screws or bolts for a teak handrail? - SailNet Community
 
LinkBack Thread Tools
post #1 of 10 Old 02-17-2012 Thread Starter
Senior Member
 
Join Date: Sep 2011
Location: Liberty Landing
Posts: 668
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 4
 
screws or bolts for a teak handrail?

I want to install a teak handrail on the forward part of the cabin of my hunter 25, so I have something to grab onto when I'm up there changing head sails. I recently installed a solar vent just behind the forward hatch, and the part of the deck I cut out was basically foam cored. This is a different part of the deck than where I will install the rails, but not that far from it so I think there is a very good chance it is all foam.

The hand rails around the companionway hatch do not appear to be through-bolted, and I read on some forum post that some hunters used screws for this purpose, but I can't see under the liner so I really don't know. There are no through-bolts going through the liner.

Well if I try and use screws, I fear they will have nothing to bite into but 1/4 inch of fiberglass and 2 inches of foam, not exactly an arrangement I would trust my life to. But if I through bolt it, besides having unsightly bolts over my v-berth, I fear I would be compressing the liner and the foam, and again, it may not be that strong for that reason. I suppose I could make a backing plate from 1/4 inch plywood or from aluminum, but that would really be ugly I am sure.

I have read about people epoxying oversized pieces of hardwood dowel into the deck where the screw holes should be, then screwing into that. I think that would hold, even in foam, but I don't know about the strength of screwing into the end grain.

I did a forum search and found little on point. Am I over thinking this? How is this usually done?
peterchech is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 10 Old 02-17-2012
Senior Member
 
celenoglu's Avatar
 
Join Date: Dec 2008
Posts: 672
Thanks: 0
Thanked 14 Times in 13 Posts
Rep Power: 7
 
Use screws the other way. Drill the cabin top, pass the screw from below, screw to the teak.
celenoglu is online now  
Quote Quick Reply Share with Facebook
post #3 of 10 Old 02-17-2012
Junior member, rest old
 
msmith10's Avatar
 
Join Date: Feb 2009
Location: Columbus Ohio
Posts: 497
Thanks: 3
Thanked 0 Times in 0 Posts
Rep Power: 7
 
If you're gonna drill thru the cabin top, use throughbolts. Only a little more work and infinitely more strength.

Mark Smith
1977 C&C 30 Mk 1 hailing from Port Clinton, Ohio
msmith10 is offline  
Quote Quick Reply Share with Facebook
post #4 of 10 Old 02-17-2012
72 C&C Corvette
 
CorvetteGuy's Avatar
 
Join Date: Jun 2011
Location: PHYC
Posts: 318
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 5
 
I recently replaced my exterior grab rails and they were screwed, however there is a mirror immage of the rails on the interior, the interior ones were drilled half way through and simply screwed thru the cabin top with 2 stainless screws per base, and into the exterior ones. So I would consider a small backing plate made of teak would give ample backing and would look nice as well.. gl
CorvetteGuy is offline  
Quote Quick Reply Share with Facebook
post #5 of 10 Old 02-17-2012
Junior member, rest old
 
msmith10's Avatar
 
Join Date: Feb 2009
Location: Columbus Ohio
Posts: 497
Thanks: 3
Thanked 0 Times in 0 Posts
Rep Power: 7
 
I have similar handrails to yours, Corvette. When I removed them to refinish, recaulk, I simply drilled clear thru the holes joining mating inner and outer handrails, enlarged the first inch or so of the screwholes to accept bolt heads on one end and nuts on the other, and throughbolted the rails together. No more work but a lot stronger.

Mark Smith
1977 C&C 30 Mk 1 hailing from Port Clinton, Ohio
msmith10 is offline  
Quote Quick Reply Share with Facebook
post #6 of 10 Old 02-17-2012
Señor Member
 
PorFin's Avatar
 
Join Date: Sep 2007
Posts: 1,446
Thanks: 8
Thanked 20 Times in 20 Posts
Rep Power: 8
 
Peter,

Through bolting is the safest way to do your job.

Here's a link to one of MaineSail's excellent tutorials on how to do this properly on a cored deck.

Sealing Deck Penetrations to Prevent Core Rot Photo Gallery by Compass Marine at pbase.com

Best,
PF
PorFin is offline  
Quote Quick Reply Share with Facebook
post #7 of 10 Old 02-17-2012
Senior Moment Member
 
SloopJonB's Avatar
 
Join Date: Jun 2011
Location: West Vancouver B.C.
Posts: 11,610
Thanks: 60
Thanked 72 Times in 69 Posts
Rep Power: 5
 
I didn't want to have plugs on the topside of my handrails so I mounted them from underneath with screws. I used #14 Pan head self tappers that reached almost all the way through the rail standoffs. I carefully drilled the holes in the handrails so they were the diameter of the minor axis of the screws shaft. I used fender washers with them to act as "backing plates".

#14 S/M screws are approaching lag bolts in terms of the aggressiveness of the threads so drilling the holes to the correct size gives you a VERY good bite into dense wood like teak.

It worked great for me - never a wiggle or a drop of leakage in nine years.

I, myself, personally intend to continue being outspoken and opinionated, intolerant of all fanatics, fools and ignoramuses, deeply suspicious of all those who have "found the answer" and on my bad days, downright rude.
SloopJonB is offline  
Quote Quick Reply Share with Facebook
post #8 of 10 Old 02-18-2012
ASA and PSIA Instructor
 
Join Date: Apr 2000
Posts: 3,588
Thanks: 7
Thanked 25 Times in 25 Posts
Rep Power: 16
 
If you use screws you run the risk 9f the handrail pulling off when you need it the most - at that time you grab hold of it ans you are heading over the side.

For the OP be sure that you are not installing the handrails in an area where you walk heading to the bow and back. Having a handrail to trip over int he dark would be a bigger problem than hanging onto the lifelines as you go forward.

Certified...in several regards...
sailingfool is offline  
Quote Quick Reply Share with Facebook
post #9 of 10 Old 02-20-2012 Thread Starter
Senior Member
 
Join Date: Sep 2011
Location: Liberty Landing
Posts: 668
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 4
 
I wound up screwing up into the handrails with stainless lug nuts, bedded in butyl. Seems pretty sturdy. Before:




After:


you guys like the new smoked acrylic ports?
peterchech is offline  
Quote Quick Reply Share with Facebook
post #10 of 10 Old 02-21-2012
TQA
Bombay Explorer 44
 
TQA's Avatar
 
Join Date: Apr 2009
Posts: 2,937
Thanks: 0
Thanked 79 Times in 75 Posts
Rep Power: 7
 
I would through bolt.

It is a MAJOR safety item.
TQA is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Butyl Tape for Bolts, ???? for screws? Beersmith Gear & Maintenance 12 10-04-2011 05:25 PM
Hull deck joint screws or bolts? labestia Gear & Maintenance 8 06-20-2010 06:23 PM
Strength of tapped bolts versus piloted sheet metal screws GBurton Gear & Maintenance 10 02-01-2009 10:11 AM
Teak Handrail Repair gestpa Gear & Maintenance 11 08-13-2007 04:12 PM
Help please with broken screw/handrail FrankLanger Gear & Maintenance 3 04-09-2006 10:55 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome