Penthouse terraces with artificial grass: a technical guide for a safe, cool, and moisture-free terrace
Owning a penthouse is one of the most valued housing options for those looking for something different: more light, a greater sense of space, and an outdoor area designed to be enjoyed at a relaxed pace. That’s why it has become one of the most attractive choices for people seeking something truly special in their home.
A well-designed penthouse allows you to make the most of every moment, creating areas for relaxation, leisure, and disconnection, turning the terrace into a true extension of the living space. When every detail is carefully considered, the penthouse can be enjoyed naturally, comfortably, and with peace of mind all year round.
On that journey towards a space made to be enjoyed, Turfgrass provides the finishing touch that makes the difference:
- A more comfortable penthouse
- A pleasant and aesthetic environment
- And the peace of mind of simply enjoying it
Installing artificial grass on a penthouse is an efficient technical solution to protect waterproofing and improve thermal comfort. For a guaranteed installation, three key pillars must be ensured:
- Unobstructed water drainage towards floor drains
- Ballasting or perimeter bonding to resist wind
- Selection of fibres with high heat dissipation capacity
Unlike other surfaces, its lightweight nature (less than 5 kg/m²) respects the building’s structural integrity.
Penthouse engineering: weight, slab and moisture management
Choosing Turfgrass for artificial grass installation on your penthouse means leaving behind many of the common drawbacks of other solutions. Still, there are three key concepts worth understanding before deciding and installing.
The weight myth
You may have seen neighbours or friends opting for ceramic paving on their penthouse. What is often overlooked is that, beyond creating a critical load on the slab, it also means giving up the key advantages of artificial grass.
In addition to its appearance and functionality, Turfgrass artificial grass stands out for being extremely lightweight. Its installation offers a benefit you won’t find in many alternatives: it does not compromise the structure. That means greater peace of mind and long-term safety.
The backing makes the difference
Experienced professionals know that achieving optimal terrace performance requires a smart installation. This means allowing the terrace’s water evacuation system to do its job properly.
At Turfgrass, we achieve this with our micro-perforated backing, designed to help water flow and drain, respecting the terrace’s original slope.
This is essential, as it allows the terrace to “breathe” and prevents water from becoming trapped beneath the grass when the base has been correctly prepared.
Slope gradient
There is one crucial factor to consider before installation: the terrace base must be sloped towards the drain. If your terrace already has standing water, artificial grass will not eliminate it.
In many failed installations, the issue is not the grass itself but the base: slopes are not corrected, or the owner is not properly informed. At Turfgrass, we prioritise technical honesty to avoid complaints and ensure long-lasting results.
To prevent pooling and water retention, the base must be correctly oriented towards the drain. If you need assistance, our team can advise you on a safe and durable solution.
Thermal comfort: enjoying your penthouse without the “oven effect”
You probably love your penthouse terrace, and in summer it becomes your personal sanctuary. Still, during the hottest hours of the day, the surface can overheat, limiting how long the terrace can be enjoyed.
Today, this issue can be significantly reduced with high-quality artificial grass and smart use. At Turfgrass, we address this with three key factors:
- Fibre density and premium polymers: higher density and quality polymers help reduce heat retention compared to low-grade synthetic materials.
- Smart maintenance: a 30-second cooling rinse can lower surface temperature thanks to controlled evaporation.
- Reflection and dissipation: artificial grass acts as a solar reflection barrier and encourages heat dissipation, preventing the concrete slab from accumulating excessive radiant heat.
After installation, the difference is usually immediate: a more comfortable surface underfoot and extended outdoor enjoyment, with a pleasant feel even on warm days.
Outdoor design and architecture: the penthouse as a multifunctional space
Stepping out onto a penthouse terrace changes everything. For many people, it’s the best way to start the day. That feeling becomes even stronger when the penthouse is designed as a multifunctional space, guided by outdoor design principles. Here are some professional ideas to elevate the final result:
- Transition zones: not everything needs to be green. Keep walkways in original tiles or combine with wood, for example in a barbecue area.
- Transition profiles: finish material junctions with aluminium or stainless steel profiles for a cleaner, more durable look.
- Green horizon: orient the grass fibres towards the main viewpoint of the terrace to maximise realism with natural light.
Buying guide: which Turfgrass model is best for your penthouse
To help you decide quickly, here’s a practical selection based on primary use:
Decorative / Chill-out use
Recommendation: fibres of 30–35 mm, offering the perfect balance between softness and easy cleaning. Our models Itaca, Neila, Oasis, Almavera, or Divino will transform your penthouse into a space for relaxing, entertaining guests, and enjoying barefoot comfort.
Family use / Children
Recommendation: 40 mm fibres for greater cushioning and play comfort. Models such as Oasis 40, Euphoria, or Wildflower 40 are designed for everyday living and active family use.
Pet-friendly areas
Recommendation: models with high drainage capacity and shorter fibres to make cleaning and hygiene easier. Standout options include Preto Plus, Styx, Itaca, or Turfplay Verde, offering excellent drainage and practical fibres for effortless maintenance.
Recommended Turfgrass artificial grass models for penthouses
Frequently asked questions about penthouse terraces with artificial grass
Does artificial grass cause moisture problems on terraces?
No, as long as it is properly installed and the base drains correctly towards the floor drain. The key is respecting the slope and using a system with micro-perforated backing.
What should be placed under artificial grass on a terrace?
It depends on the substrate. Geotextile mesh is commonly used, and for added comfort, a shock-absorbing outdoor base may be installed. The right solution depends on the condition of the surface and drainage.
How do you clean artificial grass on a penthouse?
Remove leaves and debris, brush the fibres, and clean with water and neutral soap. In high-use areas, periodic rinsing helps keep it looking like new.
Can wind lift artificial grass on a penthouse?
Yes, if it is not properly fixed. At height, a suction effect can occur. In exposed perimeters, joining tape and two-component polyurethane adhesive are recommended, avoiding simple tapes that lose effectiveness with heat cycles.
The opinion of the Turfexpert
If you want a penthouse terrace that is safe, cool, and moisture-free, keep these points in mind:
- Check drainage: without a slope towards the drain, artificial grass won’t solve water pooling.
- Choose quality: density and polymer quality directly affect thermal comfort and durability.
- On penthouses, secure the perimeter against wind with proper fixings.
- Design by zones: combine grass with tiles or wood and finish with profiles for a professional result.
At Turfgrass, we’ve spent years successfully installing artificial grass. We can help you choose the right model and carry out an installation that lets you focus on what truly matters: enjoying your terrace.
