Sovereign Chemicals is the market leader in the field of chemical damp proof coursing, façade treatment and remedial timber treatment.

This reputation has been gained for the quality of its products and also for the support and care offered under the Sovereign Protection Scheme Guarantee. Since 1976 over half a million satisfied property owners are testimony to the effectiveness of the Scheme.

Flexibility is available with the choice of 10, 20 or 30 year Protection Scheme Guarantees for timber and damp proof courses and the introduction of a 10 year Guarantee for façade treatment.

Sovereign Protection Scheme Guarantees are offered by remedial contractors who have been vetted by Sovereign. Only when we are satisfied that they are capable of carrying out work to a consistently high standard do we allow contractors to apply to become Sovereign Approved Contractors. Regular site visits ensure that standards of workmanship and customer care are maintained.

Sovereign believe that it is essential that specifiers and the public at large are protected. Even the most conscientious and meticulous contractor may not be available to service his guarantee due to circumstances beyond his control. In this event Sovereign intervene.

Once the Sovereign Protection Scheme Guarantee has been issued the property is covered against recurrence of the original problem for the full term of the Guarantee. This cover is initially supplied by the contractor, however, if he is no longer in business, Sovereign will arrange for the necessary retreatment to be carried out by another Sovereign Approved Contractor. All work will be completed to Sovereign Specifications at all times. This protection is provided for a one off payment based upon the original contract value, including, where applicable, the re-rendering, subject to a minimum charge.

For more details on the Sovereign Protection Scheme please click here.


Q: Where can I find a list of Approved Contractors in my area? 

You can search for Approved Contractors in your area by entering your Town/City or Postcode on our Contractors page.

Q: Can I get a duplicate/copy Guarantee?

Duplicate/Copy Guarantees must be obtained via the Sovereign Contractor. There is also a fee of £50.00+VAT. If the contractor has ceased to trade unfortunately we are unable to provide a duplicate/copy as a Sovereign Contractor Signature is required to validate it.

Q: Where is my Guarantee?

If you have not received your guarantee within 14 days, contact your Sovereign Contractor or our Guarantees Department to help chase the document.

Q: How do I change my Sovereign Approved trading title?

If you require your trading title changed please write to us stating your new company title and that you will honour any previous Guarantees issued under your old company title. We also require new completed contracts in your new trading title, these will be forwarded once we have received your letter.

Q: How do I apply to become a Sovereign Approved Contractor?

First four jobs are to be completed, our representative surveys each property to make sure these are carried out to our specification (one of which must be inspected while in progress).

Equipment and remedial products used, must be purchased from ourselves (any equipment already in use, must be checked by your local representative)

Your account must be kept within our trading terms, which are, payment to be received within 30 days of invoice.

After full Sovereign Approval for Damp Proofing and Timber Treatment you may apply for Sovereign Approval Contractor Scheme Working to BS6576, further details are available on request.

On receipt of an application letter, stating your wish to become an Approved Contractor for Damp Proofing and Timber Treatment, an Introductory Package will be sent to yourself.

Q: Does a Guarantee remain valid when there is a change of ownership?

The Guarantee remains valid subject to terms and conditions; regardless of ownership of the property. However, if you require this Guarantee to be changed we will require the original Guarantee document and an Assignment Fee of £50+VAT.

Q: How long will it take to process my guarantee?

Once our Guarantee Department have received the documentation, providing we have the Guarantee Application Form completed fully and that your account is up to date. The Guarantee will be processed within 2 working days.

Q: How long will it take till I am approved?

Once four jobs for each field have been completed and checked by your local representative, providing your account is up to date and contracts are on file, then the approval will be processed.

If you have any further questions about Sovereign Guarantees, you can e-mail our Guarantees Department or call us on 01229 870800. Our normal opening hours are 9-5pm Monday to Friday.