Leonard Builders are a well respected West Dunbartonshire based builders established 1968. Specialising in new homes, private extensions, conversions, general building work, joinery, plumbing and special needs adaptations. Leonard Builders also manufacturer and installer Sheerframe PVCu windows, doors and conservatories. There is also a double glazing repairs and servicing division within the company. Leonard Builders have two retail showroooms one located at Dumbarton and the other in Alexandria. For more information visit their website at .