Description

Hempel Underwater Primer

Description

Hempel Underwater Primer is a fast-drying underwater primer containing aluminium flakes. For use as a sealer onto old antifouling or as a tiecoat over an epoxy primed surface before antifouling.

Recommended use

Suitable on glass fibre, wood and steel. For use on all areas below the waterline including keels.

Product data

Product code

26030

Standard shade / code

Aluminium 19000Aluminium grey 19000

Volume solids

39 ± 2%

Specific gravity

1.1 kg/L [10 lb/US gal]

Reference dry film thickness

50 micron [2.0 mils]

 

Product Data Sheet

Hempel’s Underwater Primer 26030

Surface preparation

Cleanliness

Remove oil, grease and other contaminants by suitable detergent cleaning.

Clean with Hempel’s Pre-Clean.

New build

Uncoated surface: Sand and remove all dust.

New wood: Saturate the dry, clean surface with a suitable wood treatment, allow to dry.

Steel: Remove salt and other contaminants by (high pressure) freshwater cleaning. Remove all rust and loose material by abrasive blasting or power tool cleaning. Dust off residues.

Prime with specified Hempel’s Primer.

Maintenance and Repair

Previously coated surface: Abrade, clean and dry the surface.

Spot repair and sand to obtain a uniform surface profile.

Application remarks

Stir well before use.

Prime porous surfaces with first coat of the product thinned with specified Hempel’s Thinner: max 20%.

Apply 2 full coats undiluted.

Previously epoxy primed surface: Apply 1 coat of the product as a tiecoat.

Overcoat two component products with a single component product whilst the surface is almost dry but has a slight tacky feel.

Previously coated surface: Apply 1 full coat undiluted.

Add thinner to assist application if necessary: max 5%.

Overcoat with chosen antifouling.

Product compatibility

Previous coat: Recommended products are: Hempel’s Sealer (for new wood), Hempel’s Light Primer

Subsequent coat: Recommended products are: Hempel’s Antifoulings

Drying conditions

To obtain the drying time stated, it is important to maintain sufficient ventilation during application, drying and curing.

Condensation on the freshly applied coating should be avoided.

Overcoating details

No maximum overcoating interval, but if the surface has been contaminated by oils and pollutants, thoroughly remove with suitable detergent, rinse with fresh water and allow to dry. Light abrade and remove all dust prior to repainting.

Other remarks

The surface must be clean before overcoating.