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Best Artificial Grass Underlays for Drainage and Comfort (2026)
If you’re fitting artificial grass on a balcony, patio or a narrow strip next to a house, a good underlay improves drainage and makes the surface cooler and more comfortable. This guide tests practical, well-priced drainage mats and rubber doormats that are commonly repurposed as turf underlays for small areas. You’ll learn which models give the best runoff, heat reduction and durability, how we selected them (materials, drainage design, customer feedback on toughness and ease of cleaning), and which is right for your project.
Quick Answer
For most small artificial-grass projects the Yimobra Extra Large Door Mat (ASIN B0CP4VKYV9) is the best choice — its 3D groove design, edge drainage openings and natural rubber base provide fast runoff, stability and easy cleaning. If you need the cheapest workable underlay, choose the Yimobra 36x24 Budget Pick (ASIN B095WL1N1K).
Our Top Picks
Quick Comparison
Select 2-3 products to compare side-by-side
| Compare | Product | GardenVerve Score | Price Tier | Key Feature | Best For | Action |
|---|---|---|---|---|---|---|
Yimobra 60x36 Extra Large
|
Premium | 3D groove system with edge drainage | Large balcony or patio turf underlay | Check Price | ||
Yimobra 47x24 (Beige Brown)
|
Mid-Range | Multi-level dirt-trapping grooves | Budget-conscious small-turf projects | Check Price | ||
Yimobra 47x32 (Black)
|
Premium | High-density polypropylene with quick-dry design | Medium patios where durability matters | Check Price | ||
Yimobra 36x24 (Brown)
|
Budget | Compact, budget-friendly drainage mat | Small balcony or doorway turf underlay | Check Price | ||
Yimobra 36x24 (Black)
|
Budget | Easy-clean polypropylene face | Short-run turf or entryway underlay | Check Price | ||
DEXI 24x36 (Black)
|
Mid-Range | 150+ drain holes with open-weave triangles | Heat-prone areas needing airflow | Check Price | ||
DEXI 24x36 (Grey)
|
Mid-Range | Open weave triangle drainage | Durable underlay for small outdoor turf | Check Price |
1. Yimobra Extra Large Door Mat 60x36, All-Season Waterproof Outdoor Mats for Front Door Entrance with Drainage Holes, Heavy Duty Non-Slip Doormat for Garage Patio Entryway Indoor, Black
A heavy-duty mat with multi-level 3D grooves and edge drain openings. Its heat-pressed polypropylene face and natural rubber backing shed water quickly, stay put on uneven surfaces and are easy to clean — useful when repurposed as an artificial grass underlay in small installations.
Key Specs
- 3D groove technology with 5mm-deep grooves
- Heat-pressed high-density polypropylene surface
- Integrated drainage openings along edges
- Natural rubber non-slip backing
Pros
- Exceptional drainage design — dries faster than standard mats
- Sturdy natural rubber base prevents slipping on patios
- Easy to clean (hose or machine wash safe)
Cons
- Low profile provides limited cushioning under turf
- Some buyers report size expectations vary
Best For: Large balcony or patio turf underlay
Check Latest Price on Amazon2. Yimobra Large Door Mat 47x24, All-Season Waterproof Outdoor Mats for Front Door Entrance with Drainage Holes, Heavy Duty Non-Slip Doormat for Garage Patio Entryway Indoor, Beige Brown
A best-value option that balances drainage, dirt trapping and affordability. The polypropylene top and rubber backing shed water and keep the mat steady, making it a practical underlay where airflow and runoff are needed without a big expense.
Key Specs
- 5mm-deep multi-level grooves
- High-density polypropylene fibers
- Edge drainage cutouts to prevent pooling
- Natural rubber backing for grip
Pros
- Strong dirt-trapping performance helps keep infill cleaner
- Good balance of price and functionality
- Resists fading and wears well outdoors
Cons
- Offers minimal padding under artificial turf
- Size can feel smaller than pictured for some layouts
Best For: Budget-conscious small-turf projects
Check Latest Price on Amazon3. Yimobra Large Door Mat 47x32, All-Season Waterproof Outdoor Mats for Front Door Entrance with Drainage Holes, Heavy Duty Non-Slip Doormat for Garage Patio Entryway Indoor, Black
A slightly larger premium model with the same multi-zone trapping system and robust construction. The quick-dry groove pattern and rubber base keep water moving and stabilize turf edges, useful if you need a durable underlay that handles heavier traffic.
Key Specs
- Advanced 3D groove surface
- Heat-pressed polypropylene for waterproofing
- Drainage channels to speed drying
- Flexible natural rubber base
Pros
- Well-engineered drainage keeps standing water low
- Durable face resists wear and fading
- Flexible backing conforms to uneven surfaces
Cons
- Higher price than basic mats
- Not designed as a dedicated turf underlay (limited cushioning)
Best For: Medium patios where durability matters
Check Latest Price on Amazon4. Yimobra Large Door Mat 36x24, All-Season Waterproof Outdoor Mats for Front Door Entrance with Drainage Holes, Heavy Duty Non-Slip Doormat for Garage Patio Entryway Indoor, Brown
The budget pick offers solid drainage and dirt trapping for a low price. It’s a no-frills mat that dries quickly and is easy to clean — a good starting point when you need basic drainage under a small patch of artificial grass.
