Mortar Mix For Roof Valleys

Designed to set clay and cementitious roof tile.

Mortar mix for roof valleys.

It was also highly recommended for its workability slump adhesion and strength. Metro dade project number 11 1222 07. It is also the preferred mortar mix for soft stone masonry. It appears that this aspect and the mortar around the verges are not covered in any guarantee.

If an incorrect ratio is used this is the outcome click to enlarge. It s specifically designed for bedding clay and concrete roof tiles. Loose flaky cement under ridge tiles. Developed specifically for roofers remix roof tile bedding mortar solves the problem of using the wrong mortar mixes for bedding ridges hips and valleys.

I am going to repair the work myself and have been told that a 4 1 mix using sharp sand and a small amount of pva added to the water is the way to go. 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 typical brick wall. Tested extensively by the nhbc it performs as well as the best custom mix mortars. 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. Meets astm c 270 specifications for type m mortar and meets south florida and metro dade building code requirements.