Primers and Single-Ply Roofing
The “no-primer-necessary” trend continues for most single ply roof jobs. However, like the metal roofs and spray foam roofs we’ve looked at in the past two weeks, there are only a couple of instances where a primer is recommended.
- On TPO, PVC, and Hypalon roofs, a primer may be necessary on roofs under 5 years old. These roofs can sometimes be oily, making it difficult for silicone to adhere. If you are working on a newer TPO roof, our primer P-151 will help the silicone adhere even better. This primer is designed to cut through these oils and create a nice surface for the silicone to stick to. See our technical data sheet online for details.
- Recently we’ve seen an uptick in silicone usage on campers and RVs. If you’re coating a camper or RV you could have similar issues as with TPO and Hypalon so P-151 is there for you again.
P-151 is a very versatile and strong primer. Last year we updated P-150 into P-151. We put a lot of time into developing this primer specifically for silicone to obtain maximum adhesion. As always, reach out to your Regional Manager for details on this primer and any single-ply roofing questions.
Next week, we will look at modified bitumen, aged asphalt, and gravel BUR roofs and their relationship with primers. Please follow along!