied, rubberized asphalt systems can be 125 mils to 180 mils thick, plus embedded 60 mil neoprene sheets. These are EnkaDrain foundation drainage mats. . Injection ports/sites are typically accessed from the building interior. Thickness (ASTM D1777) 10 mm (0.40 in) 10 mm (0.40 in) 6 mm (0.25 in) 25.4 mm (1 in) . 9 0 obj Based on some extensive excavation and waterproofing experience, it has been found that corrugated PVC drain tile piping can collapse under the weight of backfill, and the preference is to use stiffer PVC pipe if possible. Then he filled the hollow cores of the columns with water to see whether the coatings worked. When using cast-in place concrete, detailing of the form ties is critical and using single sided forms braced back to the slab can minimize this detailing. NOTE: Photographs, figures, and drawings were provided by the original author unless otherwise noted. Two of the productsKoster NB1 Grey and Xypex Concentrateare so called crystalline coatings, which are designed to seep into the concrete and form a crystalline matrix when they cure. For uneven rubble foundations, a layer of spray foam insulation can be applied over the waterproofing membrane, as the illustration below shows. Basic Uses TREMDrain NW is ideal for vertical walls less than 20 feet. The manual also recommends an expanding waterstop made of bentonite over a capillary break between the footing and the foundation wall. ft/roll These walls may also be used in the lateral resisting system for the building. Many areas around a building's perimeter at grade are subjected to high amounts of surface runoff from the high use of fenestration and impermeable wall faade materials, such as thin stone and EIFS. Geotextile fabrics are typically constructed using polypropylene, polyester, or nylon and are available in either woven or non-woven designs. A second level of performance would include a dampproofing layer (sprayed on asphaltic emulsion, for example), plus a drainage membrane like dimple mat, and drainage at the base of the wall. For foundation wall applications, typical cold applied fluid applied systems are approximately 60 mils in thickness. Where grade slopes down along an exterior wall, the waterproofing will step down incrementally so that it continues to protect the below grade, occupied space. Drainage mat can be fitted with outlets and drainage accessories to further move the water away from the structure. Store properly in original, unopened, undamaged sealed packaging in dry conditions, flat and wrinkle free at temperatures between 40 F and 95 F (435 C). As moisture moves from the upper screen through the drainage system on the exterior towards the exit drain, moisture will inevitably make its way toward the surface of the foundation wall itself. tb{g{x%s6FYi3i0SYEp14SQ>=Fu6{MCSpxn+wl>#m}/XZ2K.dham^EmZs~WbxfDq*-LR%w~n \,|u@Q( =LsDiNcjpuC#8]mKM1 `9{w-CYi?=]) K_4P}L+3Bb V;=zlWlxzjf ^eWS$hR2E~=ss!e11|. The polymer core mesh creates the airspace, while the lighter fabric prevents mortar from seeping into the newly formed cavity. An interior drainage layersuch as dimple mat or sheet waterproofing membranecan be added. Click to enlarge. The information contained therein is not intended for actual construction, and is subject to revision based on changes and or refinements in local, state, and national building codes, emerging building envelope technologies, and advancements in the research and understanding of building enclosure failure mechanisms. Structural Support, Environmental Control, Finish, and Distribution as they relate to the below grade enclosure elements of foundation walls. (11 mm) thick geocomposite drainage sheet system, comprising a hollow studded polypropylene core, covered on one side with a nonwoven, needle punched polypropylene filter fabric and on the other side with a smooth polymeric film. Asphaltic coatings may be solvent- or water-based. At edge overlaps place adjacent panels so the cores abut and secure the fabric at 35' (0.91.5 m) intervals with Sikaflex 11FC or approved adhesive. The key question that remains is whether to provide dampproofing or waterproofing to the surface of the foundation wall or not at all. Aggregate backfill needs to be trucked to the site and the dirt backfill hauled from the site. Typically constructed with flexible PVC, permeable grout injection tubes are installed in construction joints and are injected with grout only if leakage is observed. When pumps are to be relied upon to discharge moisture, a backup power system should be provided in the event of power failure. Lyndhurst New Jersey 07071 When cracks in a concrete foundation are not structural, they can be repaired by injecting them with epoxy or urethane from the inside. Depending on the size of the sleeve and the size of the footing, the footing may need to be deepened as shown to provide the required minimum 3 inches of concrete coverage for the rebar . As building scientist Joseph Lstiburek explains in this online video, water can exert a lot of force: The pressure of just 1 in. EnkaDrain 3811 is made of a drainage core of fused, entangled polypropylene filaments and a geocomposite fabric bonded to each side. It is a high-density polyethylene sheet combining recycled and virgin materials whose surface is studded with 5/16-inch-tall dimples. This excess moisture might be due to flooding or some other reason. But few in the business would argue that even a successful retrofit is better than keeping water out of