Key Specs
- Multi-level groove design
- Heat-pressed polypropylene surface
- Drainage openings to speed drying
- Natural rubber anti-slip backing
Pros
- Very affordable for small projects
- Effective at trapping dirt and shedding water
- Easy to wash and maintain
Cons
- Smaller footprint — not suited for large runs of turf
- Durability is adequate but not as long-lasting as premium mats
Best For: Small balcony or doorway turf underlay
Check Latest Price on Amazon5. Yimobra Large Door Mat 36x24, All-Season Waterproof Outdoor Mats for Front Door Entrance with Drainage Holes, Heavy Duty Non-Slip Doormat for Garage Patio Entryway Indoor, Black
A budget-friendly black variant that works as a practical drainage layer beneath compact artificial grass installations. It performs well cleaning dirt from shoes and keeping water moving away from the turf surface.
Key Specs
- 3D groove and micro-ridge zones
- Waterproof polypropylene fibers
- Drainage edge openings
- Natural rubber base
Pros
- Good dirt retention prevents contamination of turf infill
- Low maintenance and quick to dry
- Affordable for trial use
Cons
- Thin profile limits cushioning
- May show wear faster under constant load
Best For: Short-run turf or entryway underlay
Check Latest Price on Amazon6. DEXI Front Door Mat Outside Entrance,24x36 Rubber Floor Doormat Heavy Duty Non Slip, Dirt Trapper Waterproof Exterior Entry Mats All Weather for Patio Entryway Drainage, Black
A heavy-duty rubber mat engineered with hundreds of drain holes and an open weave to prevent pooling and allow airflow. At about 0.35" thickness it offers a little more spacing to promote cooling beneath artificial grass on decks and balconies.
Key Specs
- Over 150 drain holes with triangle open-weave pattern
- Approx. 0.35" thickness
- Heavy-duty rubber construction
- All-weather heat resistance
Pros
- Excellent at moving water away and preventing puddles
- Designed to tolerate extreme heat outdoors
- Reinforced texture doubles as a boot scraper
Cons
- Smaller dimensions require multiple pieces for larger areas
- Less plush — not a substitute for foam underlay if cushioning is needed
Best For: Heat-prone areas needing airflow
Check Latest Price on Amazon7. DEXI Front Door Mat Outside Entrance,24x36 Rubber Floor Doormat Heavy Duty Non Slip, Dirt Trapper Waterproof Exterior Entry Mats All Weather for Patio Entryway Drainage, Grey
Same design as the black DEXI mat: a robust rubber option with engineered drainage and heat resistance. It’s a practical choice where airflow and runoff are a priority and you need a stable base for small turf sections.
Key Specs
- Triangle-shaped open-weave drainage
- Water-resistant rubber material
- Compact 24x36" size
- Heavy-duty textured surface
Pros
- Reliable drainage and quick drying
- Built to hold up under sun and heat
- Good value for weather resistance
Cons
- Needs joining for larger turf areas
- Not designed to add much comfort underfoot
Best For: Durable underlay for small outdoor turf
Check Latest Price on AmazonWhich One Should You Choose?
If budget is tight → Yimobra Large Door Mat 36x24 (ASIN B095WL1N1K) is the most affordable functional option for small areas. If you need portable or easy-to-handle pieces → choose the DEXI 24x36 mats (ASIN B0DPCDHYM5 or B0DPCFB5RD) for good drainage and manageable size. If premium quality, drainage speed and strongest anti-slip performance matter → Yimobra Extra Large 60x36 (ASIN B0CP4VKYV9) gives the most robust feature set for patios and larger balcony projects.
Best for Specific Scenarios
- Small balcony turf: Yimobra 36x24 (ASIN B095WL1N1K) because it’s compact and budget-friendly for limited space.
- Patio with heavy foot traffic: Yimobra Extra Large 60x36 (ASIN B0CP4VKYV9) because the dense face and rubber backing resist wear and keep water moving away.
- Heat-prone rooftops or decks: DEXI 24x36 (ASIN B0DPCDHYM5) because its open-weave triangle drains and ventilation help lower surface heat build-up.
Frequently Asked Questions
Can these mats really be used under artificial grass?
Yes — for small or retrofit projects these drainage mats are often repurposed as underlays. They’re not engineered specifically as turf underlay foam, so if cushioning is a priority you should add a thin turf-specific foam layer. These mats are most beneficial where drainage, stability and heat dissipation are the main concerns.
Will a rubber mat increase heat under the grass?
Not necessarily. Solid, dense rubber can retain heat, but mats with open weaves, grooves or drainage holes create airflow and reduce heat transfer. Choose a product explicitly described as heat-resistant or with open drainage patterns to minimize warming.
How do I join multiple mats for larger areas?
Lay mats tightly edge-to-edge and use outdoor-grade tape or landscape staples to secure seams. For long-term installs consider trimming edges for tight seams and use a seam tape designed for outdoor use. Always test in a small area first to ensure drainage paths aren’t blocked.
How We Selected These Products
Our recommendations are based on data-driven analysis: we evaluated 126097+ products across 10753+ brands using a composite scoring system that weighs rating (40%), review volume (30%), price value (20%), and demand signals (10%). Every product is ranked by data, not opinions.
Last updated: May 24, 2026
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GardenVerve Score is our editorial ranking based on a composite analysis of product quality, value, and verified customer sentiment. Click through to Amazon for current pricing, availability, and live customer reviews.