
Choosing a Bituminous Waterproofing Primer
Primers improve adhesion of membranes and coatings. Excellent wetting and fast drying. A primer penetrates the pores of…
Practical, expert articles on gilsonite in drilling fluids, asphalt, foundry, inks, paints, coatings and waterproofing.

Primers improve adhesion of membranes and coatings. Excellent wetting and fast drying. A primer penetrates the pores of…

Water-based bitumen emulsions are easy to apply and low in VOC. Gilsonite is first dissolved in hot bitumen,…

Damp-proof courses stop moisture rising through walls. Bitumen sheets or coatings placed in masonry joints. Adds hardness so…

Bituminous coatings are used under tiles and screeds in some regions. Gilsonite-modified coatings improve water resistance and hardness.

Underground structures face constant water pressure. Improves hardness and resistance to soil and water pressure. Underground structures may…

Water tanks, canals and reservoirs can be lined with bituminous materials. For potable water, use materials with appropriate…

Flat roofs collect water and experience high temperatures. Heat resistance, water resistance and durability. Gilsonite raises the heat…

Roll-roofing and waterproofing membranes consist of reinforcement coated with bituminous compound. Membranes need flexibility; gilsonite is used with…

Water and de-icing salts penetrating bridge decks corrode reinforcement. Waterproofing layers prevent this. Hardens mastic and membrane compounds,…

Basements and foundations need protection from groundwater and soil moisture. Solvent or emulsion coatings with gilsonite form a…

Water is the main enemy of buildings and infrastructure. Bituminous waterproofing materials are widely used, and gilsonite improves…

How long does gilsonite sealer last? Typically 2–4 years. Can I seal new asphalt? Wait until it has…
| Product | Particle size | Softening point (R&B) | Typical dosage | |
|---|---|---|---|---|
| Gilsonite Lump | 0 – 50 mm (custom) | 150 – 220 °C | Depends on application. | Spec · MSDS · COA |
| Gilsonite Granular | 1 – 5 mm | 150 – 200 °C | Asphalt: 4–12 % by weight of binder. | Spec · MSDS · COA |
| Gilsonite Powder | 100 – 200 mesh | 150 – 220 °C | Drilling 2–8 lb/bbl · asphalt 4–12 % of binder · foundry 0.3–1.0 % | Spec · MSDS · COA |
| Micronized Gilsonite | 300 – 600 mesh | 150 – 180 °C | Ink varnish: 20–40 % in oil. | Spec · MSDS · COA |
| Drilling Fluid Grade Gilsonite | 75 – 200 µm | 160 – 220 °C (grades) | 2 – 8 lb/bbl | Spec · MSDS · COA |
| Sulphonated Asphalt | — | — | 2 – 6 lb/bbl | Spec · MSDS · COA |
| Cementing Grade Gilsonite | 75 – 200 µm | 160 – 220 °C | 5 – 15 % BWOC | Spec · MSDS · COA |
| Asphalt Modifier Grade Gilsonite | Powder ≤ 200 mesh / granular 1–5 mm | 150 – 200 °C | 4 – 12 % by weight of binder | Spec · MSDS · COA |
| Foundry Grade Gilsonite | 100 – 300 mesh | 150 – 200 °C | 0.3 – 1.0 % (iron) | Spec · MSDS · COA |
| Ink & Paint Grade Gilsonite | 200 – 600 mesh | 150 – 180 °C | Ink varnish: 20–40 % in oil | Spec · MSDS · COA |
| Coating & Waterproofing Grade Gilsonite | ≤ 200 mesh | 150 – 200 °C | 5 – 25 % of compound | Spec · MSDS · COA |
| Sealer & Filler Grade Gilsonite | ≤ 200 mesh | 150 – 180 °C | Sealer: 15 – 35 % | Spec · MSDS · COA |
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