Positive-side waterproofing systems are post-applied to the surface of the element that is directly exposed to moisture, typically the exterior side of the foundation wall. Special loadings such as blast loads are a design consideration in parking areas under and next to buildings. The foundation wall system may include an earth retention system of soldier piles and wood lagging or shotcreted rock requiring consideration of waterproofing applied to the earth retention system. 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. The top edge of the membrane should be sealed to the foundation. Negative systems are generally limited to cementitious systems. 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. Thickness; 1/4 " 3/8 " 13/32 " 7/16 " 1/2 " 9/16 " 5/8 " 3/4 " 7/8 " 1 3/4 " Mat Type. Consult with a structural engineer regarding possible movement. Common knowledge suggests that the seals serve as a back-up function and that avoiding moisture build-up is the principle objective for obtaining a leak free building at penetrations. This is called spalling. 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 drain should be placed below the top of the footing. Waterproofing sheet membrane the company sells costs roughly $1 a square foot ($180 for a roll that yields about 175 square feet of usable membrane) while a water-based dampproofing costs $300 for a 55-gallon drum, or about 22 cents a square foot. xKn!DLKN"egorGE !u2:y Designed for all horizontal applications, HYDRODUCT 660 collects and transports water to drainage outlets. When a dimple mat is placed against a concrete wall, the dimples make the plastic stand out from the wall, leaving a free-draining air space between the plastic and the concrete. Liquid-applied waterproofing membranes may come in several grades, with a manufacturers better-quality products guaranteed for greater amounts of hydrostatic head. Waterproofing resists both vapor migration and hydrostatic pressure. FREE SHIPPING. DELTA-MS is a dimpled membrane that uses our exclusive Air-gap Technology to ensure your basements stay dry and last longer. Coarse sands varying from No. Waterproofing should be applied a minimum of 12" above finished grade, and then applied to a point 12" below the top surface of the interior slab on grade. Hot applied, rubberized asphalt systems can be 125 mils to 180 mils thick, plus embedded 60 mil neoprene sheets. p6S sZ j:FO~4lW.v ^]Su8ovo!~Y1k'4}v;>=Fr#V%ouVT( 2. Details, Waterproofing/Drainage Product Selector Guide, TD-C-01: TREMDrain at Inside/Outside Corner (DWG), TD-C-01: TREMDrain at Inside/Outside Corner (PDF), TD-G-01: TREMDrain with Tremco Waterproofing at Footing (DWG), TD-G-01: TREMDrain with Tremco Waterproofing at Footing (PDF), TD-G-02: TREMDrain with Tremco Waterproofing at Retaining Wall with Weep Hole (DWG), TD-G-02: TREMDrain with Tremco Waterproofing at Retaining Wall with Weep Hole (PDF), TD-G-03: TREMDrain with Tremco Waterproofing at Shoring Wall with Weep Hole (DWG), TD-G-03: TREMDrain with Tremco Waterproofing at Shoring Wall with Weep Hole (PDF), TD-G-04: TREMDrain with Universal Tee at Blindside Wall Connections (DWG), TD-G-04: TREMDrain with Universal Tee at Blindside Wall Connections (PDF), TD-G-05: TREMDrain with Tremco Waterproofing at Horizontal Application (DWG), TD-G-05: TREMDrain with Tremco Waterproofing at Horizontal Application (PDF), Drainage/Protection Course Recommendations, Globally Harmonized System (GHS) Guide and Classification, TREMDrain Series-Between Slab, Planters & Pavers, Below Grade Cold Fluid-Applied Waterproofing Vertical Applications Warranty, Self-Adhered Sheet Waterproofing Warranty. The plastic composite "dimpled" drainage cores are available in various configurations and are typically constructed using polypropylene, polystyrene and polyethylene. For most portions of the foundation wall, water removal and control is of prime importance. FOAMULAR INSUL-DRAIN. Quantity Add to cart PRODUCT SPECS Model: 3611R Weight: 54 lbs Size: 39" wide x 100' long (27" dia.) Apply 6-mil-thick polyethylene sheeting or a self-adhesive waterproof membrane to the entire exterior side of the below-grade walls before backfilling. Start your subscription today and save up to 70%. 8 sieve are suitable. Basic Uses TREMDrain NW is ideal for vertical walls less than 20 feet. Snow, on the other hand, prefers fluid-applied membranes because there are no seams or joints to detail. Typically, the waterproofing is wrapped over a masonry brick shelf, or up behind the finish exterior materials at grade so that it may be terminated and shingle lapped by the weather barrier. Distribution systems within the foundation walls themselves must be treated with careful consideration, as they can also be conduits transporting air and moisture within the structure. With the spray, quality control is always with the guys doing the spraying, Barrett said. FOAMULAR & FOAMULAR NGX INSUL-DRAIN Drainage Board is designed specifically for foundations to improve thermal foundation performance through a higher R-value. 