the basement in the first place. Drainage mat does not.4. Its often used as part of a waterproofing assembly. Structural Support, Environmental Control, Finish and Distribution, are expanded below in general terms for foundation walls. Maine builder Ben Bogie uses a peel-and-stick waterproofing membrane or a fluid-applied waterproofing product, also in combination with dimple mat and perimeter drains. Homeowners at one time expected their basements to be wet once in a while. These details must be properly detailed and installed to be effective. Waterproofing Systems. xKn!DLKN"egorGE !u2:y Reading time: 1 minuteMinimum thickness of concrete slab, beam, column, foundation and other structural members is selected to meet the design requirements as per standard codes. Where sheet materials are utilized, it is preferred to adhere the membrane fully and continuously to the substrate to prevent lateral migration of leaks, and to heat-weld or positively bond the seam laps. below the bottom of the slab-on-ground. The foundation drain shown in Figures 1 and 2 can also be located on the interior side of the footing, or on both sides if necessary. The latter two should not be used as waterproofing except for the most non-critical conditions. Dimple mat is approved as a stand-alone productit can be used to satisfy code-required dampproofing (this is not the case in Canada, however, where a drainage layer also is required). Theres one thing to keep in mind when using a waterproofing membrane on the foundation walls, Straube says. Faade terminations often produce the accumulation of moisture at or near the grade line of the building with the surrounding area. Bentonite ClaysThese systems include composite sodium bentonite systems with HDPE liners and geotextile fabrics, which are more common and more effective than the traditional systems. Graded pea gravel refers to naturally rounded stone between 3/16 inch and 3/8 inch in diameter. In many foundation wall situations with low water table elevations, the combination of the upper screen, the exterior drainage system, the near surface drainage system and the exit drain will control the majority of the water. Good water management practices like . Perimeter drains of 4-inch Schedule 40 PVC covered with coarse gravel or septic rock in filter fabric completes the installation. The entry level of good performance, as Straube puts it, would consist of a drainage membrane like dimple map plus a perimeter drain at the base of the wall. These flashings are usually stainless steel to resist corrosion in contact with grade soils and moisture. Whether they are as reliable as waterproofing on the foundation exterior is another question. Hammer & Hand uses essentially the same procedure. Blind-side waterproofing systems are pre-applied to the area where the concrete element will be placed that is directly exposed to moisture. 3. Bentonite panels are still common on commercial waterproofing jobs, says Geiger, and remain popular with some architects and builders. 5. For foundation wall applications, typical cold applied fluid applied systems are approximately 60 mils in thickness. Dampproofing/Waterproofing in all situations should be carried up above the upper screen and integrally tied into the building faade flashing and waterproofing. Drainage pipe should have a slope of at least 0.5%, but preferably 1.0%. Environmental Control FunctionsThe exterior environment that the foundation wall is subjected to includes environmental control loadings such as thermal, moisture, tree roots, insects, and soil gas. It is always better to have a continuously bonded and adhered waterproofing layer to reduce the potential for lateral moisture migration beneath the membrane. Depending on the quantity of water that makes its way through the upper screen, a drainage system at the surface of the foundation wall is generally required to direct this water expeditiously toward the base of the foundation wall and the exit drain. Foundation Walls CHARACTERISTICS / ADVANTAGES . Figure 2 is an overall schematic that characterizes the four functions i.e. The top edge of the membrane should be sealed to the foundation. Waterproofing resists both vapor migration and hydrostatic pressure. Browse companies that make rainscreen drainage mat and view and download their free cad drawing, revit BIM files, specifications and other content relating to . Contractors like U.S. Waterproofing have a variety of options for tackling repairs from the inside. 3-D Drainage Mat for Advanced Moisture Protection in Exterior Wall Systems FEATURES/BENEFITS Product Information Sheet . 3. DELTA-MS is a dimpled membrane that uses our exclusive Air-gap Technology to ensure your basements stay dry and last longer. FOAMULAR & FOAMULAR NGX INSUL-DRAIN Drainage Board is designed specifically for foundations to improve thermal foundation performance through a higher R-value. Soil loadings vary with soil type and whether soil is treated as active or passive. Blog The performance of liquid-applied and sheet membranes is the same, he says, and costs are similar. The Glen-Gery Drainage Mat is an all-wall engineered rain screen drainage and ventilation mat for all sidewall applications including manufactured brick and stone. Distribution FunctionsFoundation walls may contain distribution systems such as electrical and electronic runs. Originally published on GreenBuildingAdvisor.com. TREMDrain NW is a two-layer drainage mat consisting of a polystyrene core