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Artificial grass does not absorb rainwater through its synthetic blades in the way soil or natural roots do. For the water-play product described in the available documentation—ForeverLawn SplashGrass—water is intended to pass through perforations or a flow-through backing and into a prepared drainage base below. That means wet-weather performance depends on the entire installed system: the turf layer, seams, grade, base material, compaction and the site’s ability to carry water away.
The answer is therefore “it drains through, rather than absorbs.” SplashGrass was introduced for water-play areas and landscaping, and the manufacturer’s current specification lists no infill and a flow-through backing. Those are product-design details, not an independent guarantee of a particular flow rate, rainfall capacity or result on every soil and slope.
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Artificial grass is generally designed to let water move through the turf construction. The reviewed ForeverLawn FAQ says its turf is perforated throughout so water can flow into a drainage base underneath, while the SplashGrass specification identifies a flow-through backing. The evidence supports permeability at the turf layer; it does not say that the synthetic fibers themselves absorb water.
In practical terms, rain lands on the blades and backing, travels through openings, and reaches the aggregate or other prepared base beneath. From there, the base and the surrounding site must convey the water away. If the underlying ground is poorly graded, compacted incorrectly or slow to drain, a permeable turf surface cannot solve that problem by itself.
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The word “absorb” can create the wrong expectation. Natural grass and soil can temporarily store water in organic material and pore spaces. Synthetic turf’s relevant function here is controlled passage of water, not water uptake by living roots. The manufacturer’s specification uses the phrase “Completely drainable”; that is a company product statement, not a published independent test result.
What is SplashGrass, and what does the product documentation say?
The specific product discussed in the source material is ForeverLawn SplashGrass, a synthetic surface described for water-play areas and landscaping. A 2010 article in Building Design + Construction described a proprietary flow-through backing, a thatch zone holding the grass blades and a design with no infill. The article presented the no-infill approach as useful around pools because displaced infill would not end up in the pool or on guests, and it associated the design with less maintenance.
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Those statements should be read as descriptions and claims in that 2010 product item. They are not a comparative maintenance study or an independent drainage measurement. The current product sheet is more specific about the version: the SplashGrass WAVE specification, M0310A Rev. 04/25, lists a 7/8-inch blade height, flow-through backing, no infill and turf adhesive for seaming.
How does water move through the installed turf system?
Drainage is a sequence rather than a property of the visible blades alone:
- Surface contact: Rain, splash water or runoff reaches the turf and moves between the blades.
- Turf passage: Openings in the turf construction and the flow-through backing allow water to move below the surface.
- Base distribution: Water enters the specified drainage base. Its material, thickness, grade and compaction affect how quickly water spreads or moves onward.
- Site discharge: The prepared slope, perimeter details and connected drainage route carry water away from the play area or landscape.
The FAQ’s installation description includes removing and grading the existing area, installing perimeter boards, placing prescribed base material, compacting it, and then laying, cutting and seaming the turf. These steps explain why two installations using the same roll of turf can behave differently. A blocked outlet, a low spot or an unsuitable base can leave water standing even when the turf layer itself is permeable.
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Neither the FAQ nor the specification supplies a flow rate, rainfall-intensity limit, ponding time, soil-by-soil performance chart or comparative drainage test. Do not convert “flow-through” or “completely drainable” into a promise that every installation will clear a storm immediately.
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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallWhat do the blade-height specifications mean?
The source material contains two different dimensions from two different documents and dates. The 2010 Building Design + Construction item described one-inch-tall blades. The later SplashGrass WAVE specification, marked M0310A Rev. 04/25, lists a 7/8-inch blade height. They should not be silently merged or treated as the same specification.
| Source | Product or description | Blade height stated | Other relevant detail |
|---|---|---|---|
| Building Design + Construction, Aug. 11, 2010 | SplashGrass product item | One inch | Describes flow-through backing, a thatch zone and no infill |
| ForeverLawn specification, M0310A Rev. 04/25 | SplashGrass WAVE | 7/8 inch | Lists flow-through backing, no infill and turf adhesive for seaming |
Blade height is a construction specification, not a drainage-performance statistic. A smaller or larger stated blade dimension does not, by itself, establish how much water the installed surface can pass.
Why does the base matter as much as the turf?
The base is the part of the system that receives water after it passes through the backing. If it is uneven, contaminated with fine material, inadequately compacted or unable to connect to a suitable outlet, water can slow down or collect beneath the turf. The manufacturer’s FAQ links drainage to the prepared base and describes site preparation as part of installation rather than an optional finishing step.
Before specifying or installing a permeable surface, confirm where water will go during ordinary rain and during the site’s design storm. Check grades around pool decks, play features, buildings and property lines. Identify any existing drains, utility conflicts or impermeable subgrades. Where local codes, engineered drainage plans or water-play requirements apply, those controls take precedence over a general product description.
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A permeable backing also does not make every surrounding surface permeable. Water can still run onto the turf from a roof, paving or a sloped adjoining area, creating a larger load than the turf would receive from rainfall alone. The drainage path should be evaluated for the combined catchment, not just the square footage of grass.
How should SplashGrass be installed for wet-weather drainage?
Use the manufacturer’s current installation directions and have the site prepared for the expected water load. The available FAQ identifies the following sequence; exact dimensions, materials and local requirements should come from the current project specification.
- Remove unsuitable material and grade the area. Strip the existing surface as required and establish the intended elevations and slope. Eliminate depressions that would become collection points.
