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PLASTIKIT
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Plastikit: understand the range before choosing
Plastikit is U-POL's polyester-resin and glass-fibre repair system. The present AutoMotoPart range contains four different roles: CAT/5 50 ml liquid hardener only, FIBRE/5 glass-fibre mat, PK1 complete repair kit and RE/1 one-litre polyester resin. Resin needs the correct hardener ratio to cure, hardener is never used alone, and mat provides reinforcement only after full wet-out with correctly activated resin.
AutoMotoPart currently lists 4 Plastikit items. The largest Plastikit groups are 1 hardener, 1 mat, 1 complete kit and 1 resin entry. Plastikit totals can change, so a category count is orientation rather than proof that a particular reference suits a vehicle, workplace or job. The exact Plastikit listing, its current technical information and the item in front of you must agree.
What the Plastikit page actually covers
| Product group in this range | Current entries | Selection focus |
|---|---|---|
| GRP resin, hardener, mat and complete kit | 4 | Distinguish hardener-only, mat-only, resin-only and complete kit; calculate resin/mat quantity and use 1-2% compatible CAT hardener under current U-POL instructions. |
The four entries form one system but have different contents. CAT/5 is a 50 ml catalyst bottle, FIBRE/5 is 5 m² of mat, RE/1 is one litre of resin and PK1 bundles resin, hardener, mat and application items. Check the current pack contents because buying a single component does not create a complete repair setup.
Build a reliable shortlist
First determine whether glass-fibre reinforcement is permitted and capable of carrying the intended non-safety-critical load. Identify substrate, damage extent, access to the back, overlap and finish. Then plan mat templates, resin volume, 1–2% hardener measurement, batch size, ventilation and disposal before mixing anything.
| Check | Why it matters | Useful evidence |
|---|---|---|
| Repair boundary | A laminate is unsuitable for many structural, restraint, pressure or fuel-system duties | Manufacturer repair method and competent damage assessment |
| Component | Resin, CAT hardener and mat each have a separate function | RE/1, CAT/5, FIBRE/5 or complete PK1 pack contents |
| Ratio | Too little or excess catalyst can leave poor cure or accelerate heat dangerously | Accurate 1–2% measurement and current temperature guidance |
| Batch/exotherm | A deep mixed mass retains heat and shortens useful time | Small batches, open compatible cup and pre-cut mat |
| Laminate | Dry fibres, bubbles and poor overlap weaken the repair | Stippled full wet-out, sound substrate and planned layers |
| Exposure | Resin/hardener vapour, contact and sanding dust need separate controls | Current safety sheets, ventilation, PPE and waste plan |
If the job carries an occupant, suspension, steering, braking or crash load, contains pressurised or hazardous fluid, or lacks sound material for overlap, stop and use the vehicle/component maker's approved repair. ‘Permanent’ product wording does not approve a repair design.
Know exactly what each Plastikit item supplies
RE/1 is the one-litre unsaturated-polyester resin. CAT/5 is the 50 ml liquid hardener/catalyst and U-POL's live safety sheet identifies methylethyl ketone peroxide. FIBRE/5 is five square metres of glass-fibre mat. PK1 is the combined professional kit; U-POL lists resin, liquid hardener, matting, mixing cup, gloves and detailed instructions.
Hardener does not repair anything by itself and must not be poured directly onto mat or substrate. Mat without resin is only dry reinforcement. Resin without the correct CAT dose remains uncured. PK1 is convenient but its included consumables do not remove the need for additional task-specific PPE, ventilation, surface cleaner, abrasive, brushes and waste containers.
Measure 1–2% hardener and control exotherm
U-POL's Plastikit technical sheet specifies 1–2% CAT/2 or CAT/5 hardener and says to mix well immediately. Use an accurate method consistent with the sheet and pack instructions; do not estimate a splash or assume the whole 50 ml bottle belongs in one litre. Prepare only the resin amount that can be laid within the available working period.
Curing polyester resin generates heat. Temperature, catalyst percentage, batch size and shape interact: a large volume left in a cup can accelerate, smoke, distort its container or create a fire hazard even while a thin laminate remains workable. Keep mixed material spread over the work, never cap it in a sealed pot and move any unexpectedly hot batch away only if the safety plan allows without exposure.
Prepare, cut and wet out the laminate
Degrease by the U-POL process, remove loose material and abrade the sound repair area; the cited sheet uses P40 for its general process. Remove dust with the approved method and let the surface dry. Cut all mat layers before catalysing resin, allowing the required overlap and staggered edges. Frayed or contaminated mat should not be hidden in the laminate.
Brush activated resin onto the prepared area, lay a manageable piece of mat and stipple rather than sweep until fibres are uniformly wetted and air is displaced. Avoid pools of resin and dry white patches. Let the layer reach the stated condition before repeating. Extra thickness should come from a designed sequence of properly consolidated layers, not one heavy resin-rich mass.
Cure, inspect, sand and finish
U-POL gives an activated working period of up to 20–30 minutes at 20°C and states that gel/cure varies with ambient temperature. A product title saying it sets in 20–30 minutes must not be read as complete cure under every thickness and condition. Record time and temperature, protect the repair from movement and do not load it until the specified cure and inspection are complete.
