Building Product Divisions > 07 - Thermal and Moisture Protection > 07 05 10 - Rainscreen Drainage Mat 07 05 10 - Rainscreen Drainage Mat. 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. Mar-flex provides products can meet any waterproofing and building need. 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. But experts caution against coating an entire wall with a urethane or epoxy sealer that is not vapor permeable. Drainage mat can be fitted with outlets and drainage accessories to further move the water away from the structure. An interior drainage layersuch as dimple mat or sheet waterproofing membranecan be added. 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. 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. Consult with a structural engineer regarding possible movement. Geotextile filter fabrics are also used for separating differing soil types in below grade enclosure applications. Although thats still a common approach for dampproofing foundations, builders also will find a range of other products, from peel-and-stick waterproofing membranes to liquid-applied synthetic rubber designed to span cracks in the concrete that are bound to develop in time. Whether they are as reliable as waterproofing on the foundation exterior is another question. Bentonite sheets are also typically shingle lapped with the lateral direction of the concrete placement. Dampproofing is always applied on the positive side, or wet side, of the structural element. The location of the building will inform (1) the amount of drainage provided and (2) the amount of insulation in the assembly. 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. This site is protected by reCAPTCHA and the Google. Injection ports/sites are typically accessed from the building interior. Full compliance with manufacturers' recommendations and recognized industry standards is recommended, and should be reflected in the appropriate sections of the project specifications. Lyndhurst New Jersey 07071 Other available dampproofing technologies include both cementitious and reactive products. Drainage boards cover the foundation from the ground level to the top of the footing. The first two systems can be applied as negative-side or positive-side waterproofing. The four function categories, i.e. UGL Drylok Extreme is guaranteed to resist 15 feet of head and last for as long as 15 years. Vertical loads exist from the dead, live and lateral loads from the structure and the wall itself. For optimum drainage and thermal performance, install a composite drainage board with integral filter fabric to the exterior of the insulation. For surface moisture loadings such as rain and snow, the first line of control is the upper screen at the exterior surface. 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. Disclaimer, Unified Facilities Guide Specifications (UFGS), Unified Facility Guide Specifications (UFGS), Federal Guide for Green Construction Specifications, Energy-Efficient Products and Technologies. Typically constructed with flexible PVC, permeable grout injection tubes are installed in construction joints and are injected with grout only if leakage is observed. (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.). Special emphasis is placed on evacuating the water at the wall base to avoid water build-up in the back fill or drainage system. But when the basement is being turned into living space, solving moisture issues becomes very important. Dimple drainage sheet, drainage membrane, drainage board, cuspated drain mat, drainage mat with dimple, cuspated drain board. The manual also recommends an expanding waterstop made of bentonite over a capillary break between the footing and the foundation wall. The performance of liquid-applied and sheet membranes is the same, he says, and costs are similar. Browse companies that make rainscreen drainage mat and view and download their free cad drawing, revit BIM files, specifications and other content relating to . Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. Many drainage mats also include a polyethylene sheet backer to uniformly disperse the loads imposed on the membrane and reduce the potential for damage caused by non-uniform profiles (dimples) in the composite core. Graded pea gravel refers to naturally rounded stone between 3/16 inch and 3/8 inch in diameter. Finish FunctionsTwo areas of finishes are of importance in relation to foundation walls. For most portions of the foundation wall, water removal and control is of prime importance. EnkaDrain 3811 is made of a drainage core of fused, entangled polypropylene filaments and a geocomposite fabric bonded to each side. Prefabricated synthetic drainage layers are sometimes used in lieu of protection board for protecting waterproofing membranes. Use the nonwoven filter fabric with soil, sand or stone ballast; use the woven filter fabric with freshly placed concrete or grout. Thermal considerations are of limited concern as one gets deeper down on the foundation wall as there is a constant, thermal design condition on the exterior. A protective sleeve that is two sizes larger than the pipe is required for any pipe that passes through a concrete foundation wall or footing. 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. Waterproofing Systems. Thickness (ASTM D1777) 10 mm (0.40 in) 10 mm (0.40 in) 6 mm (0.25 in) 25.4 mm (1 in) . 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. The geotextile fabrics retain sand, soil, concrete, or grout allowing water to migrate into the free draining core. Hydrostatic pressure loads may exist in cases of high water tables or flood events. This upper screen may consist of relatively permeable landscape areas ranging to impermeable pavers, concrete or asphalt surfaces that will shed the majority of surface moisture. Waterstops should be utilized at construction joints in below grade walls, footings, slabs, and other elements where a waterproof system is required. Drainage pipe should have a slope of at least 0.5%, but preferably 1.0%. Every variant of EnkaDrain foundation drainage mats is based on the same basic concept: A three-dimensional composite that consists of a drainage core either connected to one or sandwiched between two nonwoven geotextile fabrics. Designed for all horizontal applications, HYDRODUCT 660 collects and transports water to drainage outlets. 2023 National Institute of Building Sciences. 