and nonwoven, needle-punched polypropylene fabric. This section provides specific description of materials and systems common in foundation walls and below grade building enclosure systems in general. Warning: This video contains flashing images that could trigger seizures for people . On low risk sites where free-draining backfill and perimeter drains are provided, especially where basement use is limited, dampproofing may make sense to a developer looking for any way to cut costs. Design process includes proper assumption of structural element [] TREMDrain 1000 NW is used with TREMproof and Paraseal waterproofing membranes serving both as a protection course and replacement for traditional pipe and stone drainage systems. Waterproofing membranes are predominantly applied to the positive (exterior) face of the foundation wall, however, there are negative-side waterproofing systems that can be applied to the interior of the foundation wall, and blind-side waterproofing systems that can be pre-applied to a support-of-excavation wall resulting in a waterproofing system installed on the positive side. Where expansion and contraction of the services or pipes entering the building occurs, a sleeve through the wall that is discontinuous with the penetration piping is required. This is . The plastic composite "dimpled" drainage cores are available in various configurations and are typically constructed using polypropylene, polystyrene and polyethylene. The H8 version will handle 8 feet of head while the XTS, used in both residential and light commercial work, will resist 12 ft. of hydrostatic head, according to the company. The lens membrane should slope away from the building and collect and redirect the runoff to a drain tile or sump away from the foundation. Abrading & Polishing; Building & Grounds . Once bit, twice shy, Stock said in a call. They include flexible cementitious coatingssuch as W.R. Meadows two-part Cem-Kote Flex STand panels made with a layer of sodium bentonite (a variety of clay) that expands to form a watertight barrier when it gets wet. This finish is dependent on the interior use whether it be a controlled office environment or a non-controlled parking environment. But this approach would be more common with a brick foundation than it would with a monolithic concrete foundation. Koster USA expressed the same reservations about the test methods. Mat Type; Drainage: Interlocking: Traction: Antifatigue . With these softer waterproofing membranes protection board is recommended under the synthetic drainage layer or drainage layers with integral polyethylene backing may also be appropriate. We have a dedicated website for your country. It combines bentonite and a high-density polyethylene sheet that is installed on the outside of the foundation before backfilling. A few thousand bucks up front on a site where conditions are questionable seems like good insurance. The effectiveness of this initial screen in shedding moisture may influence the design of the other components of the system. 201 Polito Avenue Sealing these generally requires application of elastomeric boots that seal to the housing and to the exterior pipe. It is recommended that a 60 mil PVC membrane or polyolefin membrane be used, set on a concave sand bed and fastened to the foundation wall with a stainless steel termination bar with standard waterproofing applied to the wall above that point. With drainage, both of these procedures are eliminated. concrete or concrete masonry units. 2. Second, while effective at blocking the migration of moisture through concrete, they are not capable of blocking the passage of water that is under hydrostatic pressure. The TREMDrain is used with TREMproof and Paraseal waterproofing membranes serving both as a protection course and replacement for traditional pipe and stone drainage systems. Sq Ft: 325 Material Thickness: .45 inch Core Material: Polypropylene Free Shipping Need a written quote? Materials used may be concrete or reinforced masonry. The UGL Drylok Extreme is not. Other materials sometimes used as protection layers are extruded polystyrene rigid board insulation or prefabricated synthetic drainage layers. Reactive/crystalline products are typically proprietary blends made from cement, silicates, metal oxides, and chemicals introduced through concrete admixtures or surface-applied applications. Laps should be installed so that the upper sheet is lapped over the lower sheet so that water is shed naturally across the lap. But when the basement is being turned into living space, solving moisture issues becomes very important. Special loadings such as blast loads are a design consideration in parking areas under and next to buildings. For most portions of the foundation wall, water removal and control is of prime importance. 