Sherwin Williams Kem-Kromik 671 - Formerly Leighs M671

UN1263 (Class: 3, Pk Grp: III)
A conventional quick drying undercoat / tiecoat developed for marine use on above waterline areas.
Available in 5 Litres
From £72.50 £60.42
In stock
Only %1 left
Product Description

Sherwin Williams Kem-Kromik 671 is a conventional quick drying undercoat / tiecoat developed for marine use on above waterline areas.

Best Uses

A high quality undercoat/tiecoat developed for marine use on above waterline areas but also suitable for normal interior and exterior use. M671 may also be used as a wood primer for interior or exterior use.


Recommended application via airless spray, conventional spray, brush or roller. Use Sherwin Williams Thinner No 1. Recommended primer Sherwin M155 Alkyd Primer. Ensure surfaces to be coated are clean, dry and free from all surface contamination.

Sherwin M671 Undercoat can be overcoated with a wide range of white spirit based finishes.

Technical Details


  • BS476 Part 7 - Surface Spread of Flame

Technical Info

Components: Single Pack
Type: Alkyd
Finish: -
Stock Colours: White, Grey
Tintable: No
VOC Content: 380 gms/litre
Volume Solids: 52 ± 3%
Suitable Substrates: For marine use on above waterline areas, also as an interior or exterior wood primer
Application Method: Brush, Roller, Airless Spray, Conventional Spray
Theoretical Coverage: 14.9 m2/lt
Wet Film Thickness (WFT): 67 microns
Dry Film Thickness (DFT): 35 microns
Induction Time: -
Pot Life: -
Touch Dry: 2½ hours at 15°C
Overcoatable: 7 hours at 15°C
To Handle: 24 hours at 15°C
Cleaner / Thinner: Thinner No.1
Shelf Life: 2 years from date of production unopened or 'use by' date where specified
Packaging: Available in 5 Litres

The manufacturers data sheets are available for download from this website. It is your responsibility to read and understand all aspects of the data sheets before you place an order and prior to application. Please pay special attention to the preparation, mixing and application temperatures of the product, cleaning of substrate and environmental factors such as temperature, rain etc. Quoted coverage rates are based on the manufacturers theoretical rates and may vary depending upon substrates absorption, texture and application. We always recommend a test is carried out to ensure suitability.

Customer further agrees that Promain have no liability for any errors or omissions contained within the Product Data Sheets and are not liable for failure due to misapplication or inadequate substrate cleaning and preparation. For more information please refer to our Terms & Conditions.

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