Zinsser Grade 1

Non Hazardous
A white, non-yellowing, paint that offers a dead matt finish over water-stained ceilings / walls.
Available in 2.5, 5 and 10 Litres. Tintable to over 5000 Colours
From £53.81 £44.84
In stock
Only %1 left
Product Description

Zinsser Grade 1 is a self-priming finish for interior walls and ceilings of traditional and historic buildings; effectively covering unsightly stains.

Zinsser Grade 1 is a high performance, self-priming finish for the interior decoration of walls and ceilings in traditional and historic buildings, including churches, castles and period properties, developed with a high solids formula that works to effectively block unsightly stains caused by nicotine, graffiti, water, fire and smoke.

Best Uses

Zinsser Grade 1 is formulated for interior applications where the performance of a solvent-base paint is desired, but high odour levels are objectionable or not permitted. Any slight odour that is detected during application is milder than ordinary emulsion paint and will diminish quickly after application. Zinsser Grade 1 is water permeable and allows the substrate to breathe, so moisture can evaporate.

Suitable for application to new or previously painted interior walls, ceilings, panelling and other related paintable surfaces. Resistant to high pH surfaces (up to 12.5) including plaster, poured concrete, concrete block, stucco and ‘hot’ joints / texture compounds. Seals porous surfaces. Blocks difficult stains from fire and smoke damage and nicotine.


Surfaces should be clean, dry, sounds and free of dust, dirt, grime, grease, oil, wax, mildew, wallpaper, adhesive or any contamination that may interfere with adhesion. If unsure, always wash the surface with an appropriate cleaning solution, or solvent and allow to dry out thoroughly before painting. Remove excessive chalky material and any unsoundly adhered coatings. Remove mould with an appropriate cleaner, such as Zinsser Mould Killer & Remover. Special precautions should be taken during the surface preparation of pre-1960’s paint surfaces over wood and metal as they may contain harmful lead. When dry-sanding avoid dust inhalation by wearing a suitable protective face mask. Seal knots and sap streaks with Zinsser B-I-N primer-sealer.

Shake or stir well before using. Apply with a quality brush and / or roller or airless sprayer. Keep container closed when not in use. Do not thin.

Surface and Environment

Zinsser Grade 1 is a high performance, stain blocking, self-priming product that is designed primarily for interior application in historic building. This product can be applied to a number of different substrates including, concrete, lime based plaster, plaster, stucco and previously glossed surfaces, offering excellent adhesion and covering power.

Technical Details


  • Solvent based stain blocking performance without odour
  • Offers up to 8 years performance
  • Seals difficult stains from water, fire, smoke & nicotine
  • Adheres to glossy surfaces without pre-sanding or de-glossing
  • Bright white, non-yellowing, dead-flat finish looks great over dingy, water-stained ceilings / walls
  • High pH resistance (up to 12.5) for concrete, lime based plaster, plaster, stucco and fast set joint/texture compounds
  • Contains a biocide to protect the dried coating against fungal degradation
  • Vapour Permeable - allows substrate to breathe
  • Apply to new or previously painted interior walls, ceilings, panelling and other related paintable surfaces
  • Resistant to high pH surfaces (up to 12.5) including plaster, poured concrete, concrete block, stucco and 'hot' joints / texture compounds
  • Seals porous surfaces and blocks difficult stains from fire and smoke damage and nicotine

Technical Info

Components: Single Pack
Type: Solvent Based
Finish: Flat Matt
Stock Colours: White
Tintable: Yes, to most RAL or British Standard codes. Please note, bespoke tints are non refundable / exchangeable
VOC Content: 350 g/L
Volume Solids: 55%
Suitable Substrates: Can be used on new or previously painted interior drywall, cured plaster, cement, poured concrete, stucco, concrete block, limewash, distemper, metal, most rigid plastics, glossy laminates and other paintable interior surfaces. Ideal for application to walls previously painted with builder’s grade paint.
Application Method: Brush, Roller or Pad
Theoretical Coverage: 10 m2 per litre at 40 microns DFT
Wet Film Thickness (WFT):
Dry Film Thickness (DFT): 40 microns
Induction Time: -
Pot Life: -
Touch Dry: 30 minutes at 24°C
Overcoatable: After 2 hours at 24°C
Fully Cured: 7 days at 24°C
Cleaner / Thinner: Clean up spills and drips immediately with white spirits. Rinse application tools in white spirits immediately after use. Follow manufacturer’s instructions to clean spray equipment. Use Zinsser BIN Brush Cleaner to remove dried paint from brushes.
Shelf Life: 2 years in unopened containers
Packaging: Available in 2.5, 5 and 10 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.

Related Products