Free Delivery On Orders Over £50

KA Building Products KA Fillet Seal Grey 25kg

Code: BWAS653
  • £27.95
Item in Stock | Usually dispatched within 24 hours
Want it by Tuesday 22nd June? Order within 16 hours, 57 minutes and choose 2 to 5 Day Delivery at checkout.
  • Add 4ltrs of clean water to 25kg of Fillet Seal.
  • Avoid extremely hot and cold weather below 5 degrees C.
  • Sufficient surface penetration will provide full waterproofing properties after 5 – 7 days.

KA Fillet Seal Grey 25kg aids the strengthening of stress points in stonework waterproofing.

  • Strengthens weak points in waterproofing of block work and masonry.
  • Can be used where floor meets wall and in corners.
  • Expands when applied to create a watertight seal

Features -

Acts with water and free lime present in the substrate to react with the active chemicals in the product quickly forming and developing a continuous barrier of insoluble crystals which penetrate deep into the pores of concrete, blocking capillaries and leaks from the further passage of water, whilst permitting the transmission of air and water vapour, enabling the structure to breathe.

Once fillet has set, the active chemicals remain dormant until any subsequent contact with water reactivates the sealing process.

Rate and penetration of crystalline development varies with the density and surface absorption of the concrete. Sufficient surface penetration will provide full waterproofing properties after 5 – 7 days.


Active ingredients will not delaminate, peel off or wear away.

The permanent waterproofing properties become an integral part of the structure, protecting reinforced concrete from water borne corrosive elements.

Non-toxic or tainting blend of moisture activated chemicals, high grade silica aggregates and selected chemicals.

Deliveries - 

Our normal delivery days are Monday to Friday excluding Bank Holidays, in most cases your item(s) will be dispatched same day providing we receive your order by 2pm excluding products marked 'Local Delivery Only'. We use reliable carriers such as the Royal Mail and Parcelforce and typically you can expect your item to arrive within 3 working days. However on rare occasions your delivery may take longer due to factors beyond our control.

Return within 14 days.

Refunds –

If you cancel your contract between us within the seven-day cooling-off period we will process the refund due to you as soon as possible and, in any case, within 30 days of the day on which you gave us notice of cancellation. In this case, we will refund the price of the goods in full, (excluding delivery charges). However, you will be responsible for the cost of returning the item to us. Products can only be returned if packaging is not broken and is unworn/ not used.

Faulty or Damaged – 

If a product is suspected to be faulty or damaged, please contact us within 24 hours of receipt and a replacement or refund will be arranged. If a product has been fitted and/or used and is suspected to be faulty, please contact us immediately and we will resolve the issue according to the manufacturers terms and conditions.

Free Delivery on orders over £50 Ts & Cs - 

Large (ugly freight) items are currently excluded from this offer i.e. wheelbarrows, ladders and cement mixers. Deliveries to Ireland, Northern Ireland, and UK Non-Mainland are also excluded.