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Sealflex elastomeric Plastic Cement CR-31x

Colored plastic cement is used to effectively repair cracks in concrete, masonry, wood, gutters, asphalt shingles, metal roofs and roofs of recreational vehicles. Low VOC, it can also be used to stick asphalt shingles or caulk and seal chimney, vent and other flashings. It is ideal for making repairs before applying Sealflex Elastomeric Roof Coating. It is even possible to paint the product. This product is available in 8 colors: green, grey, brown, concrete grey, black, white, brick red and beige.

Would you buy this product?



  • 100% acrylic and odourless
  • High flexibility
  • Seals perfectly the cracks
  • Resists cracking and UV
  • Indoor and outdoor use
  • Several colors available


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Seal / Stick

Building components

Roofing / Foundation


Concrete / Masonry / Wood / Gutters / Asphalt shingles / Metal / RV roof membrane EDPM and TPO membrane

Covering rate

0,14 m2/kg applied 6 mm thick (0,68 ft2/lbs applied 1/4" thick)


Green / grey / brown / concrete grey / black / white / brick red and beige.

Preparation / Application

Application temperature

10°C and more

Service temperature

-40°C to 90°C

Application tools

Putty knife / Trowel / Caulking gun

Surface preparation

Surfaces must be clean and free of dust, dirt or other contaminants. Clean the surface with a universal degreaser except asphalt shingles. Brush and rinse thoroughly to remove all traces of soap. Sand smooth surfaces for better adhesion. Using a high pressure machine may be useful in some cases. Allow a drying time before applying the product.


Do not apply if rain is expected. Try the product on a small surface to validate if the product is suitable. At the time of application and during the complete drying, the temperature should be above 10°C. Avoid application in direct sunlight or on a very hot surface. Repair cracks with a maximum width of 0.5" by 0.5" deep. The surface must be repaired to allow the flow of water. Allow to dry and harden by protecting the surface against the elements. Close the container after each use.


Allow about 20 minutes for surface drying and 24-48h for complete drying. The drying time depends on the application method, the ambient temperature, the surface and the thickness applied

Caution / Cleaning / Storage

Restriction / Caution




Store this product away from frost. The product may be kept in its original sealed container up to 12 months after the date of purchase by the user.

Available format

300ml / 1kg


10 years limited warranty when installed and / or applied as recommended by the manufacturer. We will replace the product with a manufacturing defect. Under no circumstances will the manufacturer be liable for any amount exceeding the purchase price of the product used. The consumer must ensure that this product is suitable for the intended use. Because of atmospheric conditions, applicator competence and surface conditions being independent of the manufacturer’s control, we limit our liability for one year following the date of purchase, with proof of purchase, to replacement of defective material only in its original hermetic container. Port paid plant (FOB plant).