Although the roof was relatively new (installed in 2007), we suspected the asphalt roof shingles were the source of the lead. … Using an X-ray Fluorescence machine (XRF) they found that the roofing material contained a significant amount of lead and other toxic heavy metals.
Are asphalt shingles toxic?
No, modern day shingles are not toxic. However, if you roof was installed with shingles made before 1989 then it may contain asbestos which is classified as a carcinogen that must be handled as a hazardous material.
Is lead still used in roofing?
Lead is one of the oldest materials in the roofing industry and is still commonly used throughout the world today. In light of this, it is safe to say that lead has proven itself to be a reliable and durable material, excellent for roofing purposes.
What are asphalt shingles made of?
This product is made of a base mat or organic material (cellulose fibers) or inorganic material (glass fibers). The organic mat is saturated and coated with asphalt and then surfaced with ceramic-coated opaque mineral granules.
Is an asphalt roof safe?
Generally speaking, asphalt shingles roofs are considered safe for irrigation of any plants. … You may want to read this one that looked at roof types and compared the water quality to drinking water standards. In this study, asphalt shingle roofs were not worse overall than other roof types.
Are cedar shingles toxic?
When a cedar shake or shingle roof is ready for replacement, it doesn’t end up as toxic material in your local landfill. The wood is completely recyclable.
Why do roofers use lead?
One of the main reasons lead is used for roofing is that it is extremely durable against all forms of weather. This is due to the natural weatherproofing of the material and the efficiency of its thermal expansion and contraction.
What do roofers use instead of lead flashing?
Wakaflex is lead flexible, adhesive roof flashing that can be used instead of lead in most modern roofing applications. … EasyFlash is a lightweight flashing that can be used on almost any tile or slate roof to seal abutments. Again, it’s available in a range of colours.
Are there any alternatives to lead?
Getting the Lead Out
Many automobile retailers and distributors now carry alternatives to lead weights, including those made of zinc, plastic, or steel; lead-free tape weights; or those made of a zinc alloy called ZAMA (composed of zinc, aluminum, and copper).
Can you paint asphalt shingles?
Asphalt roof shingles can be painted using exterior acrylic paint. They don’t require much preparation before painting, and a coat of paint will improve your roof’s look. It’s more environmentally friendly to paint your roof instead of replacing it, and painting shingles allows you to customize your home.
What type of asphalt is used in shingles?
Asphalt used in shingles is considerably harder than asphalts used in pavement. Organic shingles contain 30 to 36 percent asphalt. Fiberglass shingles contain 19 to 22 percent asphalt.
Why are asphalt shingles used?
An asphalt shingle is a type of wall or roof shingle that uses asphalt for waterproofing. It is one of the most widely used roofing covers in North America because it has a relatively inexpensive up-front cost and is fairly simple to install.
Is it safe to collect rainwater from a shingle roof?
Asphalt / Bitumen / Composition Shingle
Got asphalt shingle (like most of us do)? Not a problem! Asphalt is inert, and generally safe for rainwater collection.
Is roofing material toxic?
Asphalt shingles are the most affordable and most common option for roofing. However, there’s a misconception that they are potentially toxic. … Though asphalt seems like a dangerous substance, it’s can only produce toxic fumes when heated.
Can you collect rainwater off asphalt shingles?
Asphalt Shingles – Many shingles work with rainwater harvesting. The problem is that some shingles can leach off certain contaminants into the water, causing the rainwater system to fail, even for irrigation only. But there are shingles that do not leach these contaminants.