BEST WAYS TO LAY FIBERGLASS UPSIDE DOWN / OVERHEAD??
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- Опубликовано: 20 сен 2024
- 3 different ways to approach this, all with their own advantages (depending on what you're looking to do :-)!
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![How Thick is “This Many” Layers of Fiberglass? | Windpuff's Rebuild [S1 Ep 7]](http://i.ytimg.com/vi/yA6y8UewRh4/mqdefault.jpg)
The amount of demo preparation you provide in order to give a first class representation of real world application and mishaps is top notch. That alone has made Boat Works my go to channel. The commentary is fact filled, as well as lighthearted, and the information provided shows you are a master of your craft. Thanks for all the effort.
Good to see you again. Those tips are super helpful. Thanks a bunch.
Must admit.... I am super curious about the variance in bond strength as well as the amount of entrapped air. If you are looking for an idea for the next video: cut a strip out of the middle of each of these sections, take a look for bubbles with a magnifying glass, and then flex/bend/scrape until the fiberglass pulls from the substrate. It would be really cool to see how the results stack up.
Stay well. Hope your shoulders are doing better. (I actually winced a little when you were carrying around the sheets of OSB.)
Thanks for this demo, one of those most daunting applications of glass is overhead. Well done sir
A rarely talked about topic. Another great episode Andy. 👍👍
1. Dumpster Dive a foam couch cushion of the required dimension and glue to plywood. 2. Wrap in 5mil plastic. 3. Lay up and wet out as many layers of CSM, Roven Woving, S-Glass ( whatever ) off to the side on parchment paper. 4. Transfer this to cushion and wedge upward where you want the laminate using precut sticks to compress the foam.
Thanks for the advice and the video about this "sticky problem". It's been an issue for me a few times, and now, it makes sense.
Just ordered my Total Boat fairing for a project I learned to do from your channel, I even saw you in their video advertisement for the product! So Cool!
Thank you very much! I am the guy who sent you an email via your website to ask you for this video. It seems you saw it. I wonder if it would be so easy if it was completely horizontal, under a roof for example. I guess I will have surprises. thank you again, from France :-)
My need to make skateboard battery enclosures from a plug and mold led me to your videos, which have all been very tasteful, thorough and well explained. Good work.
As all your videos, this one is especially good. This should be part of a trade school lesson. In addition to be conscientious you also are putting some fun into your work. Thanks, Richard
Great video Andy. Loads of great tips in this one. 👍
We use adhisive in production whith injectiontecnic
The light coat on the glass to help it stick was a great tip thank you
WOW, Damn just Watching you Work I have Learned So Many Great Tips . Thank you Andy and Total Boat, I use only Total Boat Products in my Builds So COOL,,
Thanks so much for this video - it arrived at the same time as a need to repair a hole below the water line of a boat on a trailer - so perfect timing.
FYI when you pour from rectangular gallon cans hold the opening at the top to minimize (almost eliminate) drips.
Thank you for this today im about to cover a 36ft timber cruiser of mine ive done some small fiberglass jobs in the past so l was starting to watch other RUclips videos and love the info such a help to me .
Cheers Mal
Watching the table roll away was great. I laughed besouse i can soooo relate. And the look was like (really) ok whatever. Totally a me thing. 😅😅😅😅😅
Really enjoyed the video and learning more fiberglassing tips. Glad to see you doing that. I tried some overhead layups but didn't like where air got entrapped due to gravity working against me. Maybe you could do a video on how to address white spots in glass layup, when and if and it needs to be delt with and how to approach it. Creating a test surface took longer than laying up the three test panels so Bertram projects might be quicker in the long run.
Nicely done Andy. Personal preference is a 1.5 down first and let that start to set then come in as you did. I know they say you can use it as you did but I have had better results this way especially with uneven surfaces from having some younger crew members prepping. Very happy you made it clear the situations for other methods ..if it can sink...do it the first way ... otherwise ...dealers choice
And again you got a love, a good channel that’s out there just trying to teach good knowledge
Gr8 vid Andy! I've used 3M 77 for years setting my glass cloth up when fiber-glassing wings on R/C planes. Some are still flying over 30 yrs later, so I can attest it works fabulously!
