Dowsil 785N Neutral Sanitary Silicone - 310ml Cartridge

Dowsil 785N Neutral Sanitary Silicone Sealant is a high-performance, one-part sealant designed specifically for sanitary applications. Ideal for sealing around baths, showers, sinks, urinals, and ceramic tile joints, it is perfect for both domestic and commercial projects requiring a quick turnaround. With neutral cure, this sealant cures quickly without releasing strong odours, making it a great option for indoor use. It also provides a durable seal that resists mould and mildew growth, ensuring long-lasting cleanliness for areas exposed to high moisture. Versatile, Dowsil 785N offers good unprimed adhesion to a wide range of porous and non-porous substrates, including stone, marble, and granite.

• Low odour - ideal for indoor use
• Mould & mildew resistant
• Fast cure & early water resistance after 2 hours
• Versatile use on porous and non-porous substrates
• Non-corrosive to metal
• Low shrinkage - Flexible finish - High elasticity

  Area	Interior
  Recommended Use	Sealing of sanitary fittings including baths, showers, sinks, urinals and ceramic tile joints. Can be used on a variety of non-porous and porous substrates including aluminium, copper, brass, stainless steel, ceramic, tile, porcelain, plastic, glass, brass, stone, marble and granite (stain testing should be undertaken prior to application)
  Drying Time	Skin overtime: 12 minutes
  Application Method	Skeleton Gun
  Clean Up	Remove as much product as possible from the equipment before cleaning following manufacturer's recommendations

Ensure that all surfaces to be sealed are clean, dry, sound, and free from frost, grease, dust, old sealants, and other contaminants that could affect adhesion.

• For non-porous surfaces, clean and degrease by wiping with a suitable solvent, such as DOWSIL™ R-40 Universal Cleaner, on a clean, oil- and lint-free cloth. Ensure the surface is thoroughly dry before proceeding with sealant application.
• For porous substrates (such as concrete, brick, or mortar), clean the surfaces by using a steel brush, sanding disc, or other mechanical means to remove any loose particles and debris.
• Ensure the substrate is suitable for bonding with the silicone sealant. It is recommended to test adhesion on a small area, especially when working with various coatings or finishes.
• Priming may be required for certain surfaces, particularly porous ones, to ensure optimal adhesion of the sealant.
• Mask areas adjacent to the joint with tape to prevent contamination of the substrates and to ensure a clean, precise sealant line.
• When using solvent-based cleaning products or working in confined spaces, always ensure proper ventilation to maintain safety.

By following these preparation steps, you will ensure that the surface is clean and ready for the application of DOWSIL™ 785 N Neutral Sanitary Silicone Sealant, promoting optimal adhesion and long-lasting performance.

The silicone sealant is ready for immediate use. Cut the tip off the cartridge and screw on the nozzle and cut the nozzle to the desired bead size. We recommend using the Geocel Cox Skeleton Gun for application. If back-up material is needed, it is recommended to use closed cell polyethylene backer rod. This will help provide back pressure and ensure proper sealant movement.

• Load the cartridge into a sealant gun. Apply DOWSIL™ 785 N Silicone Sealant into the joint in a continuous, uniform bead. Ensure the sealant completely fills the joint without leaving air pockets or gaps.
• Tool the sealant within 5 minutes of application to ensure good contact between the sealant and the substrate. Light pressure should be applied during tooling to smooth the sealant and ensure a clean, professional finish.
• If masking tape was used to protect adjacent surfaces, remove the tape immediately after tooling the sealant to ensure a crisp, neat line for best results we recommend using Bedec Silicone Profilers.
• Allow the sealant to cure for at least 24 hours in normal conditions. Full cure may take up to 7 days, depending on humidity and temperature. Ensure the area remains dry and undisturbed during curing.
• Excess uncured sealant can be cleaned off tools and non-porous surfaces using a suitable solvent like DOWSIL™ R-40 Universal Cleaner. Once cured, the sealant must be mechanically removed.

