Synthetic slate roofing is an appealing alternative to its authentic counterparts, considering its affordability and aesthetic appeal.
As we know, roofing manufacturers are famous for reproducing more cost-effective versions of popular materials, and slate is no different.
Synthetic slate’s popularity is evident in the U.S. and Europe in cathedrals, libraries, estate homes, and more.
Like other roofing materials, synthetic slate presents problems, possibilities, and nuances that determine its fit for a particular project.
Below, Roofer’s Guild dives into synthetic slate roofing and whether it is the right choice for you.
Key Takeaway
Synthetic slate roofing presents vast benefits like durability and longevity, as the material can last up to 100 years.
Problems With Synthetic Slate Shingles
Synthetic slats may appear faded and discolored or begin to curl. They can also come damaged in the box, primarily when lines of the corners roll up. You can flatten these out in most cases, but it is definitely something to look out for.
Benefits of Synthetic Slate Shingles
The benefits of using synthetic slate shingles are numerous, and there is a good reason that they have become a popular alternative to authentic slate shingles.
Among the benefits:
Cost
While synthetic slate shingles are not technically slate – they are made from rubber and plastic, generally speaking—they are designed and constructed to mirror the unique, beautiful, authentic slate, but without the major cost or the installation process that can leave you with a stress headache.
Longevity
Synthetic slate shingles are designed to last longer. No more cracking, no more costly and difficult repairs. Just more durable, flexible, and reliable materials.
Green Building Alternative
Using synthetic slate shingles is considered a “green” building alternative, even those that use what is known as virgin materials. Just about any type of synthetic slate can end up being recycled.
Durability
Synthetic slate shingles tend to be much more durable than their authentic counterparts. The synthetic variations contain advanced ultraviolet inhibitors to reduce wear from constant sun exposure.
Safety
Synthetic slate generally has impact modifiers to help withstand storm damage, most of which are certified by Underwriters Laboratories as Class 4 impact resistance, the highest level for roofing materials.
Most synthetic slates also earn the highest fire-resistance ratings – Class A – which means that they are effective at fighting exposure to external fires, are not readily flammable, and do not spread fires.
Installation
Synthetic slate shingles are far easier to transport and install than most other roofing materials.
At 1.25 pounds per tile, they are far lighter than asphalt shingles and about a quarter of the weight of a standard authentic slate shingle.
Their lightweight means that even a standard roof structure is able to support these synthetic slate shingles without requiring any special reinforcement.
They are practical for mainstream construction in residential areas.
During the installation process, the synthetic slate shingles can be cut using a field utility knife and nailed into place with a pneumatic nail gun and standard roofing nails.
Comparison to Authentic Slate Shingles
Authentic slate shingles are expensive to purchase and install. In addition to the cost, authentic slate is very heavy, which impacts transportation and installation.
Authentic slate shingles are also fragile, especially during the cutting and nailing process. After installation, they become particularly susceptible to cracking.
Cost of Replacing Slate Shingles With Synthetic Slate Shingles
The average roof in the United States is about 1,600 square feet. Each square of synthetic slate shingle can run in the neighborhood of $350-400 per square.
That means that after installation costs, you are looking at $900-$1,100 per square.
Incredibly, that pales in comparison to the $1,650-$3,000 per square cost of authentic slate tiles.
When all is said and done, you’re looking at $14,400-17,600 for a synthetic slate shingle roof and around $26,000 for a natural slate roof of the same size.
Coupled with the durability, lightweight, and ease of installation, it is clear why so many are moving away from natural slate roofs.
Synthetic Slate Shingle Manufacturing Process
Synthetic slate shingles are made through the process of injection molding. Petroleum-based materials are injected into these metal forms that are cast from authentic slate.
Some brands of synthetic slate shingles use virgin plastic or rubber in the manufacturing process.
Others use recycled plastic or rubber, as well as cellulose fibers or mineral dust.
Once the molded materials harden, the synthetic slate shingle gains long-term durability.
The manufacturing process of synthetic slate shingles contributes to its lower cost and stronger durability.
Final Thoughts on Synthetic Slate Roofing
Making the switch to synthetic slate shingles makes for a sound long-term investment. They are meant to stand up to heavy weather conditions and enjoy an extended roofing lifespan.
Make sure you have a warranty that will cover your roof in the event of any damage. After you have gone through the installation process, you can sit back and enjoy your beautiful and durable synthetic slate roof for a long, long time.
