PU or non PU coated marine canvas

[robmcg]

We are going to make a new sprayhood for the boat. Other canvas jobs we have used PU coated Sauleda which has worked well but is somewhat stiff to work with. Is PU coating a prerequisite for sprayhoods etc or will the uncoated Sauleda do a good enough job?

 

[Tranona]

Depends on whether you want it to keep the wet out or not. Coated is normal for sprayhoods. Not worth compromising on material given the high cost of making it up whether paying somebody or DIY.

 

[Martin_J]

And when you do put it together, doesn't the coated side go on the side you'd not expect i.e. on the inside.

 

[seumask]

Coated for Spray hoods.
I made a spray hood with coated, and then made a dinghy cover with uncoated. Spray hood was water proof the dinghy cover surprisingly less water proof, meaning bailing out the dinghy after rain, not a lot but still noticeable.

 

[Graham376]

I use Sauleda Masacril Special, which is treated but not with the shiny plastic layer, like some. Very easy to work with and last sprayhood lasted 17 years. Specialized sectors – Sauleda

 

[wilkinsonsails]

Use the PU coated fabric for Spray hoods, It’s more stable and will hold its shape better..
The improved waterproof coating also stops drips mid panel.
Use uncoated for breathable covers such as sailcovers ,and pack away covers .This stops mildew forming on the sail cloth as it will vent and dry quicker.

 

[Beneteau381]

We are going to make a new sprayhood for the boat. Other canvas jobs we have used PU coated Sauleda which has worked well but is somewhat stiff to work with. Is PU coating a prerequisite for sprayhoods etc or will the uncoated Sauleda do a good enough job?

We used Saluda coated. Dont even think about doing it without doing patterns. We followed the Sailrite vids. We bought a roll of proper pattern material from Kayospruce. Still have some left. Contact us if you want some, get the max width you need. We made patterns, called them bananas, becuase that was the shape. Sewed the bits on the individual bananas befire putting them together. Easier to get through the saddle.

 

[Gsailor]

How about going with uncoated and coating it yourself?

Camping shops sell the stuff, it is simply silicone bathroom sealer mixed with white spirirt; the purchased stuff is perfect, the DIY stuff can be lumpy if not mixed well.

My tent DIY is waterproof now.

Remembered the name of camping shop stuff : "Fabsill"

 

[geem]

How about going with uncoated and coating it yourself?

Camping shops sell the stuff, it is simply silicone bathroom sealer mixed with white spirirt; the purchased stuff is perfect, the DIY stuff can be lumpy if not mixed well.

My tent DIY is waterproof now.

Remembered the name of camping shop stuff : "Fabsill"

That is not the same. PU coated is a plastic finish. It is waterproof for a lot longer than DIY silicon and white spirits. Our PU coated sprayhood is 10 years old and has spent 7 years in the Caribbean sun battered by UV. its still waterproof

 

[Lightwave395]

Fabsil is great stuff, I treat the hood of my Saab softop with it every year just before winter starts, not sure how well it would work if you tried it to make your own waterproof material though