Keeping your chimney clean or repairing it is no way an easy task. It requires adequate time and knowledge. A chimney is a narrow device and to fix it well you have to reach to the roof top and adopt apposite safety measures to fix it. To fix a chimney you need a chimney mortar which does not allow water to settle down within the chimney. However, at the time when you are making provisions for the mortar you should look for a proper base to stand on and you should also have something to cling on properly.
Be careful not to grip depleted areas or else the chimney might break off causing fatal accidents. It is better that you choose a sunny day for repairing or cleaning a chimney. Particularly at the time of mortar application the weather should be dry giving the bricks the opportunity to settle down fast so that you can start using the appliance quickly and without any hassle. However, when required you should also look for ways in repairing a chimney crown to make the device last and work with efficiency for several years to come.