Corrugated metal roofing is fireproof, insect-proof and resistant to storm damage from wind and hail when installed properly. Metal roofing is available in many colours to complement your home and surroundings. In hot climates a metal roof can also reflect excess heat, helping to keep the house cool in the summer. Installing it yourself can save a great deal in labour costs.
- Skill level:
Things you need
- Eye protection
- Vapour barrier
- Insulation for metal roofing
- Roofing nails
- Closure strips
- Galvanised screws
- Power screwdriver
- Galvanised roof panels
- Roof caulking
- Self-tapping metal roofing screws, including washers
- Ridge panel
Lay a vapour barrier directly on the rafters. This will prevent moisture from building up on the roof and dripping down into the room below. Nail the barrier to the rafters with roofing nails every 4 feet. Wear eye protection for this and all other steps.
Put the insulation on top of the vapour barrier. Be sure to use insulation made for use with corrugated metal roofing. Overlap the edges of the insulation to avoid gaps and attach with nails every 3 to 4 feet.
Place closure strips on the eaves all the way around the roof and screw them to the roof with galvanised screws, following the manufacturer's instructions. These strips prevent rain and wind from getting under the corrugated roofing.
Attach the corrugated panels to the roof with self-tapping metal screws intended for metal roofing. These screws have plastic washers to prevent roofing leaks. The panels should be installed beginning at the eaves on one corner of the house and working across the roof, moving toward the peak with each subsequent row. Panel sides and ends must overlap to prevent leakage. All four edges of each panel should be caulked as it is set in place to make it watertight.
Set the ridge panel to cover the peak of the roof, once the rest of the roof is covered with corrugated panels. Seal it well with caulking and screw it in place with self-tapping screws to complete the roof.
Tips and warnings
- Add fibreglass panels as skylights. These are not as durable as the metal panels, so use them judiciously.
- Observe caution when working on a roof, as falls can cause injury or death. Always wear eye protection to prevent injury from flying debris. Use care when working with power tools to avoid injury. Always follow manufacturer warnings.
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