We absolutely do! Our standard guarantee is 1 years labour and materials (sometimes longer for materials, if manufacturers stipulate so!), and 6 years labour for compliance issues related to our work, which is backed by an insurance policy provided by the NICEIC, our professional registration body. For a select few cherry-picked materials, we can sometimes offer longer parts AND LABOUR guarantee, too! If we're offering better guarantees beyond our standard guarantees, we put these details in your written quotes.