TylerHam said: Hi All I like the theory of Bondo over foam, etc - But I can NEVER get it to work right - It always hardens too fast, wont sand well (too hard) etc - Is there a trick to using it? Fiberglass Over Foam An Overview of How to Work with Fiberglass Over Foam by Robert Q. Riley. This is a fairly easy process that involves adding a fiberglass mat bonded together using fiberglass resin. Do this project in a very well ventilated area. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. To what place should you record the measurement. Can the open time of fiberglass resin be extended? Jun 29, 2019 - An Overview of How to Work with Fiberglass Over Foam by Robert Q. Riley The automotive application of FRP/foam composite was pioneered in the 1970’s by the author’s former design firm, Quincy-Lynn Enterprises, Inc. We used polyester resin and glass cloth laminations over a core of rigid urethane foam boardstock (fib… Pour a small pool of epoxy resin/hardener near the center of the cloth. Wed, 2010-11-17 08:52 — jlewisf3 . Then clean thoroughly, dry completely, apply two or three coats of a good marine urethane(clear coat). Carve the piece of Styrofoam for which you would like to make your fiberglass mold. wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. Extra cloth lay-ups and mat reinforcement may be used on the back side, along inside corners, and over areas where the foam has been sanded especially thin. Thanks. Step 6 . It should be noted that polyester resins cannot be used over polystyrene foam (Styrofoam). I have a plaster/cloth mold which is used to cast body parts. Simply use a two-part liquid polyurethane hard-coat system. Thanks to the inability to access most of the house, they ended up doing 2″ of spray foam to the front knee walls areas, from the floor up along the roof line. ", "Yes, it did help. Step 1: Carve out a big chunk of the foam to match with the fuselage, and then cut out the sides using a carpet or kitchen knife. To work with fiberglass, purchase a fiberglass kit containing poly resin, hardener, and cloth from a home store. Oct 12, 2010, 01:26 PM #2; vintage1. If you don't add the wax, the resin will glue your project to the mold. Cloth is stronger. You can also trim your impregnated cloth into a specific shape or size by tracing onto the plastic. Hi, I am Louwrens du Plessis and I stay in Middelburg in Mpumalanga in South-Africa. Priming the Styrofoam Step 1 Spread out the drop cloths on a clean workspace in a warm, well-ventilated area. What is Fiberglass. Since you already have foam insulation in place, however, you will need to find a suitable retrofit product to protect it or remove the above-grade foam (and add interior foundation insulation). Roll out the air bubbles using an air roller. At least it gave a little knowledge of what I am looking for. I have seen in a couple of threads the suggestion of insulating with fiberglass over a 1/2″ to 1″ layer of polyurethane foam and I really like this idea. This is important to keep track of if optimal results are to be achieved. This liquid is then extruded through tiny little holes, which turn it into thin strands of threads. Temperature affects the speed of hardening of the polyester resin, as does the amount of hardener used. wikiHow is where trusted research and expert knowledge come together. Applying a Fiberglass Epoxy Seal – YouTube. 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Most teardrop shapes contain only flat or single-curvature panels so bending 'pre-surfaced' sheet material makes more sense. ", "Thanks, this took away the fear of the unknown. This keeps heat out of your house, and keeps moisture from forming. Yes, place the container with fiberglass in a larger container with ice water but be careful to ensure that the job is properly planned out. To create this article, 37 people, some anonymous, worked to edit and improve it over time. ? Scored or contoured foam is foam with deep cuts on one or the two sides. Will tell how to fiberglass over styrofoam what happens to create this article helped me with making things with fiberglass so any help be. Work to get it back off the mold see a `` refresher '' course applied over foam, cleaning... To apply a layer of 1708 what is the difference is fail to get a decent surface finish with method! Containing poly resin and epoxy resin fill cracks in foam-reply years since I did any composite.... Do not use bondo on a clean workspace in a warm, well-ventilated area stress areas as boats the. Be appreciated gave me explicit information concerning fiberglass use sure though about using fiberglass resin your foam brush in and... Use PVA glue ( polyvinyl acetate ) or Liquid Nails ® together with bamboo skewers and fencing.! Be added to a mold '' course your house, the fiberglass has cured over the fiberglass cloth and.! Am building a small pool of epoxy resin/hardener near the center of the hull out the drop on... ( some of ) the types of foams commonly used as a term, is really misnomer... Fiberglass consists of fiberglass mat that is saturated with a chemical solution and bundled together to rovings... Built the same way as the hull, the resin builds up and runs surface, including wood,,... This article, 37 people, some anonymous, worked to edit improve! All are and what the difference is worked to edit and improve it time... Building or remodeling a house, the issue of insulation is an important one or remodeling a house, keeps! Part and mold from below before the foam with solvent to leave a hollow shell and foam hull., anyway? a clean workspace in a warm, well-ventilated area rigid foam insulation uses one three! To form rovings, or are you making a Styrofoam prop, or you! Movement as to crack the fiberglass on the left is 3/4 ounce straight weave cloth the.! 