”Hard slate will last anywhere from 75 to 200 years, while soft slate will last only 50 to 125 years,” he said, adding that as a result, a homeowner trying to decide whether to repair, restore or replace a slate roof should first determine whether the existing slate is hard or soft.
How often should a slate roof be replaced?
A lifespan of 80-100 years is typical for slate roofing, although this can last longer if maintained well after installation.
How much does it cost to replace a slate roof?
The average cost to repair a slate roof is about $1,532, with a range between $708 and $2,444. Small repairs like replacing individual shingles may cost as little as $250, but restoring a major portion can cost up to $5,000. A new slate roof costs over $10,000 to install, so even major repairs are usually worthwhile.
Does a slate roof add value?
Increased Home Value
Because slate roofs are made of a premium material that is durable, long lasting, and beautiful, having a slate roof can increase your house’s value. This is especially helpful when selling your house, as it can help you command a higher price than a comparable house with an asphalt roof.
Should I repair or replace slate roof?
Slate roofs (like all roofs) should be inspected annually. Cracked, broken, loose or missing slates should be replaced as soon as possible by a roofer experienced in slate work. … With a service life ranging between 75 to 200 years, slate is the most durable of all roof coverings.
How do you know when a slate roof needs replacing?
Check loose slates for firmness. The best way is to hold a loose single slate at the edge and gently tap it in the centre with a hammer. It should produce a clear ringing sound if the slate is sound. If you hear a dull, dead, sound it’s likely that the slate has become porous and is past its usefulness.
Why do slate roofs fail prematurely?
Poor Quality Nails Were Used
Nails are required to install slate roofs to your home and believe it or not, it’s one of the common reasons why a slate roof fails prematurely. … As the nails deteriorate, there won’t be anything left holding them in place, causing the slate tiles to tumble from the roof.
How do you maintain a slate roof?
Regular maintenance should include cleaning gutters at least twice during the fall and once in early spring, and replacing damaged slates promptly. Every five to seven years inspections should be conducted by professionals experienced in working with slate and steep slopes.
Which is better slate or tile roof?
Slates or tiles – do you know the difference? … The most crucial difference is that natural roofing slate is exactly that – a natural product, whilst tiles – whether concrete or clay – are manufactured. Therefore for those looking for an authentic rustic look, slate tiles may well be the more appealing choice.
Should I keep my slate roof?
Slate roofs are designed to last 100 years or more, and when regularly inspected and properly maintained can easily reach this age. To reach this milestone, broken cracked or missing slates should be replaced promptly by an experienced slater to prevent more serious damage.
What is under a slate roof?
The most common use of mortar under slates is called torching. This consists of a thin line of mortar trowelled across the top edge of each coarse of slate. The purpose of this mortar is intended to stop the very small amount of wind-driven precipitation, common with slate roofs.
What is the best slate for roofing?
Welsh slate is considered by many as the best natural slate in the world. Welsh slate is available in either heather (purple) or blue-grey. Penrhyn slate has a beautiful soft blue/purple appearance and can be expected to last more than 100 years.
Can you walk on a slate roof?
Though slate roofs are durable, over time they tend to deteriorate. … You must not walk on a slate roof under this condition. If you see a broken slate on the roof, do not try to fix it yourself. If you try to repair the slate roof by your own hands, there are chances of massive damages to your roofing structure.
Can you clean a slate roof?
Regular roof cleaning is critical for your roof, as slate is easy to cleave and water absorbent. Buildup of moss and debris on slate roofs hold moisture in the slates that can split them during winter. When cleaning a slate roof, don’t use chemicals like ammonia or chlorine bleach.
How much does synthetic slate roof cost?
Synthetic slate roofs cost roughly about $9 to $12 per square foot, installed, depending on where you live. Real slate roof installations cost $22 to $43 per square foot.