Dekalin DEKAFINISHER 500 ml spray - water-based smoothing agent for fresh joints of MS polymer adhesives and sealants
- Ready-to-use, mild, neutral smoothing agent for visible joints made with DEKASYL compounds. Makes smooth, neat joints easy, 500 ml spray bottle.
Dekalin DEKAFINISHER is a water-based smoothing agent. It is ready to use, mild and neutral, and is designed to smooth the surface of freshly applied, visible joints made with DEKASYL MS polymer adhesives and sealants. With it, the spatula or finger does not stick to the compound and the joint gets a smooth, even surface.

Key features
- Ready to use, in a spray bottle
- Mild, neutral, water-based
- For all DEKASYL MS polymer compounds
- Smooth, neat visible joints
- For use at +5 to +35 °C

Use in motorhomes and caravans
DEKAFINISHER is useful for every visible joint made with a DEKASYL compound: around windows and doors, on panel overlaps, profiles, in the motorhome bathroom and kitchen. Note: the agent must not get between the bonded surfaces and the compound, as this reduces adhesion.
If the joint is to be painted later, clean off all residues of the agent thoroughly, because DEKAFINISHER contains substances that can impair paint adhesion.

How to use, step by step
- Shake the bottle before use.
- After applying the compound, spray its surface with DEKAFINISHER.
- Smooth the joint with a spatula, a PVC tube or your finger before the compound skins.
- Rinse the agent off the area around the joint with clean water to avoid streaks.
- Before painting, clean all residues of the agent from the joint.
What you get
- 1 x Dekalin DEKAFINISHER, 500 ml spray bottle
How to choose the right product
Durable bonding and sealing with DEKASYL compounds starts with surface preparation. The manufacturer provides three auxiliary products used at successive stages of work. The highlighted row is the product on this page.
| Product | Work step | Function | Form |
|---|---|---|---|
| DEKACLEAN Ultra | 1. preparation | cleans and degreases, flashes off in approx. 3 min without residue | 1 l bottle or sachet with cloth |
| DEKAVATOR 22 NF | 2. activation | improves adhesion of DEKASYL compounds on smooth and difficult surfaces | 30 ml or 250 ml can |
| DEKAFINISHER | 3. finishing | smooths fresh joints of MS polymer compounds | 500 ml spray bottle |
Safety at work
- Labelling according to the safety data sheet (version of 08.05.2024): EUH210: Safety data sheet available on request.
- Read the label and the safety data sheet before use. Work in a well-ventilated area, wear protective gloves and, when working overhead, safety glasses.
- Keep out of reach of children. Dispose of residues and packaging in line with local regulations; do not pour into drains.
Storage and shelf life
Store in the tightly closed original packaging in a dry place, away from frost, heat sources and direct sunlight. The best-before date is printed on the pack.
Matching products
- DEKACLEAN Ultra 1 l - cleaner
- DEKACLEAN Ultra cloth - pre-soaked cloth in a sachet
- DEKAVATOR 22 NF 30 ml - adhesion activator
- DEKAVATOR 22 NF 250 ml - activator in a larger pack
- DEKASYL MS-5 white 290 ml - structural adhesive
- DEKASYL MS-1 white 290 ml - universal sealant
Technical data
| Parameter | Value |
|---|---|
| Product | Dekalin DEKAFINISHER |
| Base | water-based |
| Content | 500 ml |
| Packaging | spray bottle |
| Density | 1,02 g/cm³ |
| Application temperature | +5 to +35 °C |
| EAN | 4046085621446 |
Frequently asked questions
Can I use water with washing-up liquid instead?
The manufacturer recommends DEKAFINISHER because it is mild and neutral towards MS compounds. Household solutions may contain additives that impair adhesion or leave streaks.
About Dekalin
Dekalin is a German brand of adhesives, sealants and protective products used for years by motorhome and caravan manufacturers and by caravan workshops. Technical data sheets and safety data sheets are available on the manufacturer website dekalin.de.











