Metal Roofs - PROS & CONS

Metal roofs provide many benefits such as longevity, durability and even energy efficiency.  As a durable option over traditional asphalt shingles, they are virtually weather resistant but also have the added bonus of being environmentally friendly.  Because of their versatility, we see many metal roofs on residential and commercial buildings. Here is a quick breakdown of the pros and cons to having a metal roof installed.

PROS:

1.      Long Lifespan – metal roofs can significantly outlive a shingle roof.  Most metal roofs can last 40+ years. 

2.     Weather Resistant – metal roofs can withstand heavy winds & snow loads, as well as extreme heat.  

3.     Impact Resistant – metal roofs can withstand impacts from hail or other debris while maintaining their durability. 

4.     Corrosion Resistant – metal roofs are usually coated with rust-proof finishes allowing them to withstand corrosion and wear and tear over time.

5.     Fire Resistant – Metal roofs are non-combustible and provide the highest fire rating for roofing material.  This is especially beneficial if you live in an area prone to wildfires.

6.     Recyclable – metal roof panels are recyclable, with the ability to reduce landfill waste and promote sustainability.

7.     Low Maintenance – metal roofs help reduce the need for frequent repairs or replacements. 

CONS:

1.     Higher Initial Cost - metal roofing material and labor to install are usually a higher up-front cost than traditional asphalt shingles. 

2.     Noise - metal roofs can be noisy during rainstorms, hail, or when debris falls on them, which might be a concern for some homeowners.

3.     Denting – metal roofs are generally durable, but roofing panels made from aluminum or copper can be susceptible to denting when struck by hail or debris.

4.     Oil Canning – this aesthetic problem occurs when wrinkles or waves form on the panels as a result of incorrect installation or uneven substrates.

5.     Expansion & Contraction – metal expands and contracts with temperature fluctuations, which can lead to fasteners loosening and potential leaks developing. 

6.     Slippery When Wet – when metal roofing panels are wet from moisture or precipitation, they become slippery, which can be hazardous for walking.

7.     Maintenance – while generally a low maintenance roof, metal still requires periodic inspections and clearing to prevent rust and moss growth. 

8.     HOA Restrictions – certain HOAs prohibit the installation of metal roofs because of uniformity requirements.

9.     Roof Pitch Requirements – most metal roof panels need at least a 3:12 roof pitch to ensure adequate water runoff and prevent pooling or ice damming.

If you are considering your options between traditional asphalt shingles or metal, be sure that you weighed the pros and cons of each.