Pergolas are generally known as a garden or outdoor structure which is made of vertical posts supporting a grid of cross-beams and rafters, normally uncovered. Like canopies, pergolas can be either a free-standing structure or attached to the property, which creates an additional covered outdoor space that can be used as a shaded walkway, hang plants, seating area to relax and entertain guests, or provide shelter over hot tubs or fire pits. A pergola without a roof allows extra exposure to nature and maintains an open-air feel to the covered space, which is what most users seek when it was built. However, adding a roof to a pergola can enhance both the functionality and aesthetics to this already practical outdoor structure.
Below is a list of benefits of putting a roof on a pergola, and shortly thereafter, we shall provide a couple of short but detailed instructions of the installation process.
Shield from rain, snow and and most elements, allowing outdoor enjoyment even in wet conditions, as it creates a dry and comfortable outer space.
Provides shade, reducing UV exposure and creating a cooler space beneath.
Extends the usable outdoor area, making it more enjoyable during hot summer days and light rain.
Reduces glare and heat, making it more comfortable for lounging, dining, or working outside.
Protects outdoor furniture from rain, sun damage, and fading.
Reduces heat absorption into adjacent windows and walls, lowering indoor cooling costs.
Adds a finished look to your pergola, increasing curb appeal and value.
Roof materials such as colored or shaded polycarbonate, can add an extra layer of privacy from neighboring houses.
A solid roof helps shield the area from gusty winds while allowing some airflow.
A covered roof wil allowed installation of outdoor lighting, such as string lights or chandeliers, enhancing nighttime usability.
A roofed pergola can be adapted for different uses, for example, outdoor activities such as dining al fresco or passive activities such as reading or board games will be less affected by wind and rain.
Covered pergolas will be usable year-round, especially if the roof is insulated or paired with side curtains for cold weather.
Local building codes may specify the type of materials permitted or requirements that have to be met before and after the construction. It may also specify the standards of which the building materials should comply with, which may affect the overall building cost.
Choice of roof types include: solid (metal, wood, shingles), transparent (polycarbonate panels, glass), retractable (fabric or canvas), or lattice roofs. The choice depends on the desired level of weather protection, light filtration, and aesthetics.
Take accurate measurements of the pergola’s dimensions (length, width, and height) to prepare sufficient material for the build, it is receommended to prepared slight more material than anticipated as a buffer in case of unexpected mistakes.
Choose the roof covering materials based on your climate, budget, and style preferences. Common options include:
The structure of the pergola will have to designed to support the covering material chosen. Naturally, full metal roofing sheets or glass panels will require a significantly stronger structure compared to polycarbonate panels or canvas covers. Reinforce the structure if necessary by adding extra support beams or bracing.
As previously mentioned, for heavier roofing materials such as metal roofing sheets and glass panels, you may need to install additional beams or rafters to provide proper support and minimize sag. Be advised that in *high wind or high snow load areas, extra support is also required.
Install flashing where the pergola meets the house to prevent water from seeping into the joint. This step is crucial for attached pergolas.
Depending on your choice of material, install panels or cover:
Use weatherproofing sealant around the edges of the roof, especially around any openings, joints, or where the pergola meets the house, to prevent water leakage.
For solid roofs, consider adding gutters or a drainage system to direct rainwater away from the structure.
Paint, stain, or treat the roof and pergola as needed for added protection and aesthetic appeal. You can also add lighting, curtains, or climbing plants for a more inviting look.
By adding a roof to your pergola, you transform it into a multi-functional outdoor space, perfect for year-round use. Whether for relaxation, dining, or entertaining, the roof provides essential weather protection and aesthetic value. It is also recommended to hire a professional contractor if unsure about the type of material to use or unfamiliar with the installation process.
*Extended reading: Please refer to the article “Wind Resistance Greenhouses: Guidelines for High Wind Areas!” for more information on how to build wind resistance Greenhouses in high-wind areas.