hello Henry
are you proposing to seal the hull as the article mentions, where you apply cheap masking tape to the exterior of the hull to prevent leaks and then fibre glass with the matting on the internals of the hull?
The reason I ask you this
1. Advantages
It does make a slightly stronger hull when you fibre glass on the inside - but - that is about it
2. Disadvantages
The disadvantages of fibreglassing in between frames is it can be extremely difficult to get the matt to lie properly over the planks and between the frames without a lot of air bubbles. The other thing is if you taped the exterior of the hull it is extremely difficult to get the tape off and you may end up sanding it off - how do I know this - I have done that and got the teeshirt.
The other thing to discuss is are you going to use polyester resin or epoxy resin? One of the problems of working with polyester resins is you have to get the ratio right between hardener and resin and this can vary between manufacturers - depending on who supplies it to you.
If you add too much hardener, you literally can end up with a chemical fire. If you don't add enough you end up with a sticky mess which can stay sticky forever and you end up scraping it all off.
Also, you have to have the correct temperatures to work in.
Epoxy resins especially Z Epoxy I have found personally is easier to work with and I have found it more forgiving and its a mix of 1 : 1 normally. To me its a lot easier to calculate your quantities. It is not so much affected by outside temperatures and also the other thing is its not so 'smelly' as a polyester resin.
From what I can see, you have already pre-ordered your matting and it sounds likes its a woven matting - similar to a material - rather than fibreglass matting which is pieces of short strand glass bonded together with a bonding agent which breaks down when polyester resin is mixed with it
and NOT EPOXY resin - Epoxy resins will not break down the bonding agent in the chop strand matting but it will work well with woven matting. The trick here is to apply your Epoxy first to the hull and then lay the matting over the top of the wet epoxy mix and staple the resin through the matting. A lot of people make a mistake of pouring resin on top of the matting and trying to work the resin through.
If you are happy with what you are reading and quite comfortable and decide which way you want to try it (in other words what resin you are going to use - epoxy or polyester) and also are you going to fibreglass inside the hull or would you like to do it a different way - similar to the way in which I sealed the Cervia Tug Hull.? This does have its advantages as well -
John