Roof rack bolt holes?

So figured out why I was getting water on the passenger side floorboard. Previous owner apparently had some type of roof rack up there. Every time I would wash my truck at the car wash water would drip inside passenger side floorboard. I pulled the roof drip molding up and noticed the holes fully exposed. Not sealed after they took the rack off I’m assuming. question is what do I do to seal them up just put silicone over them? Get bolts that are short enough to go back in then silicone over top of them.
what have you all done? Recommendations please and thank you.

 

Yes

 

Flex seal guy said; flextape : )

 

I would use bolts with teflon tape and then seal over the bolt head. Should be good for life of truck.

 

What size bolt?

 

Teflon on the bolt threads is a very good idea, definatly water proofed then.

 

The ones that fit.

Sorry couldn't resist.

You should be able to get rubber washers aswell to keep the head of the bolt off the body and help seal it up then silicone over

 

Try M6-1.0 x ?long.

 

I have the Same Problem, AFTER RECENT PURCHASE. of Off-Road 2023 TRD 5K Miles for $29,999 . Discovered Rain Water coming in on the Passenger Side Front and Rear ! After Lookin at Videos, Factory used tape over the Holes ! Then Original User, must had Roof - Rack, took off, then To leave 5 Holes Totally Open, Under the so called Weather Strip Channel, where Water can be allowed to seap into the Cabin compartment, ! Looks Like people Suggesting METRIC Screws [ M6-1.00MM Pitch X 12 MM] Length which is about one half inch. .. Fleet Farm SKU 100267870 , 10 Pieces for $3.98 pickup at store. .. Appreciate the person saying to add teflon tape, plus apply Silicon over the head . Will Pick up this Morning. Happy Labor Day Weekend everyone. https://www.fleetfarm.com/detail/hi...gF5WwBa5s3QArWmuM2x02BXP5W-JMcQyxeL8qnoM-oMgT I went with Flat Screw Heads ... and Put some Teflon around Threads .. [ M6 - 1.00 Pitch x 12 MM Length From Menards .. for now also taped the Top of the screw .. https://www.menards.com/main/hardwa...crew-2-count/88633/p-1444440222359-c-8933.htm UPDATE Problem Solved .. NO More Leaks after the Flat Heads, Teflon around threads , and I just gorilla Taped over the Top of the screw. !

 

Butyl tape over the hole and screw