Dowsil 796 PVCu Aluminium and Wood Silicone Sealant - 310ml Cartridge

Dowsil 796 PVCu, Aluminium & Wood Silicone Sealant is a one-part, low modulus, neutral curing silicone sealant designed to seal PVC-U, glass, glazed surfaces and brickwork. Used by many to seal windows and doors it provides a highly flexible seal that resists extreme temperatures and ultra-violet radiation. Low odour thanks to the neutral cure formula, Dowsil 796 offers good unprimed adhesion to a variety of substrates and comes in many different colours, making it a great choice for your outdoor sealing tasks.

• Ideal for sealing PVC-U, glass, glazed surfaces and brickwork
• Low odour
• Resists extreme temperatures, ozone & UV radiation
• Available in multiple colours
• Good unprimed adhesion to a variety of substrates
• Conforms to ISO 11600-F&G-25LM

Ensure that surfaces to be sealed are clean, dry, sound and free from frost.

• Clean all joints of dust, dirt, old sealants and other contaminants which could impair adhesion.
• Non-porous surfaces should be cleaned and degreased by wiping with a suitable solvent such as DOWSIL™ R-40 Universal Cleaner on an oil and lint-free cloth before application of sealant.
• Porous substrates should be mechanically cleaned using a steel brush, sanding disk or any similar means.
• Areas adjacent to the joints should be masked with tape to prevent contamination of the substrates and to ensure a neat sealant line. Masking tape should be removed immediately after tooling.
• When back-up material is required, a closed cell polyethylene backer rod is recommended. Low tack polyethylene tape should be used in joints too shallow to allow the use of a backer rod. Back-up materials provide back pressure and prevent three sided adhesion that limits sealant movement capability.

If possible test on a small area before you start to ensure compatibility. Ensure that surfaces to be sealed are clean, dry, sound and free from frost, release agents, old sealants and other contaminants which could impair adhesion.

• 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.
• The joint should be tooled within 5 minutes of application to ensure good contact between the sealant and the substrate. Tooling of the sealant also gives a smooth, professional finish for best results use Bedec Silicone Profilers.
• The width of the sealant joint should be designed to accommodate the sealant’s movement capability. For joints using DOWSIL™ 796 Neutral Silicone, the minimum width should be 6 mm.
• For joints between 6 mm and 12 mm, a seal depth of 6 mm is recommended. For joints wider than 12 mm, a width-to-depth ratio of 2:1 should be applied. In cases where fillet joints are required, ensure a minimum of 6 mm sealant bite on each substrate.

Always follow manufacturer's instructions found on the packaging

Q. What is DOWSIL™ 796 PVCu, Aluminium & Wood Silicone Sealant used for?

A. DOWSIL™ 796 is a one-part, neutral cure silicone sealant specifically designed for sealing joints in PVC-U, aluminium, and wooden frames. It is commonly used for perimeter sealing around windows and doors in both residential and commercial applications.

Q. What types of substrates can DOWSIL™ 796 be used on?

A. DOWSIL™ 796 is designed for use on a wide range of substrates, including PVC-U, aluminium, and wood, making it ideal for sealing window and door frames in various applications.

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.