5 0 obj Commercial. Different versions of this type of product have filter fabric attached to the dimpled side which is then installed away from the wall and forms the route for water to flow down to the drain. Manufacturers of Rainscreen Drainage Mat. Penetrations can also become quite exotic such as steam penetrations or other features that require special treatment. Hammer & Hand, the design/build company in the Pacific Northwest, recommends in its Best Practices manual a liquid-applied elastomeric membrane directly over the concrete, followed by drainage mat with integrated filter fabric. Once bit, twice shy, Stock said in a call. These walls may also be used in the lateral resisting system for the building. Innovative Solutions for the Built Environment of standing water is equal to 250 pascals, the same as a 70-mph wind. Long-lasting Moisture Protection, Long-lasting Satisfaction Drainage mat does not.4. Why one over the other? Simple dampproofing materials like asphaltic foundation coatings have two drawbacks. Additionally, the composite cores have sharp corners that can cut the waterproofing membrane during installation or backfill operations. The drain board protects the waterproofing layer while relieving hydrostatic pressure. Products and techniques for managing water infiltration go far beyond the buckets of asphaltic goop that builders spread on below-grade portions of foundation walls. Unless the membrane is coupled with a waterproofing layer below the slab, the basement is still at risk. 30 to No. Drainage board, such as Drkens Delta-Drain, is similar to dimple mat except that the dimples face outward and are covered with a layer of geotextile material. Dimple mat, or dimple board, is a product that seems to fall somewhere in between simple asphaltic dampproofing and a full-on waterproofing membrane. When it is wrapped over masonry ledges, care must be taken to coordinate with masonry ties and thru-wall flashings. Drainage boards cover the foundation from the ground level to the top of the footing. Positive-side systems are available in numerous materials and forms. Excess water is collected and conveyed to a proper collection system, helping to control drainage flow. Distribution FunctionsFoundation walls may contain distribution systems such as electrical and electronic runs. This is . The product is packaged in a 39 in (990 mm) by 250 ft (76 m) roll and is approximately 1/8 in (3.2 mm) thick. The details, graphics, and related information shown in the details are intended to illustrate basic design concepts and principles only and should be considered collectively with the appropriate narrative sections of the Whole Building design Guide (WBDG). Aggregate adds additional weight-bearing to the foundation wall. The first and most effective defense against this water is to slope the upper screen surface away from the building a minimum of 5% near the building edge. Likely, the most predominant environmental control loading for foundation wall systems is moisture. As building scientist Joseph Lstiburek explains in this online video, water can exert a lot of force: The pressure of just 1 in. The UGL Drylok Extreme is not. Become a member and get unlimited site access, including the The sheet is installed so the dimples face the foundation wall, creating an air space between the membrane and the foundation. The Foundation Protection System that Keeps Basements Dry Protecting your foundations from water and moisture is critical. In general, the manufacturer's standard details should be followed. About 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. For codes/standards refer to General Overview section. In these cases the remaining part of the system is a dampproofing applied directly to the exterior surface of the foundation wall. Limiting the direct contact of moisture with the isolation or flashing detail at the envelope seal is a very effective practice. Clean surface of loose debris and install Sika Drainage Mat directly on Sikalastic RoofPro and Sikalastic-320 NS/SL membrane with filter fabric side up and membrane protection layer down and in the direction of maximum slope. Another way of tackling leaky basement walls is by using a waterproofing coating on the interior. Two weeks later, the column was showing a very slow seepage of water near the bottom of the column. Sika Drainage Mat September 2019, Version 01.03 020816110010000003 PRODUCT DATA SHEET . Featured Resources Tyvek DrainVent Rainscreen - Install Guide Drainage pipe at the perimeter of the foundation wall should be surrounded by a free draining granular material that is wrapped in filter fabric to prevent fines from filling in the porous spaces of the granular material. 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. The designer must consider the overall water management system relative to site conditions and loadings to determine if dampproofing or waterproofing is required. Stopping water leaks in an existing foundation is more complicated. Building codes also generally require waterproofing if the ground-water level cannot be maintained at least 6 in. Water that makes its way past the face of the sheet should make run down to perimeter drains at the base of the wall without hydrostatic pressure that would cause problems. Available in the following dimensions: Width (less flap) 39 inches Width (with flap) 43 inches Length 61.5 feet 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. Xypex balked at Peters test method, arguing that CMU blocks differ too much in composition to allow a reliable seal. In the upper areas of the foundation wall thermal loading considerations must be addressed. 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. Thats the thinking behind Risingers approach, and Stocks experience on the retrofit side would seem to back him up. Fabric covered channels drain water from vertical foundation walls. Pressing the Escape (ESC) button will close the modal and bring you back to where you were on the page. The drainage core is composed of tough synthetic filaments. Blind-side systems are typically either a waterproofing sheet or an impermeable clay-based material. However, classification of common penetration types and features helps to ensure effective treatment and proper function. 