It’s the middle of a sweltering summer day, and you’re on your roof, patching up some shingles that have come loose in the wind. You’ve got your trusty roofing glue in hand, ready to get the job done.
But as you start to work, you can’t shake the nagging thought in the back of your mind: Is this glue actually safe?
You’re not the only one who has wondered about this.
In this article, we’ll take a deep dive into the world of roofing glue safety.
Is roofing glue toxic?
Roofing glue can be toxic due to the presence of harmful chemicals such as volatile organic compounds (VOCs) like toluene and isocyanates and other solvents.
The toxicity of roofing glue depends on the specific product and its ingredients, and it is important to read product labels and safety information before using it.
When using roofing glue, it’s best to wear protective gear like gloves and a mask to cut down on health risks.
What is roofing glue?
Roofing glue, also known as roofing adhesive or roofing sealant, is a type of adhesive used in construction to secure roofing materials to the structure of a building.
Usually, it is used to seal and hold shingles, tiles, or other roofing materials in place. This keeps the roof from leaking and helps keep it together.
Roofers use roofing glue because it provides a strong and durable bond that can withstand the elements and the movements of the building.
It can also stand up to changes in temperature and UV light, so the roofing materials will stay in place for a long time.
Roofing glue is an important part of roofing systems because it helps the roof last and work well for a long time.
The potential health hazards associated with roofing glue
Respiratory irritation
Some roofing glues contain chemicals that can cause irritation to the eyes, nose, and throat when inhaled. This can lead to symptoms such as coughing, wheezing, and shortness of breath.
Skin irritation
Roofing glue can cause skin irritation, redness, and itching if it comes into contact with the skin. When exposed for a long time, the skin can have more serious reactions, like dermatitis or chemical burns.
Nausea and headaches
Some roofing glues have solvents that can make you sick or give you a headache if you breathe in too much of them. This can be particularly hazardous for individuals with pre-existing respiratory conditions.
Carcinogenic effects
Some roofing adhesives have chemicals in them that are known to be carcinogenic, which means they could cause cancer. Examples of these chemicals include toluene and benzene.
Allergic reactions
Isocyanates are found in some roofing adhesives. Isocyanates are a common cause of asthma at work and can also cause anaphylaxis in some people.
Neurological effects
Some roofing glues have solvents that can affect the nervous system and cause symptoms like feeling dizzy, getting confused, and losing your memory.
Liver and kidney damage
Exposure to high levels of certain chemicals in roofing glue can cause damage to the liver and kidneys. This can lead to long-term health problems, such as chronic kidney disease or liver failure.
Eye irritation
Roofing glue can cause eye irritation, redness, and tearing if it comes into contact with the eyes. This can be especially dangerous for people who already have eye problems, like cataracts or glaucoma.
Immune system suppression
Some chemicals in roofing glue can weaken the immune system and make people more likely to get sick from infections and other diseases.
Special precautions when using roofing glue
- Use personal protective equipment (PPE): When handling roofing glue, it is important to use protective equipment such as gloves, masks, and goggles to minimize skin and respiratory exposure.
- Read the product label: Before using roofing glue, it is important to read the product label to ensure that you understand the proper use and safety precautions.
- Ensure adequate ventilation: Roofing glue fumes can be hazardous, so it is important to ensure adequate ventilation when using the product. This may include using fans, open windows, or a ventilation system.
- Store the product properly: Roofing glue should be stored in a cool, dry place, away from heat and ignition sources. It should also be kept out of reach of children and pets.
- Dispose of the product properly: When disposing of roofing glue, it is important to follow local regulations and guidelines. In many cases, roofing glue should be disposed of as hazardous waste.
- Work in a well-ventilated area: Make sure there is proper ventilation in the workspace, such as opening windows or using a fan to circulate air.
- Avoid breathing in fumes: Avoid getting close to the source of the fumes or standing directly over it. If possible, work outdoors or in a separate, well-ventilated area.
