Have you tried and failed to find an answer to a decorating query? Our expert Celia Rufey can help.

Simply write to Celia with your question. This service is free to Homes & Gardens subscribers. Please add your subscriber number to the top of your letter. For non-subscribers there is a research fee of £12 per query. Make cheques/postal orders payable to IPC Media Ltd. Send your question, plus payment with an sae, to Celia Rufey, Homes & Gardens, King's Reach Tower, Stamford Street, London SE1 9LS. This is a subsidised service and we are unable to answer multiple queries from individual readers.