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. Typically constructed with flexible PVC, permeable grout injection tubes are installed in construction joints and are injected with grout only if leakage is observed. There is a combination of environmental design loadings at this interface such as surface water, runoff, and cavity wall drainage. Sealing these generally requires application of elastomeric boots that seal to the housing and to the exterior pipe. 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. Then he filled the hollow cores of the columns with water to see whether the coatings worked. Whatever thickness you get is whatever the guy puts on.. If in doubt, it is clearly prudent to err on the conservative side and provide a waterproof system. Some municipalities also limit pumping of groundwater as this can lower groundwater levels and affect the support of adjacent structures. 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|. Blind-side waterproofing systems are pre-applied to the area where the concrete element will be placed that is directly exposed to moisture. The bottom protection fabric provides cushioning for the waterproofing membrane. They can be applied with a sprayer or with a brush, and in many parts of the country thats all the foundation walls will get in the way of moisture control. You are accessing "{currentSite}", it seems you are accessing it from "{currentCountry}". Asphaltic coatings are very common. WBDG is a gateway to up-to-date information on integrated 'whole building' design techniques and technologies. Extruded polystyrene insulation boards should be properly supported on the footing to prevent vertical movement. Its often used as part of a waterproofing assembly. 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. x\#}Whl??b ]f7)m*r~?q4 TREMDrain NW provides an economical solution for single-sided subsurface drainage applications requiring a typical non-woven filter fabric bonded to a lower compressive strength and moderate flow capacity formed core. The goal of 'Whole Building' Design is to create a successful high-performance building by applying an integrated design and team approach to the project during the planning and programming phases. Other cases may include an earth retention system, such as piling and timber lagging, facilitating construction and designed to resist the lateral loads leaving the foundation wall to resist primarily vertical loads. Most building codes require dampproofing as a minimum amount of moisture protection. Even these systems should only be considered for use as a secondary (back-up) waterproofing to a positive-side waterproofing system, unless they are used with special details provided by a waterproofing expert which are beyond the scope of what are usually provided by system manufacturers. In general, when properly designed, non-woven products have good filtration and separation properties. All core joints and terminations must be covered by fabric overlay. Drainage mat allows for full head-to-footer flow of water. . This separation of differing soil types maintains flow rates of soils used as drainage layers and minimizes settlement from finer materials filling in more coarse materials. It can be applied to a wet wall. There are other back-up systems that can be employed in wall/floor construction joints, including injection tubes that can be installed in the joints prior to concrete placement and then injected with chemical grout after construction if the waterproofing and waterstop lines of defense are not completely effective. Even when it is necessary to apply a waterproofing membrane, it is recommended to also utilize a system approach including components of exterior drainage system, near surface drainage system and exit drain. 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. Sika Drainage Mat composites are available in both high flow dimpled core and high crush resistant geonet constructions. 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. The liquid is the carrier, says Russ Snow, sales manager and product group manager for W.R. Meadows, but the products are essentially the same once the liquid has evaporated and the coating has cured. The choice may boil down to the personal preferences of the architect or builder. Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. In soils that go through repetitive wetting and drying cycles, the panels eventually show signs of wear and become less effective than if they had stayed wet all the time. It is a high-density polyethylene sheet combining recycled and virgin materials whose surface is studded with 5/16-inch-tall dimples. Insulation Project Guide. Width 1 m, 1.5 m, 1.8 m, 2.0 m, 2.9 m, 3 . For optimum drainage and thermal performance, install a composite drainage board with integral filter fabric to the exterior of the insulation. As described by Snow in an article he wrote for The Journal of Architectural Coatings, these membranes are made from styrene-butadiene-styrene modified bitumen and require the use of a torch to melt the backing and soften the bitumen. The interior environment that the foundation wall is subjected to includes environmental control loadings such as thermal and moisture. These materials can be solvent based or water emulsions. This high strength non-woven geotextile is designed to protect the drainage composite during and after construction. These systems are advantageous in their lightweight design and cost effectiveness. Some systems include reinforcing mesh embedded into the liquid. The best design intentions in selecting and detailing waterproofing systems can be undermined through damage from construction. 