There is a bewildering range of epoxy resins on the market today.
So, which resins to use when building wooden boats?
There are two main types in use in boat building.
However, despite being used to build GRP boats they are not suitable for building with wood.
Epoxy type resins have superior ability to bond to wood.
They are much less porous and have superior gap filling ability.
As with most things in life you get what you pay for.
Good quality marine epoxies are expensive.
The less you pay the more likely it is that the resin has been diluted.
Whether it’s been diluted with cheap filler or non solvent thinner it will reduce its quality.
Stick to (sorry about the pun) a good quality, well known brand of ‘marine’ epoxy, it’ll pay in the end.
Before we get carried away with how wonderful epoxies are we need to bear in mind that there are some and there is a growing concern among the scientific community about the adverse health and environmental risks of traditional petrolium based epoxies.
come in two
parts, the resin and a hardener
Mixing ratios will vary from one product to the next.
are numerous epoxy resin thickeners which are available commercially,
such as micro balloons, talc, silica and the like.
Most are strong and sand easily and are available in a range of colors.
You can use sawdust or even white wheat flour.
I have heard of pulverised limestone and Portland cement being used successfully, however these must be a bugger to sand.
A layer of fiberglass cloth is used to add a high degree of protection, strength, abrasion and impact resistance. There are a number of different forms.
There are some specialist epoxy resin coatings which can be applied to damp and saturated surfaces and even underwater.
There are also underwater epoxy putties which can be used for emergency repair work.
Epoxies present more health and environmental risks than any other
While the manufacturers of epoxies seem to prefer lay persons such as myself not to have access to the latest scientific findings, some of the concerns can be about Bisphenol A can be read here.
it is the
hardeners which are the main cause for concern.
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