Hi, I've just bought a a 38 ft. catamaran. The topsides are damaged from inappropriate fender placement during storm surge at a marina berth. There are indents/ rippling along the entire outer topsides, both sides. I intend to sand these out fill and fare then initially use 7.5 oz cloth. I have a 38 inch roll which is just over width for the area that needs to be repaired. I want to use 1 continuous length. How would you recommend I secure this cloth before applying the resin? Would the spray adhesive be appropriate for this task?
Great lesson! Thank you, SkipRay, Kerry, Ireland.
I hadn’t seen a video in a while good to see you back
Spring rush started early, it's been crazy busy lol!!
Thanks... I'm working on a Catalina 25, and the cockpit decking has got a little more bounce than I'd like... Very timely video as I'll be laying some glass under the decking to firm it up.
Love the videos! Getting ready for some glass work on an old sailboat I picked up and this is definitely helpful
Thanks for including the rigging
I am well schooled in the fiberglass dept. That being said my belief is when you quit learning is when you die! I have picked up a many good tips from your video's and enjoy the content. I was curious though why you did not finish off with a bubble roller?
Thanks for the time and effort you put into the videos and teaching this ;-)
I have a old RV trailer that has a very thin aluminum skin on the outside, the bad thing is that the aluminum skin is bubbly in various areas and has some hole due to corrosion.
My idea is to remove the aluminum and the thin plywood that the skin is glued on to and then put new 4mm plywood and put fiberglass on the plywood instead of the aluminum.
The aluminum is probably only around 0.4 mm thick. My question is : How many layers of fiberglass would you apply ? And what is the procedure after the fiberglass has dried to make it water tight ? It is one of these lightweight european trailers which uses like a sandwich construction (plywood - styrofoam - plywood)
Regards from Denmark
Chris
Found your video very informative and direct to each point of the process
I just fixed a hole in the bottom of my boat (front lower keel area) and had to lay on the ground looking up. I just brushed it on and let it tack a little and then slapped the glass matt on with my hands and then used a brush to push air and a putty knife. Worked pretty good for me. Pretty slick idea on that last demo. Good stuff as always on your channel. Thanks.
Very informativie. Thank you.
Great video. Just what I am after as I need to do a repair on the bow stem of my 19ft cruiser. The gel coat and 2 layers of woven mat has worn through to the timber stem in places. I was going to fill holes with fibre reinforced filler then two layers of woven mat over the top. Then fair edges with fibre reinforced filler. Two coats of micro spheres and sanding to finish.
Great explanation . Best of all you were able to show us some sanding…
Great vid. 💯
I learn so much from you. Thanks.
Thanks as always . I’m pretty sure I’ve used all 3 techniques all at once for some reason or another.. 👍
Your videos are fun to watch and very informative. Thank you!!
Fantastic demonstration, thank you.
I Remember that Boat ! And I remember how Hard you worked on it … ice Job !!
Terrific lesson! Great looking shop!
Interesting watch. I am a novice at this and learn lots by watching your videos. It’s been awhile, but I seem to recall a demonstration you did to see what happens if you don’t wet the back of your fiberglass. I found it interesting on this demonstration for the second and third example that you would apply the glass without wetting the back. I am sure that probably weighs into why that is not a good option for structural repairs, but it still seems that there would be a bigger risk of delaminating on examples two and three…. Am I off base here?
😂 I love your style of sounds when you know what going to happen 😅
Now do a demo with the board at 90 degrees…..lol. You rock Andy. Don’t know if I would trust that 3M product after it dried to the surface. Don’t know how it would bond to anything after drying.
At what point do you choose to use Polyester vs epoxy? And I'm trying to understand why you are applying on top of a gel coat, wouldn't it be better to sand off the gel coat for a better bond? I though gel coats was met to be applied on top of the finished glass repair. Forgive me if this is a stupid question, I'm new at this and neck deep at restoring my very first boat while trying to understand how this all works. I'm working my way through all your videos, I love your channel, very helpful, Thank you.
Thank you for this video, I'm about to start a rather ambitious project with a i/o conversion to a euro transom and will be adding 2 or 3ft to the hull. Was apprehensive about flipping the hull to do the glass work. This played right into the question of how I was going to do the glass underneath
@5.35. Not a problem, all part of the plan. Right, Andy?