Always follow manufacturers instructions found on the packaging.

Q. Is DOWSIL™ 785 N Silicone Sealant resistant to mildew and fungus?

A. Yes! DOWSIL™ 785 N Silicone Sealant is specifically formulated to be mildew and fungus-resistant, making it ideal for use in high-moisture environments like bathrooms and kitchens.

Q. What surfaces can DOWSIL™ 785 N Silicone Sealant be applied to?

A. DOWSIL™ 785 N Silicone Sealant offers excellent adhesion to a wide variety of substrates, including both porous and non-porous materials. It works well on ceramic, tile, porcelain, plastic, glass, as well as various metals such as aluminum, copper, brass, and stainless steel.

Delivery - All orders placed on a working day before 3pm will be dispatched on the same day for next working day delivery. Orders placed before 3pm on Friday will be delivered on Monday (excluding bank holidays). Orders placed on weekends and Bank Holidays will be dispatched on the next working day. 

Delivery of Tinted Products - Tinted paints are dispatched in line with our express order process, shown below. However, due to their bespoke nature, please allow up to an additional 5 working days to accommodate any potential courier delays or delivery issues before receiving a refund or replacement.

We strongly suggest customers avoid booking tradespeople until they receive their order. Next Day Paint will not be held liable for any costs incurred due to order processing errors, delivery delays, or other issues that may result in financial loss.

Delivery Options

Express Shipping - £3.99

Order by: 3pm, Monday - Sunday

Expected delivery: Next working day, 8am - 9pm

Orders placed on weekends or bank holidays will be dispatched on the next working day for delivery on the following day

AM Delivery - £12.99

Order by: 2pm, Monday - Sunday

Expected delivery: Next working day by 2pm

Orders placed on weekends or bank holidays will be dispatched on the next working day for delivery on the following AM

Late Cut-Off - £5.99

Order by: 4pm, Monday - Friday 

Expected delivery: Next working day, 8am - 9pm

Orders placed on weekends or bank holidays will be dispatched on the next working day for delivery on the following day

Saturday Delivery - £9.95

Order by: 2pm, Friday 

Expected delivery: Saturday, 8am - 9pm

Standard Delivery (Out of Zone Postcodes Only) - £6.99

Order by: 3pm, Monday - Sunday 

Expected delivery:  3-5  working days, 8am - 9pm

Orders placed on weekends or bank holidays will be dispatched on the next working day for delivery on the following day

We do not deliver to the Channel Islands or the Republic of Ireland

Certain postcodes delivery times and charges may vary please head to the cart to see your available delivery options.

Returns

We offer a 14 day money back guarantee for all goods shipped correctly that are not required. If the item is not required, please send the item back for a full refund in its original condition, unused with its original packaging. Please note return for unwanted item is at your own expense.

Contact us as soon as possible to inform us you will be returning the product either by a contact form or by calling our team on 0161 960 0217.

All tinted paint purchases are final and non-refundable. If you're unsure about your selection, please refer to the product listing or contact us for guidance before ordering. Once mixed, tinted paints cannot be returned or refunded, regardless of delivery delays or changes in circumstances.

While we aim to meet delivery timelines, we are not responsible for delays caused by couriers, weather, or other external factors.

We recommend ordering samples or colour charts before purchasing. While we strive to represent colours accurately, screen settings and surface types can affect appearance. Opened tins cannot be returned due to dissatisfaction with colour.

For non-tinted products, we offer a 14-day money-back guarantee. Items must be returned unused, in original condition and packaging, at your own expense.

Damaged Paint

Please visit our damages page, where we can help resolve the issue for you. 

Incorrect Item

If we have sent you a different item from what you ordered, we will be happy to organise an exchange for the correct goods at no extra charge to yourself, please get in touch to organise this.

Faulty Items

Faulty items can be refunded or exchanged within 30 days. All returns are tested, and if no fault is found, no refund will be issued you'll have the option to have the item returned. For faults discovered after 30 days, please contact the manufacturer for further support.