Artificial stone For Garden XL-02

Some utility installations are not just wide — they are wide and surrounded by extensive disturbed zones. A large concrete manhole cover (DN800 or larger) sits flush with the lawn, but its concrete frame, apron, and the ring of excavated soil extend far beyond the cover itself. An oversized septic inspection hatch (ø 70–85 cm) with a wide concrete surround creates a large industrial zone in the middle of the garden. A cluster of irrigation main valves, manifolds, and pipe connections spreads across a wide area that no single compact stone can cover.

These wide infrastructure zones create a specific design problem. The ø 80 cm coverage class (XL-01, M-03, L-01) cannot reach the edges. Even within the ø 90 cm class, the compact XL-04 (104 × 103 cm = 1.07 m²) covers the core object but may leave surrounding frames, aprons, and auxiliary infrastructure exposed.

The XL-02 resolves this with maximum dimensions on every axis. At 155 × 105 cm and only 26 cm peak height, it lies across the lawn like a massive flat field stone that has always been there. The 1.63 m² base area — the largest in the entire GARTENDEK range — covers not only the utility object itself but its frame, concrete apron, surrounding pipes, the disturbed soil ring, and the zone of disrupted lawn. One stone, one visual solution.

Natural flat stones of comparable dimensions weigh 800–1,500 kg and require heavy machinery. Budget plastic covers in this size category essentially do not exist — the few available are structurally inadequate. The XL-02 bridges this gap: realistic stone appearance, engineered composite strength, and a weight that two people can handle.

The XL-02 is a hollow shell with a massive wide profile — 155 × 105 cm at the base, rising from approximately 15 cm at the edges to 26 cm at the central peak. The interior provides a usable coverage diameter of ~90 cm — the maximum in the GARTENDEK range.

Installation takes under five minutes. Place the stone directly over the target object on any surface. No anchoring, no foundation, no tools. The massive base area (1.63 m²) provides excellent natural ground contact and stability.

Transport and placement require two people — at 23.50 kg and 155 cm length, comfortable handling needs two adults. Equipment access requires only one person — lift or tilt the stone to inspect or service the concealed installation, then lower it back. This is the key operational distinction for daily use.

Wind consideration — the large flat surface area (1.63 m²) can catch wind from below in exposed locations. In such cases, landscape anchoring stakes at the perimeter provide additional security, though this is not mandatory for most residential installations.

Seasonal behavior is neutral. The fiberglass composite structure does not absorb water, does not expand or contract meaningfully with temperature changes, and tolerates a continuous operating range from −30 °C to +60 °C. The stone performs identically in summer heat, autumn rain, and winter frost. It does not need to be removed, covered, or stored during any season.

Base contact — the stone has a non-sealed base and rests directly on the ground surface. It is not hermetically sealed; natural micro air exchange between the interior cavity and the surrounding environment is possible through the ground contact zone.

The XL-02 is constructed from a multi-layer fiberglass composite (GFK) — the same class of material used in boat hull construction, chosen for its strength-to-weight ratio and long-term weather resistance.

The outer surface is a marble chip and marble powder gelcoat of the ISO/NPG class. The color is not painted, printed, or applied as a film. Natural stone chips and stone dust of different colors are mixed directly into the gelcoat compound during manufacturing. The color and grain are embedded in the material itself, producing a surface that ages gracefully rather than peeling, flaking, or fading.

The product is handcrafted (In Handarbeit gefertigt) — color and dimensional deviations of 3–5 cm are within normal range and contribute to the natural stone appearance.

Compared with typical alternatives:

The XL-02 occupies a position that neither extreme can reach: far lighter and more practical than a natural flat stone of the same dimensions, far more durable and visually convincing than budget plastic — and uniquely combining a hollow interior with a load-bearing, marine-grade composite shell at a scale that no alternative product offers.

Maintenance is minimal. Clean occasionally with water and a soft brush. No sealing, repainting, or chemical treatment is ever required.

Large manhole cover concealment (DN800+)

The primary XL-02 application. A large concrete or cast-iron manhole cover (DN800 or larger) with a wide concrete frame and apron — the 155 × 105 cm base area hides the cover, frame, apron, surrounding pipes, and the entire ring of disturbed lawn. The ø 90 cm interior accommodates the widest residential covers.

Oversized septic hatch coverage

An oversized septic tank inspection hatch (ø 70–85 cm) with a wide surrounding concrete frame assembly — XL-02’s 1.63 m² footprint hides both the hatch and the entire frame structure, sitting naturally at ground level.

