Description
Fox Bonding Primer is a ready-to-use grit primer for indoor walls and ceilings, here in a 3 kg tub. Made on polymer resins and quartz flours, it carries fine aggregate that dries to a rough, gripping surface, so the plaster, structural paint or tile adhesive that follows has something to hold on to. Fox Dekorator calls it Grunt Sczepny, and it sits with the rest of the Fox range in our Fox Dekorator collection.
What This Grit Primer Does
- Gives the next coat a key. The quartz aggregate leaves a rough face that plaster and decorative finishes grip and texture easily.
- Bonds both ways. It sticks firmly to the background and to the plaster laid over it.
- Calms thirsty walls. It cuts absorbency and strengthens the surface, so the next material spreads evenly.
- Evens out the background colour. Patched areas no longer show through as different shades under the next coat.
- One coat, straight from the tub. Stir, then roll or brush it on undiluted.
Fox Bonding Primer 3 kg: Technical Data
| Property | Fox Bonding Primer |
|---|---|
| Maker | Fox Dekorator, an Atlas group brand |
| Base | Polymer resins and quartz flours, with aggregate |
| Pack | 3 kg tub |
| Consumption | About 0.14 kg/m² per coat |
| Coats | One |
| Touch dry | About 2 hours |
| Ready for the next layer | After 4–6 hours |
| Application temperature | +5 °C to +30 °C |
| Density | About 1.2 g/cm³ |
| Tools | Roller or brush |
| Use | Indoors, walls and ceilings |
| Shelf life | 24 months from the production date |
Drying times are for about 23 °C and 55 % humidity; in a colder or damper room allow longer.
What Can Go on Top
- Decorative plasters — from the Fox Dekorator range and others.
- Structural paints — textured and effect wall paints.
- Ceramic and stone tiles — fixed with a tile adhesive once the primer is dry.
- Plaster — including the finishing plasters and fillers we stock.
Before any of these goes over the grit primer, Fox asks you to check the priming advice of that finish.
Backgrounds It Suits
This grit primer is made for interior walls and ceilings in homes, public and healthcare buildings, schools, shops and offices, industrial and farm buildings and transport buildings. It goes onto:
- cement and cement-lime plaster;
- concrete, cast in place or precast;
- bare walls of ceramic or silicate blocks, brick and aerated concrete;
- gypsum plaster, skims and fillers, including polymer-based ones;
- plasterboard and OSB.
How to Apply the Grit Primer
- Make sure the background is load-bearing, seasoned and air-dry, and clean off dust, dirt, lime, oil, grease and old paint that would weaken the bond.
- Sheet over floors, frames and anything nearby: once dry, the primer is hard to get off.
- Stir the primer thoroughly. Do not dilute it.
- Roll or brush one thin, even coat over the whole area.
- Wash rollers and brushes in clean water straight after use, before the primer dries on them.
- Plaster, tile or paint once it has dried, after 4–6 hours.
How Far a 3 kg Tub Goes
| Fox Bonding Primer | Area primed, one coat |
|---|---|
| 1 tub of 3 kg | about 21 m² |
| 2 tubs of 3 kg | about 42 m² |
| 3 tubs of 3 kg | about 63 m² |
Fox gives about 7 m² per kilo. A rough or very absorbent wall, the finish you plan and your own technique all move that figure. For a small patch, the Fox Bonding Primer 1 kg does about 7 m².
Storage and Safety
- Shelf life — 24 months from the production date on the tub.
- Storage and transport — follow the tub label and the safety data sheet published by Fox Dekorator.
- Safety — the same: details are on the label and in the safety data sheet.
Ordering from Renders World
- Dispatch — Renders World processes orders the same day when the stock is in.
- Delivery — our team confirms the delivery time with you; parcels up to 25 kg go next day by courier, and every delivery is to the kerb.
- Collection — from the Renders World counter at Unit 9A, Central Trading Estate, Southampton SO14 5JP, 7am to 5pm on weekdays and 7am to 12pm on Saturdays.
- Returns — items bought directly from Renders World can come back within 14 days in their original condition; goods in paper bags, tinted products and special orders are excluded.
FAQ
Is this a grit primer?
Yes. It contains aggregate and dries rough, which is what gives the next layer its key.
How many square metres does the 3 kg tub cover?
About 21 m² in one coat, at the maker's 0.14 kg/m².
How long before I can plaster or tile?
4–6 hours, once the coat is dry. It is touch dry after about 2 hours.
Does it work on plasterboard?
Yes. Plasterboard and OSB are both on the maker's list of backgrounds.
Can I use it outside?
No. Fox makes it for walls and ceilings inside buildings.

