Dougherty Stone Masonry team are restoration specialists with one their more common projects being chimney repair. Having a functional chimney is especial important here in the Ottawa Valley where we experience the full brunt of the Canadian winter and with that freeze thaw cycles. With the freeze thaw cycles any moisture that has gotten into the brick, stone and mortar joints will have a tendency to expand and crack the masonry material. These cracks will only worsen over time and structural and functional integrity of the chimney will deteriorate. The cap, otherwise known as the crown of the chimney plays a key role in water proofing. It seals and covers the top from the flue liners out to the drip edge on passed the outer edge of the chimney. There are pre-fabricated cap nowadays but on most old restorations building a cap was made out of stone or brick and simply mortared together. These exposed mortar joints can weak and crack over time and should be inspected regular as they can’t be seen from the ground. Proper chimney maintenance and repair are important for many reasons. Cracked and weakened chimneys can pose a dangerous falling hazard for people on the ground and potential roof damage as well as reducing the efficiency of your home’s heating system. Contact Dougherty Stone Masonry for all your chimney repair needs.