Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


Forums › Home Workshop DIY › Filling in a 20mm hole that's too big for sealant

neb

neb

11294 posts

Uber Geek
+1 received by user: 10018

Trusted
Lifetime subscriber

#230588 3-Mar-2018 10:38
Send private message

I've got a 20-22mm hole under the eaves of the house with a 12mm alu bar (that containg wiring) coming out of it:

 

 

 

 

and I'm looking at ways of sealing it up. Standard acrylic sealant won't do it because of the size of the gap, so I'm thinking of...

 

 

1. Gorilla foam with sealant over the top.

 

 

2. Put a 16mm alu channel over the top of it, which will fill the 20mm hole to a level where I can use acrylic sealant.

 

 

3. Cut a 20mm dowel in half to form a plug, and seal up the remaining gap.

 

 

Any thoughts on that, or any other ideas? None are perfect, but I'm sorta leaning towards the gorilla foam at the moment, although it's horrible stuff to remove if I ever need to replace anything.

 

View this topic in a long page with up to 500 replies per page Create new topic

This is a filtered page: currently showing replies marked as answers. Click here to see full discussion.

nunz
1421 posts

Uber Geek
+1 received by user: 314
Inactive user


  #1967494 3-Mar-2018 12:27
Send private message

  • Make a template that is slightly wider than the hole out of cardboard, timber etc.
  • Drill a screw into the middle of the template
  • Cover the surface of the template with adhesive (ados, gorilla grip, builders nails.
  • Insert it into the hole - the screw lets you keep hold of it.
  • Pull it towards you and the adhesive will stick it against the inside of the hole.
  • LEt it dry and remove the screw.
  • Then bog / putty / plaster over the top of that.

 

 

Using a template will give you a much better base than just filling the hole with bog - it gives a foundation to put your filler onto.

 

A template could be two sticks of wood  - one above the conduit and one below then cross hatch a couple of other bits of wood on top. Chicken wire etc is good but a big hole presents problems if the filler has no base to sit on.

 

 

 

Gorrilla or sellys expanding foam is another option. Pump it in and let her expand to fill the whole. However the same issue applies - what does it hang onto. Once dry it can be sanded flat / into shape.

 

Good article on different filler types here. Pros and cons.  -> https://www.hunker.com/13401515/the-best-wood-filler-for-large-holes

 

 

 

The really correct artisan way:

 

  • Enlarge the hole - square it up.
  • Cut a piece of wood to fit the newly enlarged hole.
  • Put wings on two sides of the back of the wood plug
  • Put adhesive onto the fronts of the wings
  • Insert into hole and pull it forward to the wings connect firmly inside the hole. (a screw in the centre of the plug helps pull it forward)
  • Paint and putty over the minor cracks left.
  •  

 

 

View this topic in a long page with up to 500 replies per page Create new topic








Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Updates »

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.








RSS feeds
Main feed
Forums feed
Copyright
©2002-2026 Geekzone®
Site features
Geekzone BI dashboard
Geekzone Badges
Geekzone Status Page

 

Site Information
Subscribe to Geekzone
Privacy Statement
Forum Usage Guidelines (FUG)
Advertising
Trademark and copyright