If your home doesn't have gutters, you can still hang Christmas lights on the roof using specialized clips. Use roof clips designed to attach to shingles or fascia. For tile roofs or the edges of the rooftop, consider using parrot clips. Adhesive light-hanging clips are also a great option. It's important to avoid using nails or staples, as they can damage your roofing material. For unique or complex installations, it's best to consult a professional Christmas light installer to find the safest and most effective solution for your home.

If you’re building the roof trusses yourself, which isn’t recommended, it will be more affordable than buying pre-built trusses. Trusses cost more because they use the same amount of material, but you’ll also be paying for the labor, as well as the delivery to your home. However, if you’re having a contractor build the roof for you, then trusses will be less expensive, as the labor costs to build roof framing on-site will cost more.

Rain shouldn’t come in through your ridge vents unless your vents are damaged or the rain is accompanied by very high winds. Most ridge vents use flashing or baffling to keep out rain, snow, and debris. If your ridge vent isn’t baffled, rain is more likely to enter your attic, so ridge vents with baffles are a better choice in areas with regular rainfall.

Furring strips (also called wood stripping) are not always necessary for a metal roof installation, but they are highly recommended and may be required by local building codes or the roofing manufacturer's specifications. There are several key reasons to use them:

• Energy Efficiency: Furring strips, made of wood or metal, create an air gap between the metal panels and the roof deck. This acts as a thermal break, reducing heat transfer into your home and improving overall energy efficiency.

• Moisture and Condensation Control: The air gap allows for better airflow, which helps prevent moisture buildup and condensation under the metal panels.

• Structural Support: They provide a solid, even frame to which you can attach the metal roofing panels.

It is especially important to use furring strips when installing a metal roof over existing shingles. Without them, the roof surface can be uneven, and you will experience greater solar heat gain.