Technical specifications
P1 system
P1 system
technical information.
Product performance, coverage rates, application requirements and system specifications in one place.
Stockist information
Technical specifications at a glance.
P1 is engineered to perform across a broad range of conditions and substrates. The system is designed with working installers in mind — every specification reflects real-world application, not laboratory ideals.
01
System specification
Core product details, coverage, cure times, storage and performance data.
| Specification | Detail |
|---|---|
| Resin type | Flexible hybrid polymer (UPE 250) |
| Available colours | Light Grey and Dark Grey (standard) |
| Reinforcement | 225gsm chopped strand matting (EB 225 CSM) with 50mm overlaps / option for 450gsm |
| First coat coverage — smooth | 0.9 – 1.2 litres/m² |
| First coat coverage — rough | 1.2 – 1.7 litres/m² |
| Second coat coverage | 0.5 litres/m² |
| Unit size | 15 litre (covers approximately 10–15 m² per unit) |
| Cure time (normal conditions) | 30–60 minutes minimum before overcoating |
| Maximum overcoating window | 7 days (acetone wipe and sand required beyond this) |
| Application temperature range | 1°C to 30°C (accelerator required below 5°C) |
| Substrate temperature | 1°C to 40°C |
| Maximum relative humidity | 85% (surface must be at least 3°C above dew point) |
| Rain proof | 10–20 minutes after application |
| Shelf life | 12 months from manufacture (unopened, stored correctly) |
| Storage temperature | 0°C to 25°C, out of direct sunlight |
| Fire classification | BROOF(t4) — unrestricted use under national requirements |
| Guarantee | 20-year product guarantee; workmanship guarantee via approved installers |
02
Catalyst quick reference
Catalyst dosage is temperature-dependent. Always perform a test mix in prevailing conditions before starting application.
| Temperature range | Catalyst rate | Scoops per litre | Accelerator |
|---|---|---|---|
| 1°C – 4°C | 4% | 4 scoops | Essential |
| 5°C – 9°C | 4% | 4 scoops | Recommended |
| 10°C – 14°C | 3% | 3 scoops | Not required |
| 15°C – 19°C | 3% | 3 scoops | Not required |
| 20°C – 24°C | 2% | 2 scoops | Not required |
| 25°C – 30°C | 2% | 2 scoops | Inhibitor optional |
Important:
Never use fewer than 2 scoops per litre in hot conditions, and never more than 4 scoops per litre in cold conditions. Accelerator must be fully mixed into resin before catalyst is added — they must never come into direct contact with each other.
03
Primer selector
Choosing the correct primer is straightforward. If your substrate is not listed or you are unsure, carry out an adhesion test before proceeding.
| Substrate | Recommended primer |
|---|---|
| Asphalt | P1 Universal Primer |
| Concrete / screed / brickwork / masonry | P1 Universal Primer |
| Built-up roofing felt / mineral cap sheet | P1 Universal Primer |
| Timber (OSB) | P1 SA Foil-Faced Carrier Layer (preferred) or Universal Primer |
| Tissue-faced insulation / Rockwool | P1 SA Foil-Faced Carrier Layer |
| Single-ply PVC | P1 SP Primer 202 (subject to adhesion test) |
| Single-ply TPO / EPDM | P1 SP Primer 202 (subject to adhesion test) |
| Liquid applied coatings | Subject to adhesion test — consult technical |
| Metals (detailing only) | P1 Metal Detailing Primer |
| uPVC (pipes, rooflights, upstands) | No primer required — abrade and solvent wipe |