SKU:DERMED250SBO
Derivan Screen Block Out 250ml
Derivan Block-Out is a medium used to cover over areas of a screen you do not want to print. You should use medium after drawing your design with Derivan Drawing Fluid on the silk screen. The Block out should be left a minimum of 72 hours to dry. It is imperative that a test then be performed on an area of the block out, rubbing it with a damp cloth or finger, to make sure it has cured. If some colour comes up, leave it for another day before testing again. In some climates it can take many days before the block out is cured so that it will not move when washing out the drawing fluid.
*Note the longer you leave the block out on the screen (more than five days) the harder it becomes to remove
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Description
Derivan Block-Out is a medium used to cover over areas of a screen you do not want to print. You should use medium after drawing your design with Derivan Drawing Fluid on the silk screen. The Block out should be left a minimum of 72 hours to dry. It is imperative that a test then be performed on an area of the block out, rubbing it with a damp cloth or finger, to make sure it has cured. If some colour comes up, leave it for another day before testing again. In some climates it can take many days before the block out is cured so that it will not move when washing out the drawing fluid.
*Note the longer you leave the block out on the screen (more than five days) the harder it becomes to remove
Shipping & Delivery
Processing Time
We aim to process and ship all orders within 1–2 working days, subject to payment and stock availability.
Delivery Time
Estimated delivery time from dispatch:
- Auckland, Wellington, Christchurch (urban): 2–6 working days
- Other areas (including rural and remote): 3–8 working days
Shipping Fees
Standard courier rates apply to all orders. For oversized or heavy items (e.g. large drawing boards or easels), we will contact you before dispatch to confirm the shipping cost and provide a separate quote.
Dangerous Goods
Certain products (e.g. spray paints, alcohol inks) are classified as dangerous goods and require special handling, which may incur additional fees or restrictions. We will contact you before dispatch to confirm these charges and delivery options.
Free Shipping
Free shipping is available during promotional periods on orders meeting the minimum spend (excludes oversized items and some rural addresses). Please check our homepage or announcements for current offers.
Order Tracking
Once your order has shipped, we will email you a tracking number to monitor the delivery status.
Need Help?
If you have any questions or notice unexpected delays, please don’t hesitate to contact our customer service team — we’re here to help.
