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Thermoclearpine-Terje-Ougandais

FAQs

Supporting Architects and Specifiers with Grad

Grad is an innovative Cladding and Decking solution

At Grad, we understand the importance of providing architects, specifiers, and designers with a reliable, versatile system for high-end cladding and decking projects. Our hidden fix system, designed for flawless finishes without visible screws, brings precision and elegance to any project. Here are some frequently asked questions from our CPD Sessions*.

 

*If you'd like to know more, please join one of our FREE CPD sessions or get in touch and let us show you how Grad can support you throughout the entire specification and design process.​​​

1. Do you do Bullnosed edges?

Yes, but it involves some specific setup:

  • Replacing the end clip with a half clip allows for an overhang, and using a longer length on the rail with a wedge clip provides additional support if stepped on.

  • There are aesthetic considerations with visible grooves if you choose a bullnosed overhang. This method is best applied where the grooves will not be seen, such as along a wall or with heavy planting.

  • Note: This approach may increase the time and effort required for installation.

2. Do you require a concrete slab below for levelling?

A concrete slab is not strictly necessary, but it’s one of several options for a stable base:

  • Grad rails can be installed on stabilised surfaces such as Type 1, Type 3, Grano-dust, waterproof membranes, paving slabs, or a full concrete bed.

  • Alternative supports include groundscrews, steel or HDPE frameworks, or timber joists.

  • For cladding, the rails can be mounted on posts, brickwork, or brackets, allowing flexible installation without impacting external insulation.

3. What is the longest length of timber supplied?

Timber lengths vary by species and availability at the time of order. Common lengths for each species include:

  • Moso Bamboo X-Treme & N-Durance: 1.85m

  • Thermo-Pine Decking: 3m to 4.8m

  • Thermo-Ash Decking 1.5m to 3.6m

  • Kebony: 1m to 4.8m

  • Accoya: 2.1m to 4.8m

  • Thermo-Spruce and Thermo-Ash Cladding: Ranges from 1.5m to 4.8m depending on style.

  • Custom lengths may be arranged upon request, but availability can vary.

4. What is the maximum height achievable with Grad adjustable pedestals?

Grad’s pedestals offer a variety of height adjustments depending on your project needs. For detailed configurations, please refer to the Pedestal Heights attachment, which outlines possible combinations of boosters and stabilisers to reach the desired height:

  • Base Pedestal Height: Minimum deck height of 86mm to maximum height of 408mm. 

5. Can you create curved edges with Grad decking?

Yes, although curved edges require a customised setup:

  • Rails should be positioned as close to the edge of the curve as possible, with additional support rails in between.

  • Options for concealing exposed edges include metal edging, planting, or a cladding frame using mini rails.

  • Note: Grad does not currently have a specific solution for creating curved fascias directly.

6. Is there a risk of timber decking needing upkeep over its lifespan?

Yes, as with any natural timber product, upkeep is recommended:

  • Regular maintenance such as cleaning and applying protective treatments will help preserve the timber’s appearance and durability.

  • The type and frequency of maintenance can vary based on environmental conditions and timber species.

7. How can I prevent decking from becoming slippery in wet conditions?

The domed profile of the boards improves water run-off, meaning the time that the boards take to dry is reduced which helps the boards get back to being less slippery. Because there is less standing water, algae growth is reduced. Maintenance is required on any materials used, including composite, in order to maintain a clean, slip free surface. Our board partners can recommend further how to keep their boards looking good and how often maintenance is required.

8. Can Grad’s system support chevron or diagonal laying patterns?

Yes, the Grad system can support chevron and other angled patterns, although it may require specific layout planning. Adjustable clips can assist with non-parallel board orientations to create intricate designs. Any angles can be adjusted to suit whatever design you choose, allowing you to be as creative as you like.

9. What fire safety solutions does Grad offer for cladding projects?

Grad offers innovative cladding solutions designed to address critical fire safety challenges, including compliance with international standards like EN 13501-1. Our systems, including the Pyroclip and fire-treated materials, provide enhanced protection while maintaining the aesthetic and functional benefits of Grad's hidden-fix system. For more detailed information, check out our Cladding Fire Solutions brochure here.

10. What are the corner options for Grad cladding and decking?

For corners, you have options:

  • Corner Profiles: These can be used to create a clean finish, especially for cladding.

  • Mitre Joints: For a more integrated appearance, boards can be joined at corners with a mitre joint finish.

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