Contact us Pop into our showroom in Dumbarton to see what's on offer! Office Opening Hours: Monday – Thursday: 9am – 4.30pm Friday: 9am – 3.30pm Tel: 01389 767102 Mobile: 07970 571211 (out of office & weekends) Email: info@johnduffjoiners.co.uk Where to find us: 25 Station Rd, Dumbarton G82 1NR News & Offers Home Improvements in time for Christmas Latest Offers on Hardwood Doors John’s Handy Tips