| 1 | Match the pergola to the usable area | Footprint and clearance | Common planning footprints include approximately 3 × 3 m for a compact seating area, 4 × 4 m for a larger lounge or dining area, and 6 × 4 m for expanded outdoor use. Allow extra space for posts, drainage, furniture movement, and door swings. | A pergola that is too small restricts furniture layouts, while an oversized structure can increase foundation, drainage, and permit requirements. | Measure the available length, width, and height; mark property boundaries; check overhead trees, balconies, utilities, and required setbacks. |
| 2 | Define the shade objective | Sun control and daylight | Adjustable louvered roofs commonly provide a broad opening range, often around 0–90°, depending on the design. For fabric systems, solar-screen openness is commonly specified in the 1%–10% range; lower openness generally blocks more direct sunlight. | The preferred balance between shade, ventilation, and daylight differs between hot, temperate, and low-sun regions. | Record the pergola’s orientation and the main sun hours. Ask for the roof opening angle, shading performance data, glare expectations, and maintenance requirements. |
| 3 | Specify rain-management needs | Roof drainage and waterproofing | A closed louver roof can direct water into integrated gutters and downpipes, but performance depends on the roof pitch, seals, drainage capacity, and installation quality. As a planning reference, rainfall intensity should be checked against local design storms rather than assumed from annual rainfall totals. | Short, intense storms can overwhelm undersized channels even in locations with moderate annual rainfall. | Confirm gutter outlets, downpipe locations, overflow protection, roof closure details, and whether the system is designed for fully closed rain conditions. |
| 4 | Adapt the specification to local climate | Wind, snow, heat, salt, and frost | Wind and snow resistance are project-specific structural values, not universal product figures. Coastal locations may require corrosion-resistant finishes and stainless hardware; cold regions may require a snow-load design and a procedure for removing snow before operation. | Climate loads affect post foundations, beams, louvers, fasteners, motors, and the safe operating procedure. | Provide the installation location, local basic wind speed, ground snow load where applicable, exposure to salt air, temperature range, and relevant building-code requirements. |
| 5 | Calculate annual usage and automation value | Days, hours, and operating cycles | Estimate use as days per year × hours per day. For example, 150 days × 4 hours equals approximately 600 usage hours per year. Add expected roof movements, screens, lighting, and heater controls to estimate annual operating cycles. | Frequent operation increases the importance of motor duty rating, control reliability, drainage access, and replacement-part availability. | Ask for motor duty-cycle limits, rated operating cycles, manual override options, service intervals, and the availability of replacement components in the destination country. |
| 6 | Check electrical compatibility | Power supply and controls | Residential mains commonly vary by region, including approximately 120 V at 60 Hz and 230 V at 50 Hz. Motors, control boxes, lighting, sensors, and accessories must be compatible with the destination supply and local electrical regulations. | Incorrect voltage or frequency can cause unsafe operation, premature failure, or non-compliance with local installation rules. | Confirm voltage, frequency, ingress-protection rating, circuit protection, cable routing, remote-control frequency, smart-home compatibility, and whether a licensed electrician is required. |
| 7 | Budget the complete installed system | Total cost of ownership | The installed budget should include the structure, foundation or anchoring, freight, import duties, local lifting equipment, electrical work, drainage connections, screens, lighting, permits, and future maintenance. A practical comparison should use a 10-year ownership period. | The quoted roof price may exclude site preparation, structural engineering, installation labor, taxes, and after-sales service. | Request a line-item quotation, packing dimensions and weights, warranty terms, corrosion coverage, installation scope, spare-parts policy, and local service responsibilities. |