
About the product
For wall cracks and baseboards: the traditional acrylic sealant
Pattex Acryl 1 is the standard acrylic sealant for indoor jobs: filling cracks and fissures, sealing the join between baseboards and moldings with the wall, finishing frames, and preparing everything for painting. Fast-drying and water-based, it can be smoothed with a damp finger, and tools are cleaned with water. It is the right product for the vast majority of fine masonry home repairs.
UP TO 10% MOVEMENT: perfect for static or low-movement joints. If the crack opens and closes with the seasons or is on a facade, upgrade to AC 401 (15%) or SP 101 (25%).
Why choose Acryl 1
- ✓ Paintable: once dry, it accepts plastic paint without the joint showing.
- ✓ Fast-drying: forms a skin in about 30 minutes, so you can continue working soon.
- ✓ Easy to apply and smooth: thixotropic paste that doesn't sag, can be shaped with soapy water.
- ✓ Odorless and water-based: suitable for working in occupied homes, tools clean with water.
- ✓ White or gray and in 300 ml cartridge or 600 ml bag for large jobs.
Technical data sheet
| Base | Acrylic resins in aqueous dispersion |
| Drying | By water evaporation |
| Density (ISO 2811-1) | Approx. 1.6 g/cm³ |
| Slump (ISO 7390) | Approx. 0 mm |
| Skinning time | Approx. 30 min (23 °C, 50% R.H.) |
| Drying time | 1-2 mm / 48 h (section 20 x 10 mm) |
| Shore A hardness (ISO 868) | Approx. 30 |
| Service elongation | Max. 10% |
| Thermal resistance | -20 °C to +80 °C |
| Application temperature | 5 °C to 40 °C |
| Packaging | 300 ml cartridge and 600 ml bag |
| Storage | 18 months in original packaging, 5 °C to 25 °C |
Where it is used
Repair: cracks, fissures, and plaster moldings on walls and ceilings.
Finishes: junction of moldings, wood, baseboards, flooring, strips, and electrical boxes with walls or ceilings.
Construction joints: concrete, cellular concrete, cement, bricks, fiber cement, tiles, plaster, gypsum, stone, wood, laminates, polystyrene, and glass and aluminum indoors.
Also: bonding polystyrene sheets and sealing interior joinery.
On what substrates
Concrete, cellular concrete, cement, bricks, fiber cement, tiles, plasterboard, gypsum, stone, wood, laminates, polystyrene, and glass and aluminum indoors.
Do not use in joints with permanent contact with water or apply in rainy weather. For bathrooms and wet areas, use Silicon 5 Universal.
How to apply
- Surfaces must be clean, dry, and free of dust and grease.
- Cut the nozzle to the bead size and apply, filling the crack or joint well.
- Smooth before skinning (you have about 30 minutes). Use a damp finger or spatula.
- Clean tools with water and cover the cartridge with plastic film to preserve it.
Which Pattex acrylic do you need?
Joint with movement or outdoors? — AC 401, more elastic (up to 15%) and suitable for outdoor use.
Exposed wood that will be varnished or sanded? — AC 411 Wood, in five shades and sandable.
Joint with more than 15% movement? — SP 101, reaches 25% and is also paintable.
Bathroom, shower, or contact with water? — Silicon 5 Universal, anti-mold silicone.



















