Gordon JamesThere are not many roofing materials that can compete with the durability, strength, formability, flexibility, resistance and economy of zinc.
Not even aluminum or copper! Zinc roofs are known to last for hundreds of years, even under the most extreme conditions.
How much does a zinc roof cost?
Unmatched strength, durability and classic beauty is what zinc roofing offers the homeowner. – With an installation price of $12.50 to $18.50 per square meter, this is a value unmatched by any other roofing material.
Zinc is the most amazing building material you’ve ever heard of!
In the United States, the idea of using zinc as a roofing material or as an erection material for a house seems quite different.
Aluminium and steel dominate the residential metal roofing market, while asphalt shingles are by far the most popular roofing material.
If you also consider natural slate, clay shingles and cedar roofs, zinc is hardly noticeable for most people. Although this trend is slowly changing.
Did you know that? 70% of the residential roofs in Europe are covered with zinc. In Paris it’s 85%.
via Metal Tech USA
Metal roofs are often chosen for their strength and durability. All top-of-the-line metal roofs that are well designed and installed are likely to last at least 50 years.
For this purpose, the steel must be provided with a metal coating such as G-90 galvanised steel and Galvalume (zinc and aluminium coating) and a high-quality colour coating such as Kynar 500. This is not the case with zinc, as is the case with copper.
Both zinc and copper form a protective patina, which means that they do not rust and are not affected by atmospheric precipitation.
Both metals benefit from the aging or skating process.
With zinc it starts dark as in dark grey/nearly black and then changes into a light grey or bluish patina. Zinc can also be tinted in almost any color, which serves as a sacrificial layer prior to skating.
Did you know that? Thanks to its natural self-healing properties, zinc can provide years of virtually maintenance-free protection for the roof and the building envelope.
Standing zinc seam roof with level shift at home
by CraftCorp
What really fascinates zinc is its resilience. All metal roofs, including zinc, can be scratched. In the case of steel, scratches in the coating expose the base material to oxidation and corrosion.
With zinc, it even heals itself. You read it right, zinc, if it’s scratched, it corrects itself.
The protective (patinated) zinc layer is technically hydroxyl carbonate, which reforms over time to remove stains or scratches. This is one of the few reasons why the zinc market often sells pre-patinated zinc roofs.
As you may have guessed, zinc is extremely durable. When steel is galvanised, it is actually just a layer of zinc applied to the base of the steel to protect it from oxidation, because steel is naturally corrosive or rusts when exposed for a long period to salt, water or a humid environment. Galvalume and galvanized steel will not age for several decades.
Like most metals, zinc is resistant to insects, fire, fungi and moulds. Zinc also has the advantage that it is non-toxic. Because of its low or no toxicity, soft zinc is marketed as an alternative coating for all roofs.
Previously, the traditional material was lead, then steel, but soft zinc offers virtually the same level of strength without the known effects of toxicity.
Did you know that? Zinc waste water is considered to be clean or free of contaminants to which most metals have no claim. That is why a zinc roof is an excellent option for owners interested in
Rainwater collection.
Like many other metals, zinc is fully recyclable. In addition, like most metals, it reflects solar radiation, preventing unwanted heat transfer from the roof covering to the attic to a certain extent.
On the contrary: Asphalt belts absorb a lot of heat during the day and conduct much of it to your home.
In addition, zinc has an even greater environmental value because it requires less fuel to produce it, i.e. for cooking and converting it into a finished roofing product.
Did you know that? Aluminium and steel consume two to four times more energy than zinc for their production.
With all the costs involved, one would think it would have to be at least as expensive as copper. No, no, no, no, no, no, no, no, no, no, no, no. Not necessarily.
Zinc ladders and standing seam costs
Roofs with zinc on standing seam
Use of Thin Metal Roof Technology
Zinc is very versatile. Zinc chips and standing seam are equally viable options for residential roofs. Zinc shingles cost about $5.50 to $8.50 per square foot of material, while zinc standing seam panels cost between $6.50 and $10 per square foot of material.
Zinc tile colour
over the roof of the Perma lock.
Then some in light fittings, cheap materials and the like. Add about $5.50 to $8.50 per square meter for installation, depending on the complexity of your roof and your location, and we’ll come back within the price range mentioned above.
The reason for this wide price range is the availability of materials and professional installers in your area. Also note that the traditional installation takes two to three times longer than traditional asphalt shingles, which can be installed by untrained workers.
Truly experienced and competent installers in the installation of zinc products for residential roofs and walls. There are also factors such as the slope of the roof or its slope, as well as the number of complex roof lines.
Finally, whether or not you tear off and remove your existing roof can affect your operating result. All of the above factors affect the total cost of the facility.
At RoofingCalc.com we entered a roof of an average of 1600 square meters in the cost calculator and came up with the best quality (material quality), using a licensed and insured contractor, and a simple roof shape.
For our zip code, the total cost of installation was approximately $17,400 for the low end and $24,300 for the high end. Pay attention: The above figure does not include the costs of demolition or removal and disposal.
When we added another zip code, the cost increased by $1,000 for both the top and bottom (note: we chose NY City because we thought it would be one of the most expensive zip codes).
In terms of return on investment, metal roofs generally offer a return of 86% if you decide to sell your home at any time. This is one of the best yields for all types of roofs.
There are no exact data for zinc, but given the values we have quoted, it would be surprising if they did not exceed 86%, especially as metal roofing in the eastern US generally achieves a return on investment of 95%.
Cost of zinc roofs versus other metal roofs
Copper, when installed as roofing, costs on average more than $20 per square meter. It is by far the most expensive metal material sold on the housing market.
Steel can be installed for as little as $7.50 to $14.50 per square meter, depending on the system.
The cost of installed aluminum can vary between $8.50 and $15.50 per square meter.
Zinc costs between $12.50 and $18.50 per square meter installed.
Benefits of zinc
- Extremely cost-effective
- Durable – lasts 100 years and more
- Nice before and after the patina process
- Self-healing – scratches disappear.
- power efficiency
- Respect for the environment
- Resistance to fire, insects, mould and mildew
- And not aggressive.
Zinc deficiency
- Incorrect installation, e.g. B. the use of a non-permeable plastic substrate, can lead to the formation of a non-permeable layer underneath the zinc, causing mould growth.
- The degree of patina (change) can vary depending on the climate in which it is installed.
- It is therefore very important to find a quality contractor and to ensure that breathable plastic decks are installed under the zinc roof so that the decks can breathe. Please note, however, that it is possible to purchase a pre-patinated zinc roof.
Have you thought about putting a zinc roof on your house?
Partner
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Gordon James