Irrigation valve cluster concealment

A cluster of irrigation main valve boxes, manifolds, and pipe connections spread across a wide area (up to ø 85 cm aggregate) — a single XL-02 covers the entire utility zone. Equipment remains accessible at any time.

Large underground distribution boxes

Cable, telecom, or gas distribution boxes and multi-compartment junction cabinets at grade level — the 155 × 105 cm footprint covers even large multi-section installations and their surrounding disturbed ground.

Wide well casing concealment

A sealed well casing with a wide concrete collar protruding 10–20 cm above grade — XL-02 covers the casing, collar, and surrounding disturbed soil within its 1.63 m² base area.

Large tree stump concealment

A cut tree stump (ø 75–85 cm) at near-ground level — the massive flat slab hides the stump, root plate, and the ring of disturbed soil around it, restoring a clean lawn line.

Utility cluster coverage

A grouping of garden utilities — electrical outlet box + water tap + irrigation valves — spread across a wide zone. One XL-02 covers the entire cluster instead of requiring multiple smaller stones.

Decorative landscape-defining accent

The 155 × 105 cm flat slab creates the impression of an enormous embedded glacial erratic — a landscape-defining centerpiece at property boundaries, beside large water features, or as the dominant focal point in expansive lawn areas. Many owners use it purely for decoration, without any concealment purpose.

The XL-02 is the flagship model of the XL-series and the largest artificial stone in the entire GARTENDEK range. It holds two absolute records: the largest exterior footprint (155 × 105 cm = ~1.63 m²) and the maximum interior coverage diameter ø 90 cm (shared with XL-04).

The critical comparison within the ø 90 cm class:

Both models provide ø 90 cm interior coverage. The selection parameter is total area to conceal:

• XL-04 (1.07 m²) — the object fits within ø 90 cm with minimal surrounding infrastructure. Compact, lighter, more affordable.
• XL-02 (1.63 m²) — the utility zone extends well beyond ø 90 cm: wide frames, concrete aprons, pipe clusters. XL-02 covers everything in one piece.

For comparison with smaller coverage diameters:

Choose the XL-02 when:

• The object to conceal exceeds ø 80 cm, requiring the ø 90 cm class
• The surrounding infrastructure zone (frames, aprons, pipes) requires maximum footprint coverage
• You need the largest possible single stone to eliminate all visible utility elements in one piece
• A landscape-defining massive boulder accent is desired

Consider a different model when:

• The object fits within ø 90 cm with minimal surrounding infrastructure — XL-04 (compact, lighter, €362.25 vs €551.89)
• The target object is ≤ ø 80 cm — XL-01 (ø 80 cm, €352.94) is more economical
• The target object is taller than ~21–23 cm — no current XL model covers this; consider L-series (heights up to 45 cm, ø up to 80 cm)

The XL-02 works as a standalone landscape centerpiece or as part of a multi-stone arrangement combining massive XL slabs with upright S, M, or L boulders for a varied, natural-looking stone grouping.

Does the XL-02 look realistic, or will people notice it is artificial?
The surface is formed from real marble chips and marble powder embedded in an ISO/NPG gelcoat — not painted. At normal viewing distance (1 m+), the XL-02 is not identifiable as artificial.

How many people are needed for installation?
Two people for transport and initial placement (23.50 kg, 155 cm length). For daily access, one person can lift or tilt the stone.

Will it fade or crack after years of outdoor use?
No. UV stability is built into the ISO/NPG gelcoat. Declared service life: 10+ years permanent outdoor exposure.

What is the maximum object size the XL-02 can cover?
Interior coverage diameter ~90 cm; peak height 26 cm (effective internal clearance ~21–23 cm). Footprint 155 × 105 cm (~1.63 m²) also covers wide frames/aprons.

Can I place it directly on grass or soil?
Yes. No site preparation. In exposed wind locations, anchoring stakes may be considered.

What is the difference between XL-02 and XL-04?
Both are ø 90 cm. XL-02 provides maximum footprint (1.63 m²) for wide infrastructure zones; XL-04 is compact (1.07 m²) and more affordable.

Can I step on it accidentally?
Yes. Supports 100+ kg static load.

Is the XL-02 available in different colors?
Yes — Red and Gray.

Can I drill holes for cables or pipes?
Yes. The GFK composite can be drilled or cut; walls are typically 10–15 mm thick.