Frequently Asked Questions

The products are formulated with ingredients that last 50+ years. They stand up to hot and cold environments and are UV stable. These products are backed by the 100% warranty so you never have to worry again.

Yes! We will cover shipping costs for all orders over $49.95USD and $74.95CAD

Ziollo RV Roof Sealant is typically applied in 1 heavy coat. A second coat can be applied if necessary to achieve proper thickness.

 The first step of using Ziollo RV Roof Sealant is to determine your roof’s material. Here is some info to help you determine RV roof type:

1. EPDM - Smooth & rubbery. White top and black bottom. Most common RV Roof material.
2. TPO - Textured & plasticky. Same color top and bottom usually. Also quite popular.
3. Metal/Aluminum - Looks like a metal roof. Grey/silver, smooth and might be shiny or painted.
4. Fiberglass - Smooth hard gel like surface.
5. PVC/Vinyl - Smooth & plasticky. Same color top and bottom.

It may also state your roof type in your owners manual.
You can also call the manufacturer with the year/make/model and they can tell you what they made the roof out of.

Primer is critical for TPO roof Applications. Use Ziollo TPO RV Roof Primer for TPO roofs and follow our application guideline. Primer is not needed for other common RV Roof Types.

Yes. Seam Tape is the best choice for RV Roofs as it has its own waterproof membrane and is easy to install (just peel and stick). These products are used to reinforce against thermal and other movement to prevent cracking in the area's most likely to experience leaking.
Ziollo RV Roof Lap Sealant is used mainly for maintenance of previously sealed vents and joints by applying over the old Lap Sealant.  It can be used in conjunction with the Seam Tape prior to Priming and Coating. Refer to application guidelines for more information.

When applying Seam Tape as part of a system use our Paintable Seam Tape.

As a cheaper, quick, stand alone solution use our Repair Seam Tape.

To determine how much Ziollo RV Roof Sealant you need, divide your total square footage by the coverage rate provided. Example: You have a 240 sq ft roof and the RV Roof Coating coverage rate is 1 gallon per 60 sq ft. so 240/60 = 4 gallons of the RV Roof Sealant.
Coverage rates are expressed in final coverage and will include all coats needed to achieve membrane thickness.  Or use our RV Roof Kit Builder to calculate everything you need by entering the length of your RV.

Most of our coatings and primers are applied using a brush (for corners, edges, etc.) or 10mm (3/8") nap roller for large flat surfaces.
For the RV Roof Lap Sealant, you will need a caulking gun.

Technically you can spray it but you would need a heavy industrial sprayer capable of spraying a silicone coating. Most campers will not have access to this equipment. 

You can apply over most acrylic/latex, polyurethane, alkyd paint, epoxy paints/coatings with proper cleaning/preparation techniques. Keep in mind that when you apply over an existing coating or paint, if that coating/paint peels, our coating will peel with it as it is bonded to the existing coating/paint and not directly to the substrate. 

It is recommended to remove oil based or recently applied coatings with high solvent content prior to applying your Ziollo products. (oil interferes with bond/adhesion and solvents can deteriorate our sealant). If there is an existing Silicone Roof Coating on your RV you should be able to bond to it with Ziollo RV Roof Sealant but not with our Lap Sealant or Seam Tape

Our technical support team is here to help you, just reach out to us to talk with one of our technical support experts. Support@Ziollo.com or call 1-289-