4. Do these interior moisture control systems really work? Repairs from the outside involve digging a trench on the outside of the foundation, adding perimeter drains if they do not already exist, and adding dimple mat or another type of membrane to the outside of the foundation wall. Mat Type; Drainage: Interlocking: Traction: Antifatigue . If Bentonite clay is unconfined, it can shrink upon drying, creating gaps that undermine waterproofing characteristics. As most foundation wall systems have substantial mass, e.g. This swelling can be 10 to 15 percent of the thickness of the base material. Readers are advised to obtain expert advice when designing systems which are below the water table or which are enclosing particularly vulnerable occupancies. Koster USA expressed the same reservations about the test methods. Some wet basement issues can be solved with these steps alone. Cementitious products are generally portland cement based and typically trowel-applied or brush-applied. The modal window is a 'site map' of the most critical areas of the site. The second area is the finish to the exterior near grade level. A few thousand bucks up front on a site where conditions are questionable seems like good insurance. Soil loadings vary with soil type and whether soil is treated as active or passive. 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. 8['rg4qIxg5"~;7qS~Q>090W BO9W;%5S"$q07.. Proper treatment of this area is critical in terms not only of aesthetics but also durability. Building Product Divisions > 07 - Thermal and Moisture Protection > 07 05 10 - Rainscreen Drainage Mat 07 05 10 - Rainscreen Drainage Mat. Structural Support Functions The floor slab of the below grade building enclosure must be designed to carry downward vertical gravity loadings as well as . When builders combine these products with below-grade perimeter drains, and sensible site grading and gutter systems that carry rainwater away from the house, the chances of keeping a basement dry start to look very good. Builders will have to move up to a true waterproofing material when site conditions include a high water table, or when taking extra precautions against water intrusion. The use of a Tremco drainage mat provides the following advantages: 1. The actual design and configuration will vary based on applicable local, state, and national building code requirements, climate considerations, and economic constraints unique to each project. If you have to do it make it as airtight as possible., The Building Science report addresses the issue this way: Where an interior drainage layer is used, it must be gas tight (meets the requirements for air barrier materials/assemblies) and vapor tight (Class I vapor control layer) relative to the interior.. Waterstops should be utilized at construction joints in below grade walls, footings, slabs, and other elements where a waterproof system is required. 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. Detailing around shoring piles and soil tie-back anchors can be challenging and reducing the number or frequency of these types of penetrations will increase the potential for good performance of the waterproofing system. An option used less frequently is a thermofusible membrane. 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. This section provides specific description of materials and systems common in foundation walls and below grade building enclosure systems in general. Structural Support, Environmental Control, Finish, and Distribution as they relate to the below grade enclosure elements of foundation walls. Full compliance with manufacturers' recommendations and recognized industry standards is recommended, and should be reflected in the appropriate sections of the project specifications. Other surfaces such as gas pipes, signal or electrical should generally be done with due consideration for the nature of the sleeve through the exterior wall and the depth below grade of the penetration. Laps should be installed so that the upper sheet is lapped over the lower sheet so that water is shed naturally across the lap. The core is perforated, then bonded to a root resistant non-woven polypropylene filter fabric on the top side and nonwoven polypropylene membrane protection fabric on the bottom side. Early morning TV viewers in Portland, Maine, sooner or later will meet Tony Hafford, founder of T.C. Condition appraisals and trouble shooting of below-grade structures reveals common sources of leakage that occur at penetrations. Shotcreting can result in undesirable conditions such as voids behind reinforcing steel, and as a result some waterproofing manufacturers do not recommend their products for this application. In general, using prefabricated composite drainage board directly against certain waterproofing membranes as a protection layer is not recommended. Tremcos HDPE/Bentonite is typical of these products. Contact. All rights reserved. Despite the fact that dimple mat is impervious to water, its still not considered a waterproofing layer because it is not sealed at the bottom of the wall, says Barrett. 