Forums | Home Repair | Home Improvement | Painting | Interior Decorating | Remodeling | Landscaping


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Concrete, Stone & Masonry

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 11-30-2012, 04:35 PM   #1
Solutions (handyman)
 
Join Date: Apr 2009
Location: Central Alberta Canada
Posts: 326
Share |
Default

Concrete fasteners - problem


I am attachinh a metal threshold to a concrete foundation of a 50 year old building. I've drilled the holes (3/16) into the concrete but the the 1/4" x 2" concrete screws are not grabbing the insides of the hole. I think the cement is just too weak and is flaking as I try to screw. I could use anchors but that would mean undoing a lot of work to remove the threshold, the underlying wood, then drilling the concrete. Any suggestions? Is there something that I could fill the holes with that would cure and then allow me to screw into? Or any other ideas would be appreciated.
Thanks.
Mark Harvey is offline   Reply With Quote
Old 11-30-2012, 04:43 PM   #2
Member
 
Join Date: Nov 2011
Location: Hartfield VA
Posts: 24,477
Default

Concrete fasteners - problem


What kind of screws are you trying to use?
joecaption is offline   Reply With Quote
Old 11-30-2012, 04:57 PM   #3
Solutions (handyman)
 
Join Date: Apr 2009
Location: Central Alberta Canada
Posts: 326
Default

Concrete fasteners - problem


I don't have the brand name in front of me but they are blue and meant for concrete. Phillips head.
Mark Harvey is offline   Reply With Quote
Old 11-30-2012, 05:02 PM   #4
Member
 
Join Date: Oct 2009
Location: Minneapolis, MN
Posts: 471
Default

Concrete fasteners - problem


Check out Ramset. I will never use the blue concrete screws ever again.

B
Beepster is offline   Reply With Quote
The Following User Says Thank You to Beepster For This Useful Post:
Mark Harvey (11-30-2012)
Old 11-30-2012, 05:09 PM   #5
Professional Novice
 
Sadde10's Avatar
 
Join Date: Sep 2012
Location: Greensburg, IN
Posts: 9
Default

Concrete fasteners - problem


I have had great difficulty getting Tapcons to grab in a concrete floor. Went Ramset this last time for my treated 2X's and was impressed. 3" Ramset anchors and a #4(yellow) shot. Did Ramset for all of my furring strips as well, bees knees!
Sadde10 is offline   Reply With Quote
Old 12-01-2012, 06:08 AM   #6
Member
 
Join Date: Oct 2010
Posts: 173
Default

Concrete fasteners - problem


Try using 5/16 screws. If Tapcons don't come in that size, you can use stainless wood screws. Steel screws will rust. Although this is wood trick, rubbing the screw in bar soap helped me once. If you can, should remove the threshold and vacuum out the hole. Hand screw only.

You could try this. Protect the threshold hole with tape. Squeeze in epoxy, one that looks like 2 part syringe, coat the tapcon with same epoxy, set into the hole and weigh the screw down. Masonary epoxy may be more logical choice, but applicators wouldn't fit into the holes.
carpdad is offline   Reply With Quote
Old 12-01-2012, 07:36 AM   #7
Member
 
Join Date: Oct 2008
Location: Wisconsin
Posts: 228
Default

Concrete fasteners - problem


Since it's only a threshold and not something that is going to take a load, try putting a toothpick or two in the hole and then reinstall the screw. I'd try that first before I drill a larger hole and try the next size up screw.
__________________
Some advice you receive on the internet can be worth exactly what you paid for it - be careful.
stubborn1 is offline   Reply With Quote
The Following User Says Thank You to stubborn1 For This Useful Post:
Mark Harvey (12-01-2012)
Old 12-01-2012, 08:56 AM   #8
Mod
 
kwikfishron's Avatar
 
Join Date: Mar 2010
Location: Kansas (NCK)
Posts: 6,655
Default

Concrete fasteners - problem


A Ramset is a great tool but I defiantly wouldn't use it for a threshold.
__________________
A Picture Is Worth A Thousand Words
Especially In The DIY Chatroom
kwikfishron is offline   Reply With Quote
The Following User Says Thank You to kwikfishron For This Useful Post:
Mark Harvey (12-01-2012)
Old 12-01-2012, 10:53 AM   #9
Member
 
Join Date: Dec 2011
Location: B.C. Canada
Posts: 2,040
Default

Concrete fasteners - problem


Piece of wire in the hole hen the screw.
mae-ling is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Bamboo on modified concrete pad jhanson Flooring 0 10-08-2011 11:58 AM
Problem - Concrete Porch Slope johnjsa Building & Construction 1 05-21-2009 11:03 AM
Any problem with concrete poured over copper pipe? Mikej-22 Building & Construction 5 03-18-2008 07:43 AM
new concrete floor next to old concrete floor mattroos Building & Construction 10 08-28-2007 01:32 PM
Leveling concrete floor - problem McCool Flooring 3 12-05-2006 09:31 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.