The Process for Applying Spray Foam on Flat Roofing
The application breaks down into six key steps:
| Step | What to do |
|---|---|
| 1. Collect equipment & materials | Gather your spray foam rig, hoses, spray gun, appropriate PPE, and any other equipment you need. |
| 2. Prepare the surface | Clean the surface by removing dirt, debris, and loose materials, and fix any damage or leaks. |
| 3. Consider the weather | Confirm the weather is suitable. Check your material SDS for proper spraying temperatures, since ambient temperature and weather affect foam quality. |
| 4. Choose the best foam | Select the foam best suited to the roof and climate. Closed-cell foam is typically used for flat roofs for its water-resistant properties, and roofing-specific foam is available. |
| 5. Apply the spray foam | Create your mixture according to the manufacturer instructions in your SDS, then apply the spray foam. |
| 6. Inspect for quality control | Inspect the application for irregularities or gaps and fix them accordingly, then seal with a coating spray. |
Our Favorite Tips for Applying Spray Foam on Flat Roofing
If you’re looking for the most seamless application experience, keep these favorite tips in mind — assuming your roof is “ready-to-spray”:
- Test the roof to find out what thicknesses you need, using a transit measuring tool (survey).
- Pick out a section of roof that you can complete in a timely manner, so you can get the coating started early enough to cure that day. This will prevent leaving foam roofing exposed.
- Use consistent and even arm motions to promote uniform coverage or use robotic equipment like the Spraybot.
FAQs on Flat Roofing Spray Foam Application
How is applying spray foam on flat roofing different from other applications?
The sloped angle of a regular roof provides a means of water runoff. On a flat roof, proper drainage is still essential to prevent water pooling, but achieving it might require some creativity. With this in mind, consider applying the spray foam in a way that creates appropriate slopes that direct water toward drains.
Additionally, flat roofs are more exposed to direct sunlight, which can degrade the effectiveness of spray foam over time. To make the most of the flat roofing spray foam application, we suggest adding a protective coating that can shield the foam from UV rays to enhance its durability.
What type of spray foam is most suitable for flat roofs?
Closed-cell roofing spray foam is the best option for flat roofing spray foam because it has higher compressive density, water resistant, and structural strength. This allows it to act as both an insulation and vapor barrier.
How long does it take to complete a flat roofing spray foam application?
The duration of a spray foam application will depend on certain factors like roof size, weather conditions, and the specific time the spray foam is applied. If the surface needs heavy preparation or multiple layers, this will add time as well.
Diving into Spray Foam Application for Flat Roofing
If you are hesitant to start applying spray foam on flat roofing, SprayWorks Equipment is here to help! We host a variety of classes so that you can gain experience and understand techniques for the best spray foam application possible. Specifically, our commercial roofing training is a two-day, hands-on training course that allows individuals to gain experience working with the best equipment while practicing essential skills.
Whether you are a beginner or a pro, you can take this class, as it is designed to supply information for spray foam applicators of all skill levels. Additionally, it is flexible enough to be adjusted to fit the goals of your specific business.
Skills you can expect to learn include:
- Safety measures
- Code compliance
- Estimating
- Identification and preparation of substrates
- Installation methods for building a spray foam roof
- Marketing
- Operation of equipment
- Application of various coatings
Be sure to sign up for this course if you are looking for more information on applying spray foam to flat roofing. Our instructors have over 60 years of combined experience and look forward to teaching you via real-life examples during training!
Contact Us for More Information
For more information on how to master the application of spray foam on flat roofing, be sure to contact us today.
We look forward to seeing you in one of our classes!