- Install perimeter restraint. The FAQ describes perimeter boards. They help define the edge and provide a stable boundary for the turf and base assembly.
- Place the prescribed base. Use the base material and depth specified for the project. A decorative layer or random fill is not a substitute for an engineered drainage base.
- Compact the base consistently. Inconsistent compaction can create soft areas, settlement or low spots that interrupt the drainage plane.
- Lay and cut the turf. Position the rolls so seams and traffic patterns suit the layout. Avoid creating folds or trapped pockets that can hold water.
- Seam the sections correctly. The WAVE specification names turf adhesive for seaming. Follow the adhesive manufacturer’s surface, temperature, curing and coverage requirements rather than improvising a seam treatment.
- Inspect outlets and edges before opening the area. Verify that drains, swales or discharge routes are clear and that the finished surface directs water where the plan requires.
For a pool or water-play installation, coordinate the turf, surrounding hardscape and drainage details as one assembly. Splash water can arrive from several directions, and the no-infill design described in the product material does not remove the need for a sound sub-base and outlet.
Does no infill make artificial grass easier to maintain?
The 2010 product article says SplashGrass uses no infill and presents that as a way to avoid displaced infill entering a pool or landing on guests. It also associates the design with less maintenance. Those are product claims reported by the article, not results from a named comparative maintenance study.
No infill does not mean no maintenance. Operators still need to remove leaves and debris, keep drains and perimeter channels open, inspect seams and edges, and address sediment or organic buildup that could obstruct openings. The appropriate cleaning method depends on the installation, the type of contamination and any pool or public-health rules that apply.
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Likewise, no infill does not mean that water will always disappear at the same speed. The absence of loose infill may simplify cleanup in a splash zone, but the base and site drainage remain decisive.
What can the available evidence prove—and what can’t it prove?
The documentation supports four narrow conclusions:
- SplashGrass is a named synthetic surfacing product for water-play areas and landscaping.
- Its described drainage mechanism is passage through perforations or a flow-through backing into a base below, not absorption by synthetic fibers.
- The product information specifies no infill, and the current WAVE sheet lists turf adhesive for seaming.
- Site preparation and the drainage base are part of the installed system.
The reviewed sources do not provide an independent named study, laboratory flow rate, rainfall-capacity figure, comparative test against another turf, safety certification, or performance result for every soil type, climate, slope or installation detail. The blade dimensions are product specifications, not measured drainage outcomes. A responsible specification should therefore state the product features and then verify the project’s base, grade and discharge design separately.
How can you diagnose standing water after rain?
First determine whether the water is on top of the turf, trapped at a seam or edge, or accumulating in the base below. Mark the location and observe whether it repeats after similar weather; recurring ponding usually points to grade, settlement, a blocked outlet or a base problem rather than to absorption by the blades.
- Clear leaves, soil and other debris from nearby drains, channels and edges.
- Check for visible wrinkles, loose seams or depressed areas that could hold water.
- Confirm that perimeter restraints and transitions have not shifted or formed a dam.
- Review the original grading and base records, including any areas repaired or excavated after installation.
- Ask the installer or a qualified drainage professional to inspect the base and outlet before cutting into the turf.
Do not drill random holes through the surface as a first remedy. Unplanned openings can damage the backing, weaken seams and still fail to provide a route through a poorly draining base.
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What should a buyer or project manager ask before choosing permeable turf?
Ask for the exact product and revision, not just the phrase “artificial grass.” Confirm whether the quoted material is SplashGrass WAVE or another construction, its stated blade height, backing design, infill requirement and approved seaming method. Request the current installation instructions and identify who is responsible for grading, base preparation, compaction and final drainage connections.
Also ask which claims are specifications and which are supported by independent measurements. If a contractor promises a particular clearance time or storm capacity, request the test method, site assumptions and written warranty terms. The sources reviewed here do not establish a universal performance number, so a project-specific drainage plan is more informative than a marketing adjective.
Is artificial grass a sensible choice for a wet area?
It can be, when the proposed turf is compatible with the use and the underlying drainage is designed correctly. SplashGrass was specifically described for water-play areas and landscaping, and its flow-through backing and no-infill construction address two concerns that can matter around splash zones.
It is not a substitute for civil or landscape drainage design. Sites with heavy runoff, high groundwater, clay subgrades, steep slopes or strict discharge limits need an assessment of the complete assembly. The right question is not merely whether the blades “absorb” water, but whether the installed surface, base and outlet provide a documented path for the water the site will receive.
Frequently Asked Questions
Will artificial turf stay soggy after a heavy storm?
It may if the base, grade or outlet cannot move the incoming water, even when the turf backing is permeable. The available product documents do not publish a universal storm-capacity or ponding-time figure, so site drainage must be checked separately.
Can I use ordinary infill under a water-play turf?
Do not assume so. The SplashGrass materials describe a no-infill construction, and adding a different material could change drainage, cleanup and surface behavior; use the exact current product and installation specification.
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Is the one-inch SplashGrass measurement still current?
The one-inch figure belongs to the August 2010 Building Design + Construction description. The current SplashGrass WAVE sheet marked M0310A Rev. 04/25 lists 7/8 inch, so confirm the revision quoted in any estimate.
What adhesive is specified for SplashGrass seams?
The M0310A Rev. 04/25 WAVE specification names turf adhesive for seaming. The correct product, coverage and curing conditions should come from the current specification and adhesive instructions for the installation environment.