Look for tacky resin, dry mat, trapped bubbles, voids, lifted edges and inadequate overlap. Do not sand an uncured or overheated laminate. Once cured as directed, use extraction and suitable respiratory, eye and skin protection for glass/resin dust. U-POL says pinholes may be filled with a compatible polyester body filler before a proven primer/paint system.
Professional chemical and repair safety
The current hardener sheet warns that heating may cause fire and that it can cause severe burns and eye damage; it requires original-container storage, cooling/ventilation and protective gloves, clothing and eye protection. The resin sheet identifies a flammable, irritating and sensitising unsaturated-polyester mixture and contains further current hazard controls. Read both full sheets rather than relying on a short page summary.
Keep catalyst away from resin until the measured mix, and never contaminate its bottle with a used stick or brush. Isolate ignition, protect drains and collect liquid residue, cured waste, contaminated cups and sanding debris by the stated route. For boats, tanks and vehicles, remove flammable vapour, electrical, pressure and confined-space hazards through a competent procedure before surface preparation begins.
From identification to a checked result
| Stage | Good practice for this range | Mistake to avoid |
|---|---|---|
| Approve | Confirm GRP repair is permitted and sound overlap is available | Laminating a safety-critical or still-contaminated component |
| Plan | Identify RE/1, CAT/5, FIBRE/5 or PK1 and pre-cut every layer | Discovering missing resin, hardener or mat after activation |
| Mix | Measure 1–2%, mix a small batch and note time/temperature | Adding the whole hardener bottle or returning mixed resin |
| Laminate | Stipple full wet-out, remove air and build planned layers | Leaving dry fibres, bubbles or a resin-rich lump |
| Cure/finish | Protect, inspect, extract sanding dust and use compatible coatings | Loading or sanding from clock time alone |
Record substrate, product codes, batch size, hardener percentage, ambient temperature, number of mat layers and cure/inspection result. Retain this with the repair so a later technician can distinguish an engineered laminate from a cosmetic patch.
Reading real Plastikit references
The Plastikit names below are examples from the current range and show why the complete description matters. They are not universal Plastikit recommendations and should not be treated as a fitment list. Within Plastikit, a shared family word can conceal a different dimension, connector, material, pack format, operating condition or installation side.
| Example listing | What to verify beyond the name |
|---|---|
| Plastikit Professional Resin Hardener - 50ml | CAT/5 hardener only, 50 ml, original container, 1–2% measurement and peroxide safety controls |
| Plastikit Professional Glass Fibre Mat | FIBRE/5 glass-fibre mat, 5 m², clean dry cutting, planned overlap and full resin wet-out |
| Plastikit Professional Resin/Glass Fibre Repair Kit | PK1 complete kit, verify resin/hardener/mat/cup/gloves/instructions and add task PPE |
| Plastikit Poly Resin - 1 Litre | RE/1 polyester resin only, 1 litre, compatible CAT hardener, batch and laminate plan |
The component names describe contents, not finished coverage or approved strength. Coverage depends on mat weight, number of layers, overlap, resin uptake and waste; structural suitability depends on the repair design, not the pack size.
Common errors around Plastikit products
- Buying CAT/5 hardener-only or RE/1 resin-only and treating it as a complete kit.
- Pouring the entire 50 ml hardener into one litre without measuring 1–2%.
- Mixing a large deep batch that accelerates and overheats in the cup.
- Returning activated resin or a contaminated tool to an original container.
- Applying over grease, loose rust, wet material or an unabraded weak surface.
- Leaving dry mat, bubbles, resin pools or unplanned abrupt laminate edges.
- Sanding or loading from the nominal working time instead of confirmed cure.
- Using a cosmetic GRP patch on restraint, suspension, steering, braking, crash or pressure structures.
Plastikit questions and answers
Q: Which Plastikit items are listed here?
A: CAT/5 50 ml hardener, FIBRE/5 5 m² mat, PK1 complete kit and RE/1 one-litre resin.
Q: Does the 50 ml bottle contain resin?
A: No. The live title and U-POL records identify it as hardener only.
Q: Can RE/1 resin cure without hardener?
A: No. Activate it only with the compatible CAT hardener at the current specified ratio.
Q: What ratio does U-POL specify?
A: The cited Plastikit sheet says 1–2% CAT/2 or CAT/5 hardener mixed thoroughly into the resin.
Q: Should the whole CAT/5 bottle be added to RE/1?
A: No. Measure the percentage for the actual resin batch; never dose by emptying a container automatically.
Q: How long is activated resin workable?
A: U-POL gives up to 20–30 minutes at 20°C, but temperature, percentage and batch mass can shorten it.
Q: Why use small batches?
A: Polyester cure releases heat, and a large mass can accelerate and become much hotter than a thin laminate.
Q: What is FIBRE/5?
A: A five-square-metre glass-fibre mat that needs correctly activated resin and full wet-out.
Q: What is included in PK1?
A: U-POL lists resin, liquid hardener, matting, mixing cup, gloves and detailed instructions.
Q: Are the kit gloves enough for every job?
A: Not necessarily. Select all PPE from the current resin/hardener sheets and the cutting/sanding exposure.
Q: Can Plastikit repair a safety-critical vehicle structure?
A: Do not use it unless the exact manufacturer-approved repair method specifies that laminate system and competent process.
Q: When can the repair be sanded or loaded?
A: Only after cure is confirmed under the actual conditions and the approved repair procedure allows finishing or service.
