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Bob
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512 Posts
Hull preservation tape by Dr Shrink, 2"x 108'. Sticks well but leaves no residue when pulled off even after extended time. Fairly thick, edge doesn't degrade unless you hit it hard.
 

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Bob
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512 Posts
With Gorilla Tape I find I have to put blue masking tape down first and Gorilla down on top.

I'm going to look into Dr Shrink, but have also been using shrink wrap tape out of the Kellog Marine catalog.
shrink wrap tape is whats used on wrap seams, hull preservation tape is used to attach edge of shrink wrap to hull. Its thicker, tougher and no residue.

something else that works pretty good for detail masking is heavier grades of quality electrical tape
 

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shrink wrap tape is whats used on wrap seams, hull preservation tape is used to attach edge of shrink wrap to hull. Its thicker, tougher and no residue.

something else that works pretty good for detail masking is heavier grades of quality electrical tape
Bob, how does the Hull Preservation tape hold up to media blasting the water line, especially with wet abrasive?

When I do boats I like taping the waterline and leaving a crisp / clean line?

Currently I do that with blue masking tape and gorilla tape on top.

Thanks
Dale
 

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Trial and Error Opperator
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2,018 Posts
I use the shrink tape also, I was buying from u line
But never seemed to get the same, there is two different kinds, haul tape and shrinking tape.
haul tape looks like shrink wrap tape but is less sticky.
I use on auto, boats etc where protection is needed
just a note, shrink tape on car windows. .. blue tape first. Stuff really sticks to clean glass!
in winter, tape sometimes won't stick good, I use a propane torch and lightly heat it, so it sticks better.
I buy from local store now, same cost as ordering online eith shipping
 

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Bob
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512 Posts
Bob, how does the Hull Preservation tape hold up to media blasting the water line, especially with wet abrasive?

When I do boats I like taping the waterline and leaving a crisp / clean line?

Currently I do that with blue masking tape and gorilla tape on top.

Thanks
Dale
That sounds miserable! Hull preservation tape holds up well enough that I also use it to mask the repaint and it is sharp as paint can't get under it.

One caveat, if I'm stripping a very tough (thick) build-up of hard bottom paint (or epoxy barrier coats) right to the tape I will shoot the waterline first with a finer grade of media at lower than normal pressure with all nozzle motions parallel to the tape in order to strip to the edge without eating the edge. Once I've gone all around the boat at the tape I load up the bigger media and kick up the pressure for the other 95% of the boat.

Stripping typical ablative paints doesn't require that step.

I have not bought the stuff at this place but it looks like the best price I've seen it online http://www.jondon.com/preservation-tape-various-sizes.html
 

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Frog tape, then regular green tape. I make sure the frog tape covers both the regular making tape abd the end of the substrate I want to keep clean

Edit: Just saw this was for blasting
 

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Glen
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I get horrible residue from Gorilla. Just ordered from Jon Don. Been wanting to get hull tape for maybe five years, just never got around to ordering. No stores around here with it. When I have put blue tape down first it never sticks well enough to trust it.
 

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Bob
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512 Posts
Give it a clean dry surface to stick to and it will work well.

For instance, when I'm masking to blast a boat bottom oftentimes there is heavy staining or crud on the hull right above the desired waterline that my hull preservation tape won't stick to very well to so I always go around the boat at the waterline with an acidic hull cleaning solution to remove that stuff, just adds a few minutes to the job and insures that I'll be able to blast up to the tape without worrying about it blowing off or peeling up.
 

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Bob
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512 Posts
Hey guys, I've switched over to 20 mil vinyl pipewrap tape for masking, about same cost as preservation tape but much more resistant to blast and easier to remove though substrate surface has to be clean & smooth because adhesive not as aggressive as preservation tape adhesive. I'm loving it for fiberglass boat hull waterlines. Its thick & tough so blast right up to it and edge stays good so new paint won't bleed up underneath, try it on other stuff too where you need a perfect blast mask line.

https://www.amazon.com/gp/product/B00UYWZ824/ref=od_aui_detailpages00?ie=UTF8&psc=1
 

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I use multiple layers of Nashua duck tape. I'm some cases I use a thicker tape that smells like pine, and it's green. I'll look up the manufacturer on monday.
 
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