SiMP-Seal Teak 680 | One-Component SiMP Teak Deck Sealant, Waterproof, Saltwater-Resistant, and UV-Resistant

Technical Data

Instructions for Use

Proper surface preparation and thorough cleaning are necessary to ensure perfect adhesion of SiMP-Seal Teak 680 to joint edges. The joint must be clean, dry, and free from dust or contaminants. Ensure that the decking adhesive has fully cured before starting the sealing process.

For restoring worn joints, remove all old sealant completely. Clean the surfaces to be bonded with a cutting knife to ensure the wood is completely clean before applying fresh sealant. Ensure that the teak planks are dry, with moisture content not exceeding 14%. Higher moisture levels can affect the size stability of the planks and subject the sealant to excessive mechanical pressure, resulting in adhesion issues. Measure the temperature and humidity, ensuring that during application, the temperature is between 5°C and 35°C and humidity is between 50% and 70%.

Degrease the joints with acetone or MEK. Use a clean cloth and change it frequently to avoid contaminating the surface. After degreasing, allow the solvent to evaporate completely before applying U-Primer 199 DC. Apply a thin and even coat of U-Primer 199 DC along the edges of the planks with a brush. Ensure the primer is applied evenly. Protect the treated area from dust and water and allow it to dry for 60 minutes under suitable conditions. Sealing with SiMP-Seal Teak 680 must be done within 24 hours of applying U-Primer 199 DC; otherwise, the primer needs to be reapplied. Place a tape at the bottom of the joint to prevent “three-point adhesion” of the sealant.

Cut the nozzle to fit the joint width, slightly smaller than the joint. Apply the sealant from the bottom to the top of the joint to prevent voids and air bubbles. Fill the joint with sealant, leaving it about 2mm higher. Smoothing the sealant is necessary. The product does not shrink. If the process is interrupted, resume carefully, ensuring there are no gaps between the sealant strips. Continue pushing fresh sealant over the previously applied sealant. Protect the sealed joints from rain and sunlight for at least 12 hours.

After 7 days, you can safely walk on the deck and proceed with sanding or grinding. Remove excess sealant with a dedicated scraper. Sand the deck along the grain direction of the planks, with a maximum angle of 45° along the length of the plank. Never sand perpendicular to the wood grain.

Finishing with paint or varnish is not recommended as it may reduce the adhesion and/or rheological properties of the sealant. We advise consulting our technical support team for guidance. To clean the deck, only fresh or saltwater should be used. If needed, only add neutral soap. To avoid damaging the deck, use a non-metallic brush. Do not use compressed air blowers or rotary brushes.

Cleaning Instructions

Clean tools with acetone or solvent. When the sealant is uncured, it can be wiped off with paper or cloth. Once cured, the product can only be removed mechanically. Avoid direct skin contact by wearing latex, rubber, or polyethylene gloves. If the sealant contacts skin, remove immediately and wash with soap and water.

Storage Instructions

SiMP-Seal Teak 680 can be stored for 12 months in its original (unopened) packaging at temperatures between 10°C and 25°C in a dry, cool place. The storage temperature should not exceed 25°C for extended periods. Keep away from damp areas, direct sunlight, and heat sources.