Builder’s Bog

Is it not great to have the manufacturer “on site” with you?  Realising DIY “first time users” of our products may feel unfamiliar with our products, our technical information is available at your fingertips by going to the mobile version of our website on your phone or send us an email.

From time to time I get emails from people who want to know more about our products, product uses, mixing tips and if that is the case, what are the guidelines. I figured that it would be easier to write the guidelines in a post and just refer every one here.

So the answer to the first question is: Yes, I do accept all questions here and I do answer all of them. Currently I received question from our customer who is about to use Builders Bog on the beams in her ceiling.


Here is the question:



I am about to use Builders Bog on the beams in my ceiling.  The nail holes are worn, and the roof is coming loose!  I will “bog up” the beams, then replace the roofing screws.

My question is:  How long is the bog workable.  That is, will it harden to a point that it will be too hard to drill and, therefore, replace all the required screws. There are a lot to do, and while I can probably apply the bog fairly quickly, it is going to take some time to get to all the screws that need attention!

My second question is:  Should I wait until the bog is hard before replacing the screws?

Never done this before!  : -)

Thanks, Elizabeth


Every question is important to me. So I replied to Elizabeth the following day to help her to understand our product and use Builder’s Bog to achieve her objective. Here is my answer:


Hello Elizabeth.
An excellent question. When fully cured, Builders Bog sets about as hard as timber and can be nailed , drilled and screwed.  So I would fill all the nail holes, let everything cure for as long as you wish, then drill pilot holes for the roofing screws and drive the screws in.
I am not absolutely sure what you are about to do.  You say the nail holes for the “roof” have come loose, but mention the “ceiling” beams. Presumably the roof is iron and you will remove the sheets to access the nail holes and fill them.  This is not easy and it is also very difficult to get any type of putty consistency down into a nail hole.
Since roofing screws are thicker than lead head or other roofing nails , normally a screw will drive perfectly well into an old nail hole in which a nail has come loose, without any filling being necessary.
Have I got this wrong? “Ceiling beams” and “roof nails” confuses me a bit.  There should not be any
roof nails in the ceiling beams. Is it the inside ceiling that has come loose?  The same answer applies – just let all the Builder’s Bog harden and cure before screwing into it.
The roof nails  fix into the  perlins which run across the rafters.   Ceiling beams or joists tie the walls together and resist the out-thrust of the roof rafters, which are pitched above them to make a loft or roof space. An iron roof is not normally nailed directly into the rafters (“beams”), but to the crosswise perlins which stabilise the rafters and hold them square.
Attached is a drawing to clarify. They call the perlins “roof battens” in this illustration.

Stuart Jordan


I am  very pleased to find out  Elizabeth’s question  was answered to her needs and indeed she was very complimentary about our response.


Dear Stuart,

Thank you so much for your most comprehensive answer, and the wonderful diagram!  (I have been telling students all day “It’s all about the jargon, it’s all about speaking the same language.”  This is a perfect example!
You have answered my most important question:  How much time to I have before the Bog is “too hard” to work.  Now I know I have “as long as (I) wish”!)
To use the correct terminology:  The roofing screws that hold the tin down are so loose I can jiggle them up and down with my fingers!  I can lift whole sheets of tin in some areas!  Fortunately, we are extremely well protected from wind;  otherwise we would have lost that tin years ago!  (I suspect that the constant “up and down” movement of the tin, pulling on the already loose screws, has just stripped the holes of any thread.  I have tried replacing the roofing screws with a slightly larger gauge screw … but I cannot go any bigger without starting to use something akin to a bolt!  I have even tried longer roofing screws, but I still have a few screws loose upstairs!  ; – )  )
So it will be very easy for me to lift the tin to apply the bog to the BATTENS.  (Trying out my new vocabulary … )
I am handy with a drill, and nimble enough to run around our roof, so the rest will be easy once I have the bog in place. I will give you another big THANK YOU for this diagram.  I have a beam that needs replacing, which is either a “collar tie” or “purlin” …and now I will be able to understand what the builder is saying to me when I talk to him!

So thank you again for your support, it is most impressive.  And thank you for a great product.  I am looking forward to playing with it!

Warmest regards, Elizabeth


Although our product is easy to use and with it you can achieve great results, the fundamental chemistry is quite advanced and has been perfected over 25+ years by us. I am very happy to help people to understand our products and how they work, I am happy to answer every single question even if the question may sound very elementary to you. It also help me to realize/find out where and how people use our products, what steps they are taking to use it as well as what tools and material they use.


Stuart Jordan





Filed under: Turbo Builder's Bog | Posted on May 1st, 2013 by Katerina

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