Osmo Gap Sealer

About this product:

High quality, one component, flexible sealant that has plasto-elastic qualities. It is acrylic based and suitable for internal projects only. Can be used for filling, fixing and repairing all manner of splits and gaps as well as sealing and filling joints on both finished and unfinished wood flooring, skirting and door thresholds.

Technical Information

Drying Time

1 hour

Key Benefits

  • Can be treated with Osmo finishes after 1 hr
  • Permanently water repellent after curing
  • Resistant to air conditions, stays elastic
  • Easy to apply

Product Information

  • Sizes


Application Method

The joints must be clean and free from dust, grease and rust. No primer is required for non-porous surfaces. On porous surfaces such as concrete, stone, cement and plaster a primer (mixture of one part acrylic sealant and 4-5 parts of water) can be applied. Min/max joint width must be 5mm/25mm. The recommended joint depth/width ratio is 1 to 2. Application temperature is between +5 °C and +40 °C. Immediately after the application, smooth the sealant at once with wet finger or a wet tool. Excess sealant can be removed by a wet cloth. Keep the sealed joint dry at least for two hours. Cured sealant can be removed mechanically. Product dried within 1 hour for finishing. Product fully cured after 24 hours for sanding . Coverage: based on 3mm gaps a 310ml tube will fill in excess of 30 linear metres