What rubber cement do you recommend?

[Mach1Mark]

A while ago, I discovered the air diverter sheets that are attached to both sides of the radiator on my 2013 F250 were sagging and tearing. The OE material is some sort of mixture of rubber and dryer lint. I decided to make my own replacement set from rubber sheet. I found a set of el cheapo floor mats at the parts store and I used the one from the pass. side as a template and made a new part. Its installed and looks like it will work (pro tip: remove the grill instead of trying to shove your hand into the openings, much easier installation). Moving on the the driver side I found the diverter sheet was bigger than the other front floor mat and I need to glue the rear floor mat to the front floor mat to be able to use the OE piece as a template.
Finally, my question: what brand of rubber cement have you used that will basically 'melt' these two floor mats together so I can trim and install the new diverter without worry that it will separate? I considered using brads or small nuts/washers/bolts to ensure the two floor mats stay glued together. Ideas? Comments?

 

[Horseplay]

I have never found anything I was happy with, to be honest, for such a chore. "Rubber" materials are never just that and depending on what they are actually made of can make seemingly appropriate adhesives useless. I've had things hold fast initially only to have it fail after a period of time (minutes/hours/days) as release agents, etc. in the material reduce the effectiveness of the glue. My suggestion is to find something that actually melts the material so that it can then flow into itself and re-solidify. Even then, I've had the same type of failures.

Clean the surfaces REALLY well with a good degreaser or even acetone and then try your luck. Wish I had a better answer. If you find something that works, please share.

 

[Mach1Mark]

Thanks, Terry.
ive considered a non-hardening adhesive like Liquid Nails or 3M weatherstrip glue and cutting ‘fingers’ along the edges to be glued. This will allow the joint to flex a little and should a section become unglued it wouldn’t put stress on the other fingers. I’m also going to connect the fingers with a brad or a rivet with washers.

 

[guruatbol]

The floor mats are probably a plastic material. Maybe try the black pipe glue normally used to joint the black sewer pipe. It works by melting the plastic and the drying causing a weld type bond.

Mel

Sent from my Pixel 2 using Tapatalk

 

[Mach1Mark]

The floor mats are probably a plastic material. Maybe try the black pipe glue normally used to joint the black sewer pipe. It works by melting the plastic and the drying causing a weld type bond.

Mel

Sent from my Pixel 2 using Tapatalk

Excellent suggestion, Mel. The mats dont smell like rubber and are probably plastic.

 

[B67FSTB]

I would try/use windshield sealant but would first use their primer to coat both sides.

 

[KBMWRS]

Just stick (hehe) with the bolt,washers & nut routine....many times over. Use small versions or try washer and rivets. Final outcome would still be a secure air dam.