Roof Pointing Mortar

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Roof pointing mortar. Repointing is the process of renewing the pointing which is the external part of mortar joints in masonry construction. Metro dade project number 11 1222 07. The pointing is responsible for holding roof tiles in place. It is considered to be a general purpose mix useful for above grade exterior and interior load bearing installations.

Type n mortar mix has a medium compressive strength and it is composed of 1 part portland cement 1 part lime and 6 parts sand. The correct mix ratio is 3 parts sand to 1 part cement this is much stronger than bricklayers use 5 1 as the cement on the roof must withstand more driving rain than a typic. Over time weathering and decay cause voids in the joints between masonry units usually in bricks allowing the undesirable entrance of water. If the pointing is worn or damaged the roof tiles may loosen.

Flexipoint is a unique flexible pointing compound which is designed to flex with roof structures flexipoint is a premixed pre coloured in a range of colours is available to buy in 10 litre containers is trowel applied and is primarily used for pointing ridge tiles verge s and valleys on roofs. Meets astm c 270 specifications for type m mortar and meets south florida and metro dade building code requirements. Designed to set clay and cementitious roof tile. As the cement mortar or flexible compound breaks down or cracks water can reach the inside of the roof.

For normal masonry like walls a 4 to 1 is favoured because it matches the colour of the existing mortar better. It is also the preferred mortar mix for soft stone masonry. Roof leaks and excess moisture are two common signs that the pointing is failing. Covid 19 update to customers.

Oldcastle sakrete roof tile mortar mix is a mixture of high strength masonry cement and sand. Visit us today for the widest range of cement products products. Roof repointing cost roof repointing can range from replacing a few tiles repointing ridge edges and all the way up to replacing entire sections. Pointing brickwork i tend to use a 3 to 1 again here above the roof line to give strength weather resistance and ease of application often wetting the chase first with water and a hand held bottle sprayer to slow the drying.