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. A liquid membrane cant covered with an elastomeric flashing extending to the edge of the footer and several inches above the cant has proven historically effective. Drkens version is called Delta MS. One of the reasons that builders may stick with simple dampproofing is cost, says Steve Geiger, product group manager for W.R. Meadows. Perimeter drains of 4-inch Schedule 40 PVC covered with coarse gravel or septic rock in filter fabric completes the installation. In areas with greater moisture loads from hydrostatic pressure from high water tables or sensitive interior environments, a waterproofing membrane should be applied to the exterior surface of the foundation wall in lieu of dampproofing. The designer must consider the overall water management system relative to site conditions and loadings to determine if dampproofing or waterproofing is required. Xypex balked at Peters test method, arguing that CMU blocks differ too much in composition to allow a reliable seal. Foundation walls . Drainage Mat 202. These systems provide a secondary barrier to the passage of water across these construction joints. 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. The drain board protects the waterproofing layer while relieving hydrostatic pressure. The companys EasyDri is a single-component polyurethane thats used to treat a crack, not the entire wall, says brand sement menager Amanda Helber. Ideal for stucco and stone, DrainVent Rainscreen is effective in a range of building materials. Revised by the Chairs of the Building Enclosure Councils with assistance from Richard Keleher, AIA, CSI, LEED AP and Kenneth Roko, AIA of The Facade Group, LLC For uneven rubble foundations, a layer of spray foam insulation can be applied over the waterproofing membrane, as the illustration below shows. The sheet is installed so the dimples face the foundation wall, creating an air space between the membrane and the foundation. Its also used on the inside of foundations in basement retrofits. Penetrations can also become quite exotic such as steam penetrations or other features that require special treatment. 3-D Drainage Mat for Advanced Moisture Protection in Exterior Wall Systems FEATURES/BENEFITS Product Information Sheet . After Peter wetted the block with water and rubbed in Xypex Patch-n-Plug, the leaks disappeared. 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. Proper design to connect downspouts into perimeter drain systems directly instead of flowing onto the area directly adjacent to the foundation wall is prudent in design. One difference is that 16-inch sections of the slab are left intact every 15 to 20 feet to keep the foundation wall stable, as the illustration below shows. The foundation wall may be an integral part of the load bearing design of the building carrying column and floor loads from above, either as distributed loads on the wall or point loads on pilasters integral to the wall system. The Foundation Protection System that Keeps Basements Dry Protecting your foundations from water and moisture is critical. In other cases, more extensive repairs may be needed. Cosella Dorken Products. 5 0 obj Originally published on GreenBuildingAdvisor.com. Location of the slip plane may vary depending on the design; however, it should be included in all assemblies. 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. Asphaltic coatings may be solvent- or water-based. Contractors like U.S. Waterproofing have a variety of options for tackling repairs from the inside. 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. This high strength non-woven geotextile is designed to protect the drainage composite during and after construction. No one size fits all, he said in a telephone call. Methods for concrete placement include cast-in-place between the lagging and interior forms, or spray applied shotcrete. Cementitious products are generally portland cement based and typically trowel-applied or brush-applied. The second area is the finish to the exterior near grade level. SikaBit Post-Applied Self-Adhered Membranes, Sika Drainage Mat 400 / 420 / 720 / 1000 / GRS, Sikaplan Pre/Post Applied Loose-Laid Membrane, SikaProof Pre-Applied Fully Bonded Membrane, SikaProof Post-Applied Waterproofing Membrane, SikaBit Post-Applied Self-Adhered Membrane, Variable flow and compressive strength configurations, High crush resistant configurations for vehicular traffic, Pre-assembled filtration and membrane protection layers. With drainage, both of these procedures are eliminated.3. In many cases the foundation wall is required to resist all of these loads directly with the wall designed as a cantilever retaining wall with a large base footing or as a basement wall spanning vertically between the foundation element and supported floors. Contact water/dampproofing membrane manufacturers for specific information regarding compatibility with FOAMULAR & FOAMULAR NGX INSUL-DRAIN boards. HYDRODUCT 220 is a strong, preformed 0.44 in. 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. Sika Drainage Mat September 2019, Version 01.03 020816110010000003 PRODUCT DATA SHEET . 8 sieve are suitable. Readers are advised to obtain expert advice when designing systems which are below the water table or which are enclosing particularly vulnerable occupancies. Its always better to treat the exterior, says Peter Barrett, product and marketing manager for Drken Systems Inc., which makes a variety of waterproofing products. 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|. Isolation, insulation and waterproofing of certain piping that undergoes large temperature changes are often underestimated for resulting movement. WBDG is a gateway to up-to-date information on integrated 'whole building' design techniques and technologies. Long-lasting Moisture Protection, Long-lasting Satisfaction Negative-side waterproofing systems are post-applied to the surface of the element opposite the surface exposed to moisture, typically the interior of the foundation wall. But, he adds, just as water makes the bentonite swell, a lack of water makes the panels shrink. 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. Condition appraisals and trouble shooting of below-grade structures reveals common sources of leakage that occur at penetrations. 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. 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