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ONE Warranty Terms and Conditions



1.1 This Warranty is provided by SIG Roofing (“SIG” or “we”). SIG is a trading name of SIG Trading Limited, a company registered in England and Wales under company registration number 01451007. SIG’s registered address is at Hillsborough Works, Langsett Road, Sheffield, S6 2LW.
1.2 You can contact SIG by telephoning our customer service team on 01480 466 777, by emailing us at [email protected] or by writing to us at SIG Trading, Harding Way, St Ives, Cambridgeshire, PE27 3YJ. Our customer service team is available from Monday to Friday 9.00am to 5.00pm.
1.3 This Warranty is at all times subject to the terms, conditions and exclusions set out below. For further details, please see

2.1 In the event that Products used or installed at the address specified in the ONE Warranty Certificate (the “Property”) are proven to have deteriorated due to defects in their material, SIG will provide replacement Products at no charge to the owner of the Property (the “Warranty”).
2.2 SIG provides this Warranty for a period of fifteen (15) years from the date of purchase of the Products (the “Warranty Period”).
2.3 Certain paragraphs of this Warranty will only apply where the owner of the Property is acting either in the course of a business, trade or profession (“Business Customer”) or as an individual consumer (“Non-Business Customer”). This will be clearly signposted in the relevant paragraphs.
2.4 This Warranty does not cover installation of the Products. If there are any issues relating to the installation or use of the Products at the Property, please contact the contractor specified in the ONE Warranty Certificate (the “Contractor”) who is responsible for the selection and installation of the Products.
2.5 Please note that only “Participating Products” must be used throughout the whole roof at the Property (including, but not limited to, clay fittings, ridges and eaves). Failure to do so will invalidate this Warranty. SIG reserves the right to change or substitute Participating Products at any time without prior notice. For a full list of Participating Products please visit

3.1 SIG shall not be responsible for any failure of and/or leaks caused by anything other than defects in the manufacture of the Products themselves. Therefore this Warranty does not cover and SIG shall not be responsible for any defects, damage or liability which results from:-
3.2 failure of any component of the roof at the Property supplied by third parties;
3.3 normal wear and tear, misuse of the Products, the natural ageing of the Products, weather damage, defects caused or contributed to by improper fixing, movement in the construction of the roof at the Property, foot traffic or damage from foreign bodies;
3.4 physical damage however caused prior to, during, or after installation (including during regular maintenance) or defects that are caused as a result of modifications or repair attempts;
3.5 repair or alteration of the installed Products;
3.6 structural failures (including but not limited to, settling or shifting of the Property, movement, cracking or deflection of the deck or substrate, girders, beams, partitions or foundations);
3.7 water entry from adjacent structures or from any other part of the Property other than the roof;
3.8 hazards commonly treated as insurable risks (including but not limited to, acts of God, lightening, storms, fire, impact by/from aircraft or malicious damage) whether or not the owner of the Property is insured against the occurrence of such hazards;
3.9 the owner of the Property’s failure to comply with these terms and conditions, including, without limitation, neglect, abuse or misuse of the Products by the owner of the Property.
3.10 This Warranty shall only apply if:
3.11 the Products have been installed strictly in accordance with: (a) the British Standards codes of practice in force at the time of installation (including but not limited to BS 5534:2014+A1:2015 and BS8000); (b) any other recognised codes of practice in force at the time of installation; and (c) any manufacturer’s fitting instructions and technical recommendations;
3.12 the owner of the Property takes all normal and prudent steps to and has maintained the roof in a serviceable condition at all times during the Warranty Period in accordance with the relevant British Standards, including adequate maintenance of gutters, outlets and the membrane;
3.13 the owner of the Property has not misused the roof at the Property or otherwise dealt negligently with it(whether by itself, its agents, contractors, employees or invitees);
3.14 all Products provided have been invoiced by SIG and paid for in full;
3.15 the Property is located in England, Scotland, Wales or Northern Ireland;
3.16 where you are a Business Customer, there is no outstanding dispute between you and the Contractor.
3.17 This Warranty does not cover any colour shade, curvature, surface finish and dimensional variations of the Products, as well as lime spotting on up to 10% of the Product on Natural and Reclaimed Slate, Clay Tiles and Reproduction Stone.
3.18 Where the circumstances in paragraphs 2.5, 3.1.1, 3.1.3, 3.1.5, 3.2.1, 3.2.3, 3.2.5 or 3.3 apply, we would suggest that you contact the Contractor.

