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Product Details

Ideal for use under vehicle chassis, wheel arches, door sills, fuel tanks and other high impact areas giving a tough, flexible, anti-chip, anti-corrosive coating. Provides a durable high impact protective coating against corrosion, water, stones and salt.



It also finds many uses in a wide range of building applications, where its waterproof properties are particularly important, e.g. repairs to felt roofs, guttering, and general damp proofing.

Technical Specification
Brand Silverhook
Unavailable offshore
Manufacture ID SGUS1
Safety Data Sheet click here
Volume (L) 0.5
Delivery details

Covid-19 Update

  • Free Next Business Day delivery for orders over £25 to home and site is available for orders placed before 5pm
  • Saturday and Sunday delivery is now available for orders placed before 4pm on Friday for Saturday delivery and 4pm Saturday for Sunday delivery, see here for details
  • We have temporarily suspended our Pre-12 delivery service
  • Once your order has been dispatched you will receive an invoice email with the courier details and your tracking number
  • Alternatively go to MyAccount, click on your Order History, click on the TRACK icon to link through to the carrier website and the tracking details for your delivery
  • If your order contains more than one item it may be split into two deliveries as we manage volume across our network
  • Due to carrier constraints it is not currently possible to deliver age restricted items. Please use our Click & Collect service for these products
  • Delivery direct from suppliers is now available and specific delivery times will be displayed on the product page
Order Value: Under £25 Over £25 but less than £75 £75 & Over
Next Business Day Delivery (Mon-Fri) usually before 6pm £5 Free Free
Pre-12 Delivery before 12 noon Next Business Day £10 £5 £5
Remote areas standard delivery (2-4 days) £5 Free Free
Saturday Delivery order by 4pm Friday £10 £5 Free
Sunday Delivery order by 4pm Saturday £10 £5 Free


Please note items delivered by our suppliers are not available for the options above. Delivery times may vary.

More about Delivery & Returns
Click & Collect details

Covid 19 Update

Click & Collect

  • Safe contactless collection is available 7 days a week at our branches
  • Our branches are open 7am-5pm Mon-Sat and 9am-4pm Sun
  • Keeping our colleagues and customers safe and well and respecting stringent social distancing requirements is our number one priority – 2 metre rule enforced
  • Our available product range will not require more than 1 person to lift
  • Please see our guide to click and collect below

  • Please ensure that your mobile number is added so that we can text you when your order is ready to collect

Call & Collect

Due to current trading conditions we have suspended our Call & Collect service until further notice.

If you are using our Click & Collect service please note the following:
  • Order online or over the phone and collect in branch from 5 minutes later.
  • Ensure you check stock is available for collection at your chosen branch.
  • Check branch opening hours to ensure you have sufficient time to collect.
  • For items not available for same day collection, place order before 7pm Mon-Fri (4pm Sun) and you can collect Next Business Day (Mon-Fri) after 3pm.
  • If we have your mobile number, we’ll send you a text when your order is ready to collect.
Reviews
Silverhook Bitumastic Underseal 500ml is rated 4.8 out of 5 by 17.
Rated 4 out of 5 by from UNDERSEAL Excellent. Thought I needed x2 cans but one can did the whole underneath of my 7 seater!!! Good quality product.
Date published: 2020-08-01
Rated 5 out of 5 by from Does what it says on the tin Just sealed one underside of my car, plenty to do the other when I finish replacing panels
Date published: 2020-07-23
Rated 5 out of 5 by from Good quality product Nice and easy to use, minimal prep required really, worth giving the areas a scrub with a wire brush first.
Date published: 2020-07-16
Rated 5 out of 5 by from Better than the other reviews. Bought 2 cans thinking that I would need more,but 1 can did the job with 1/2 can too spare, brilliant product and a great service,thank you Toolstation.
Date published: 2020-06-19
Rated 5 out of 5 by from Grand job made a grand job of my wheely bin
Date published: 2020-05-18
Rated 5 out of 5 by from Best aerosol underseal I’ve ever used At last, an underseal that works as it should. Sprays on brilliantly with good coverage and remains flexible when it dries.
Date published: 2020-05-16
Rated 5 out of 5 by from Excellent underseal. This is good quality easy to use under seal, it goes a long way, 1 can did 2 rear well arch inners and chassis area. The spray patern is perfect so there isn't much over spray, so very little masking is needed, it dries to a good textured finish and drives quite quickly, ideal to keep in the garage if you have a classic car and do your own welding repairs.
Date published: 2020-05-15
Rated 3 out of 5 by from Paint covers ok Bought 2weeks ago product is fine.
Date published: 2020-05-07
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