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.




30 posts

Geek


Topic # 248138 11-Mar-2019 22:24
Send private message quote this post

Google leads to many approaches and marketing ploys so looking for answers from those with experience! I'm hoping the responses to this question can be a good reference for many people when repairing small defects to weatherboard (not large, I know to cut out etc). Just a few questions around the process:

 

1)Removing soft/rotten wood but how far to go - sand/chisel/cut what's too soft to keep, how far is too far and time to cut out and replace?

 

2)Soft/damaged wood hardeners to 'harden'/'stop rot' on any remaining wood - just a marketing ploy or good idea?

 

3)filler vs putty vs bog - linseed oil, acrylic (water?) vs polyester vs epoxy based? Marketing info states they all are wonderful for all jobs!

 

-something different for cracks vs holes vs larger gouges? 

 

-Something that doesn't dry/shrink and fall out and can be painted?

 

-flexible to move with the wood, yet can put a nail through it?

 

-for unseen areas where painting/appearance not the priority which gives the best performance?

 

4)Primer/treatment - is it necessary if raw wood already covered with filler etc? for other patches e.g. chemical treatment that absorbs in or just a first layer of primer paint (or even just undercoat?)

 

Your thoughts/experience on 1-4 would be greatly appreciated!

 

 


Create new topic
2715 posts

Uber Geek
+1 received by user: 440


  Reply # 2196168 11-Mar-2019 22:55
One person supports this post
Send private message quote this post

You probably could have kept this in your other thread. @neb was starting on wood rot using pva and a fungicide mix to stabilise the remnants of the rot. Maybe he has some results?

neb

834 posts

Ultimate Geek
+1 received by user: 180

Lifetime subscriber

  Reply # 2196180 11-Mar-2019 23:37
Send private message quote this post

Bung: You probably could have kept this in your other thread. @neb was starting on wood rot using pva and a fungicide mix to stabilise the remnants of the rot. Maybe he has some results?

 

 

I won't know for some years :-). In brief, dremel to get the bulk of the rot out, wood stabiliser (fungicide + diluted crosslinking PVA) in several coats, and then builders bog, with flexible acrylic sealant in seams likely to flex a bit in weather. You can't tell it's been patched afterwards.

 
 
 
 


231 posts

Master Geek
+1 received by user: 35


  Reply # 2196273 12-Mar-2019 08:13
Send private message quote this post

Find the next vertical or a few back just to be sure.

 

Use a skillsaw and cut it over the middle of the vertical. Cut the underlaping part of the board with a thin saw.

 

Remove all the nails with a crowbar - you can get really thin weatherboard specific ones with are awesome.

 

Use a hacksaw to cut the nails that are on the top weatherboard otherwise they will stop a new board sliding in. I cut them at the top and the bottom of the nail.

 

Paint the end of the new ones after cutting them and let it dry. I also paint any other exposed wood such as the ends of the remaining ones as well.

 

Put the new ones in, hold a level to make sure they are horizontal, you might not notice it when you hammer it down but you sure do when you step back.

 

Seal it with weatherboard filler - it allows moving of the boards that normal gap filler doesn't, then paint.

 

Just learned that from doing my own house. 

 

 

 

 




30 posts

Geek


  Reply # 2196286 12-Mar-2019 08:31
Send private message quote this post

Thanks all for the tips - starting to make more sense now :)

 

neb: I won't know for some years :-). In brief, dremel to get the bulk of the rot out, wood stabiliser (fungicide + diluted crosslinking PVA) in several coats, and then builders bog, with flexible acrylic sealant in seams likely to flex a bit in weather. You can't tell it's been patched afterwards.

 

Interesting to know a dremel is useful and the application of a treatment then effectively a sealer (presumably PVA mix forms a skin/seal) - for painted areas I presume a primer could be used in its place?

 

I envision builders bog is a general term, does anyone know the typical chemical makeup? It's best used for large repairs but what about the small/cracks etc?

 

Anyone had experience with polyester/epoxy/acrylic sealers or putty - just trying to get a feel for the differences!

 

 


neb

834 posts

Ultimate Geek
+1 received by user: 180

Lifetime subscriber

  Reply # 2196567 12-Mar-2019 15:04
Send private message quote this post

muncedog:

Interesting to know a dremel is useful and the application of a treatment then effectively a sealer (presumably PVA mix forms a skin/seal) - for painted areas I presume a primer could be used in its place?

 

 

I used it with what's effectively a router bit, so something a bit like this, you can get them from China via eBay/Aliexpress, with the narrow neck of the rotary tool it was easy to get into tight corners and shred out the rotten fibres. Probably Trademe as well... yeah, like these.

 

 

The PVA wasn't a sealer but a hardener, so the crosslinking PVA/fungicide mix penetrates any remaining rot and wood and turns it into a hard plasticky substance, You can get commercial wood hardener that's either cross-linking PVA or resin-based, but it's several times the price for the same thing.

 

 

muncedog:

I envision builders bog is a general term, does anyone know the typical chemical makeup? It's best used for large repairs but what about the small/cracks etc?

 

 

It's the same as automotive bog, better for large repairs but has the advantage over most one-component fillers that it doesn't shrink on curing, is easy to work with when it's part-cured, you can shave it like cheese, or file/sand it once it's fully cured. Downside is its not flexible, which is why I did the alu window frame seams with acrylic sealer, then bogged over it, with the acrylic acting as a flexible buffer.

 

 

Can you post a photo of what you're trying to deal with? That would help in terms of providing feedback.

neb

834 posts

Ultimate Geek
+1 received by user: 180

Lifetime subscriber

  Reply # 2196569 12-Mar-2019 15:07
Send private message quote this post

muncedog:

I envision builders bog is a general term, does anyone know the typical chemical makeup? It's best used for large repairs but what about the small/cracks etc?

 

 

Oh, if you're in Auckland I've got a small amount left that you have have to play with, see how it goes. Used nearly half a kilo of it to rebuild the window frames.

Create new topic


Donate via Givealittle


Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Amazon introduces new Kindle with adjustable front light
Posted 21-Mar-2019 20:14


A call from the companies providing internet access for the great majority of New Zealanders, to the companies with the greatest influence over social media content
Posted 19-Mar-2019 15:21


Two e-scooter companies selected for Wellington trial
Posted 15-Mar-2019 17:33


GeForce GTX 1660 available now
Posted 15-Mar-2019 08:47


Artificial Intelligence to double the rate of innovation in New Zealand by 2021
Posted 13-Mar-2019 14:47


LG demonstrates smart home concepts at LG InnoFest
Posted 13-Mar-2019 14:45


New Zealanders buying more expensive smartphones
Posted 11-Mar-2019 09:52


2degrees Offers Amazon Prime Video to Broadband Customers
Posted 8-Mar-2019 14:10


D-Link ANZ launches D-Fend AC2600 Wi-Fi Router Protected by McAfee
Posted 7-Mar-2019 11:09


Slingshot commissions celebrities to design new modems
Posted 5-Mar-2019 08:58


Symantec Annual Threat Report reveals more ambitious, destructive and stealthy attacks
Posted 28-Feb-2019 10:14


FUJIFILM launches high performing X-T30
Posted 28-Feb-2019 09:40


Netflix is killing content piracy says research
Posted 28-Feb-2019 09:33


Trend Micro finds shifting threats require kiwis to rethink security priorities
Posted 28-Feb-2019 09:27


Mainfreight uses Spark IoT Asset Tracking service
Posted 28-Feb-2019 09:25



Geekzone Live »

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


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



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.

Alternatively, you can receive a daily email with Geekzone updates.