4.1 SIG does not exclude or limit its liability for death or personal injury caused by negligence, fraud or fraudulent misrepresentation, or any other losses which cannot be excluded or limited by applicable law.
4.2 Subject to paragraph 4.1, SIG shall not be liable for any economic, indirect or consequential losses. For the avoidance of doubt, this Warranty does not cover incidental or consequential damage to contents of the Property or any part of the Property on which the Products have been installed.
4.3 Subject to paragraphs 4.1 and 4.2, SIG’s total liability to you under this Warranty shall not exceed the cost of the repair or replacement of the defective Product(s).
4.4 This Warranty is in place of and, to the extent permitted by law, replaces and excludes all other warranties and conditions whether express or implied by common law, statute, trade practice or otherwise.

5.1 If we fail to comply with this Warranty, we are only responsible for loss or damage you suffer that is a foreseeable result of us breaching this Warranty or failing to use reasonable care and skill. We are not responsible for any loss or damage that is not foreseeable. Loss or damage is foreseeable if either it is obvious that it will happen or if, at the time this Warranty was issued by us, both we and you knew it might happen.
5.2 Please note that this Warranty is in addition to, and does not affect, your legal rights in relation to the Products in the event that they are faulty or not as described. Advice about your legal rights is available from your local Citizens’ Advice Bureau or Trading Standards office.

6.1 If you wish to make a claim under this Warranty then any defects in the Products must be notified in writing within 30 days of discovery (and in any event not later than the expiry of the Warranty Period) to SIG at the following address: ONE Warranty Claim, SIG Roofing, Harding Way, St Ives PE27 3YJ. Where applicable, a copy of the claim should also be sent to the Contractor within 48 hours of the claim being notified to SIG under this paragraph.
6.2 Notification of a claim to SIG shall be considered to be the owner of the Property’s authorisation for SIG or its agents to inspect the roof at the Property. If the fault is found to be outside the scope of this Warranty, SIG reserves the right to charge the owner of the Property for the reasonable costs of the inspection.
6.3 Any repairs deemed necessary by SIG during an inspection of the roof which are the fault of the owner of the Property (or its agents, contractors, employees or invitees) must be carried out at the owner of the Property’s expense in accordance with SIG’s recommendations for this Warranty to continue to be effective.

7.1 The owner of the Property may transfer the benefit of this Warranty to any subsequent owner of the Property, provided SIG provides its prior written consent to the transfer. The owner of the Property must provide SIG with prior written notice of the transfer in order to obtain SIG’s consent.
7.2 This Warranty is between you and SIG. No other person shall have any rights to enforce any of its terms.
7.3 Each of the paragraphs of this Warranty operate separately. If any court or relevant authority decides that any of them are unlawful, the remaining paragraphs will remain in full force and effect.
7.4 This Warranty is governed by English law. This means that this Warranty and any dispute or claim arising out of or in connection with it will be governed by English law.
7.5 If you are a Business Customer, we both irrevocably agree that the courts of England and Wales shall have exclusive jurisdiction to settle any dispute or claim arising out of or in connection with this Warranty.
7.6 If you are a Non-Business Customer, we both agree that the courts of England and Wales will have non-exclusive jurisdiction to settle any dispute or claim arising out of or in connection with this Warranty. However, if you are a resident of Northern Ireland you may also bring proceedings in Northern Ireland, and if you are a resident of Scotland, you may also bring proceedings in Scotland.

Registered Office: SIG Trading Limited, Adsetts House, 16 Europa View, Sheffield Business Park, Sheffield, S9 1XH. Registered in England No. 01451007 VAT No. GB 487 01733