Understanding Your Elevated Space: Balcony vs. Rooftop
The first step in planning a deck tile project is to accurately categorize your elevated space. A balcony typically extends from a building wall, often supported by cantilevers or columns, and is usually directly accessible from an interior living space. Rooftops, on the other hand, are the structural top of a building, often designed to be walked on as a terrace or to house mechanical equipment. The distinctions impact structural capacity, waterproofing, and accessibility.
Balconies often have lower weight-bearing capacities and more constrained layouts, with fixed railings and limited space. Rooftops, especially those designed as terraces, may offer larger, more open areas but require rigorous attention to the underlying roof membrane and drainage systems. Both scenarios demand a review of local building codes and, if applicable, condominium or homeowner association rules for modifications and material selections.
Essential Site Assessment: Thresholds, Drainage, and Structure
Before selecting deck tiles, perform a thorough site assessment. Measure the height of all door thresholds to ensure that the installed deck tiles do not impede door operation or create trip hazards.
Examine the existing drainage system. Rooftops and balconies are designed with a slope to direct water to drains or scuppers. Your deck tile assembly must not obstruct this flow. Consider how water will move through and under the deck tiles to reach the existing drainage points. For pedestal systems, ensure the pedestals are compatible with the slope and do not create damming. For interlocking tiles, verify that the base allows adequate water passage.
Finally, assess the structural integrity of your balcony or rooftop. This may require consulting with a structural engineer, especially for older buildings or if you plan to add significant weight, such as large planters or heavy furniture. Confirm the existing surface material—whether concrete, a waterproofing membrane, or another substrate—and its condition to determine the appropriate deck tile installation method.
Choosing Deck Tile Materials and Sizes
Lumber Plus offers deck tiles in various hardwood species and sizes, each with distinct characteristics. Ipe deck tiles are known for their deep chocolate tones and durability, offering a classic hardwood look. Garapa deck tiles provide warm golden tones, suitable for brighter outdoor spaces. Cumaru deck tiles feature rich reddish-brown grains, combining strength with character.
Deck tiles are available in two primary sizes: 12 x 12 inches and 24 x 24 inches. The 12 x 12 inch tiles (1 square foot per tile) are a compact format often suitable for smaller areas or layouts with more intricate edges and transitions. The 24 x 24 inch tiles (4 square feet per tile) are a larger format, ideal for more expansive terraces and open surfaces where fewer tile seams are desired.
Your choice of material and size should align with your aesthetic preferences, the functional demands of your space, and the practicalities of installation. For example, larger tiles might be quicker to install on a wide-open rooftop, while smaller tiles could offer more flexibility for an irregularly shaped balcony with many cuts.
Installation Methods: Interlocking vs. Pedestal Systems
Deck tiles can be installed using different methods depending on the existing surface and desired functionality. Interlocking deck tiles typically connect directly to each other, forming a continuous surface. They are often suitable for relatively flat, stable surfaces and can be a DIY-friendly option for balconies.
Pedestal systems elevate deck tiles above the existing surface, creating a void for drainage and allowing for minor leveling adjustments. This method is particularly useful for rooftops with waterproofing membranes, as it avoids direct contact with the membrane and preserves its integrity. Pedestals also facilitate access to the underlying roof for maintenance or repairs.
When considering a pedestal system, verify that the chosen pedestals are compatible with your specific deck tiles and can accommodate the slope of your rooftop or balcony. Ensure the pedestals are designed to withstand the environmental conditions in Spokane, WA, including potential freeze-thaw cycles. Always confirm manufacturer recommendations for spacing and support.
Worked Example: Planning a 10' x 12' Balcony with 24" x 24" Deck Tiles
Let's consider a hypothetical 10-foot by 12-foot rectangular balcony in Spokane, WA, with a single door threshold that is 2.5 inches above the existing concrete slab. The balcony slopes gently towards a scupper drain at one corner. We want to use 24 x 24 inch Garapa deck tiles.
First, address the threshold. If we aim for a finished height 1 inch below the threshold, the deck tile surface will be 1.5 inches above the concrete slab. This height can be achieved with adjustable pedestals.
Next, calculate the number of tiles. The balcony is 120 inches by 144 inches. Since each tile is 24 inches square, we would need 120/24 = 5 tiles along the 10-foot side and 144/24 = 6 tiles along the 12-foot side. This means 5 x 6 = 30 full tiles are needed. Since the dimensions are exact multiples of 24 inches, no edge cuts are strictly necessary for the main field, but cuts may be required around columns or other obstructions. In this ideal scenario, 30 tiles would cover 120 square feet.
For drainage, the pedestal system will allow water to flow freely beneath the tiles to the scupper, provided the pedestals are correctly adjusted to maintain the existing slope. Always account for potential waste when ordering, typically adding 5-10% extra for cuts or unforeseen issues. For this project, ordering 33 tiles would provide a small buffer.
Before you order
- Have I verified local building codes and any HOA/condo rules for deck tile installation?
- Have I measured all door thresholds and planned for adequate clearance?
- Have I assessed the existing drainage system and confirmed the deck tile assembly will not impede water flow?
- Is the existing surface (concrete, membrane) in suitable condition for the chosen installation method?
- Have I consulted a structural engineer if there are concerns about load capacity for my balcony or rooftop?
- Which deck tile material (Ipe, Garapa, Cumaru) best suits my aesthetic and functional needs?
- Which deck tile size (12x12 or 24x24) is most appropriate for my space and layout?
- Will I use an interlocking system or a pedestal system, and have I selected compatible components?
- Have I accounted for waste and ordered extra tiles (typically 5-10%)?
- Do I have a plan for maintaining the deck tiles and the underlying surface?
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.
This is a planning guide for projects in Spokane, WA. Ask our team to confirm availability, delivery to your ZIP code and which branch can support your order.
Questions to help you decide
Do I need a permit to install deck tiles on my balcony or rooftop in Spokane?
Permit requirements vary depending on the scope of work and local regulations. Minor installations of interlocking deck tiles that do not involve structural changes or alter the building's exterior appearance might not require a permit. However, projects involving pedestal systems, significant changes to drainage, or any structural modifications typically do. It is always best to check with the City of Spokane's Building Department or your building management before starting any project.
How do I ensure proper drainage with deck tiles on a rooftop?
To ensure proper drainage on a rooftop, use a pedestal system that elevates the deck tiles above the roof membrane. This creates an air gap and allows water to flow freely beneath the tiles to the existing drains or scuppers. Ensure the pedestals are adjusted to maintain the roof's slope. Avoid any installation method that could trap water or impede the flow to the designated drainage points. Regular cleaning of the roof drains is also essential.
Can I install deck tiles directly over a waterproof membrane?
While some interlocking deck tiles might be placed directly on a very robust membrane, it is generally recommended to use a pedestal system when installing deck tiles over a waterproof membrane. This prevents direct contact, which can protect the membrane from abrasion and potential damage. A pedestal system also allows for better air circulation and drainage, which is crucial for the longevity of the membrane and the deck tiles themselves.
Ready to Plan Your Spokane Deck Tile Project?
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