5 0 obj In the drain (i.e. In some situations, it may not be possible to apply waterproofing directly and entirely to the foundation walls, and it may be necessary to fasten a "lens" membrane to the foundation wall to catch runoff and redirect it away from the foundation. Asphaltic protection boards are available in 1/16, 1/8 and 1/4 inch in thickness. Its also used on the inside of foundations in basement retrofits. Insulation Project Guide. As explained by Matt Stock, president and owner of U.S. Waterproofing, a Chicago-area company, its possible to dig outside the foundation to expose a crack with a shovel or post-hole digger, then treat the area with bentonite. These systems provide a secondary barrier to the passage of water across these construction joints. Request Online $ Volume Pricing on Large Orders The installation of a properly designed footing drainage system is also recommended. The company suggested that Peter substitute SB Bonding Emulsion for some of the water in the NB 1 Grey mix and apply a primer (Polysill TG500) to the block before coating the CMU. Should you have any questions or comments on the WBDG, please feel free to contact our team at wbdg@nibs.org. In these cases, the concrete foundation wall is placed against the blind side waterproofing membrane. A rising water table can push moisture up behind the membrane at the footing. Some municipalities also limit pumping of groundwater as this can lower groundwater levels and affect the support of adjacent structures. With some coaxing, the two crystalline coatings did keep water out. For codes/standards refer to General Overview section. Designed for all horizontal applications, HYDRODUCT 660 collects and transports water to drainage outlets. Some wet basement issues can be solved with these steps alone. Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. However, water removal measures around foundation walls below the water table may be impractical and expensive over the long-term and the waterproofing strategy becomes critical. Dryvit Drainage Mat is a flexible, thermally preformed, in a zigzag configuration, mat made of polyamide and produced in a pale blue color for identification. Apply 6-mil-thick polyethylene sheeting or a self-adhesive waterproof membrane to the entire exterior side of the below-grade walls before backfilling. Choose from our selection of grease-resistant drainage mats, drainage mats, high-traction drainage mats, and more. For resources including texts, guides, and web pages refer to General Overview section. At times these systems are run internally in the interior surface finish system or in ceiling space. All core joints and terminations must be covered by fabric overlay. Appropriate use and application of the concepts illustrated in these details will vary based on performance considerations and environmental conditions unique to each project and, therefore, do not represent the final opinion or recommendation of the author of each section or the committee members responsible for the development of the WBDG. 4. In a technique called curtain wall injection, a series of holes is drilled all the way through a foundation and a sealant is pumped into the soil surrounding the wall or slab to create a waterproof barrier. EnkaDrain 3811R is a drainage composite mat used in foundation walls, retaining walls, beneath slabs, plaza decks, and green roofs. The geotextile keeps sediments out, and the textured surface of the membrane creates an air gap to relieve hydrostatic pressure. They perform a multi-faceted role by providing protection for RoofPro and Sikalastic-320 NS/SL membranes as well as a means of collecting and conveying excess water in plaza decks, split slabs, planters, roof gardens and other roofing and waterproofing applications. Creates a drainage/ventilation cavity environment behind natural and manufactured stone veneer walls. In fact, in some situations, conditioned below grade spaces are subjected to a constant inward vapor drive during summer as the interior space is air conditioned, and in the winter the interior space is heated resulting in a lower vapor pressure than the exterior condition as the soil stays relatively constant in terms of vapor pressure. This area should also be properly vented. When it is wrapped over masonry ledges, care must be taken to coordinate with masonry ties and thru-wall flashings. The thickness of these systems varies from 20 to 120 mils. However, a double coat of this paint-like material was not enough to prevent some water from seeping out at the bottom of the column. Dampproofing is intended to control vapor diffusion through the foundation, which can contribute to damp conditions on the interior. Waterproofing membrane systems are available as either post-applied or pre-applied products for use in either positive-side, negative-side, or blind-side applications. Moisture control made for wall systems An innovative drainage mat, Tyvek DrainVent Rainscreen prevents the rot, cracking, and peeling that moisture can cause in exterior wall systems. The four function categories, i.e. All drain tile piping should be laid onto large, river-washed aggregate stones, which is laid onto a filter fabric, which should be wrapped around and over the drain tile to try to prevent fine soils from filling the drain tile. Prefabricated Synthetic Drainage LayersThese products consist of a combination of plastic composite drainage cores with adhered geotextile fabrics. A special flashing behind face stones of buildings or special flashing and treatment of the exterior slab edge where it is adjacent to ground features is required. (This assembly looks a lot like an above-grade rainscreen wall, with the dimple mat taking the place of exterior cladding, and the dampproofing filling the role of a water-resistive barrier.). WaterWay Rainscreen Drainage Mats: Consists of a polypropylene core of fused, entangled filaments in varying thicknesses from a nominal 1/8 inch to 3/4 inch, depending on desired cavity space and cladding selection. This is accomplished through a drainage system at the exterior of the wall that is typically a free draining granular material. Sika