- Minimize skin contact: Avoid skin contact with roofing glue as much as possible. If contact does occur, wash the affected area thoroughly with soap and water.
- Store roofing glue properly: Store roofing glue in a cool, dry place and make sure it is tightly sealed when not in use to prevent fumes from escaping.
- Seek medical attention if you feel sick: If you experience symptoms such as headache, dizziness, nausea, or irritation of the eyes, nose, throat, or skin after exposure to roofing glue, seek medical attention immediately.
Ingredients sometimes found in most roofing glue
- Asphalt: Asphalt is a sticky, black, and highly viscous liquid or semi-solid form of petroleum. It is used in roofing glue as a binding agent to provide adhesion and water resistance.
- Polycyclic aromatic hydrocarbons (PAH): These are a group of over 100 different chemicals that are formed as a result of burning organic materials, such as coal, oil, and wood. They are commonly found in products like roofing tar and asphalt and have been linked to a range of health problems, including cancer, developmental and reproductive issues, and respiratory problems.
- Bitumen: Bitumen is a heavy, thick, and dense liquid form of petroleum. It is used in roofing glue to provide waterproofing and adhesion.
- Toluene: Toluene is a colorless, flammable liquid that is used as a solvent in roofing glue. It can cause respiratory irritation, headaches, and dizziness if inhaled.
- Isocyanates: Isocyanates are a group of chemicals used as reactive components in roofing glue to improve the curing process. They can cause respiratory problems, skin irritation, and other health problems if not handled properly.
- Coal tar: Coal tar is a by-product of the production of coal. It is used in roofing glue as a waterproofing and sealing agent. It has been linked to skin irritation, respiratory problems, and other health problems.
- Pesticides: Pesticides are chemicals used to control pests and insects. Some roofing glues may contain pesticides to protect against mold and other pests. These chemicals can be harmful if inhaled or come into contact with the skin.
- Fillers: Fillers are added to roofing glue to improve its physical properties, such as flexibility and durability. They may include substances like clay, sand, and other minerals.
- Petrochemicals: Petrochemicals, such as petroleum asphalt, are derived from crude oil and are used in roofing glue as a binding agent to provide adhesion and waterproofing.
- Rubber: Rubber is a material that is used as a binder in roofing glue to improve flexibility and durability.
- Quarts: Quartz is a mineral that is used as a filler in roofing glue to improve its physical properties.
- 1,2,4 Trimethylbenzene: 1,2,4 Trimethylbenzene is a colorless liquid that is used as a solvent in roofing glue. It is toxic if inhaled and can cause respiratory problems and other health issues.
- Stoddard solvent: Stoddard solvent is a petroleum-based solvent used in roofing glue as a cleaner and degreaser. It can be harmful if inhaled or comes into contact with the skin.
- Bentonite: Bentonite is a type of clay that is used as a filler in roofing glue to improve its physical properties.
- Rosin: Rosin is a resin derived from trees that are used as a binding agent in roofing glue.
- Naphthenic distillate solvent extract: Naphthenic distillate solvent extract is a petroleum-based solvent used in roofing glue as a cleaner and degreaser.
- Attapulgite: Attapulgite is a type of clay that is used as a filler in roofing glue to improve its physical properties.
- Calcium carbonate (Limestone): Calcium carbonate, also known as limestone, is a mineral that is used as a filler in roofing glue to improve its physical properties.
- Xylene (mixed isomers): Xylene is a colorless liquid that is used as a solvent in roofing glue. It can be harmful if inhaled or comes into contact with the skin.
- Neoprene: Neoprene is a type of synthetic rubber that is used in roofing glue as a binder to provide flexibility and durability. It is resistant to oil, weather, and chemicals.
What type of roofing shingles require the use of roofing glue?
Roofing shingles that require the use of roofing glue are typically asphalt shingles, which are the most commonly used type of roofing shingle in the United States.
