Silicone 825 is a superior low modulus silicone sealant designed for a wide range of construction applications. Its neutral curing properties and unique filled alkoxy curing system provide permanent flexibility, making it ideal for expansion joints among stone, brick, concrete, and composite panels.

Engineered to accommodate movement and expansion, this silicone sealant offers excellent adhesion, bonding securely to challenging substrates like glass, aluminium, and PVC without the need for a primer. Renowned for its versatility, Silicone 825 is perfect for perimeter pointing around all types of window and door frames, ensuring an airtight and weatherproof seal. Its durable performance is backed by compliance with ISO 11600 standards, Class F25LM and G25LM, guaranteeing long-lasting reliability. This sealant promises a professional finish on any project, offering both robust protection against the elements and a clean, professional look that enhances the longevity and appearance of your structures.

  • Contains 380ml of anthracite silicone sealant
  • Ideal for expansion joints in stone, brick, and concrete
  • Suitable for perimeter pointing around windows and doors
  • Primerless adhesion to glass, aluminium, and PVC
  • Low modulus for flexibility to accommodate movement
  • Alkoxy curing system for durable, long-lasting seals
  • Conforms to ISO 11600 Class F25LM and G25LM standards

£4.99 Standard Delivery, or FREE on most orders over £99* (some exclusions apply)

£9.99 Next day delivery is available for orders places before 12 noon. Any orders placed for next day delivery after this time, will take 2 working days to be delivered.

Working/delivery days are Monday to Friday, deliveries will not normally be made Saturday or Sunday.

We offer a 30-day returns policy on on the majority of our items*, as long as the item is unused, undamaged and unopened**. We only ask that the postage is covered by yourself. 


* Please see our delivery page for further details on specific exceptions.

** Some products that are made to order or personalised cannot be returned.

***Exclusions apply for items shipped directly from our suppliers, and some big & bulky items may incur an additional charge. Please see our delivery page for full details. 

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Sika 380ml Sikasil-825 Anthracite Silicone Sealant

  • 3,99 € ex. VAT
  • (Delivery from 4,65 € ex. VAT )
Item in Stock   |   Usually dispatched within 24 hours
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Free UK Delivery on most orders over £99
Delivery Rates & Information

Delivery Options

Standard Delivery: £4.99 - Free for all orders over £99.*
Next Day Delivery: £9.99 - Available for orders placed before 12:00 PM (Noon).

Important Delivery Notes

Next Day Delivery Cut-off: Orders placed after 12:00 PM (Noon) using Next Day Delivery will be delivered within two working days.
Working Days: Our standard delivery and shipping days are Monday through Friday. We do not normally deliver on Saturdays or Sundays.

Easy 30-Day Returns

We want you to be happy with your purchase! We offer a 30-day returns policy on all items, provided the following conditions are met:
  • The item is unused and undamaged.
  • The item is returned in its original packaging.
  • The customer is responsible for the return postage costs.

Combining Your Order

We always strive to combine your order into a single delivery. However, your order may arrive in multiple shipments if it contains:
  • Items from different warehouses (Standard items).
  • 'Direct' items (These are shipped separately and directly from the supplier) and will arrive separately from other items in your order.

*Exclusions & Additional Charges

The following items may be excluded from standard shipping rates or may incur extra delivery charges:
  • Items Shipped Directly from Suppliers ('Direct' items).
  • Certain Large or Bulky Items.
Want it by Tuesday 13th October? Order within 1 day, 11 hours, 22 minutes