You must love the windows beside your work area!
Yay first from Okinawa!
Always great to see a pro in action, sharing his knowledge. Maybe you’ve talked about this before in some video but why aren’t you using a respirator or mask of some sort when working with polyester? I’ve only worked with epoxi but have read that that’s one major differences that polyester stinks and has dangerous fumes?
Very helpful. Excellent video.
Great as always and good see you
Out of pure curiosity: Have you ever tried working with Flax in a combination with resin a a composite? It is gaining popularity over here (Germany / Europe), a little more complicated, but promises to have a way smaller Co2 signature than glass fiber + epoxy / polyester. I could see some interesting applications for it, especially inside the boat, as it has some real nice optics of its own :)
And of course: A great and very interesting video (as always)!
Andy I had to go and get my hair cut and shaved due to epoxy resin dried and hard. Not a fun experience 👍👍👍
Apparently, poly is thinner/less viscuous than epoxy, as it looks to penetrate 1708 much better/faster. During my foredeck-from-underneath project, I pre wet the glass (approx. 15"x40") atop a sized pc. of sign plastic, allowing it to soak in all around the edges and half coat or so in the field. After a thin coat of neat resin rolled on the overhead, I applied a graded coat of colloidal silica thickened epoxy. That made a sticky "paste" to grab and hold the wet cloth. The stiff plastic sheet held up the cloth while I pressed it in place. Now pretty well stuck fast, I rolled on any additional/remaining resin, fin rolled as needed and touched up with brush.
Without the "paste", the 3.5 oz/sf of resin was too heavy to self-support; as I found out with the first section.....ooops!
Thanks again for sharing your knowledge with us 😂. I have a ceiling (roof) to cover on my boat and I'm not looking forward to it. After watching you I think I'm ready 😢
Instant like my friend.
I wanna see those Hondas purring!
Love your work.
👍 thanks man
I wonder if there is a video out there or source that explains the use of mat versus roving and why they are used together or not.
Nice work.
Nice episode now a demo using epoxy doing the same thing would be awesome
Hi Andy, which method would you use for applying glass after peeling the gel coat below the waterline to repair blisters? I'd love to see you do a video(s) on a complete blister repair job. Also, what type and weight of glass would you use to seal the polyester hull after repairing the ground out blisters?
Thanks for the tips. Your videos are great. I’m wrapping my house boat this month just to waterproof the wood. What resin and mat would you recommend? Mind you were on a budget but I only wanna do it once also. Thank you. Again love your videos.
Love your instruction Andy! Is this process the same for epoxy?
Great! Best video yet 😎
Excellent!
This comes at a great time for me. Im about to seal up some core up under the deck and the sides(sorry can't remember the name of that part). Factory core is still solid but they left much exposed. Plus the modifications I'm doing as well.
I have a question if you don't mind. Rewatched when you put the coosa in the Bertram transom. Others claim you should use a toothed trowel to apply the resin. You used a yellow spreader(bondo spreader is what I would normally call it). Which makes more sense to me. I feel there would be less air trapped that way. Im looking for maximum strength possible. Cold weather has me delayed on dropping my core in. I know this is a patreon style question but I don't have an account or any of that stuff.
At the point where the roller started to dry out and pour the glass was just as important as the rest of the video. Thank you for all your hard work……………
I really enjoy your videos and they are very helpful !! So I have a question. What is that cutter you use to cut the mat?
Good video, but how do you get the pieces of napkin out of the resin?
Thanks for this video. I was almost wanting to avoid, covering a ceiling. With 3M 77 it seems so incredibly easy.
But i don’t fully understand why you won’t use this for structural shapes? Could you please 🙏 explain this further?
Also do i understand correctly, that the lighter the chopped strand math, the easier it becomes to work above your head?
And which resin would be lightest to work with?
In my case, I don’t have any structural strength to consider. For me its just laminating with the thinnest cloth or math possible on insulation foam, to seal of the roof.
The goal is to keep the weight down, and make the ceiling as light as possible.
Did you deliver what you promised? I see a sloping surface. Is it possible to do this when you are truly laminating overhead, like on the inside of a cabin roof?