Roofing glue is used to keep the shingles in place on the roof deck and to protect the roof from damage from wind and water.
The adhesive helps to prevent the shingles from lifting or blowing off during storms and high winds and also helps to keep water from seeping under the shingles and causing damage to the roof deck and structure.
It’s especially important to use roofing glue in places where high winds, heavy rain, and other bad weather happen often.
Types of roofing felt that don’t require roofing glue or adhesives include synthetic underlayment, rubberized asphalt underlayment, self-adhering underlayment, and ice and water shield.
These types of felt can be put up without glue because they are light and flexible, have layers that stick to themselves, or are held in place with mechanical fasteners.
Are there any alternatives to using roofing glue on a roofing project?
Self-adhesive underlayment
Self-adhesive underlayment is a type of roofing felt that has a sticky backing. It can be rolled out on the roof deck and pressed into place, so you don’t need to use any extra glue.
Mechanical fasteners
Instead of using adhesives, roofing felt can be secured to the roof deck using mechanical fasteners, such as roofing nails or screws.
Synthetic underlayment
Synthetic underlayment is a type of roofing felt that is made from a lightweight, durable material. Some synthetic underlayment is self-adhesive.
They can be used as an alternative to traditional roofing felt, as they provide a similar level of protection without the need for adhesives. It’s also becoming a popular selection among roofers and newer homes.
Rubberized asphalt underlayment
Rubberized asphalt underlayment is another alternative to traditional roofing felt. It is made from a mixture of asphalt and rubber, which provides a high level of waterproofing protection.
Again, some rubberized and EPDM felts are built with self-adhesive.
Ice and water shield
Ice and water shield is a membrane that sticks to itself and is put at the edges of a roof to keep water from getting in if the roof leaks. It can be used in place of roofing felt as an alternative to traditional roofing felt.
What does roofing glue smell like?
Roofing glue usually smells like a mix of gasoline, paint thinner, and tar, which is a strong, strong smell.
The smell of roofing glue can be different depending on what chemicals and materials are used to make it.
Some people find the smell of roofing glue to be unpleasant and overwhelming, while others may barely notice it.
When roofing glue is used in a small, closed space, like an attic or crawl space, the fumes can be especially strong and dangerous.
How to deal with the leftover roofing glue?
- Check local regulations: Before disposing of leftover roofing glue, check with your local waste management facility to see what regulations apply in your area. Some regions may have specific disposal requirements for hazardous waste materials, such as roofing glue.
- Store safely: Store leftover roofing glue in a sealed container, away from heat and flame. Make sure to label the container clearly as hazardous waste. Keep it in temperatures between 60 and 80 degrees Fahrenheit. These things can last up to 3 years if stored properly.
- Proper disposal: If your local regulations allow, you may be able to dispose of leftover roofing glue as part of your regular household trash. If not, contact a hazardous waste disposal facility to arrange for proper disposal.
- Recycling: If possible, consider recycling leftover roofing glue. Some roofing contractors and manufacturers may accept leftover roofing glue for recycling into new roofing products.
- Let it fully cure: Once roofing glue has been applied and has fully cured, it can be safely disposed of in the regular trash. Curing time can vary depending on the specific product and the conditions of the installation, but it is typically 12 to 24 hours.
Is roofing cement the same as roofing glue?
Roofing cement and roofing glue are similar but not identical products. Roofing cement is a thick glue made from asphalt that is used to seal seams and joints in roofing materials like shingles or metal panels.
Most of the time, roofing cement is used to fix leaks or put flashing on a roof. It is a waterproof and durable material that can withstand exposure to the elements.
On the other hand, roofing glue is a more specialized product that is used to attach roofing materials like asphalt shingles to a roof’s decking.
Roofing glue is made to stick to both the roof and the decking. This makes a strong, secure bond that can withstand wind, rain, and other weather conditions.
Even though roofing cement and roofing glue can be used in similar ways, they are not interchangeable and are used for different things on roofs.
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