4 Myths About Slate Roofing

January 19, 2016 1:00 pm

'Myths' spelled in slate lettering

There are some myths about roofing that have existed for years.  These have often been presented by roofers who are inexperienced with slate or are simply unscrupulous.  We’ve heard these myths so often, we wanted to clarify the truth about slate, and what is fictional.  Here are four myths about slate roofing that are important to know.

Slate Roofs Are Too Heavy For Most Buildings

Slate roofs weigh less than 3 layers of most asphalt roofing. Asphalt roofing will need to be installed more frequently than slate roofing; slate roofing can last centuries. After 3 layers of asphalt roofing have been tacked on to a roof, most roofers will tear down the layers down and start again. This leaves a lot of waste for landfills.  In contrast, slate can be recycled and also used as clean fill. It is not only a suitable roofing solution in terms of weight, but one that is environmentally friendly.

Slate Nails Can Only Be Copper

Slate nails can be made from material other than copper.  Appropriate slate nails can be made from hot dipped galvanised steel, cut steel, or square cut iron. Nails of a good quality are necessary in slate roofing, but there is more than one material in which to choose.

slate roofing tiles layered at an angle

Felt Paper Under The Slate Needs To Be Replaced

Felt paper (or underlayment) has no need to be replaced. It’s primary purpose is to prevent roof leaks during installation. Once a slate roof is installed, the function of underlayment has been fulfilled. A contractor who tells you otherwise is either unknowledgeable or attempting to take advantage of their client. Is it any wonder we recommend using an experienced slate professional?

Replace The Roof When Flashings Corrode

Any slate roof restoration professional knows that flashing can be replaced without replacing the roof. The simplicity of slate systems incorporates a design that was created to be taken apart and reassembled. This quality is what has enabled slate roofing to last for hundreds of years.

The fact is, you are meant to replace rooted sheathing boards, corroded flashings and cracked slates without replacing the entire roof. An expert will be able to examine the overall quality of the slate and let you know whether it is still functional. If the slate is in good condition, there is no need to replace the roof.

For more information on slate roofing systems, or any of our roofing solutions, contact Loftworld today.

 

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