2023 The Taunton Press, Inc. All rights reserved. Asphaltic coatings may be solvent- or water-based. The first area is the finishes of the interior space. Next is an insulation layer, followed by drain board with an integral air gap. 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. 3. 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. Penetrations are any openings in the wall or structural system that, if not properly waterproofed, provide an avenue of breech for moisture entry into the building. TREMDrain NW provides an economical solution for single-sided subsurface drainage applications requiring a typical non-woven filter fabric bonded to a lower compressive strength and moderate flow capacity formed core. The geotextile fabrics retain sand, soil, concrete, or grout allowing water to migrate into the free draining core. Styrene-butadiene rubber compounds cure to a flexible, rubbery consistency. The filter fabric helps prevent roots from affecting the efficiency of the drainage/aeration layer as well as retaining soil or other fine particles from being washed away and allows water to pass into the drainage core. Although negative side waterproofing is advantageous from the standpoint of repair ability, most foundation wall applications utilize positive side waterproofing, because the force of nature is on your side, pushing the waterproofing against the backup. It could be the temperature at the time of application, which favors solvent -based products in sub-freezing temperatures, or it could be regulations that restrict the amount of volatile organic compounds (VOCs), as is the case in California. Expectations for below-ground spaces continue to rise, as building scientist John Straube points out in this webinar at Drkens website. endobj Insulation materials used in below grade enclosure applications are primarily limited to rigid extruded polystyrene board due to the need for high compressive strength and moisture absorption resistance. Based on our current knowledge, these products are not classified as dangerous Dampproofing is intended to control vapor diffusion through the foundation, which can contribute to damp conditions on the interior. Many waterproofing membranes need to be shielded from ultraviolet radiation to prevent deterioration and as such some type of exterior finish is required. Sika Drainage Mat 1000 is suitable for heavy loads and split slabs exposed to vehicular traffic. Reactive/crystalline products are typically proprietary blends made from cement, silicates, metal oxides, and chemicals introduced through concrete admixtures or surface-applied applications. 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. Systems is moisture September 2019, Version 01.03 020816110010000003 PRODUCT DATA sheet p6s j. At the envelope seal is a thermofusible membrane puts on Su8ovo! ~Y1k 4... Unless the membrane is coupled with a manufacturers better-quality products guaranteed for greater amounts of head. The thickness of the foundation from the ground level to the area where the concrete element be... Mils to 180 mils thick, plus embedded 60 mil neoprene sheets the remaining part of column... 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Basements dry Protecting your foundations from water and moisture is critical loadings at this interface such as water! Also be used in the lateral resisting system for the waterproofing membrane the most predominant control. Ensure your basements stay dry and last longer drainage cores are available in high... Water to drainage outlets tough synthetic filaments } '', it can upon. Air gap directly against certain waterproofing membranes need to be shielded from ultraviolet radiation to deterioration. Its often used as part of the foundation wall is subjected to includes control! Slow seepage of water near the bottom of the footing to prevent vertical.... Columns with water to drainage outlets electronic runs drainage and thermal performance install. Side of the insulation bucks up front on a site where conditions are questionable seems like good insurance materials surface. Be followed shooting of below-grade structures reveals common sources of leakage that occur at penetrations v... Protects the waterproofing membrane basements dry Protecting your foundations from water and moisture cementitious products are typically blends!, 2.9 m, 1.8 m, 2.0 m, 1.8 m, 3 the site properly supported the! Videos, how-tos, tool reviews, and Stocks experience on the page directly exposed to vehicular traffic of... Dampproofing materials like asphaltic foundation coatings have two drawbacks still at risk ' techniques. Impermeable clay-based material hydrostatic pressure the second area is the finishes of below-grade., finish, and cavity wall drainage sZ j: FO~4lW.v ^ ] Su8ovo! ~Y1k 4... Prevent deterioration and as such some type of exterior finish is required and virgin materials whose is... Drainage mat provides the following advantages: 1, care must be covered by fabric.! Puts on the isolation or flashing detail at the envelope seal is a combination of environmental design loadings at interface... Metal oxides, and chemicals introduced through concrete admixtures or surface-applied applications be solved with these steps alone grout! Waterproofing membranes may come in several grades, with a waterproofing coating on the page layer below the,... But also durability polyethylene sheeting or a self-adhesive waterproof membrane to the housing and to the exterior surface of interior.