Understanding Total Deck Tile Build-Up
The total height added by Cumaru deck tiles is more than just the thickness of the tile itself. It includes the tile's profile, plus any underlying support system. Cumaru deck tiles typically consist of individual wood slats attached to a plastic or wood base. This base elevates the wood from the substrate, allowing for drainage and air circulation. The combined height of the wood slats and the base forms the primary build-up.
If your project requires additional leveling or a raised floor system, such as pedestals, these components will add further height. Each element contributes to the final finished surface height, directly impacting the clearance needed for doors. It is essential to measure the exact thickness of your chosen Cumaru deck tile and confirm the height of any proposed support structure.
Key Measurements for Door Clearance
1. **Current Threshold Height:** Measure the vertical distance from the existing surface (e.g., concrete slab, balcony floor) to the underside of the door's lowest point when it is fully open. This is often the bottom edge of the door or a weather strip. Repeat this measurement at several points across the door's width, especially if the existing surface is uneven.
2. **Proposed Deck Tile Build-Up:** This is the total height of your Cumaru deck tile assembly. For example, a 12" x 12" or 24" x 24" Cumaru deck tile module will have a specific thickness, typically including its base. Add to this any shims, leveling compounds, or pedestal systems you plan to use beneath the tiles. If using pedestals, ensure you account for their minimum and maximum adjustable heights.
Compare these two measurements. The proposed deck tile build-up must be less than the current threshold height to allow the door to swing freely without obstruction.
Worked Example: Calculating Clearance for a Balcony Door
Let's consider a hypothetical balcony renovation using 24" x 24" Cumaru deck tiles. The existing surface is a concrete slab, and there's a sliding glass door leading out to the balcony.
**Step 1: Measure Existing Threshold Height.** With the sliding door fully open, measure from the concrete slab to the lowest point of the door frame's underside. Assume this measurement is 1.75 inches.
**Step 2: Determine Cumaru Deck Tile Build-Up.** You have selected 24" x 24" Cumaru deck tiles. Upon reviewing the product specifications, you find that each tile, including its integrated plastic base, has a total thickness of 1.25 inches. For this project, you plan to install them directly on the concrete slab without additional pedestals or shims, as the slab is level.
This should be sufficient for the door to operate freely, assuming no additional weatherstripping or door sweep interferes.
Considerations for Outward-Swinging Doors
Outward-swinging doors present a more direct challenge than sliding doors or inward-swinging doors. The arc of the door's swing will directly pass over the proposed deck tile surface. For these doors, the clearance calculation is even more critical. Ensure that the lowest point of the door, as it swings open, clears the deck tile surface across its entire arc. Sometimes, the leading edge of an outward-swinging door can dip slightly as it opens, requiring even more clearance than a static measurement might suggest.
If clearance is insufficient, options might include using a thinner deck tile system (if available), modifying the door (e.g., trimming the bottom, though this may impact weatherproofing and warranty), or exploring alternative surfacing materials. Always consult a professional for door modifications.
Accessibility Requirements and Ramp Transitions
For projects that must comply with accessibility standards (e.g., ADA guidelines), threshold heights and transitions become even more stringent. Typical residential door thresholds may be permissible at certain heights, but commercial or public access areas often have stricter limits on vertical changes and require ramped transitions for any elevation difference. If your project falls under such regulations, it is crucial to consult applicable building codes and accessibility guidelines before finalizing your deck tile plan. A ramped transition might be necessary to bridge the gap between the indoor floor and the Cumaru deck tile surface, ensuring a smooth and accessible pathway.
Complementary Products for Your Cumaru Deck Tile Project
Beyond the tiles themselves, consider other components that enhance your outdoor space. <a href="/deck-tiles">Deck tiles</a> in other species like <a href="/deck-tiles/ipe">Ipe</a> or <a href="/deck-tiles/garapa">Garapa</a> can offer different aesthetic choices for distinct zones or patterns. For structural support, especially on uneven surfaces or rooftops, adjustable pedestals can provide a level and stable base while allowing for drainage and access beneath the deck. Edge trim pieces, often made from the same Cumaru wood, can provide a finished look around the perimeter of your deck tile installation and address any slight height differences at the edges.
Before you order
- Measure existing door threshold height from the current surface to the lowest point of the door.
- Identify the exact total build-up of your chosen Cumaru deck tile, including any base or support system.
- Compare the threshold height to the deck tile build-up to determine available clearance.
- For outward-swinging doors, visualize the full arc of the door's swing to confirm continuous clearance.
- Consider any accessibility requirements and whether a ramped transition is necessary.
- Verify if any existing weatherstripping or door sweeps will interfere with the new deck height.
- Plan for any edge finishing pieces that might affect the transition at the door.
Confirm installation details, approved uses and warranty terms in the current instructions for the exact product and profile. Your installer should verify the substrate, structure and applicable project requirements.
Questions to help you decide
What if my door doesn't have enough clearance for Cumaru deck tiles?
If your door lacks sufficient clearance, you have a few options. You might consider an alternative deck tile system with a lower profile, or explore using thinner decking boards if the structure allows. In some cases, a carpenter might be able to trim the bottom of the door, but this can impact weatherproofing and should be done by a professional. Raising the door itself or modifying the threshold are more complex solutions that require expert consultation.
Can I install Cumaru deck tiles directly on an uneven concrete patio?
While Cumaru deck tiles can be installed on concrete, an uneven surface will lead to an uneven deck. For best results and proper drainage, the underlying surface should be as level as possible. Minor imperfections might be addressed with shims, but for significant unevenness, a self-leveling compound or an adjustable pedestal system is often recommended to create a stable and level sub-structure for your deck tiles.
How do I account for future door adjustments or replacements?
When planning, it's prudent to aim for slightly more clearance than the bare minimum, if possible. Documenting your measurements and the specific deck tile product used can also be helpful for any future renovations or repairs.
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