Great demonstration. But I actually thought you were going to start another project.😊
When the Spring rush levels off then I'll be back on the Bertram project. Right now there just isn't enough time in a week to make much progress on the boat (at least not enough for a well rounded video), so these types of technique vids are much more manageable given the time constraints :-)
Question... i didn't catch whether or not you catalyzed the resin before you rolled it onto the board? Obviously you did catalyze the resin before rolling onto the 1708.
Wouldn't you know my first fiberglass repair is going to be on a crack I found under my boat. It's about a 18 " long and definitely looks like it's through the gel coat. It almost looks like a deep scrape from a bad trailer bunk or something. I'm going to dremel it out and find out if the fiber glass is damaged. I cant find any damage inside the hull.
When do you use the aluminium roller you can buy, when you buy the resin and glass? Is'nt it nessecery?
Not related to this video, but I could really use some guidance. I’m building a dory. Ply on frame, fiberglass on the outside. Southern yellow pine and fir marine ply on the inside. I’m trying to figure out how to finish the inside of my boat. I’m m in Florida so it will get wet but it will live in a covered shelter. Every time I get advice there are five more people telling me why it’s terrible advice. Epoxy coat, penetrating epoxy and paint, oil, just paint,
What’s a fella to do?
Any advice from you or your community would be greatly appreciated.
Great demo. Just out of curiosity, is there any significant difference in the amount of resin needed for the different types of applications? If you were trying to cut back on waste, which method might be better?
That was great thanks
Do you always gel coat over existing fibre glass before adding new coat 🤔
Hi, I've just bought a a 38 ft. catamaran. The topsides are damaged from inappropriate fender placement during storm surge at a marina berth. There are indents/ rippling along the entire outer topsides, both sides. I intend to sand these out fill and fare then initially use 7.5 oz cloth. I have a 38 inch roll which is just over width for the area that needs to be repaired. I want to use 1 continuous length. How would you recommend I secure this cloth before applying the resin? Would the spray adhesive be appropriate for this task?
Have you ever used vacuum bagging/resin infusion to do difficult layups like this? What do you think of it?
Andy, one of the issues i have when using resins and fibre-glass is the wastage of rollers, etc. with the resin setting. What is your work around, or do you just expect this wastage?
Fiberglass tips 🤤
WHAT ! I didn't quite hear what you said when the table rolled out from underneath your, "Demo Hull". Glad the girls weren't around..😉
This has bin…. A boatwerx tadaye… poducktion! Love the ending. You can play that at her wedding one day.
were is the picture of the black show boat you did 15 yrs ago ? CANADA
You only spray the surface? Not both the surface "and" glass?
When using epoxy in a u shaped open mold would precoat the mold? Thanks
Does the same process work with epoxy, say total boat or west systems?
does the tack-up method work with epoxy resins as well?
Question for you about beefing up my bow where it meets the shore line when beaching, I'm thinking I could put a 30 inch strip of 1708 there but not sure if there's better ways to reinforce this area. Any input would be appreciated 👍 thanks. And hello from Alaska
Look up a product call Keel Guard. Sounds like exactly what you're needing ;-)
How would i do a raised floor for a motor cover I have a 30' 1972 cruiser and it has a sliding glass door that walks out over the motors. I have redone transom .But now trying to figure out the cover/floor with a way to get down to motors and be able to walk around on it..just wondering if you had any ideas for me or a video I could possibly use to get some wisdom.
Do these techniques change at all with epoxy?
Only exception *MIGHT* only be demo #3 with the spray adhesive (but I'm not possitive about that). The other 2 demo's would work the same :-)
What about working on a curved surface? There aren't any flat panels on my sailboat hull. Seems like avoiding wrinkles would be impossible.
Two people and skill required… practice
Because we were Inverted! !
I’ll save you a lot of time. Use Spray mount. There.
With the spray adhesive how many layers could you lay up dry before wetting it out?
Can Fiberglass be used on treated lumber?
So. Are the shoulders fixed?
I would like to know if epoxy over 3M77 glue does work as well as with polyester resin (in terms of being dissolved by epoxy vs. Polyester because of the styrene in polyester, and no styrene in epoxy) ?
When vacuum bagging with epoxy spray adhesive is used extensively to hold the matrix in place before applying a vacuum.