Drainage Mat 420 and 720 Floor Slab Schematic. When designing the thermal, protection, and drainage elements to the exterior of below grade foundation walls, a slip plane should be introduced vertically within the assembly. One of the reasons that builders may stick with simple dampproofing is cost, says Steve Geiger, product group manager for W.R. Meadows. In stock and ready to ship. After spraying on a 60-mil layer of styrene-butadiene rubber, Risinger explains in this article in the Journal of Light Construction, he adds a heavy bead of sealant at the cold joint between the wall and the footing. Descriptions and guidelines are provided on the following topics: Drainage Materials for below grade enclosures include: Aggregate Drainage LayersAggregate drainage layers include graded pea-gravel aggregate or coarse sands. Basements are increasingly becoming in-law suites, man caves and home theaters where finish materials rival those in above-grade parts of the house, Straube says. But, he adds, just as water makes the bentonite swell, a lack of water makes the panels shrink. The code permits a variety of waterproofing materials (even rolled roofing), but the most common for residential work are probably liquid-applied and peel-and-stick sheet membranes. Sika Drainage Mat are manufactured articles/finished goods that do not require Safety Data Sheets to be marketed, transported or applied at the jobsite. Waterstops should be utilized at construction joints in below grade walls, footings, slabs, and other elements where a waterproof system is required. One potential disadvantage is the inability of some liquid products to span cracks or opening of construction joints, which may occur on new buildings soon after application. Foundation walls . of standing water is equal to 250 pascals, the same as a 70-mph wind. In blind-side (positive-side, without access due to tight lot lines, under slabs on grade, or other reason) waterproofing assemblies, products may include sheet materials of thermofusible HDPE or PVC, bentonite, or other similar proprietary sheet products. ArmorDrain 400 Drainage Mats are designed to provide drainage in extreme cases involving heavy loads or heavy traffic, such as under slabs, planters, retaining walls, bridge abutments, foundation walls and roof gardens. a slope of at least 1/8 inch per foot of drain or 1 percent should be provided). Moisture that penetrates through the upper screen needs to be directed to the exit drain located at the base of the foundation wall. This assembly, what he calls the biggest bang for the buck, should be able to cope with relatively wet conditions and work on all but the most challenging sites. In other cases, more extensive repairs may be needed. The first two systems can be applied as negative-side or positive-side waterproofing. Most building codes require dampproofing as a minimum amount of moisture protection. The Foundation Protection System that Keeps Basements Dry Protecting your foundations from water and moisture is critical. The material may have polyethylene film on one side and a glass mat surface on the other side. Hydrostatic pressure loads may exist in cases of high water tables or flood events. Imperfections in the sprayed coat are repaired or filled with the sealant (Risinger recommends Poly Wall 2200). Geotextile filter fabrics are also used for separating differing soil types in below grade enclosure applications. Styrene-butadiene rubber compounds cure to a flexible, rubbery consistency. Cosella Dorken Products. Drainage mat is principally designed to reduce hydrostatic head pressure and direct water to a perforated drainage system. The inherent difficulties of fixing water leaks on an existing foundation are a good reason to consider doing more than simple dampproofing when you have the choice. Thats the thinking behind Risingers approach, and Stocks experience on the retrofit side would seem to back him up. Moisture control is dealt with in a multiple screen/barrier type of design approach. What adhesives may be used for installing drainage mat to Tremco below-grade waterproofing membranes? Get home building tips, offers, and expert advice in your inbox. BROWSE CATALOG. Sika Drainage Mat 1000 Sika Drainage Mat 1000 consists of a high density polyethylene geonet drainage core with its ridges heat fused to a layer of nonwoven polypropylene filter fabric on the top side and a heavy duty non-woven polypropylene membrane protection fabric on the bottom side. Personally, I think its a terrible idea, says Barrett, who adds that radon is the second leading cause of lung cancer in the U.S. after smoking. In all applications, protection of the membrane and proper lapping and sealing of joints is critical. Area where the concrete element will be placed that is directly exposed to.... Provided by the original author unless otherwise noted is made of a properly designed footing drainage system also pumping. Offers, and Stocks experience on the retrofit side would seem to back him up drain or 1 should... Wet once in a call the sprayed coat are repaired or filled the! Of grease-resistant drainage mats, drainage mats, high-traction drainage mats, drainage! As they relate to the area where the concrete element will be placed that is directly exposed to.. For most portions of the reasons that builders may stick with simple is! With adhered geotextile fabrics treated as active or passive water to a drainage. 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