Not medical advice. This guide is general purchasing information only.
Short answer: Plaster and synthetic casting materials are two different ways to build the same layer of immobilization, and most rehab clinics end up keeping both on the shelf — plaster splints for the classic creamy, easy-to-mold formula, and fiberglass casting tape for a lightweight, rigid shell that the manufacturer says reaches weight bearing in about 20 minutes. The buying decision is really about your workflow: how many casts you apply per week, which widths your clinicians ask for, and how fast you need treatment rooms back. Which material is used for which patient is set by your clinician, not by a purchasing page like this one.
What actually differs at the bench
Both categories are knitted or woven carriers impregnated with a binder that hardens after water activation. The manufacturers describe them differently, and those differences are what change your inventory math.
| Attribute | Plaster (Gypsona® S) | Fiberglass (3M™ Scotchcast™ Plus / Delta-Lite®) |
|---|---|---|
| Formula | Extra creamy plaster formula with a hard, polished surface; interlocked cotton leno-gauze is described as reducing plaster loss for more durable, stronger casts. | Scotchcast Plus: water-activated resin with a porous weave. Delta-Lite®: fiberglass cast tape described as offering rigid support and high lamination. |
| Setting / working time | Easy application and short setting time. A specific number of minutes is not stated, so check the box. | Delta-Lite® Plus has a 3–5 minute set time; Scotchcast Plus is a water-activated resin that lets you control working time to suit the application. |
| Load and handling claims | Easy to remove with cast scissors or a cast saw. | Scotchcast Plus and Delta-Lite® both state weight bearing in about 20 minutes; Delta-Lite® Conformable adds that its low tack means the adhesive does not stick to gloves. |
| Sizes we carry | Gypsona® S plaster cast splint, 5 x 30 in. Other sizes are available. Call (614) 654-6591 to ask. | Scotchcast Plus casting tape in 2, 3 and 4 in widths x 4 yd; Delta-Lite® conformable fiberglass 3 x 4. |
| Storage | Sealed, dry shelving; plaster is moisture-sensitive, so rotate stock — first in, first out. | Also keep dry, but synthetic tape tolerates normal clinic humidity better between uses. |
Neither material is interchangeable with the other, and we do not sell one as a substitute for the other. If your protocol calls for a specific brand, buy that brand. If you are converting a plaster-based service to synthetics (or the reverse), the table above shows the factual difference; everything downstream — patient mobility, skin care, activity level — belongs to your clinician.
How to choose what to stock
1. Start from the material your clinicians already open. Ask which brand and width they request. Stock the widths that get used and drop the ones that sit. A casting shelf that carries two dead widths is a shelf that will be out of a live width on a busy morning.
2. Match splints versus rolls to your case mix. A 5 x 30 in plaster splint is a single, predictable unit for extremity splinting. Casting tape rolls in 2, 3 and 4 in widths cover small-hand through thigh work — see our sizing guide for which width goes where.
3. Do not forget the layers underneath. Casting tape does not touch skin. Stockinette and cast padding are consumed in larger counts than the tape itself, and they are the part of the cast patients complain about when they run short.
4. Price per application, not per roll. Roll counts per cast depend on limb size and the number of layers your protocol calls for. Count what one application actually uses in your clinic for a week, then set your reorder point from that number instead of a guess.
5. Buy a small test quantity first. Before committing to case quantities, order a short run of one width and one plaster size, put it through a week of real use, and confirm the working time and handling match what your clinicians expect.
What we stock
- Gypsona® S Plaster Cast Splint, 5 x 30 in — plaster splint with the creamy formula and interlocked leno-gauze described above.
- McKesson White Polyester Cast Padding, 4 in x 4 yd — works with any type of casting material, per its product description.
- Delta-Net® Black Synthetic Compression Stockinette, 3 in x 25 yd — synthetic fibers, soft conformability, dispenser box.
- Splints & braces collection — casting and splinting materials in one place.
- Mobility & orthopedic collection — post-cast mobility aids, boots and braces.
- Rehab clinic supplies collection — the standing-order list for therapy practices.
Frequently asked questions
Is fiberglass always lighter than plaster?
Scotchcast Plus is described as lightweight for easy mobility, and our plaster products do not list a cured weight. Compare the spec details on each product page rather than assuming; when a page is silent, call (614) 654-6591 and ask us.
Can I stock only one material?
Many studios do. Clinics that also splint in-house, or that work with patients whose skin tolerance is a concern, usually keep plaster on hand as well. Your clinician sets the requirement; then your par levels follow it.
Does the 20-minute weight-bearing claim mean a patient can walk right away?
No. That line is a manufacturer statement about when the material itself develops strength — it is not instructions for a patient. Activity clearance is set by the treating clinician.
How do I keep plaster from going bad on the shelf?
Store it sealed and dry, rotate first in and first out, and keep boxes off the floor away from sinks and mops. Moisture before application is the usual cause of a bad set.
Do you sell veterinary casting materials?
The same casting lines are listed under our veterinary supplies collection; confirm sizing against the animal patient and the listing. For pack sizes and case counts, see the product listing or call (614) 654-6591.
Not medical advice. This guide is general purchasing information only. It is not medical advice, diagnosis or treatment, and it does not replace the advice of your doctor, nurse or other qualified clinician or the manufacturer's instructions for use. Always follow their guidance for your situation.
