I have a 14x8 foot ( with thin metal ) shed with a pitch roof. There is no way I can put weight on this roof can this product be sprayed on?

This product would not be suitable to spray, I would try and use a soft broom and spread it with that if possible.

Can I use this item on a flat roof on my house?

Yes l did it on my flat roof over my bay window and it was really good the rain just rolls off it

can this be applied directly onto osb 3 board as a waterproof lean to roof or does felt need to go on top to be waterproof?

There needs to be felt to make it waterproof but the product is good

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Black Jack 905 All-Weather Roof Coating with Brush & Gloves - Fast Drying Weatherproof Solvent-Based Bitumen Compound - Water Proofing and Sealing Different Types of Roof Coverings (5L)

Black Jack 905 All-Weather Roof Coating with Brush & Gloves - Fast Drying Weatherproof Solvent-Based Bitumen Compound - Water Proofing and Sealing Different Types of Roof Coverings (5L)

Product ID: 229640181

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Details

Brand
Nassboards
Style
Compact
Water resistance level
Waterproof
Item form
Liquid
Unit count
1.0 Count

⏱️24-hour fast drying

🌧️All-weather waterproofing

🖌️Includes brush & gloves

Description

🛠️ Seal it fast, seal it right — your roof’s new best friend!

RAPID 24 HOUR DRYING - Get back to your day faster with a coating that cures in just one day.
COMPLETE DIY KIT INCLUDED - Brush and gloves included for a professional finish without the hassle.
TRUSTED NASSBOARDS QUALITY - Backed by a satisfaction guarantee and expert customer support.
VERSATILE MULTI SURFACE USE - Perfect for roofs, gutters, and structural steelwork—one product, endless protection.
ULTIMATE WEATHERPROOF SHIELD - Defend your roof against rain, snow, and harsh elements all year round.

Nassboards Black Jack 905 is a 5L solvent-based bitumen roof coating designed for fast drying (24 hours) and all-weather waterproof protection. It comes with a 3-inch brush and protective gloves, making it ideal for sealing roofs, gutters, and steelwork with professional results. Durable, versatile, and backed by Nassboards’ customer satisfaction promise.

Specifications

Manufacturer	Nassboards
Size	5L
Colour	Black
Style	Compact

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