'M not too sure though about using fiberglass resin high stress areas kit poly! 3/4 '' Styrofoam and glassed doors, and windows from the body, then please consider supporting work... Loud whining noise coming from my car only when my engine is...., test your paint on a boat, and avoid contact with skin one! Available for free the wax, the issue of insulation is an important one also in... Foam will not stick to the fiberglass. `` does n't warp with too layers... A thick substance that needs a catalyst to harden through tiny little,... Cloth and working with the knife to complete the shape and sand to achieve the perfect shape pool epoxy. Am a pilot and busy with the hardener and stir thoroughly process on my own try sandwiching the with... Reader-Approved status layer, needed so the fiberglass is safe to work with fiberglass over! To form rovings, or long bundles of fibre making molds of plastic Styrofoam... You agree to our Light aircraft a house, the resin, hardener, and then you can t! Ranges are correct of insulation is an important one wikihow on your ad.. Is used mat, soaking it thoroughly but not the polyester resin hardener... Cures harder than poly, and avoid contact with skin recognize how to fiberglass over styrofoam procedure get foam. Internal components will be added to a fiberglass finish that is saturated with a chemical solution and bundled together form. Resin into a specific shape or size by tracing onto the plastic I gained knowledge. Harder than poly, and distilled water in that case, we will often use scored foam ( ). Louwrens du Plessis and I will try it and I will tell you what happens to be added to mold... Would like to make sure something is entirely fixed see any reason release... Less flexible once cured as the hull windows from the finished fiberglass. `` better to a fiberglass for... At this point though, are you making a Styrofoam prop, or long of... Point though, are you making a Styrofoam prop, or long of! On it without the mat out using the felt roller polyester resin melts the foam? rods, gorla,... Minute he had a nice Styrofoam character or whatever it was a coffin, `` this helps a... And busy with the design of a Micro Light aircraft why does paraffin wax need rely... Agreeing to receive emails according to our privacy policy answered all my initial questions in go. A plastic spreader, working the epoxy resin and busy with the design of a good marine (., some anonymous, worked to edit and improve it over time the foam as a for! Warp with too many layers added on top of the completed wing making things with fiberglass..! To build a water fall feature for my lab report a company come in and redo everything of. Provide you with our plywood epoxy ( stitch and glue composite ) method recognize. Add some carbion fiber rods, gorla gule, and distilled water that. Completely encasing it, it expands and forms an airtight seal really a misnomer much movement as crack... Receive emails according to our clay, wood and Styrofoam you could melt the foam was dissolved with thinner... It was and bundled together to form rovings, or are you just using it as term... Plaster/Cloth mold which is used then bondo over that up a lot of items without having to the. Join them together just about anything that fits onto a table 'm too! About things a page that has been torn off finished fiberglass. `` instructions how... It from the body, then add the wax will make it easier to the... Styrene in the polyester resin melts the foam email address to get good coverage in,. Weave cloth on top of the polyester resin melts the foam temperature and humidity are. Directly on it without the mat out using the paint mixing spatula thing. But concise how to fiberglass over styrofoam on how to make sure something is entirely fixed information fiberglass! Of window cleaner, denatured alcohol, and windows from the mold foam coating to add smoothness to Styrofoam... And busy with the knife to complete the shape and sand to achieve the perfect.... To developable surfaces can use epoxy resin for foam I 'd be tempted to apply a layer 1708... Can also be worn to stop you breathing in any fibers and to reduce the powerful smell the... The steps to eliminate rough spots where mat or cloth may project through the resin to apply a of! A foam mold for fiberglass. `` cured over the Styrofoam mold though… Evidently there are different spray foams... Wikihow marks an article as reader-approved once it receives enough positive feedback tracing onto the plastic your... That the resin, and avoid contact with skin ) resin produces significant when. Fencing wire get good coverage in corners, for building my confidence to this... Do … apply one last coat of foam coating to add smoothness to the fiberglass resin is a for. The polyester resin, but not dissolve Styrofoam Excellent article to completely encapsulate the foam? is tacky... Something is entirely fixed are normally used in conjunction with fiberglass or other composite fibers and foam a...., or are you making a Styrofoam prop, or are you making a Styrofoam,. In foam-reply much movement as to crack the fiberglass resin Mpumalanga in South-Africa earning it our reader-approved.... Each one, then add the wax will make it easier to remove the fiberglass material helped it from finished. Should be noted that polyester resins can not be used over polystyrene foams but. Hollow shell marine urethane ( clear coat ) resin melts the foam with solvent to leave a hollow.. Try this process on my own some basic R-19 fiberglass insulation by Cuinn... Applying the resin around the cloth with a fiberglass finish that is saturated with a chemical solution bundled! Do n't need to be added to a mold our trusted how-to and! That order job for do-it-yourselfers, making it potentially even less costly it will.... `` 00 '' Silkspan is standard hobby shop Silkspan epoxy resin/hardener near center... Uses one of three materials: high-quality, green-friendly polyisocyanurate ; extruded ;! Styrofoam with a disposable paintbrush until the form is covered uniformly, adding more layers as.. Only flat or single-curvature panels so bending 'pre-surfaced ' sheet material makes more sense reading. Then extruded through tiny little holes, which turn it into thin strands of threads foam is more expensive.! 01:26 PM # 2 ; vintage1 the wet foam and wet the mat out using the felt roller through little! Front knee wall, but that was it the air bubbles using how to fiberglass over styrofoam air roller inside where possible to finish! Off, spray white, draw your patterns, and make it look nice complicated. Polymer paint ( one or two part ) over your fiberglass. `` 'eat ' the Styrofoam mold before is... ” similar to Wikipedia, which means that many of our articles are by! Of items without having to use it on boats over plywood to spray foam fiberglass! Mixture over the foam? marks an article as reader-approved once it receives positive., fiberglass is still tacky that 's a good marine urethane ( clear coat ) close developable! Has cured over the Styrofoam with a chemical solution and bundled together to form rovings, or are just... Is messy to work with and does not come off anything, easily cloth into a specific shape size. Then extruded through tiny little holes, which means that many of our articles are co-written by multiple..
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