Product description
WULFF Unigrund Express is a concentrated universal primer based on advanced acrylate polymers, awarded the prestigious Blue Angel eco-label (RAL-UZ 113).
It is developed for highly efficient reduction and equalisation of absorbency on mineral interior substrates. Ultra-fast drying drastically shortens waiting time on site — fewer pauses, more installation per day.
Forms a solid film, binds residual surface dust and ensures an excellent bonding bridge for self-levelling compounds. As a concentrate it dilutes with water up to 1:3 — one bucket covers a large area and directly saves money.
Technical data
| Product type | Concentrated dispersion primer, acrylate-based |
| System | GISCODE D1 — solvent-free |
| Certifications | Blue Angel (RAL-UZ 113) |
| Substrates | Cement screeds, calcium-sulphate screeds, concrete, mastic asphalt, ceramic, chipboard, OSB, stable water-resistant adhesive residues |
| Dilution | Porous cement substrates: 1:3 with water · Calcium-sulphate: 1:2 with water · Between compound layers: 1:1 with water |
| Consumption | approx. 100 – 200 g/m² of prepared solution |
| Drying time | Very fast — depending on climate and dilution |
| Tool | Fine roller or sprayer |
| Packaging | Bucket 10 kg / 5 kg / 1 kg |
| Storage | 12 months, +5 to +25 °C, protect from frost |
| Catalogue code | W-UNI-EXP / Art.: 35442075 (10 kg) |
Areas of application
Cement screeds
Absorbent and normally absorbent cement screeds before compounds.
Calcium-sulphate screeds
Gypsum/anhydrite screeds after mechanical sanding.
Concrete
Old and new concrete in interior areas.
Mastic asphalt
Asphalt screeds class IC10/IC15.
Old adhesive residues
Stable water-resistant adhesive residues.
Chipboard & OSB
Wood boards before installation of self-levelling compounds.
Benefits for installers
- Ultra-fast drying — shorter waiting time, faster project flow.
- Concentrate 1:3 — one bucket covers a huge area, direct saving.
- Universal — from cement to asphalt and wood boards.
- Binds dust — clean substrate, secure compound adhesion.
- Blue Angel + GISCODE D1 — healthy indoor climate.
- Easy application — by roller or sprayer.
Technical data sheet (PDF)
Complete official product documentation — composition, certifications, application instructions.
Request a quote for your project
Send us the quantity, site location and deadline — we reply within 24 hours on business days. Delivery across the region: HR, BiH, SI, SRB, CG, MK, KS, AL.