Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

maintenance pvc roof

maintenance pvc roof

maintenance pvc roof

Hello, I am helping a company taht has a roof protected with a membrane that feels like pvc, be it or not, after 10 years it has become stiff and at some places is breaking ans the joints are going separated. Does any one have any recomendations on how to repair it?, I believe there are some products to return the membrane it`s flexibility and make it last longer. I read somewhere that UV rays make oils from some polymers go away???
Thanks in advance

RE: maintenance pvc roof

PVC, both rigid & plasticized, gets destroyed by sunlight (UV).  Gets brittle and cracks at very low stress (after a few years).  Exposed PVC pipe (rigid) is commonly painted for protection.  Much harder for paint to adhere to flexible vinyl, but can do after a solvent wipe.

As to repairs:  I think the PVC polymer structure is damaged, so not much point adding plasticizer.  Either replace the whole, or patch overlays as needed.  The PVC cement sold for rigid PVC will not work for flexible vinyl, but I've bonded flexible vinyl using a special cement (tetrahydrofuran? containing dissolved PVC) from Flexi-Liner:

RE: maintenance pvc roof

Thank you so much for your help, I believe we will recomend changing all the material, after 10 years it has reached it`s life expentancy.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close